From 952c63e9512b63220886105cfc791507046fa39a Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Sat, 29 Jun 2013 00:24:38 +0800 Subject: ACPI: introduce helper function acpi_has_method() Introduce helper function acpi_has_method() and use it in a number of places to simplify code. [rjw: Changelog] Signed-off-by: Jiang Liu Signed-off-by: Rafael J. Wysocki --- include/acpi/acpi_bus.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include') diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index 56e6b68c8d2..62b2811bade 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -56,6 +56,9 @@ acpi_evaluate_hotplug_ost(acpi_handle handle, u32 source_event, acpi_status acpi_get_physical_device_location(acpi_handle handle, struct acpi_pld_info **pld); + +bool acpi_has_method(acpi_handle handle, char *name); + #ifdef CONFIG_ACPI #include -- cgit v1.2.3-70-g09d2 From 0db98202605c3d32e023d43c30b5bd878f520976 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Sat, 29 Jun 2013 00:24:39 +0800 Subject: ACPI: introduce helper function acpi_execute_simple_method() Introduce helper function acpi_execute_simple_method() and use it in a number of places to simplify code. [rjw: Changelog] Signed-off-by: Jiang Liu Signed-off-by: Rafael J. Wysocki --- drivers/acpi/battery.c | 8 ++------ drivers/acpi/bus.c | 6 +----- drivers/acpi/power.c | 4 +--- drivers/acpi/sleep.c | 7 ++----- drivers/acpi/thermal.c | 18 ++++-------------- drivers/acpi/utils.c | 12 ++++++++++++ drivers/acpi/video.c | 17 +++++------------ include/acpi/acpi_bus.h | 2 ++ 8 files changed, 29 insertions(+), 45 deletions(-) (limited to 'include') diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c index a7627166e18..74669ac4c61 100644 --- a/drivers/acpi/battery.c +++ b/drivers/acpi/battery.c @@ -525,18 +525,14 @@ static int acpi_battery_get_state(struct acpi_battery *battery) static int acpi_battery_set_alarm(struct acpi_battery *battery) { acpi_status status = 0; - union acpi_object arg0 = { .type = ACPI_TYPE_INTEGER }; - struct acpi_object_list arg_list = { 1, &arg0 }; if (!acpi_battery_present(battery) || !test_bit(ACPI_BATTERY_ALARM_PRESENT, &battery->flags)) return -ENODEV; - arg0.integer.value = battery->alarm; - mutex_lock(&battery->lock); - status = acpi_evaluate_object(battery->device->handle, "_BTP", - &arg_list, NULL); + status = acpi_execute_simple_method(battery->device->handle, "_BTP", + battery->alarm); mutex_unlock(&battery->lock); if (ACPI_FAILURE(status)) diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index a5bb33bab44..a5a032e2344 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -593,8 +593,6 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data) static int __init acpi_bus_init_irq(void) { acpi_status status; - union acpi_object arg = { ACPI_TYPE_INTEGER }; - struct acpi_object_list arg_list = { 1, &arg }; char *message = NULL; @@ -623,9 +621,7 @@ static int __init acpi_bus_init_irq(void) printk(KERN_INFO PREFIX "Using %s for interrupt routing\n", message); - arg.integer.value = acpi_irq_model; - - status = acpi_evaluate_object(NULL, "\\_PIC", &arg_list, NULL); + status = acpi_execute_simple_method(NULL, "\\_PIC", acpi_irq_model); if (ACPI_FAILURE(status) && (status != AE_NOT_FOUND)) { ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PIC")); return -ENODEV; diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c index 5c28c894c0f..1460c88a7c0 100644 --- a/drivers/acpi/power.c +++ b/drivers/acpi/power.c @@ -637,9 +637,7 @@ int acpi_device_sleep_wake(struct acpi_device *dev, } /* Execute _PSW */ - arg_list.count = 1; - in_arg[0].integer.value = enable; - status = acpi_evaluate_object(dev->handle, "_PSW", &arg_list, NULL); + status = acpi_execute_simple_method(dev->handle, "_PSW", enable); if (ACPI_FAILURE(status) && (status != AE_NOT_FOUND)) { printk(KERN_ERR PREFIX "_PSW execution failed\n"); dev->wakeup.flags.valid = 0; diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c index 187ab61889e..81b0f03d97d 100644 --- a/drivers/acpi/sleep.c +++ b/drivers/acpi/sleep.c @@ -31,12 +31,9 @@ static u8 sleep_states[ACPI_S_STATE_COUNT]; static void acpi_sleep_tts_switch(u32 acpi_state) { - union acpi_object in_arg = { ACPI_TYPE_INTEGER }; - struct acpi_object_list arg_list = { 1, &in_arg }; - acpi_status status = AE_OK; + acpi_status status; - in_arg.integer.value = acpi_state; - status = acpi_evaluate_object(NULL, "\\_TTS", &arg_list, NULL); + status = acpi_execute_simple_method(NULL, "\\_TTS", acpi_state); if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { /* * OS can't evaluate the _TTS object correctly. Some warning diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c index a33821ca389..94523c79dc5 100644 --- a/drivers/acpi/thermal.c +++ b/drivers/acpi/thermal.c @@ -239,26 +239,16 @@ static int acpi_thermal_get_polling_frequency(struct acpi_thermal *tz) static int acpi_thermal_set_cooling_mode(struct acpi_thermal *tz, int mode) { - acpi_status status = AE_OK; - union acpi_object arg0 = { ACPI_TYPE_INTEGER }; - struct acpi_object_list arg_list = { 1, &arg0 }; - acpi_handle handle = NULL; - - if (!tz) return -EINVAL; - status = acpi_get_handle(tz->device->handle, "_SCP", &handle); - if (ACPI_FAILURE(status)) { + if (!acpi_has_method(tz->device->handle, "_SCP")) { ACPI_DEBUG_PRINT((ACPI_DB_INFO, "_SCP not present\n")); return -ENODEV; - } - - arg0.integer.value = mode; - - status = acpi_evaluate_object(handle, NULL, &arg_list, NULL); - if (ACPI_FAILURE(status)) + } else if (ACPI_FAILURE(acpi_execute_simple_method(tz->device->handle, + "_SCP", mode))) { return -ENODEV; + } return 0; } diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c index b08d97376f8..87b85882b5d 100644 --- a/drivers/acpi/utils.c +++ b/drivers/acpi/utils.c @@ -510,3 +510,15 @@ bool acpi_has_method(acpi_handle handle, char *name) return ACPI_SUCCESS(acpi_get_handle(handle, name, &tmp)); } EXPORT_SYMBOL(acpi_has_method); + +acpi_status acpi_execute_simple_method(acpi_handle handle, char *method, + u64 arg) +{ + union acpi_object obj = { .type = ACPI_TYPE_INTEGER }; + struct acpi_object_list arg_list = { .count = 1, .pointer = &obj, }; + + obj.integer.value = arg; + + return acpi_evaluate_object(handle, method, &arg_list, NULL); +} +EXPORT_SYMBOL(acpi_execute_simple_method); diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index a84533e67b9..b862c7f7494 100644 --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -353,14 +353,10 @@ static int acpi_video_device_lcd_set_level(struct acpi_video_device *device, int level) { int status; - union acpi_object arg0 = { ACPI_TYPE_INTEGER }; - struct acpi_object_list args = { 1, &arg0 }; int state; - arg0.integer.value = level; - - status = acpi_evaluate_object(device->dev->handle, "_BCM", - &args, NULL); + status = acpi_execute_simple_method(device->dev->handle, + "_BCM", level); if (ACPI_FAILURE(status)) { ACPI_ERROR((AE_INFO, "Evaluating _BCM failed")); return -EIO; @@ -628,18 +624,15 @@ static int acpi_video_bus_DOS(struct acpi_video_bus *video, int bios_flag, int lcd_flag) { acpi_status status; - union acpi_object arg0 = { ACPI_TYPE_INTEGER }; - struct acpi_object_list args = { 1, &arg0 }; if (!video->cap._DOS) return 0; if (bios_flag < 0 || bios_flag > 3 || lcd_flag < 0 || lcd_flag > 1) return -EINVAL; - arg0.integer.value = (lcd_flag << 2) | bios_flag; - video->dos_setting = arg0.integer.value; - status = acpi_evaluate_object(video->device->handle, "_DOS", - &args, NULL); + video->dos_setting = (lcd_flag << 2) | bios_flag; + status = acpi_execute_simple_method(video->device->handle, "_DOS", + (lcd_flag << 2) | bios_flag); if (ACPI_FAILURE(status)) return -EIO; diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index 62b2811bade..e3862587b9d 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -58,6 +58,8 @@ acpi_status acpi_get_physical_device_location(acpi_handle handle, struct acpi_pld_info **pld); bool acpi_has_method(acpi_handle handle, char *name); +acpi_status acpi_execute_simple_method(acpi_handle handle, char *method, + u64 arg); #ifdef CONFIG_ACPI -- cgit v1.2.3-70-g09d2 From 7d2421f84b445dc48c68d33911f1fd6ce6853ee3 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Sat, 29 Jun 2013 00:24:40 +0800 Subject: ACPI: introduce two helper functions for _EJ0 and _LCK Introduce two helper functions, acpi_evaluate_ej0() and acpi_evaluate_lck(), that will execute the _EJ0 and _LCK ACPI control methods, respectively, and use them to simplify the ACPI scan code. [rjw: Changelog] Signed-off-by: Jiang Liu Signed-off-by: Rafael J. Wysocki --- drivers/acpi/scan.c | 31 ++++++------------------------- drivers/acpi/utils.c | 43 +++++++++++++++++++++++++++++++++++++++++++ include/acpi/acpi_bus.h | 2 ++ 3 files changed, 51 insertions(+), 25 deletions(-) (limited to 'include') diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index ada0b4cf2ba..4c25c3b7ef8 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -193,8 +193,6 @@ static acpi_status acpi_bus_online_companions(acpi_handle handle, u32 lvl, static int acpi_scan_hot_remove(struct acpi_device *device) { acpi_handle handle = device->handle; - struct acpi_object_list arg_list; - union acpi_object arg; struct device *errdev; acpi_status status; unsigned long long sta; @@ -257,32 +255,15 @@ static int acpi_scan_hot_remove(struct acpi_device *device) put_device(&device->dev); device = NULL; - if (acpi_has_method(handle, "_LCK")) { - arg_list.count = 1; - arg_list.pointer = &arg; - arg.type = ACPI_TYPE_INTEGER; - arg.integer.value = 0; - acpi_evaluate_object(handle, "_LCK", &arg_list, NULL); - } - - arg_list.count = 1; - arg_list.pointer = &arg; - arg.type = ACPI_TYPE_INTEGER; - arg.integer.value = 1; - + acpi_evaluate_lck(handle, 0); /* * TBD: _EJD support. */ - status = acpi_evaluate_object(handle, "_EJ0", &arg_list, NULL); - if (ACPI_FAILURE(status)) { - if (status == AE_NOT_FOUND) { - return -ENODEV; - } else { - acpi_handle_warn(handle, "Eject failed (0x%x)\n", - status); - return -EIO; - } - } + status = acpi_evaluate_ej0(handle); + if (status == AE_NOT_FOUND) + return -ENODEV; + else if (ACPI_FAILURE(status)) + return -EIO; /* * Verify if eject was indeed successful. If not, log an error diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c index 87b85882b5d..552248b0005 100644 --- a/drivers/acpi/utils.c +++ b/drivers/acpi/utils.c @@ -522,3 +522,46 @@ acpi_status acpi_execute_simple_method(acpi_handle handle, char *method, return acpi_evaluate_object(handle, method, &arg_list, NULL); } EXPORT_SYMBOL(acpi_execute_simple_method); + +/** + * acpi_evaluate_ej0: Evaluate _EJ0 method for hotplug operations + * @handle: ACPI device handle + * + * Evaluate device's _EJ0 method for hotplug operations. + */ +acpi_status acpi_evaluate_ej0(acpi_handle handle) +{ + acpi_status status; + + status = acpi_execute_simple_method(handle, "_EJ0", 1); + if (status == AE_NOT_FOUND) + acpi_handle_warn(handle, "No _EJ0 support for device\n"); + else if (ACPI_FAILURE(status)) + acpi_handle_warn(handle, "Eject failed (0x%x)\n", status); + + return status; +} + +/** + * acpi_evaluate_lck: Evaluate _LCK method to lock/unlock device + * @handle: ACPI device handle + * @lock: lock device if non-zero, otherwise unlock device + * + * Evaluate device's _LCK method if present to lock/unlock device + */ +acpi_status acpi_evaluate_lck(acpi_handle handle, int lock) +{ + acpi_status status; + + status = acpi_execute_simple_method(handle, "_LCK", !!lock); + if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { + if (lock) + acpi_handle_warn(handle, + "Locking device failed (0x%x)\n", status); + else + acpi_handle_warn(handle, + "Unlocking device failed (0x%x)\n", status); + } + + return status; +} diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index e3862587b9d..f499157b04e 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -60,6 +60,8 @@ acpi_get_physical_device_location(acpi_handle handle, struct acpi_pld_info **pld bool acpi_has_method(acpi_handle handle, char *name); acpi_status acpi_execute_simple_method(acpi_handle handle, char *method, u64 arg); +acpi_status acpi_evaluate_ej0(acpi_handle handle); +acpi_status acpi_evaluate_lck(acpi_handle handle, int lock); #ifdef CONFIG_ACPI -- cgit v1.2.3-70-g09d2 From ebf4df8db0e7e5db9f7fca5fcd0c2b90ac954385 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Sat, 29 Jun 2013 00:24:41 +0800 Subject: ACPI: Export acpi_(bay)|(dock)_match() from scan.c Functions acpi_dock_match() and acpi_bay_match() in scan.c can be shared with dock.c to reduce code duplication, so export them as global functions. Also add a new function acpi_ata_match() to check whether an ACPI device object represents an ATA device. [rjw: Changelog] Signed-off-by: Jiang Liu Signed-off-by: Rafael J. Wysocki --- drivers/acpi/scan.c | 77 +++++++++++++++++++++++-------------------------- include/acpi/acpi_bus.h | 3 ++ 2 files changed, 39 insertions(+), 41 deletions(-) (limited to 'include') diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 4c25c3b7ef8..62e2055e880 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -1479,44 +1479,46 @@ static void acpi_device_get_busid(struct acpi_device *device) } } +/* + * acpi_ata_match - see if an acpi object is an ATA device + * + * If an acpi object has one of the ACPI ATA methods defined, + * then we can safely call it an ATA device. + */ +bool acpi_ata_match(acpi_handle handle) +{ + return acpi_has_method(handle, "_GTF") || + acpi_has_method(handle, "_GTM") || + acpi_has_method(handle, "_STM") || + acpi_has_method(handle, "_SDD"); +} + /* * acpi_bay_match - see if an acpi object is an ejectable driver bay * * If an acpi object is ejectable and has one of the ACPI ATA methods defined, * then we can safely call it an ejectable drive bay */ -static int acpi_bay_match(acpi_handle handle) +bool acpi_bay_match(acpi_handle handle) { acpi_handle phandle; if (!acpi_has_method(handle, "_EJ0")) - return -ENODEV; + return false; + if (acpi_ata_match(handle)) + return true; + if (ACPI_FAILURE(acpi_get_parent(handle, &phandle))) + return false; - if (acpi_has_method(handle, "_GTF") || - acpi_has_method(handle, "_GTM") || - acpi_has_method(handle, "_STM") || - acpi_has_method(handle, "_SDD")) - return 0; - - if (acpi_get_parent(handle, &phandle)) - return -ENODEV; - - if (acpi_has_method(phandle, "_GTF") || - acpi_has_method(phandle, "_GTM") || - acpi_has_method(phandle, "_STM") || - acpi_has_method(phandle, "_SDD")) - return 0; - - return -ENODEV; + return acpi_ata_match(phandle); } /* * acpi_dock_match - see if an acpi object has a _DCK method */ -static int acpi_dock_match(acpi_handle handle) +bool acpi_dock_match(acpi_handle handle) { - acpi_handle tmp; - return acpi_get_handle(handle, "_DCK", &tmp); + return acpi_has_method(handle, "_DCK"); } const char *acpi_device_hid(struct acpi_device *device) @@ -1554,33 +1556,26 @@ static void acpi_add_id(struct acpi_device_pnp *pnp, const char *dev_id) * lacks the SMBUS01 HID and the methods do not have the necessary "_" * prefix. Work around this. */ -static int acpi_ibm_smbus_match(acpi_handle handle) +static bool acpi_ibm_smbus_match(acpi_handle handle) { - struct acpi_buffer path = {ACPI_ALLOCATE_BUFFER, NULL}; - int result; + char node_name[ACPI_PATH_SEGMENT_LENGTH]; + struct acpi_buffer path = { sizeof(node_name), node_name }; if (!dmi_name_in_vendors("IBM")) - return -ENODEV; + return false; /* Look for SMBS object */ - result = acpi_get_name(handle, ACPI_SINGLE_NAME, &path); - if (result) - return result; - - if (strcmp("SMBS", path.pointer)) { - result = -ENODEV; - goto out; - } + if (ACPI_FAILURE(acpi_get_name(handle, ACPI_SINGLE_NAME, &path)) || + strcmp("SMBS", path.pointer)) + return false; /* Does it have the necessary (but misnamed) methods? */ - result = -ENODEV; if (acpi_has_method(handle, "SBI") && acpi_has_method(handle, "SBR") && acpi_has_method(handle, "SBW")) - result = 0; -out: - kfree(path.pointer); - return result; + return true; + + return false; } static void acpi_set_pnp_ids(acpi_handle handle, struct acpi_device_pnp *pnp, @@ -1628,11 +1623,11 @@ static void acpi_set_pnp_ids(acpi_handle handle, struct acpi_device_pnp *pnp, */ if (acpi_is_video_device(handle)) acpi_add_id(pnp, ACPI_VIDEO_HID); - else if (ACPI_SUCCESS(acpi_bay_match(handle))) + else if (acpi_bay_match(handle)) acpi_add_id(pnp, ACPI_BAY_HID); - else if (ACPI_SUCCESS(acpi_dock_match(handle))) + else if (acpi_dock_match(handle)) acpi_add_id(pnp, ACPI_DOCK_HID); - else if (!acpi_ibm_smbus_match(handle)) + else if (acpi_ibm_smbus_match(handle)) acpi_add_id(pnp, ACPI_SMBUS_IBM_HID); else if (list_empty(&pnp->ids) && handle == ACPI_ROOT_OBJECT) { acpi_add_id(pnp, ACPI_BUS_HID); /* \_SB, LNXSYBUS */ diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index f499157b04e..facc0ba6dd2 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -62,6 +62,9 @@ acpi_status acpi_execute_simple_method(acpi_handle handle, char *method, u64 arg); acpi_status acpi_evaluate_ej0(acpi_handle handle); acpi_status acpi_evaluate_lck(acpi_handle handle, int lock); +bool acpi_ata_match(acpi_handle handle); +bool acpi_bay_match(acpi_handle handle); +bool acpi_dock_match(acpi_handle handle); #ifdef CONFIG_ACPI -- cgit v1.2.3-70-g09d2 From f716fc2ac037c45a6c641eb9f20ec602e8d04e14 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Sun, 30 Jun 2013 23:49:55 +0200 Subject: ACPI: Drop ACPI bus notifier call chain There are no users of the ACPI bus notifier call chain, acpi_bus_notify_list, any more, so drop it. Signed-off-by: Rafael J. Wysocki --- drivers/acpi/bus.c | 16 ---------------- include/acpi/acpi_bus.h | 2 -- 2 files changed, 18 deletions(-) (limited to 'include') diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index a5a032e2344..6fd27a9abcd 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -499,19 +499,6 @@ static void acpi_bus_check_scope(acpi_handle handle) */ } -static BLOCKING_NOTIFIER_HEAD(acpi_bus_notify_list); -int register_acpi_bus_notifier(struct notifier_block *nb) -{ - return blocking_notifier_chain_register(&acpi_bus_notify_list, nb); -} -EXPORT_SYMBOL_GPL(register_acpi_bus_notifier); - -void unregister_acpi_bus_notifier(struct notifier_block *nb) -{ - blocking_notifier_chain_unregister(&acpi_bus_notify_list, nb); -} -EXPORT_SYMBOL_GPL(unregister_acpi_bus_notifier); - /** * acpi_bus_notify * --------------- @@ -525,9 +512,6 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data) ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Notification %#02x to handle %p\n", type, handle)); - blocking_notifier_call_chain(&acpi_bus_notify_list, - type, (void *)handle); - switch (type) { case ACPI_NOTIFY_BUS_CHECK: diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index facc0ba6dd2..71f3fd429fd 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -366,8 +366,6 @@ extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32); extern int register_acpi_notifier(struct notifier_block *); extern int unregister_acpi_notifier(struct notifier_block *); -extern int register_acpi_bus_notifier(struct notifier_block *nb); -extern void unregister_acpi_bus_notifier(struct notifier_block *nb); /* * External Functions */ -- cgit v1.2.3-70-g09d2 From e6c215f15a1cbf4cdd6996d95fba0c0d6c0f3ccc Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 5 Jul 2013 03:02:25 +0200 Subject: ACPI / dock: Do not check CONFIG_ACPI_DOCK_MODULE Since commit 94add0f (ACPI / dock: Initialize ACPI dock subsystem upfront) the ACPI dock driver cannot be a module, so CONFIG_ACPI_DOCK_MODULE is never set. For this reason, simplify the preprocessor conditional in include/acpi/acpi_drivers.h referring to that sybbol unnecessarily. Signed-off-by: Rafael J. Wysocki --- include/acpi/acpi_drivers.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/acpi/acpi_drivers.h b/include/acpi/acpi_drivers.h index b420939f5eb..0cf85786ed2 100644 --- a/include/acpi/acpi_drivers.h +++ b/include/acpi/acpi_drivers.h @@ -117,7 +117,7 @@ struct acpi_dock_ops { acpi_notify_handler uevent; }; -#if defined(CONFIG_ACPI_DOCK) || defined(CONFIG_ACPI_DOCK_MODULE) +#ifdef CONFIG_ACPI_DOCK extern int is_dock_device(acpi_handle handle); extern int register_dock_notifier(struct notifier_block *nb); extern void unregister_dock_notifier(struct notifier_block *nb); @@ -150,6 +150,6 @@ static inline int register_hotplug_dock_device(acpi_handle handle, static inline void unregister_hotplug_dock_device(acpi_handle handle) { } -#endif +#endif /* CONFIG_ACPI_DOCK */ #endif /*__ACPI_DRIVERS_H__*/ -- cgit v1.2.3-70-g09d2 From f09ce741a03ad7de591aa47e760fbeee28567b63 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 5 Jul 2013 03:03:25 +0200 Subject: ACPI / dock / PCI: Drop ACPI dock notifier chain The only user of the ACPI dock notifier chain is the ACPI-based PCI hotplug (acpiphp) driver that uses it to carry out post-dock fixups needed by some systems with broken _DCK. However, it is not necessary to use a separate notifier chain for that, as it can be simply replaced with a new callback in struct acpi_dock_ops. For this reason, add a new .fixup() callback to struct acpi_dock_ops and make hotplug_dock_devices() execute it for all dock devices with hotplug operations registered. Accordingly, make acpiphp point that callback to the function carrying out the post-dock fixups and do not register a separate dock notifier for each device registering dock operations. Finally, drop the ACPI dock notifier chain that has no more users. Signed-off-by: Rafael J. Wysocki --- drivers/acpi/dock.c | 66 +++++++++++++++----------------------- drivers/pci/hotplug/acpiphp.h | 1 - drivers/pci/hotplug/acpiphp_glue.c | 18 +++-------- include/acpi/acpi_drivers.h | 10 +----- 4 files changed, 30 insertions(+), 65 deletions(-) (limited to 'include') diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c index 3e20b13fa27..c89a9c3b48b 100644 --- a/drivers/acpi/dock.c +++ b/drivers/acpi/dock.c @@ -51,8 +51,6 @@ MODULE_PARM_DESC(immediate_undock, "1 (default) will cause the driver to " " the driver to wait for userspace to write the undock sysfs file " " before undocking"); -static struct atomic_notifier_head dock_notifier_list; - static const struct acpi_device_id dock_device_ids[] = { {"LNXDOCK", 0}, {"", 0}, @@ -89,6 +87,12 @@ struct dock_dependent_device { #define DOCK_EVENT 3 #define UNDOCK_EVENT 2 +enum dock_callback_type { + DOCK_CALL_HANDLER, + DOCK_CALL_FIXUP, + DOCK_CALL_UEVENT, +}; + /***************************************************************************** * Dock Dependent device functions * *****************************************************************************/ @@ -179,7 +183,7 @@ static void dock_release_hotplug(struct dock_dependent_device *dd) } static void dock_hotplug_event(struct dock_dependent_device *dd, u32 event, - bool uevent) + enum dock_callback_type cb_type) { acpi_notify_handler cb = NULL; bool run = false; @@ -189,8 +193,18 @@ static void dock_hotplug_event(struct dock_dependent_device *dd, u32 event, if (dd->hp_context) { run = true; dd->hp_refcount++; - if (dd->hp_ops) - cb = uevent ? dd->hp_ops->uevent : dd->hp_ops->handler; + if (dd->hp_ops) { + switch (cb_type) { + case DOCK_CALL_FIXUP: + cb = dd->hp_ops->fixup; + break; + case DOCK_CALL_UEVENT: + cb = dd->hp_ops->uevent; + break; + default: + cb = dd->hp_ops->handler; + } + } } mutex_unlock(&hotplug_lock); @@ -372,9 +386,13 @@ static void hotplug_dock_devices(struct dock_station *ds, u32 event) { struct dock_dependent_device *dd; + /* Call driver specific post-dock fixups. */ + list_for_each_entry(dd, &ds->dependent_devices, list) + dock_hotplug_event(dd, event, DOCK_CALL_FIXUP); + /* Call driver specific hotplug functions. */ list_for_each_entry(dd, &ds->dependent_devices, list) - dock_hotplug_event(dd, event, false); + dock_hotplug_event(dd, event, DOCK_CALL_HANDLER); /* * Now make sure that an acpi_device is created for each dependent @@ -405,7 +423,7 @@ static void dock_event(struct dock_station *ds, u32 event, int num) kobject_uevent_env(&dev->kobj, KOBJ_CHANGE, envp); list_for_each_entry(dd, &ds->dependent_devices, list) - dock_hotplug_event(dd, event, true); + dock_hotplug_event(dd, event, DOCK_CALL_UEVENT); if (num != DOCK_EVENT) kobject_uevent_env(&dev->kobj, KOBJ_CHANGE, envp); @@ -487,37 +505,6 @@ static int dock_in_progress(struct dock_station *ds) return 0; } -/** - * register_dock_notifier - add yourself to the dock notifier list - * @nb: the callers notifier block - * - * If a driver wishes to be notified about dock events, they can - * use this function to put a notifier block on the dock notifier list. - * this notifier call chain will be called after a dock event, but - * before hotplugging any new devices. - */ -int register_dock_notifier(struct notifier_block *nb) -{ - if (!dock_station_count) - return -ENODEV; - - return atomic_notifier_chain_register(&dock_notifier_list, nb); -} -EXPORT_SYMBOL_GPL(register_dock_notifier); - -/** - * unregister_dock_notifier - remove yourself from the dock notifier list - * @nb: the callers notifier block - */ -void unregister_dock_notifier(struct notifier_block *nb) -{ - if (!dock_station_count) - return; - - atomic_notifier_chain_unregister(&dock_notifier_list, nb); -} -EXPORT_SYMBOL_GPL(unregister_dock_notifier); - /** * register_hotplug_dock_device - register a hotplug function * @handle: the handle of the device @@ -658,8 +645,6 @@ static void dock_notify(struct dock_station *ds, u32 event) complete_dock(ds); break; } - atomic_notifier_call_chain(&dock_notifier_list, - event, NULL); hotplug_dock_devices(ds, event); complete_dock(ds); dock_event(ds, event, DOCK_EVENT); @@ -945,7 +930,6 @@ void __init acpi_dock_init(void) return; } - ATOMIC_INIT_NOTIFIER_HEAD(&dock_notifier_list); pr_info(PREFIX "%s: %d docks/bays found\n", ACPI_DOCK_DRIVER_DESCRIPTION, dock_station_count); } diff --git a/drivers/pci/hotplug/acpiphp.h b/drivers/pci/hotplug/acpiphp.h index 6fdd49c6f0b..6c781edabcc 100644 --- a/drivers/pci/hotplug/acpiphp.h +++ b/drivers/pci/hotplug/acpiphp.h @@ -122,7 +122,6 @@ struct acpiphp_func { struct acpiphp_slot *slot; /* parent */ struct list_head sibling; - struct notifier_block nb; acpi_handle handle; u8 function; /* pci function# */ diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index a0a7133a1d1..8bfad0dc29a 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -119,15 +119,14 @@ static void free_bridge(struct kref *kref) * TBD - figure out a way to only call fixups for * systems that require them. */ -static int post_dock_fixups(struct notifier_block *nb, unsigned long val, - void *v) +static void post_dock_fixups(acpi_handle not_used, u32 event, void *data) { - struct acpiphp_func *func = container_of(nb, struct acpiphp_func, nb); + struct acpiphp_func *func = data; struct pci_bus *bus = func->slot->bridge->pci_bus; u32 buses; if (!bus->self) - return NOTIFY_OK; + return; /* fixup bad _DCK function that rewrites * secondary bridge on slot @@ -143,11 +142,11 @@ static int post_dock_fixups(struct notifier_block *nb, unsigned long val, | ((unsigned int)(bus->busn_res.end) << 16); pci_write_config_dword(bus->self, PCI_PRIMARY_BUS, buses); } - return NOTIFY_OK; } static const struct acpi_dock_ops acpiphp_dock_ops = { + .fixup = post_dock_fixups, .handler = hotplug_event_func, }; @@ -315,14 +314,6 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv) &acpiphp_dock_ops, newfunc, acpiphp_dock_init, acpiphp_dock_release)) dbg("failed to register dock device\n"); - - /* we need to be notified when dock events happen - * outside of the hotplug operation, since we may - * need to do fixups before we can hotplug. - */ - newfunc->nb.notifier_call = post_dock_fixups; - if (register_dock_notifier(&newfunc->nb)) - dbg("failed to register a dock notifier"); } /* install notify handler */ @@ -472,7 +463,6 @@ static void cleanup_bridge(struct acpiphp_bridge *bridge) list_for_each_entry(func, &slot->funcs, sibling) { if (is_dock_device(func->handle)) { unregister_hotplug_dock_device(func->handle); - unregister_dock_notifier(&func->nb); } if (!(func->flags & FUNC_HAS_DCK)) { status = acpi_remove_notify_handler(func->handle, diff --git a/include/acpi/acpi_drivers.h b/include/acpi/acpi_drivers.h index 0cf85786ed2..1cedfcb1bd8 100644 --- a/include/acpi/acpi_drivers.h +++ b/include/acpi/acpi_drivers.h @@ -113,14 +113,13 @@ void pci_acpi_crs_quirks(void); Dock Station -------------------------------------------------------------------------- */ struct acpi_dock_ops { + acpi_notify_handler fixup; acpi_notify_handler handler; acpi_notify_handler uevent; }; #ifdef CONFIG_ACPI_DOCK extern int is_dock_device(acpi_handle handle); -extern int register_dock_notifier(struct notifier_block *nb); -extern void unregister_dock_notifier(struct notifier_block *nb); extern int register_hotplug_dock_device(acpi_handle handle, const struct acpi_dock_ops *ops, void *context, @@ -132,13 +131,6 @@ static inline int is_dock_device(acpi_handle handle) { return 0; } -static inline int register_dock_notifier(struct notifier_block *nb) -{ - return -ENODEV; -} -static inline void unregister_dock_notifier(struct notifier_block *nb) -{ -} static inline int register_hotplug_dock_device(acpi_handle handle, const struct acpi_dock_ops *ops, void *context, -- cgit v1.2.3-70-g09d2 From 728ce22b696f9f1404a74d7b2279a65933553a1b Mon Sep 17 00:00:00 2001 From: Daniel Lezcano Date: Wed, 12 Jun 2013 15:08:51 +0200 Subject: cpuidle: Make cpuidle's sysfs directory dynamically allocated The cpuidle sysfs code is designed to have a single instance of per CPU cpuidle directory. It is not possible to remove the sysfs entry and create it again. This is not a problem with the current code but future changes will add CPU hotplug support to enable/disable the device, so it will need to remove the sysfs entry like other subsystems do. That won't be possible without this change, because the kobj is a static object which can't be reused for kobj_init_and_add(). Add cpuidle_device_kobj to be allocated dynamically when adding/removing a sysfs entry which is consistent with the other cpuidle's sysfs entries. An added benefit is that the sysfs code is now more self-contained and the includes needed for sysfs can be moved from cpuidle.h directly into sysfs.c so as to reduce the total number of headers dragged along with cpuidle.h. [rjw: Changelog] Signed-off-by: Daniel Lezcano Signed-off-by: Rafael J. Wysocki --- drivers/cpuidle/sysfs.c | 63 +++++++++++++++++++++++++++++++++++++------------ include/linux/cpuidle.h | 7 +++--- 2 files changed, 51 insertions(+), 19 deletions(-) (limited to 'include') diff --git a/drivers/cpuidle/sysfs.c b/drivers/cpuidle/sysfs.c index 7d4448a9fbb..8739cc05228 100644 --- a/drivers/cpuidle/sysfs.c +++ b/drivers/cpuidle/sysfs.c @@ -11,8 +11,10 @@ #include #include #include +#include #include #include +#include #include "cpuidle.h" @@ -167,14 +169,27 @@ struct cpuidle_attr { #define define_one_rw(_name, show, store) \ static struct cpuidle_attr attr_##_name = __ATTR(_name, 0644, show, store) -#define kobj_to_cpuidledev(k) container_of(k, struct cpuidle_device, kobj) #define attr_to_cpuidleattr(a) container_of(a, struct cpuidle_attr, attr) +struct cpuidle_device_kobj { + struct cpuidle_device *dev; + struct completion kobj_unregister; + struct kobject kobj; +}; + +static inline struct cpuidle_device *to_cpuidle_device(struct kobject *kobj) +{ + struct cpuidle_device_kobj *kdev = + container_of(kobj, struct cpuidle_device_kobj, kobj); + + return kdev->dev; +} + static ssize_t cpuidle_show(struct kobject *kobj, struct attribute *attr, char *buf) { int ret = -EIO; - struct cpuidle_device *dev = kobj_to_cpuidledev(kobj); + struct cpuidle_device *dev = to_cpuidle_device(kobj); struct cpuidle_attr *cattr = attr_to_cpuidleattr(attr); if (cattr->show) { @@ -189,7 +204,7 @@ static ssize_t cpuidle_store(struct kobject *kobj, struct attribute *attr, const char *buf, size_t count) { int ret = -EIO; - struct cpuidle_device *dev = kobj_to_cpuidledev(kobj); + struct cpuidle_device *dev = to_cpuidle_device(kobj); struct cpuidle_attr *cattr = attr_to_cpuidleattr(attr); if (cattr->store) { @@ -207,9 +222,10 @@ static const struct sysfs_ops cpuidle_sysfs_ops = { static void cpuidle_sysfs_release(struct kobject *kobj) { - struct cpuidle_device *dev = kobj_to_cpuidledev(kobj); + struct cpuidle_device_kobj *kdev = + container_of(kobj, struct cpuidle_device_kobj, kobj); - complete(&dev->kobj_unregister); + complete(&kdev->kobj_unregister); } static struct kobj_type ktype_cpuidle = { @@ -377,6 +393,7 @@ static int cpuidle_add_state_sysfs(struct cpuidle_device *device) { int i, ret = -ENOMEM; struct cpuidle_state_kobj *kobj; + struct cpuidle_device_kobj *kdev = device->kobj_dev; struct cpuidle_driver *drv = cpuidle_get_cpu_driver(device); /* state statistics */ @@ -389,7 +406,7 @@ static int cpuidle_add_state_sysfs(struct cpuidle_device *device) init_completion(&kobj->kobj_unregister); ret = kobject_init_and_add(&kobj->kobj, &ktype_state_cpuidle, - &device->kobj, "state%d", i); + &kdev->kobj, "state%d", i); if (ret) { kfree(kobj); goto error_state; @@ -506,6 +523,7 @@ static struct kobj_type ktype_driver_cpuidle = { static int cpuidle_add_driver_sysfs(struct cpuidle_device *dev) { struct cpuidle_driver_kobj *kdrv; + struct cpuidle_device_kobj *kdev = dev->kobj_dev; struct cpuidle_driver *drv = cpuidle_get_cpu_driver(dev); int ret; @@ -517,7 +535,7 @@ static int cpuidle_add_driver_sysfs(struct cpuidle_device *dev) init_completion(&kdrv->kobj_unregister); ret = kobject_init_and_add(&kdrv->kobj, &ktype_driver_cpuidle, - &dev->kobj, "driver"); + &kdev->kobj, "driver"); if (ret) { kfree(kdrv); return ret; @@ -586,16 +604,28 @@ void cpuidle_remove_device_sysfs(struct cpuidle_device *device) */ int cpuidle_add_sysfs(struct cpuidle_device *dev) { + struct cpuidle_device_kobj *kdev; struct device *cpu_dev = get_cpu_device((unsigned long)dev->cpu); int error; - init_completion(&dev->kobj_unregister); + kdev = kzalloc(sizeof(*kdev), GFP_KERNEL); + if (!kdev) + return -ENOMEM; + kdev->dev = dev; + dev->kobj_dev = kdev; + + init_completion(&kdev->kobj_unregister); + + error = kobject_init_and_add(&kdev->kobj, &ktype_cpuidle, &cpu_dev->kobj, + "cpuidle"); + if (error) { + kfree(kdev); + return error; + } - error = kobject_init_and_add(&dev->kobj, &ktype_cpuidle, &cpu_dev->kobj, - "cpuidle"); - if (!error) - kobject_uevent(&dev->kobj, KOBJ_ADD); - return error; + kobject_uevent(&kdev->kobj, KOBJ_ADD); + + return 0; } /** @@ -604,6 +634,9 @@ int cpuidle_add_sysfs(struct cpuidle_device *dev) */ void cpuidle_remove_sysfs(struct cpuidle_device *dev) { - kobject_put(&dev->kobj); - wait_for_completion(&dev->kobj_unregister); + struct cpuidle_device_kobj *kdev = dev->kobj_dev; + + kobject_put(&kdev->kobj); + wait_for_completion(&kdev->kobj_unregister); + kfree(kdev); } diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index 0bc4b74668e..b922db53b7a 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -13,8 +13,6 @@ #include #include -#include -#include #include #define CPUIDLE_STATE_MAX 10 @@ -61,6 +59,8 @@ struct cpuidle_state { #define CPUIDLE_DRIVER_FLAGS_MASK (0xFFFF0000) +struct cpuidle_device_kobj; + struct cpuidle_device { unsigned int registered:1; unsigned int enabled:1; @@ -71,9 +71,8 @@ struct cpuidle_device { struct cpuidle_state_usage states_usage[CPUIDLE_STATE_MAX]; struct cpuidle_state_kobj *kobjs[CPUIDLE_STATE_MAX]; struct cpuidle_driver_kobj *kobj_driver; + struct cpuidle_device_kobj *kobj_dev; struct list_head device_list; - struct kobject kobj; - struct completion kobj_unregister; #ifdef CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED int safe_state_index; -- cgit v1.2.3-70-g09d2 From 1a7064380e6639e1cc5ed609ceb1ed46f3f188e3 Mon Sep 17 00:00:00 2001 From: Daniel Lezcano Date: Wed, 12 Jun 2013 15:08:52 +0200 Subject: cpuidle: Add missing forward declarations of structures Add missing forward declarations of struct cpuidle_state_kobj and struct cpuidle_driver_kobj in cpuidle.h. [rjw: Changelog] Signed-off-by: Daniel Lezcano Signed-off-by: Rafael J. Wysocki --- include/linux/cpuidle.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index b922db53b7a..781addc66f0 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -60,6 +60,8 @@ struct cpuidle_state { #define CPUIDLE_DRIVER_FLAGS_MASK (0xFFFF0000) struct cpuidle_device_kobj; +struct cpuidle_state_kobj; +struct cpuidle_driver_kobj; struct cpuidle_device { unsigned int registered:1; -- cgit v1.2.3-70-g09d2 From 1696d9dc57e062ce5200f6a42a6aaada15b434bb Mon Sep 17 00:00:00 2001 From: Thomas Renninger Date: Mon, 15 Jul 2013 10:15:09 +0200 Subject: ACPI: Remove the old /proc/acpi/event interface It is quite some time that this one has been deprecated. Get rid of it. Should some really important user be overseen, it may be reverted and the userspace program worked on first, but it is time to do something to get rid of this old stuff... Signed-off-by: Thomas Renninger Acked-by: Matthew Garrett Acked-by: Henrique de Moraes Holschuh Signed-off-by: Rafael J. Wysocki --- Documentation/laptops/asus-laptop.txt | 8 +-- Documentation/laptops/sony-laptop.txt | 8 +-- drivers/acpi/Kconfig | 18 ------ drivers/acpi/ac.c | 1 - drivers/acpi/acpi_pad.c | 1 - drivers/acpi/battery.c | 2 - drivers/acpi/bus.c | 98 ----------------------------- drivers/acpi/button.c | 2 - drivers/acpi/event.c | 106 -------------------------------- drivers/acpi/processor_driver.c | 4 -- drivers/acpi/sbs.c | 15 +---- drivers/acpi/thermal.c | 3 - drivers/acpi/video.c | 10 --- drivers/char/sonypi.c | 5 -- drivers/pci/hotplug/acpiphp_ibm.c | 1 - drivers/platform/x86/asus-laptop.c | 1 - drivers/platform/x86/eeepc-laptop.c | 1 - drivers/platform/x86/fujitsu-laptop.c | 4 -- drivers/platform/x86/panasonic-laptop.c | 3 - drivers/platform/x86/sony-laptop.c | 4 -- drivers/platform/x86/thinkpad_acpi.c | 11 ---- include/acpi/acpi_bus.h | 9 --- 22 files changed, 10 insertions(+), 305 deletions(-) (limited to 'include') diff --git a/Documentation/laptops/asus-laptop.txt b/Documentation/laptops/asus-laptop.txt index 69f9fb3701e..79a1bc675a8 100644 --- a/Documentation/laptops/asus-laptop.txt +++ b/Documentation/laptops/asus-laptop.txt @@ -8,8 +8,8 @@ http://acpi4asus.sf.net/ This driver provides support for extra features of ACPI-compatible ASUS laptops. It may also support some MEDION, JVC or VICTOR laptops (such as MEDION 9675 or - VICTOR XP7210 for example). It makes all the extra buttons generate standard - ACPI events that go through /proc/acpi/events and input events (like keyboards). + VICTOR XP7210 for example). It makes all the extra buttons generate input + events (like keyboards). On some models adds support for changing the display brightness and output, switching the LCD backlight on and off, and most importantly, allows you to blink those fancy LEDs intended for reporting mail and wireless status. @@ -55,8 +55,8 @@ Usage DSDT) to me. That's all, now, all the events generated by the hotkeys of your laptop - should be reported in your /proc/acpi/event entry. You can check with - "acpi_listen". + should be reported via netlink events. You can check with + "acpi_genl monitor" (part of the acpica project). Hotkeys are also reported as input keys (like keyboards) you can check which key are supported using "xev" under X11. diff --git a/Documentation/laptops/sony-laptop.txt b/Documentation/laptops/sony-laptop.txt index 0d5ac7f5287..978b1e61515 100644 --- a/Documentation/laptops/sony-laptop.txt +++ b/Documentation/laptops/sony-laptop.txt @@ -12,10 +12,10 @@ Fn keys (hotkeys): ------------------ Some models report hotkeys through the SNC or SPIC devices, such events are reported both through the ACPI subsystem as acpi events and through the INPUT -subsystem. See the logs of acpid or /proc/acpi/event and -/proc/bus/input/devices to find out what those events are and which input -devices are created by the driver. Additionally, loading the driver with the -debug option will report all events in the kernel log. +subsystem. See the logs of /proc/bus/input/devices to find out what those +events are and which input devices are created by the driver. +Additionally, loading the driver with the debug option will report all events +in the kernel log. The "scancodes" passed to the input system (that can be remapped with udev) are indexes to the table "sony_laptop_input_keycode_map" in the sony-laptop.c diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index 100bd724f64..3278a210c43 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -91,24 +91,6 @@ config ACPI_EC_DEBUGFS Thus this option is a debug option that helps to write ACPI drivers and can be used to identify ACPI code or EC firmware bugs. -config ACPI_PROC_EVENT - bool "Deprecated /proc/acpi/event support" - depends on PROC_FS - default y - help - A user-space daemon, acpid, typically reads /proc/acpi/event - and handles all ACPI-generated events. - - These events are now delivered to user-space either - via the input layer or as netlink events. - - This build option enables the old code for legacy - user-space implementation. After some time, this will - be moved under CONFIG_ACPI_PROCFS, and then deleted. - - Say Y here to retain the old behaviour. Say N if your - user-space is newer than kernel 2.6.23 (September 2007). - config ACPI_AC tristate "AC Adapter" depends on X86 diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c index 4f4e741d34b..f37beaa3275 100644 --- a/drivers/acpi/ac.c +++ b/drivers/acpi/ac.c @@ -267,7 +267,6 @@ static void acpi_ac_notify(struct acpi_device *device, u32 event) msleep(ac_sleep_before_get_state_ms); acpi_ac_get_state(ac); - acpi_bus_generate_proc_event(device, event, (u32) ac->state); acpi_bus_generate_netlink_event(device->pnp.device_class, dev_name(&device->dev), event, (u32) ac->state); diff --git a/drivers/acpi/acpi_pad.c b/drivers/acpi/acpi_pad.c index 27bb6a91de5..6230637054c 100644 --- a/drivers/acpi/acpi_pad.c +++ b/drivers/acpi/acpi_pad.c @@ -452,7 +452,6 @@ static void acpi_pad_notify(acpi_handle handle, u32 event, switch (event) { case ACPI_PROCESSOR_AGGREGATOR_NOTIFY: acpi_pad_handle_notify(handle); - acpi_bus_generate_proc_event(device, event, 0); acpi_bus_generate_netlink_event(device->pnp.device_class, dev_name(&device->dev), event, 0); break; diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c index 082b4dd252a..33dfa851899 100644 --- a/drivers/acpi/battery.c +++ b/drivers/acpi/battery.c @@ -1034,8 +1034,6 @@ static void acpi_battery_notify(struct acpi_device *device, u32 event) if (event == ACPI_BATTERY_NOTIFY_INFO) acpi_battery_refresh(battery); acpi_battery_update(battery); - acpi_bus_generate_proc_event(device, event, - acpi_battery_present(battery)); acpi_bus_generate_netlink_event(device->pnp.device_class, dev_name(&device->dev), event, acpi_battery_present(battery)); diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index a5bb33bab44..b6e9a3786e2 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -345,104 +345,6 @@ static void acpi_bus_osc_support(void) /* do we need to check other returned cap? Sounds no */ } -/* -------------------------------------------------------------------------- - Event Management - -------------------------------------------------------------------------- */ - -#ifdef CONFIG_ACPI_PROC_EVENT -static DEFINE_SPINLOCK(acpi_bus_event_lock); - -LIST_HEAD(acpi_bus_event_list); -DECLARE_WAIT_QUEUE_HEAD(acpi_bus_event_queue); - -extern int event_is_open; - -int acpi_bus_generate_proc_event4(const char *device_class, const char *bus_id, u8 type, int data) -{ - struct acpi_bus_event *event; - unsigned long flags; - - /* drop event on the floor if no one's listening */ - if (!event_is_open) - return 0; - - event = kzalloc(sizeof(struct acpi_bus_event), GFP_ATOMIC); - if (!event) - return -ENOMEM; - - strcpy(event->device_class, device_class); - strcpy(event->bus_id, bus_id); - event->type = type; - event->data = data; - - spin_lock_irqsave(&acpi_bus_event_lock, flags); - list_add_tail(&event->node, &acpi_bus_event_list); - spin_unlock_irqrestore(&acpi_bus_event_lock, flags); - - wake_up_interruptible(&acpi_bus_event_queue); - - return 0; - -} - -EXPORT_SYMBOL_GPL(acpi_bus_generate_proc_event4); - -int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data) -{ - if (!device) - return -EINVAL; - return acpi_bus_generate_proc_event4(device->pnp.device_class, - device->pnp.bus_id, type, data); -} - -EXPORT_SYMBOL(acpi_bus_generate_proc_event); - -int acpi_bus_receive_event(struct acpi_bus_event *event) -{ - unsigned long flags; - struct acpi_bus_event *entry = NULL; - - DECLARE_WAITQUEUE(wait, current); - - - if (!event) - return -EINVAL; - - if (list_empty(&acpi_bus_event_list)) { - - set_current_state(TASK_INTERRUPTIBLE); - add_wait_queue(&acpi_bus_event_queue, &wait); - - if (list_empty(&acpi_bus_event_list)) - schedule(); - - remove_wait_queue(&acpi_bus_event_queue, &wait); - set_current_state(TASK_RUNNING); - - if (signal_pending(current)) - return -ERESTARTSYS; - } - - spin_lock_irqsave(&acpi_bus_event_lock, flags); - if (!list_empty(&acpi_bus_event_list)) { - entry = list_entry(acpi_bus_event_list.next, - struct acpi_bus_event, node); - list_del(&entry->node); - } - spin_unlock_irqrestore(&acpi_bus_event_lock, flags); - - if (!entry) - return -ENODEV; - - memcpy(event, entry, sizeof(struct acpi_bus_event)); - - kfree(entry); - - return 0; -} - -#endif /* CONFIG_ACPI_PROC_EVENT */ - /* -------------------------------------------------------------------------- Notification Handling -------------------------------------------------------------------------- */ diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c index d2e617b5b3f..a55773801c5 100644 --- a/drivers/acpi/button.c +++ b/drivers/acpi/button.c @@ -303,8 +303,6 @@ static void acpi_button_notify(struct acpi_device *device, u32 event) pm_wakeup_event(&device->dev, 0); } - - acpi_bus_generate_proc_event(device, event, ++button->pushed); break; default: ACPI_DEBUG_PRINT((ACPI_DB_INFO, diff --git a/drivers/acpi/event.c b/drivers/acpi/event.c index 1442737cede..8247fcdde07 100644 --- a/drivers/acpi/event.c +++ b/drivers/acpi/event.c @@ -21,100 +21,6 @@ #define _COMPONENT ACPI_SYSTEM_COMPONENT ACPI_MODULE_NAME("event"); -#ifdef CONFIG_ACPI_PROC_EVENT -/* Global vars for handling event proc entry */ -static DEFINE_SPINLOCK(acpi_system_event_lock); -int event_is_open = 0; -extern struct list_head acpi_bus_event_list; -extern wait_queue_head_t acpi_bus_event_queue; - -static int acpi_system_open_event(struct inode *inode, struct file *file) -{ - spin_lock_irq(&acpi_system_event_lock); - - if (event_is_open) - goto out_busy; - - event_is_open = 1; - - spin_unlock_irq(&acpi_system_event_lock); - return 0; - - out_busy: - spin_unlock_irq(&acpi_system_event_lock); - return -EBUSY; -} - -static ssize_t -acpi_system_read_event(struct file *file, char __user * buffer, size_t count, - loff_t * ppos) -{ - int result = 0; - struct acpi_bus_event event; - static char str[ACPI_MAX_STRING]; - static int chars_remaining = 0; - static char *ptr; - - if (!chars_remaining) { - memset(&event, 0, sizeof(struct acpi_bus_event)); - - if ((file->f_flags & O_NONBLOCK) - && (list_empty(&acpi_bus_event_list))) - return -EAGAIN; - - result = acpi_bus_receive_event(&event); - if (result) - return result; - - chars_remaining = sprintf(str, "%s %s %08x %08x\n", - event.device_class ? event. - device_class : "", - event.bus_id ? event. - bus_id : "", event.type, - event.data); - ptr = str; - } - - if (chars_remaining < count) { - count = chars_remaining; - } - - if (copy_to_user(buffer, ptr, count)) - return -EFAULT; - - *ppos += count; - chars_remaining -= count; - ptr += count; - - return count; -} - -static int acpi_system_close_event(struct inode *inode, struct file *file) -{ - spin_lock_irq(&acpi_system_event_lock); - event_is_open = 0; - spin_unlock_irq(&acpi_system_event_lock); - return 0; -} - -static unsigned int acpi_system_poll_event(struct file *file, poll_table * wait) -{ - poll_wait(file, &acpi_bus_event_queue, wait); - if (!list_empty(&acpi_bus_event_list)) - return POLLIN | POLLRDNORM; - return 0; -} - -static const struct file_operations acpi_system_event_ops = { - .owner = THIS_MODULE, - .open = acpi_system_open_event, - .read = acpi_system_read_event, - .release = acpi_system_close_event, - .poll = acpi_system_poll_event, - .llseek = default_llseek, -}; -#endif /* CONFIG_ACPI_PROC_EVENT */ - /* ACPI notifier chain */ static BLOCKING_NOTIFIER_HEAD(acpi_chain_head); @@ -280,9 +186,6 @@ static int acpi_event_genetlink_init(void) static int __init acpi_event_init(void) { -#ifdef CONFIG_ACPI_PROC_EVENT - struct proc_dir_entry *entry; -#endif int error = 0; if (acpi_disabled) @@ -293,15 +196,6 @@ static int __init acpi_event_init(void) if (error) printk(KERN_WARNING PREFIX "Failed to create genetlink family for ACPI event\n"); - -#ifdef CONFIG_ACPI_PROC_EVENT - /* 'event' [R] */ - entry = proc_create("event", S_IRUSR, acpi_root_dir, - &acpi_system_event_ops); - if (!entry) - return -ENODEV; -#endif - return 0; } diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c index 823be116619..94b7b3b5559 100644 --- a/drivers/acpi/processor_driver.c +++ b/drivers/acpi/processor_driver.c @@ -91,21 +91,17 @@ static void acpi_processor_notify(acpi_handle handle, u32 event, void *data) acpi_processor_ppc_has_changed(pr, 1); if (saved == pr->performance_platform_limit) break; - acpi_bus_generate_proc_event(device, event, - pr->performance_platform_limit); acpi_bus_generate_netlink_event(device->pnp.device_class, dev_name(&device->dev), event, pr->performance_platform_limit); break; case ACPI_PROCESSOR_NOTIFY_POWER: acpi_processor_cst_has_changed(pr); - acpi_bus_generate_proc_event(device, event, 0); acpi_bus_generate_netlink_event(device->pnp.device_class, dev_name(&device->dev), event, 0); break; case ACPI_PROCESSOR_NOTIFY_THROTTLING: acpi_processor_tstate_has_changed(pr); - acpi_bus_generate_proc_event(device, event, 0); acpi_bus_generate_netlink_event(device->pnp.device_class, dev_name(&device->dev), event, 0); break; diff --git a/drivers/acpi/sbs.c b/drivers/acpi/sbs.c index b6241eeb113..aef7e1cd1e5 100644 --- a/drivers/acpi/sbs.c +++ b/drivers/acpi/sbs.c @@ -873,14 +873,9 @@ static void acpi_sbs_callback(void *context) u8 saved_charger_state = sbs->charger_present; u8 saved_battery_state; acpi_ac_get_present(sbs); - if (sbs->charger_present != saved_charger_state) { -#ifdef CONFIG_ACPI_PROC_EVENT - acpi_bus_generate_proc_event4(ACPI_AC_CLASS, ACPI_AC_DIR_NAME, - ACPI_SBS_NOTIFY_STATUS, - sbs->charger_present); -#endif + if (sbs->charger_present != saved_charger_state) kobject_uevent(&sbs->charger.dev->kobj, KOBJ_CHANGE); - } + if (sbs->manager_present) { for (id = 0; id < MAX_SBS_BAT; ++id) { if (!(sbs->batteries_supported & (1 << id))) @@ -890,12 +885,6 @@ static void acpi_sbs_callback(void *context) acpi_battery_read(bat); if (saved_battery_state == bat->present) continue; -#ifdef CONFIG_ACPI_PROC_EVENT - acpi_bus_generate_proc_event4(ACPI_BATTERY_CLASS, - bat->name, - ACPI_SBS_NOTIFY_STATUS, - bat->present); -#endif kobject_uevent(&bat->bat.dev->kobj, KOBJ_CHANGE); } } diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c index a33821ca389..547a906a766 100644 --- a/drivers/acpi/thermal.c +++ b/drivers/acpi/thermal.c @@ -769,7 +769,6 @@ static int thermal_notify(struct thermal_zone_device *thermal, int trip, else return 0; - acpi_bus_generate_proc_event(tz->device, type, 1); acpi_bus_generate_netlink_event(tz->device->pnp.device_class, dev_name(&tz->device->dev), type, 1); @@ -980,14 +979,12 @@ static void acpi_thermal_notify(struct acpi_device *device, u32 event) case ACPI_THERMAL_NOTIFY_THRESHOLDS: acpi_thermal_trips_update(tz, ACPI_TRIPS_REFRESH_THRESHOLDS); acpi_thermal_check(tz); - acpi_bus_generate_proc_event(device, event, 0); acpi_bus_generate_netlink_event(device->pnp.device_class, dev_name(&device->dev), event, 0); break; case ACPI_THERMAL_NOTIFY_DEVICES: acpi_thermal_trips_update(tz, ACPI_TRIPS_REFRESH_DEVICES); acpi_thermal_check(tz); - acpi_bus_generate_proc_event(device, event, 0); acpi_bus_generate_netlink_event(device->pnp.device_class, dev_name(&device->dev), event, 0); break; diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index 5d7075d2570..8f91a378319 100644 --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -1556,7 +1556,6 @@ static void acpi_video_bus_notify(struct acpi_device *device, u32 event) switch (event) { case ACPI_VIDEO_NOTIFY_SWITCH: /* User requested a switch, * most likely via hotkey. */ - acpi_bus_generate_proc_event(device, event, 0); keycode = KEY_SWITCHVIDEOMODE; break; @@ -1564,20 +1563,16 @@ static void acpi_video_bus_notify(struct acpi_device *device, u32 event) * connector. */ acpi_video_device_enumerate(video); acpi_video_device_rebind(video); - acpi_bus_generate_proc_event(device, event, 0); keycode = KEY_SWITCHVIDEOMODE; break; case ACPI_VIDEO_NOTIFY_CYCLE: /* Cycle Display output hotkey pressed. */ - acpi_bus_generate_proc_event(device, event, 0); keycode = KEY_SWITCHVIDEOMODE; break; case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: /* Next Display output hotkey pressed. */ - acpi_bus_generate_proc_event(device, event, 0); keycode = KEY_VIDEO_NEXT; break; case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: /* previous Display output hotkey pressed. */ - acpi_bus_generate_proc_event(device, event, 0); keycode = KEY_VIDEO_PREV; break; @@ -1620,31 +1615,26 @@ static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data) case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: /* Cycle brightness */ if (brightness_switch_enabled) acpi_video_switch_brightness(video_device, event); - acpi_bus_generate_proc_event(device, event, 0); keycode = KEY_BRIGHTNESS_CYCLE; break; case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: /* Increase brightness */ if (brightness_switch_enabled) acpi_video_switch_brightness(video_device, event); - acpi_bus_generate_proc_event(device, event, 0); keycode = KEY_BRIGHTNESSUP; break; case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: /* Decrease brightness */ if (brightness_switch_enabled) acpi_video_switch_brightness(video_device, event); - acpi_bus_generate_proc_event(device, event, 0); keycode = KEY_BRIGHTNESSDOWN; break; case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: /* zero brightness */ if (brightness_switch_enabled) acpi_video_switch_brightness(video_device, event); - acpi_bus_generate_proc_event(device, event, 0); keycode = KEY_BRIGHTNESS_ZERO; break; case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: /* display device off */ if (brightness_switch_enabled) acpi_video_switch_brightness(video_device, event); - acpi_bus_generate_proc_event(device, event, 0); keycode = KEY_DISPLAY_OFF; break; default: diff --git a/drivers/char/sonypi.c b/drivers/char/sonypi.c index bf2349dbbf7..7cc1fe2241f 100644 --- a/drivers/char/sonypi.c +++ b/drivers/char/sonypi.c @@ -876,11 +876,6 @@ found: if (useinput) sonypi_report_input_event(event); -#ifdef CONFIG_ACPI - if (sonypi_acpi_device) - acpi_bus_generate_proc_event(sonypi_acpi_device, 1, event); -#endif - kfifo_in_locked(&sonypi_device.fifo, (unsigned char *)&event, sizeof(event), &sonypi_device.fifo_lock); kill_fasync(&sonypi_device.fifo_async, SIGIO, POLL_IN); diff --git a/drivers/pci/hotplug/acpiphp_ibm.c b/drivers/pci/hotplug/acpiphp_ibm.c index c35e8ad6db0..5394fffdf16 100644 --- a/drivers/pci/hotplug/acpiphp_ibm.c +++ b/drivers/pci/hotplug/acpiphp_ibm.c @@ -270,7 +270,6 @@ static void ibm_handle_events(acpi_handle handle, u32 event, void *context) if (subevent == 0x80) { dbg("%s: generationg bus event\n", __func__); - acpi_bus_generate_proc_event(note->device, note->event, detail); acpi_bus_generate_netlink_event(note->device->pnp.device_class, dev_name(¬e->device->dev), note->event, detail); diff --git a/drivers/platform/x86/asus-laptop.c b/drivers/platform/x86/asus-laptop.c index 8e268da6fdb..0e9c169b42f 100644 --- a/drivers/platform/x86/asus-laptop.c +++ b/drivers/platform/x86/asus-laptop.c @@ -1543,7 +1543,6 @@ static void asus_acpi_notify(struct acpi_device *device, u32 event) /* TODO Find a better way to handle events count. */ count = asus->event_count[event % 128]++; - acpi_bus_generate_proc_event(asus->device, event, count); acpi_bus_generate_netlink_event(asus->device->pnp.device_class, dev_name(&asus->device->dev), event, count); diff --git a/drivers/platform/x86/eeepc-laptop.c b/drivers/platform/x86/eeepc-laptop.c index 5d26e70bed6..a6afd4108be 100644 --- a/drivers/platform/x86/eeepc-laptop.c +++ b/drivers/platform/x86/eeepc-laptop.c @@ -1269,7 +1269,6 @@ static void eeepc_acpi_notify(struct acpi_device *device, u32 event) if (event > ACPI_MAX_SYS_NOTIFY) return; count = eeepc->event_count[event % 128]++; - acpi_bus_generate_proc_event(device, event, count); acpi_bus_generate_netlink_event(device->pnp.device_class, dev_name(&device->dev), event, count); diff --git a/drivers/platform/x86/fujitsu-laptop.c b/drivers/platform/x86/fujitsu-laptop.c index 1c9386e7c58..52b8a97efde 100644 --- a/drivers/platform/x86/fujitsu-laptop.c +++ b/drivers/platform/x86/fujitsu-laptop.c @@ -773,8 +773,6 @@ static void acpi_fujitsu_notify(struct acpi_device *device, u32 event) else set_lcd_level(newb); } - acpi_bus_generate_proc_event(fujitsu->dev, - ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS, 0); keycode = KEY_BRIGHTNESSUP; } else if (oldb > newb) { if (disable_brightness_adjust != 1) { @@ -783,8 +781,6 @@ static void acpi_fujitsu_notify(struct acpi_device *device, u32 event) else set_lcd_level(newb); } - acpi_bus_generate_proc_event(fujitsu->dev, - ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS, 0); keycode = KEY_BRIGHTNESSDOWN; } break; diff --git a/drivers/platform/x86/panasonic-laptop.c b/drivers/platform/x86/panasonic-laptop.c index 4add9a31bf6..984253da365 100644 --- a/drivers/platform/x86/panasonic-laptop.c +++ b/drivers/platform/x86/panasonic-laptop.c @@ -464,9 +464,6 @@ static void acpi_pcc_generate_keyinput(struct pcc_acpi *pcc) "error getting hotkey status\n")); return; } - - acpi_bus_generate_proc_event(pcc->device, HKEY_NOTIFY, result); - if (!sparse_keymap_report_event(hotk_input_dev, result & 0xf, result & 0x80, false)) ACPI_DEBUG_PRINT((ACPI_DB_ERROR, diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c index 2ac045f27f1..069821b1fc2 100644 --- a/drivers/platform/x86/sony-laptop.c +++ b/drivers/platform/x86/sony-laptop.c @@ -1275,9 +1275,6 @@ static void sony_nc_notify(struct acpi_device *device, u32 event) ev_type = HOTKEY; sony_laptop_report_input_event(real_ev); } - - acpi_bus_generate_proc_event(sony_nc_acpi_device, ev_type, real_ev); - acpi_bus_generate_netlink_event(sony_nc_acpi_device->pnp.device_class, dev_name(&sony_nc_acpi_device->dev), ev_type, real_ev); } @@ -4243,7 +4240,6 @@ static irqreturn_t sony_pic_irq(int irq, void *dev_id) found: sony_laptop_report_input_event(device_event); - acpi_bus_generate_proc_event(dev->acpi_dev, 1, device_event); sonypi_compat_report_event(device_event); return IRQ_HANDLED; } diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c index 54d31c0a984..e946c0d58a9 100644 --- a/drivers/platform/x86/thinkpad_acpi.c +++ b/drivers/platform/x86/thinkpad_acpi.c @@ -2282,10 +2282,6 @@ static struct tp_acpi_drv_struct ibm_hotkey_acpidriver; static void tpacpi_hotkey_send_key(unsigned int scancode) { tpacpi_input_send_key_masked(scancode); - if (hotkey_report_mode < 2) { - acpi_bus_generate_proc_event(ibm_hotkey_acpidriver.device, - 0x80, TP_HKEY_EV_HOTKEY_BASE + scancode); - } } static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m) @@ -3737,13 +3733,6 @@ static void hotkey_notify(struct ibm_struct *ibm, u32 event) "event happened to %s\n", TPACPI_MAIL); } - /* Legacy events */ - if (!ignore_acpi_ev && - (send_acpi_ev || hotkey_report_mode < 2)) { - acpi_bus_generate_proc_event(ibm->acpi->device, - event, hkey); - } - /* netlink events */ if (!ignore_acpi_ev && send_acpi_ev) { acpi_bus_generate_netlink_event( diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index 56e6b68c8d2..2650d1f19e4 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -383,15 +383,6 @@ bool acpi_bus_can_wakeup(acpi_handle handle); static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; } #endif -#ifdef CONFIG_ACPI_PROC_EVENT -int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data); -int acpi_bus_generate_proc_event4(const char *class, const char *bid, u8 type, int data); -int acpi_bus_receive_event(struct acpi_bus_event *event); -#else -static inline int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data) - { return 0; } -#endif - void acpi_scan_lock_acquire(void); void acpi_scan_lock_release(void); int acpi_scan_add_handler(struct acpi_scan_handler *handler); -- cgit v1.2.3-70-g09d2 From 2c48e3eacb0998dc483860e63da47909313c314e Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Wed, 17 Jul 2013 09:48:50 +0800 Subject: ACPICA: Remove restriction of 256 maximum GPEs in any GPE block The FADT can support over 1000 GPEs, so remove any restriction on the GPE numbers. Signed-off-by: Bob Moore Signed-off-by: Lv Zheng Acked-by: Len Brown Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpica/evgpeinit.c | 11 ----------- include/acpi/actypes.h | 7 ------- 2 files changed, 18 deletions(-) (limited to 'include') diff --git a/drivers/acpi/acpica/evgpeinit.c b/drivers/acpi/acpica/evgpeinit.c index 9037f17c960..7842700346a 100644 --- a/drivers/acpi/acpica/evgpeinit.c +++ b/drivers/acpi/acpica/evgpeinit.c @@ -125,7 +125,6 @@ acpi_status acpi_ev_gpe_initialize(void) /* GPE block 0 exists (has both length and address > 0) */ register_count0 = (u16)(acpi_gbl_FADT.gpe0_block_length / 2); - gpe_number_max = (register_count0 * ACPI_GPE_REGISTER_WIDTH) - 1; @@ -204,16 +203,6 @@ acpi_status acpi_ev_gpe_initialize(void) goto cleanup; } - /* Check for Max GPE number out-of-range */ - - if (gpe_number_max > ACPI_GPE_MAX) { - ACPI_ERROR((AE_INFO, - "Maximum GPE number from FADT is too large: 0x%X", - gpe_number_max)); - status = AE_BAD_VALUE; - goto cleanup; - } - cleanup: (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); return_ACPI_STATUS(AE_OK); diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h index 22b03c9286e..787a977ece9 100644 --- a/include/acpi/actypes.h +++ b/include/acpi/actypes.h @@ -668,13 +668,6 @@ typedef u32 acpi_event_status; #define ACPI_EVENT_FLAG_SET (acpi_event_status) 0x04 #define ACPI_EVENT_FLAG_HANDLE (acpi_event_status) 0x08 -/* - * General Purpose Events (GPE) - */ -#define ACPI_GPE_INVALID 0xFF -#define ACPI_GPE_MAX 0xFF -#define ACPI_NUM_GPE 256 - /* Actions for acpi_set_gpe, acpi_gpe_wakeup, acpi_hw_low_set_gpe */ #define ACPI_GPE_ENABLE 0 -- cgit v1.2.3-70-g09d2 From 53b1631e3a274f84686853fa2531d1aa918ee36c Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Wed, 17 Jul 2013 09:49:08 +0800 Subject: ACPICA: Update version to 20130626 Version 20130626. Signed-off-by: Bob Moore Signed-off-by: Lv Zheng Acked-by: Len Brown Signed-off-by: Rafael J. Wysocki --- include/acpi/acpixf.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h index 22d497ee6ef..292af0c0b89 100644 --- a/include/acpi/acpixf.h +++ b/include/acpi/acpixf.h @@ -46,7 +46,7 @@ /* Current ACPICA subsystem version in YYYYMMDD format */ -#define ACPI_CA_VERSION 0x20130517 +#define ACPI_CA_VERSION 0x20130626 #include #include -- cgit v1.2.3-70-g09d2 From be1c9de98d8904c75a5ab8b2a0d97bea0f7c07cc Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Sat, 13 Jul 2013 23:27:23 +0200 Subject: ACPI / PCI: Make bus registration and unregistration symmetric Since acpi_pci_slot_enumerate() and acpiphp_enumerate_slots() can get the ACPI device handle they need from bus->bridge, it is not necessary to pass that handle to them as an argument. Drop the second argument of acpi_pci_slot_enumerate() and acpiphp_enumerate_slots(), rework them to obtain the ACPI handle from bus->bridge and make acpi_pci_add_bus() and acpi_pci_remove_bus() entirely symmetrical. Tested-by: Mika Westerberg Signed-off-by: Rafael J. Wysocki Acked-by: Yinghai Lu --- drivers/acpi/pci_slot.c | 14 +++++++++----- drivers/pci/hotplug/acpiphp_glue.c | 6 ++++-- drivers/pci/pci-acpi.c | 16 ++++------------ include/linux/pci-acpi.h | 10 ++++------ 4 files changed, 21 insertions(+), 25 deletions(-) (limited to 'include') diff --git a/drivers/acpi/pci_slot.c b/drivers/acpi/pci_slot.c index 033d1179bdb..d678a180ca2 100644 --- a/drivers/acpi/pci_slot.c +++ b/drivers/acpi/pci_slot.c @@ -159,12 +159,16 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv) return AE_OK; } -void acpi_pci_slot_enumerate(struct pci_bus *bus, acpi_handle handle) +void acpi_pci_slot_enumerate(struct pci_bus *bus) { - mutex_lock(&slot_list_lock); - acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, 1, - register_slot, NULL, bus, NULL); - mutex_unlock(&slot_list_lock); + acpi_handle handle = ACPI_HANDLE(bus->bridge); + + if (handle) { + mutex_lock(&slot_list_lock); + acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, 1, + register_slot, NULL, bus, NULL); + mutex_unlock(&slot_list_lock); + } } void acpi_pci_slot_remove(struct pci_bus *bus) diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index 8bfad0dc29a..a203ba529fe 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -1147,14 +1147,16 @@ static void handle_hotplug_event_func(acpi_handle handle, u32 type, * Create hotplug slots for the PCI bus. * It should always return 0 to avoid skipping following notifiers. */ -void acpiphp_enumerate_slots(struct pci_bus *bus, acpi_handle handle) +void acpiphp_enumerate_slots(struct pci_bus *bus) { + acpi_handle handle; struct acpiphp_bridge *bridge; if (acpiphp_disabled) return; - if (detect_ejectable_slots(handle) <= 0) + handle = ACPI_HANDLE(bus->bridge); + if (!handle || detect_ejectable_slots(handle) <= 0) return; bridge = kzalloc(sizeof(struct acpiphp_bridge), GFP_KERNEL); diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c index dbdc5f7e2b2..c78cc432eda 100644 --- a/drivers/pci/pci-acpi.c +++ b/drivers/pci/pci-acpi.c @@ -290,24 +290,16 @@ static struct pci_platform_pm_ops acpi_pci_platform_pm = { void acpi_pci_add_bus(struct pci_bus *bus) { - acpi_handle handle = NULL; - - if (bus->bridge) - handle = ACPI_HANDLE(bus->bridge); - if (acpi_pci_disabled || handle == NULL) + if (acpi_pci_disabled || !bus->bridge) return; - acpi_pci_slot_enumerate(bus, handle); - acpiphp_enumerate_slots(bus, handle); + acpi_pci_slot_enumerate(bus); + acpiphp_enumerate_slots(bus); } void acpi_pci_remove_bus(struct pci_bus *bus) { - /* - * bus->bridge->acpi_node.handle has already been reset to NULL - * when acpi_pci_remove_bus() is called, so don't check ACPI handle. - */ - if (acpi_pci_disabled) + if (acpi_pci_disabled || !bus->bridge) return; acpiphp_remove_slots(bus); diff --git a/include/linux/pci-acpi.h b/include/linux/pci-acpi.h index 17044797727..d006f0ca60f 100644 --- a/include/linux/pci-acpi.h +++ b/include/linux/pci-acpi.h @@ -47,24 +47,22 @@ void acpi_pci_remove_bus(struct pci_bus *bus); #ifdef CONFIG_ACPI_PCI_SLOT void acpi_pci_slot_init(void); -void acpi_pci_slot_enumerate(struct pci_bus *bus, acpi_handle handle); +void acpi_pci_slot_enumerate(struct pci_bus *bus); void acpi_pci_slot_remove(struct pci_bus *bus); #else static inline void acpi_pci_slot_init(void) { } -static inline void acpi_pci_slot_enumerate(struct pci_bus *bus, - acpi_handle handle) { } +static inline void acpi_pci_slot_enumerate(struct pci_bus *bus) { } static inline void acpi_pci_slot_remove(struct pci_bus *bus) { } #endif #ifdef CONFIG_HOTPLUG_PCI_ACPI void acpiphp_init(void); -void acpiphp_enumerate_slots(struct pci_bus *bus, acpi_handle handle); +void acpiphp_enumerate_slots(struct pci_bus *bus); void acpiphp_remove_slots(struct pci_bus *bus); void acpiphp_check_host_bridge(acpi_handle handle); #else static inline void acpiphp_init(void) { } -static inline void acpiphp_enumerate_slots(struct pci_bus *bus, - acpi_handle handle) { } +static inline void acpiphp_enumerate_slots(struct pci_bus *bus) { } static inline void acpiphp_remove_slots(struct pci_bus *bus) { } static inline void acpiphp_check_host_bridge(acpi_handle handle) { } #endif -- cgit v1.2.3-70-g09d2 From 2cf9f5bcc8d8cb31d6ea7baebac5056f39fb4f40 Mon Sep 17 00:00:00 2001 From: Lv Zheng Date: Mon, 22 Jul 2013 16:08:16 +0800 Subject: ACPICA: Add acpi_update_interfaces() public interface Add new API to allow OSPM to disable/enable specific types of _OSI interface strings. ACPICA does not have the knowledge about whether an _OSI interface string is an OS vendor string or a feature group string and there isn't any API interface to allow OSPM to install a new interface string as a feature group string. This patch simply adds all feature group strings defined by ACPI specification into the acpi_default_supported_interfaces with ACPI_OSI_FEATURE flag set to fix this gap. This patch also adds codes to keep their default states as ACPI_OSI_INVALID before the initialization and after the termination. Signed-off-by: Lv Zheng Reviewed-by: Zhang Rui Signed-off-by: Bob Moore Acked-by: Len Brown Signed-off-by: Rafael J. Wysocki Conflicts: include/acpi/actypes.h (with commit 242b228) --- drivers/acpi/acpica/aclocal.h | 3 ++ drivers/acpi/acpica/acutils.h | 2 ++ drivers/acpi/acpica/utosi.c | 77 +++++++++++++++++++++++++++++++++++-------- drivers/acpi/acpica/utxface.c | 29 ++++++++++++++++ include/acpi/acpixf.h | 2 ++ include/acpi/actypes.h | 14 ++++++++ 6 files changed, 114 insertions(+), 13 deletions(-) (limited to 'include') diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h index d4a4901637c..b0e3d15cfe9 100644 --- a/drivers/acpi/acpica/aclocal.h +++ b/drivers/acpi/acpica/aclocal.h @@ -942,6 +942,9 @@ struct acpi_interface_info { #define ACPI_OSI_INVALID 0x01 #define ACPI_OSI_DYNAMIC 0x02 +#define ACPI_OSI_FEATURE 0x04 +#define ACPI_OSI_DEFAULT_INVALID 0x08 +#define ACPI_OSI_OPTIONAL_FEATURE (ACPI_OSI_FEATURE | ACPI_OSI_DEFAULT_INVALID | ACPI_OSI_INVALID) struct acpi_port_info { char *name; diff --git a/drivers/acpi/acpica/acutils.h b/drivers/acpi/acpica/acutils.h index 4c081c43608..d5a62a6182b 100644 --- a/drivers/acpi/acpica/acutils.h +++ b/drivers/acpi/acpica/acutils.h @@ -470,6 +470,8 @@ acpi_status acpi_ut_install_interface(acpi_string interface_name); acpi_status acpi_ut_remove_interface(acpi_string interface_name); +acpi_status acpi_ut_update_interfaces(u8 action); + struct acpi_interface_info *acpi_ut_get_interface(acpi_string interface_name); acpi_status acpi_ut_osi_implementation(struct acpi_walk_state *walk_state); diff --git a/drivers/acpi/acpica/utosi.c b/drivers/acpi/acpica/utosi.c index 7e807725c63..8856bd37bc7 100644 --- a/drivers/acpi/acpica/utosi.c +++ b/drivers/acpi/acpica/utosi.c @@ -77,21 +77,20 @@ static struct acpi_interface_info acpi_default_supported_interfaces[] = { /* Feature Group Strings */ - {"Extended Address Space Descriptor", NULL, 0, 0} + {"Extended Address Space Descriptor", NULL, ACPI_OSI_FEATURE, 0}, /* * All "optional" feature group strings (features that are implemented - * by the host) should be dynamically added by the host via - * acpi_install_interface and should not be manually added here. - * - * Examples of optional feature group strings: - * - * "Module Device" - * "Processor Device" - * "3.0 Thermal Model" - * "3.0 _SCP Extensions" - * "Processor Aggregator Device" + * by the host) should be dynamically modified to VALID by the host via + * acpi_install_interface or acpi_update_interfaces. Such optional feature + * group strings are set as INVALID by default here. */ + + {"Module Device", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0}, + {"Processor Device", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0}, + {"3.0 Thermal Model", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0}, + {"3.0 _SCP Extensions", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0}, + {"Processor Aggregator Device", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0} }; /******************************************************************************* @@ -158,11 +157,20 @@ acpi_status acpi_ut_interface_terminate(void) while (next_interface) { acpi_gbl_supported_interfaces = next_interface->next; - /* Only interfaces added at runtime can be freed */ - if (next_interface->flags & ACPI_OSI_DYNAMIC) { + + /* Only interfaces added at runtime can be freed */ + ACPI_FREE(next_interface->name); ACPI_FREE(next_interface); + } else { + /* Interface is in static list. Reset it to invalid or valid. */ + + if (next_interface->flags & ACPI_OSI_DEFAULT_INVALID) { + next_interface->flags |= ACPI_OSI_INVALID; + } else { + next_interface->flags &= ~ACPI_OSI_INVALID; + } } next_interface = acpi_gbl_supported_interfaces; @@ -276,6 +284,49 @@ acpi_status acpi_ut_remove_interface(acpi_string interface_name) return (AE_NOT_EXIST); } +/******************************************************************************* + * + * FUNCTION: acpi_ut_update_interfaces + * + * PARAMETERS: action - Actions to be performed during the + * update + * + * RETURN: Status + * + * DESCRIPTION: Update _OSI interface strings, disabling or enabling OS vendor + * strings or/and feature group strings. + * Caller MUST hold acpi_gbl_osi_mutex + * + ******************************************************************************/ + +acpi_status acpi_ut_update_interfaces(u8 action) +{ + struct acpi_interface_info *next_interface; + + next_interface = acpi_gbl_supported_interfaces; + while (next_interface) { + if (((next_interface->flags & ACPI_OSI_FEATURE) && + (action & ACPI_FEATURE_STRINGS)) || + (!(next_interface->flags & ACPI_OSI_FEATURE) && + (action & ACPI_VENDOR_STRINGS))) { + if (action & ACPI_DISABLE_INTERFACES) { + + /* Mark the interfaces as invalid */ + + next_interface->flags |= ACPI_OSI_INVALID; + } else { + /* Mark the interfaces as valid */ + + next_interface->flags &= ~ACPI_OSI_INVALID; + } + } + + next_interface = next_interface->next; + } + + return (AE_OK); +} + /******************************************************************************* * * FUNCTION: acpi_ut_get_interface diff --git a/drivers/acpi/acpica/utxface.c b/drivers/acpi/acpica/utxface.c index 6505774f223..03a211e6e26 100644 --- a/drivers/acpi/acpica/utxface.c +++ b/drivers/acpi/acpica/utxface.c @@ -387,6 +387,34 @@ acpi_status acpi_install_interface_handler(acpi_interface_handler handler) ACPI_EXPORT_SYMBOL(acpi_install_interface_handler) +/***************************************************************************** + * + * FUNCTION: acpi_update_interfaces + * + * PARAMETERS: action - Actions to be performed during the + * update + * + * RETURN: Status + * + * DESCRIPTION: Update _OSI interface strings, disabling or enabling OS vendor + * string or/and feature group strings. + * + ****************************************************************************/ +acpi_status acpi_update_interfaces(u8 action) +{ + acpi_status status; + + status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER); + if (ACPI_FAILURE(status)) { + return (status); + } + + status = acpi_ut_update_interfaces(action); + + acpi_os_release_mutex(acpi_gbl_osi_mutex); + return (status); +} + /***************************************************************************** * * FUNCTION: acpi_check_address_range @@ -402,6 +430,7 @@ ACPI_EXPORT_SYMBOL(acpi_install_interface_handler) * ASL operation region address ranges. * ****************************************************************************/ + u32 acpi_check_address_range(acpi_adr_space_type space_id, acpi_physical_address address, diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h index 292af0c0b89..0dd03f226a6 100644 --- a/include/acpi/acpixf.h +++ b/include/acpi/acpixf.h @@ -147,6 +147,8 @@ acpi_status acpi_install_interface(acpi_string interface_name); acpi_status acpi_remove_interface(acpi_string interface_name); +acpi_status acpi_update_interfaces(u8 action); + u32 acpi_check_address_range(acpi_adr_space_type space_id, acpi_physical_address address, diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h index 787a977ece9..eae55fb7490 100644 --- a/include/acpi/actypes.h +++ b/include/acpi/actypes.h @@ -1152,4 +1152,18 @@ struct acpi_memory_list { #define ACPI_OSI_WIN_7 0x0B #define ACPI_OSI_WIN_8 0x0C +/* _OSI update actions */ + +#define ACPI_VENDOR_STRINGS 0x01 +#define ACPI_FEATURE_STRINGS 0x02 +#define ACPI_ENABLE_INTERFACES 0x00 +#define ACPI_DISABLE_INTERFACES 0x04 + +#define ACPI_DISABLE_ALL_VENDOR_STRINGS (ACPI_DISABLE_INTERFACES | ACPI_VENDOR_STRINGS) +#define ACPI_DISABLE_ALL_FEATURE_STRINGS (ACPI_DISABLE_INTERFACES | ACPI_FEATURE_STRINGS) +#define ACPI_DISABLE_ALL_STRINGS (ACPI_DISABLE_INTERFACES | ACPI_VENDOR_STRINGS | ACPI_FEATURE_STRINGS) +#define ACPI_ENABLE_ALL_VENDOR_STRINGS (ACPI_ENABLE_INTERFACES | ACPI_VENDOR_STRINGS) +#define ACPI_ENABLE_ALL_FEATURE_STRINGS (ACPI_ENABLE_INTERFACES | ACPI_FEATURE_STRINGS) +#define ACPI_ENABLE_ALL_STRINGS (ACPI_ENABLE_INTERFACES | ACPI_VENDOR_STRINGS | ACPI_FEATURE_STRINGS) + #endif /* __ACTYPES_H__ */ -- cgit v1.2.3-70-g09d2 From cffe4e0e7413eb29fb8bd035c8b12b33a4b8522a Mon Sep 17 00:00:00 2001 From: Stratos Karafotis Date: Wed, 5 Jun 2013 19:01:50 +0300 Subject: cpufreq: Remove unused function __cpufreq_driver_getavg() The target frequency calculation method in the ondemand governor has changed and it is now independent of the measured average frequency. Consequently, the __cpufreq_driver_getavg() function and getavg member of struct cpufreq_driver are not used any more, so drop them. [rjw: Changelog] Signed-off-by: Stratos Karafotis Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/cpufreq.c | 12 ------------ include/linux/cpufreq.h | 6 ------ 2 files changed, 18 deletions(-) (limited to 'include') diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index a4ad7339588..9a9d8ee9fae 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -1593,18 +1593,6 @@ fail: } EXPORT_SYMBOL_GPL(cpufreq_driver_target); -int __cpufreq_driver_getavg(struct cpufreq_policy *policy, unsigned int cpu) -{ - if (cpufreq_disabled()) - return 0; - - if (!cpufreq_driver->getavg) - return 0; - - return cpufreq_driver->getavg(policy, cpu); -} -EXPORT_SYMBOL_GPL(__cpufreq_driver_getavg); - /* * when "event" is CPUFREQ_GOV_LIMITS */ diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 90d5a15120d..e1fd215e16c 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -216,10 +216,6 @@ extern int cpufreq_driver_target(struct cpufreq_policy *policy, extern int __cpufreq_driver_target(struct cpufreq_policy *policy, unsigned int target_freq, unsigned int relation); - -extern int __cpufreq_driver_getavg(struct cpufreq_policy *policy, - unsigned int cpu); - int cpufreq_register_governor(struct cpufreq_governor *governor); void cpufreq_unregister_governor(struct cpufreq_governor *governor); @@ -258,8 +254,6 @@ struct cpufreq_driver { unsigned int (*get) (unsigned int cpu); /* optional */ - unsigned int (*getavg) (struct cpufreq_policy *policy, - unsigned int cpu); int (*bios_limit) (int cpu, unsigned int *limit); int (*exit) (struct cpufreq_policy *policy); -- cgit v1.2.3-70-g09d2 From 536446772f1181f3afdf332780b5325d1b6980c6 Mon Sep 17 00:00:00 2001 From: Shuah Khan Date: Fri, 26 Jul 2013 13:30:20 -0600 Subject: PM / Sleep: new trace event to print device suspend and resume times A new trace event is added to PM events to print the time it takes to suspend and resume a device. It generates trace messages that include device, driver, parent information in addition to the type of PM ops invoked as well as the PM event and error status from the PM ops. Example trace below: bash-2239 [000] .... 290.883035: device_pm_report_time: backlight acpi_video0 parent=0000:00:02.0 state=freeze ops=class nsecs=332 err=0 bash-2239 [000] .... 290.883041: device_pm_report_time: rfkill rf kill3 parent=phy0 state=freeze ops=legacy class nsecs=216 err=0 bash-2239 [001] .... 290.973892: device_pm_report_time: ieee80211 phy0 parent=0000:01:00.0 state=freeze ops=legacy class nsecs=90846477 err=0 bash-2239 [001] .... 293.660129: device_pm_report_time: ieee80211 phy0 parent=0000:01:00.0 state=restore ops=legacy class nsecs=101295162 err=0 bash-2239 [001] .... 293.660147: device_pm_report_time: rfkill rfkill3 parent=phy0 state=restore ops=legacy class nsecs=1804 err=0 bash-2239 [001] .... 293.660157: device_pm_report_time: backlight acpi_video0 parent=0000:00:02.0 state=restore ops=class nsecs=757 err=0 Signed-off-by: Shuah Khan Signed-off-by: Rafael J. Wysocki --- drivers/base/power/main.c | 77 +++++++++++++++++++++++++------------------- include/trace/events/power.h | 37 +++++++++++++++++++++ 2 files changed, 80 insertions(+), 34 deletions(-) (limited to 'include') diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c index 5a9b6569dd7..9f098a82cf0 100644 --- a/drivers/base/power/main.c +++ b/drivers/base/power/main.c @@ -28,6 +28,7 @@ #include #include #include +#include #include #include "../base.h" #include "power.h" @@ -56,6 +57,30 @@ static pm_message_t pm_transition; static int async_error; +static char *pm_verb(int event) +{ + switch (event) { + case PM_EVENT_SUSPEND: + return "suspend"; + case PM_EVENT_RESUME: + return "resume"; + case PM_EVENT_FREEZE: + return "freeze"; + case PM_EVENT_QUIESCE: + return "quiesce"; + case PM_EVENT_HIBERNATE: + return "hibernate"; + case PM_EVENT_THAW: + return "thaw"; + case PM_EVENT_RESTORE: + return "restore"; + case PM_EVENT_RECOVER: + return "recover"; + default: + return "(unknown PM event)"; + } +} + /** * device_pm_sleep_init - Initialize system suspend-related device fields. * @dev: Device object being initialized. @@ -172,16 +197,21 @@ static ktime_t initcall_debug_start(struct device *dev) } static void initcall_debug_report(struct device *dev, ktime_t calltime, - int error) + int error, pm_message_t state, char *info) { - ktime_t delta, rettime; + ktime_t rettime; + s64 nsecs; + + rettime = ktime_get(); + nsecs = (s64) ktime_to_ns(ktime_sub(rettime, calltime)); if (pm_print_times_enabled) { - rettime = ktime_get(); - delta = ktime_sub(rettime, calltime); pr_info("call %s+ returned %d after %Ld usecs\n", dev_name(dev), - error, (unsigned long long)ktime_to_ns(delta) >> 10); + error, (unsigned long long)nsecs >> 10); } + + trace_device_pm_report_time(dev, info, nsecs, pm_verb(state.event), + error); } /** @@ -309,30 +339,6 @@ static pm_callback_t pm_noirq_op(const struct dev_pm_ops *ops, pm_message_t stat return NULL; } -static char *pm_verb(int event) -{ - switch (event) { - case PM_EVENT_SUSPEND: - return "suspend"; - case PM_EVENT_RESUME: - return "resume"; - case PM_EVENT_FREEZE: - return "freeze"; - case PM_EVENT_QUIESCE: - return "quiesce"; - case PM_EVENT_HIBERNATE: - return "hibernate"; - case PM_EVENT_THAW: - return "thaw"; - case PM_EVENT_RESTORE: - return "restore"; - case PM_EVENT_RECOVER: - return "recover"; - default: - return "(unknown PM event)"; - } -} - static void pm_dev_dbg(struct device *dev, pm_message_t state, char *info) { dev_dbg(dev, "%s%s%s\n", info, pm_verb(state.event), @@ -379,7 +385,7 @@ static int dpm_run_callback(pm_callback_t cb, struct device *dev, error = cb(dev); suspend_report_result(cb, error); - initcall_debug_report(dev, calltime, error); + initcall_debug_report(dev, calltime, error, state, info); return error; } @@ -1027,7 +1033,8 @@ EXPORT_SYMBOL_GPL(dpm_suspend_end); * @cb: Suspend callback to execute. */ static int legacy_suspend(struct device *dev, pm_message_t state, - int (*cb)(struct device *dev, pm_message_t state)) + int (*cb)(struct device *dev, pm_message_t state), + char *info) { int error; ktime_t calltime; @@ -1037,7 +1044,7 @@ static int legacy_suspend(struct device *dev, pm_message_t state, error = cb(dev, state); suspend_report_result(cb, error); - initcall_debug_report(dev, calltime, error); + initcall_debug_report(dev, calltime, error, state, info); return error; } @@ -1097,7 +1104,8 @@ static int __device_suspend(struct device *dev, pm_message_t state, bool async) goto Run; } else if (dev->class->suspend) { pm_dev_dbg(dev, state, "legacy class "); - error = legacy_suspend(dev, state, dev->class->suspend); + error = legacy_suspend(dev, state, dev->class->suspend, + "legacy class "); goto End; } } @@ -1108,7 +1116,8 @@ static int __device_suspend(struct device *dev, pm_message_t state, bool async) callback = pm_op(dev->bus->pm, state); } else if (dev->bus->suspend) { pm_dev_dbg(dev, state, "legacy bus "); - error = legacy_suspend(dev, state, dev->bus->suspend); + error = legacy_suspend(dev, state, dev->bus->suspend, + "legacy bus "); goto End; } } diff --git a/include/trace/events/power.h b/include/trace/events/power.h index 8e42410bd15..cda100d6762 100644 --- a/include/trace/events/power.h +++ b/include/trace/events/power.h @@ -66,6 +66,43 @@ TRACE_EVENT(machine_suspend, TP_printk("state=%lu", (unsigned long)__entry->state) ); +TRACE_EVENT(device_pm_report_time, + + TP_PROTO(struct device *dev, const char *pm_ops, s64 ops_time, + char *pm_event_str, int error), + + TP_ARGS(dev, pm_ops, ops_time, pm_event_str, error), + + TP_STRUCT__entry( + __string(device, dev_name(dev)) + __string(driver, dev_driver_string(dev)) + __string(parent, dev->parent ? dev_name(dev->parent) : "none") + __string(pm_ops, pm_ops ? pm_ops : "none ") + __string(pm_event_str, pm_event_str) + __field(s64, ops_time) + __field(int, error) + ), + + TP_fast_assign( + const char *tmp = dev->parent ? dev_name(dev->parent) : "none"; + const char *tmp_i = pm_ops ? pm_ops : "none "; + + __assign_str(device, dev_name(dev)); + __assign_str(driver, dev_driver_string(dev)); + __assign_str(parent, tmp); + __assign_str(pm_ops, tmp_i); + __assign_str(pm_event_str, pm_event_str); + __entry->ops_time = ops_time; + __entry->error = error; + ), + + /* ops_str has an extra space at the end */ + TP_printk("%s %s parent=%s state=%s ops=%snsecs=%lld err=%d", + __get_str(driver), __get_str(device), __get_str(parent), + __get_str(pm_event_str), __get_str(pm_ops), + __entry->ops_time, __entry->error) +); + DECLARE_EVENT_CLASS(wakeup_source, TP_PROTO(const char *name, unsigned int state), -- cgit v1.2.3-70-g09d2 From 8ad928d52e63a9b7d69f0873d7318c4561e2f8cd Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 30 Jul 2013 14:36:20 +0200 Subject: ACPI / PM: Use ACPI_STATE_D3_COLD instead of ACPI_STATE_D3 everywhere There are several places in the tree where ACPI_STATE_D3 is used instead of ACPI_STATE_D3_COLD which should be used instead for clarity. Modify them all to use ACPI_STATE_D3_COLD as appropriate. [The definition of ACPI_STATE_D3 itself cannot go away at this point as it is part of ACPICA.] Signed-off-by: Rafael J. Wysocki Reviewed-by: Aaron Lu --- drivers/acpi/fan.c | 4 ++-- drivers/acpi/power.c | 2 +- drivers/acpi/scan.c | 4 ++-- drivers/ata/libata-acpi.c | 4 ++-- drivers/ide/ide-acpi.c | 5 +++-- drivers/pnp/pnpacpi/core.c | 6 +++--- include/acpi/acpi_bus.h | 3 ++- 7 files changed, 15 insertions(+), 13 deletions(-) (limited to 'include') diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c index 5b02a0aa540..41ade6570bc 100644 --- a/drivers/acpi/fan.c +++ b/drivers/acpi/fan.c @@ -93,7 +93,7 @@ static int fan_get_cur_state(struct thermal_cooling_device *cdev, unsigned long if (result) return result; - *state = (acpi_state == ACPI_STATE_D3 ? 0 : + *state = (acpi_state == ACPI_STATE_D3_COLD ? 0 : (acpi_state == ACPI_STATE_D0 ? 1 : -1)); return 0; } @@ -108,7 +108,7 @@ fan_set_cur_state(struct thermal_cooling_device *cdev, unsigned long state) return -EINVAL; result = acpi_bus_set_power(device->handle, - state ? ACPI_STATE_D0 : ACPI_STATE_D3); + state ? ACPI_STATE_D0 : ACPI_STATE_D3_COLD); return result; } diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c index 5c28c894c0f..4cdcc0cf0c5 100644 --- a/drivers/acpi/power.c +++ b/drivers/acpi/power.c @@ -786,7 +786,7 @@ int acpi_power_get_inferred_state(struct acpi_device *device, int *state) } } - *state = ACPI_STATE_D3; + *state = ACPI_STATE_D3_COLD; return 0; } diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 8a46c924eff..c30df3ad2d7 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -1450,8 +1450,8 @@ static void acpi_bus_get_power_flags(struct acpi_device *device) /* Set defaults for D0 and D3 states (always valid) */ device->power.states[ACPI_STATE_D0].flags.valid = 1; device->power.states[ACPI_STATE_D0].power = 100; - device->power.states[ACPI_STATE_D3].flags.valid = 1; - device->power.states[ACPI_STATE_D3].power = 0; + device->power.states[ACPI_STATE_D3_COLD].flags.valid = 1; + device->power.states[ACPI_STATE_D3_COLD].power = 0; /* Set D3cold's explicit_set flag if _PS3 exists. */ if (device->power.states[ACPI_STATE_D3_HOT].flags.explicit_set) diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c index cf4e7020ada..da8170dfc90 100644 --- a/drivers/ata/libata-acpi.c +++ b/drivers/ata/libata-acpi.c @@ -947,11 +947,11 @@ static void pata_acpi_set_state(struct ata_port *ap, pm_message_t state) continue; acpi_bus_set_power(dev_handle, state.event & PM_EVENT_RESUME ? - ACPI_STATE_D0 : ACPI_STATE_D3); + ACPI_STATE_D0 : ACPI_STATE_D3_COLD); } if (!(state.event & PM_EVENT_RESUME)) - acpi_bus_set_power(port_handle, ACPI_STATE_D3); + acpi_bus_set_power(port_handle, ACPI_STATE_D3_COLD); } /** diff --git a/drivers/ide/ide-acpi.c b/drivers/ide/ide-acpi.c index f1a6796b165..140c8ef5052 100644 --- a/drivers/ide/ide-acpi.c +++ b/drivers/ide/ide-acpi.c @@ -520,11 +520,12 @@ void ide_acpi_set_state(ide_hwif_t *hwif, int on) ide_port_for_each_present_dev(i, drive, hwif) { if (drive->acpidata->obj_handle) acpi_bus_set_power(drive->acpidata->obj_handle, - on ? ACPI_STATE_D0 : ACPI_STATE_D3); + on ? ACPI_STATE_D0 : ACPI_STATE_D3_COLD); } if (!on) - acpi_bus_set_power(hwif->acpidata->obj_handle, ACPI_STATE_D3); + acpi_bus_set_power(hwif->acpidata->obj_handle, + ACPI_STATE_D3_COLD); } /** diff --git a/drivers/pnp/pnpacpi/core.c b/drivers/pnp/pnpacpi/core.c index 55cd459a390..34049b0b4c7 100644 --- a/drivers/pnp/pnpacpi/core.c +++ b/drivers/pnp/pnpacpi/core.c @@ -131,7 +131,7 @@ static int pnpacpi_disable_resources(struct pnp_dev *dev) /* acpi_unregister_gsi(pnp_irq(dev, 0)); */ ret = 0; if (acpi_bus_power_manageable(handle)) - acpi_bus_set_power(handle, ACPI_STATE_D3); + acpi_bus_set_power(handle, ACPI_STATE_D3_COLD); /* continue even if acpi_bus_set_power() fails */ if (ACPI_FAILURE(acpi_evaluate_object(handle, "_DIS", NULL, NULL))) ret = -ENODEV; @@ -174,10 +174,10 @@ static int pnpacpi_suspend(struct pnp_dev *dev, pm_message_t state) if (acpi_bus_power_manageable(handle)) { int power_state = acpi_pm_device_sleep_state(&dev->dev, NULL, - ACPI_STATE_D3); + ACPI_STATE_D3_COLD); if (power_state < 0) power_state = (state.event == PM_EVENT_ON) ? - ACPI_STATE_D0 : ACPI_STATE_D3; + ACPI_STATE_D0 : ACPI_STATE_D3_COLD; /* * acpi_bus_set_power() often fails (keyboard port can't be diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index 56e6b68c8d2..916b1893387 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -478,7 +478,8 @@ static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m) if (p) *p = ACPI_STATE_D0; - return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3) ? m : ACPI_STATE_D0; + return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3_COLD) ? + m : ACPI_STATE_D0; } static inline void acpi_dev_pm_add_dependent(acpi_handle handle, struct device *depdev) {} -- cgit v1.2.3-70-g09d2 From d6b47b122473885abc882e337ac2d321bbcfb378 Mon Sep 17 00:00:00 2001 From: Ben Guthro Date: Tue, 30 Jul 2013 08:24:52 -0400 Subject: ACPI / sleep: Introduce acpi_os_prepare_extended_sleep() for extended sleep path Like acpi_os_prepare_sleep(), register a callback for use in systems like tboot, and xen, which have system specific requirements outside of ACPICA. This mirrors the functionality in acpi_os_prepare_sleep(), called from acpi_hw_sleep() Signed-off-by: Ben Guthro Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpica/hwesleep.c | 9 +++++++++ drivers/acpi/osl.c | 24 ++++++++++++++++++++++++ include/linux/acpi.h | 7 +++++++ 3 files changed, 40 insertions(+) (limited to 'include') diff --git a/drivers/acpi/acpica/hwesleep.c b/drivers/acpi/acpica/hwesleep.c index 5e5f76230f5..414076818d4 100644 --- a/drivers/acpi/acpica/hwesleep.c +++ b/drivers/acpi/acpica/hwesleep.c @@ -43,6 +43,7 @@ */ #include +#include #include "accommon.h" #define _COMPONENT ACPI_HARDWARE @@ -128,6 +129,14 @@ acpi_status acpi_hw_extended_sleep(u8 sleep_state) ACPI_FLUSH_CPU_CACHE(); + status = acpi_os_prepare_extended_sleep(sleep_state, + acpi_gbl_sleep_type_a, + acpi_gbl_sleep_type_b); + if (ACPI_SKIP(status)) + return_ACPI_STATUS(AE_OK); + if (ACPI_FAILURE(status)) + return_ACPI_STATUS(status); + /* * Set the SLP_TYP and SLP_EN bits. * diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c index 6ab2c350552..a934950ff7a 100644 --- a/drivers/acpi/osl.c +++ b/drivers/acpi/osl.c @@ -79,6 +79,8 @@ extern char line_buf[80]; static int (*__acpi_os_prepare_sleep)(u8 sleep_state, u32 pm1a_ctrl, u32 pm1b_ctrl); +static int (*__acpi_os_prepare_extended_sleep)(u8 sleep_state, u32 val_a, + u32 val_b); static acpi_osd_handler acpi_irq_handler; static void *acpi_irq_context; @@ -1779,6 +1781,28 @@ void acpi_os_set_prepare_sleep(int (*func)(u8 sleep_state, __acpi_os_prepare_sleep = func; } +acpi_status acpi_os_prepare_extended_sleep(u8 sleep_state, u32 val_a, + u32 val_b) +{ + int rc = 0; + if (__acpi_os_prepare_extended_sleep) + rc = __acpi_os_prepare_extended_sleep(sleep_state, + val_a, val_b); + if (rc < 0) + return AE_ERROR; + else if (rc > 0) + return AE_CTRL_SKIP; + + return AE_OK; +} + +void acpi_os_set_prepare_extended_sleep(int (*func)(u8 sleep_state, + u32 val_a, u32 val_b)) +{ + __acpi_os_prepare_extended_sleep = func; +} + + void alloc_acpi_hp_work(acpi_handle handle, u32 type, void *context, void (*func)(struct work_struct *work)) { diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 353ba256f36..a5db4aeefa3 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -481,6 +481,13 @@ void acpi_os_set_prepare_sleep(int (*func)(u8 sleep_state, acpi_status acpi_os_prepare_sleep(u8 sleep_state, u32 pm1a_control, u32 pm1b_control); + +void acpi_os_set_prepare_extended_sleep(int (*func)(u8 sleep_state, + u32 val_a, u32 val_b)); + +acpi_status acpi_os_prepare_extended_sleep(u8 sleep_state, + u32 val_a, u32 val_b); + #ifdef CONFIG_X86 void arch_reserve_mem_area(acpi_physical_address addr, size_t size); #else -- cgit v1.2.3-70-g09d2 From be6b25d15f5e67bc49b90ed55feb1dd947f4df2c Mon Sep 17 00:00:00 2001 From: Ben Guthro Date: Tue, 30 Jul 2013 08:24:54 -0400 Subject: xen / ACPI: notify xen when reduced hardware sleep is available Use the acpi_os_prepare_extended_sleep() callback to notify xen to make use of the reduced hardware sleep functionality The xen hypervisor change underlying this is commit 62d1a69 ("ACPI: support v5 (reduced HW) sleep interface") on the master branch of git://xenbits.xen.org/xen.git. Signed-off-by: Jan Beulich Signed-off-by: Ben Guthro Acked-by: Konrad Wilk Signed-off-by: Rafael J. Wysocki --- drivers/xen/acpi.c | 41 +++++++++++++++++++++++++++------------- include/xen/acpi.h | 8 ++++++-- include/xen/interface/platform.h | 7 ++++--- 3 files changed, 38 insertions(+), 18 deletions(-) (limited to 'include') diff --git a/drivers/xen/acpi.c b/drivers/xen/acpi.c index 119d42a2bf5..90307c0b630 100644 --- a/drivers/xen/acpi.c +++ b/drivers/xen/acpi.c @@ -35,28 +35,43 @@ #include #include -int xen_acpi_notify_hypervisor_state(u8 sleep_state, - u32 pm1a_cnt, u32 pm1b_cnt) +static int xen_acpi_notify_hypervisor_state(u8 sleep_state, + u32 val_a, u32 val_b, + bool extended) { + unsigned int bits = extended ? 8 : 16; + struct xen_platform_op op = { .cmd = XENPF_enter_acpi_sleep, .interface_version = XENPF_INTERFACE_VERSION, - .u = { - .enter_acpi_sleep = { - .pm1a_cnt_val = (u16)pm1a_cnt, - .pm1b_cnt_val = (u16)pm1b_cnt, - .sleep_state = sleep_state, - }, + .u.enter_acpi_sleep = { + .val_a = (u16)val_a, + .val_b = (u16)val_b, + .sleep_state = sleep_state, + .flags = extended ? XENPF_ACPI_SLEEP_EXTENDED : 0, }, }; - if ((pm1a_cnt & 0xffff0000) || (pm1b_cnt & 0xffff0000)) { - WARN(1, "Using more than 16bits of PM1A/B 0x%x/0x%x!" - "Email xen-devel@lists.xensource.com Thank you.\n", \ - pm1a_cnt, pm1b_cnt); + if (WARN((val_a & (~0 << bits)) || (val_b & (~0 << bits)), + "Using more than %u bits of sleep control values %#x/%#x!" + "Email xen-devel@lists.xen.org - Thank you.\n", \ + bits, val_a, val_b)) return -1; - } HYPERVISOR_dom0_op(&op); return 1; } + +int xen_acpi_notify_hypervisor_sleep(u8 sleep_state, + u32 pm1a_cnt, u32 pm1b_cnt) +{ + return xen_acpi_notify_hypervisor_state(sleep_state, pm1a_cnt, + pm1b_cnt, false); +} + +int xen_acpi_notify_hypervisor_extended_sleep(u8 sleep_state, + u32 val_a, u32 val_b) +{ + return xen_acpi_notify_hypervisor_state(sleep_state, val_a, + val_b, true); +} diff --git a/include/xen/acpi.h b/include/xen/acpi.h index 46aa3d1c165..4ddd7dc4a61 100644 --- a/include/xen/acpi.h +++ b/include/xen/acpi.h @@ -75,8 +75,10 @@ static inline int xen_acpi_get_pxm(acpi_handle h) return -ENXIO; } -int xen_acpi_notify_hypervisor_state(u8 sleep_state, +int xen_acpi_notify_hypervisor_sleep(u8 sleep_state, u32 pm1a_cnt, u32 pm1b_cnd); +int xen_acpi_notify_hypervisor_extended_sleep(u8 sleep_state, + u32 val_a, u32 val_b); static inline int xen_acpi_suspend_lowlevel(void) { @@ -93,7 +95,9 @@ static inline void xen_acpi_sleep_register(void) { if (xen_initial_domain()) { acpi_os_set_prepare_sleep( - &xen_acpi_notify_hypervisor_state); + &xen_acpi_notify_hypervisor_sleep); + acpi_os_set_prepare_extended_sleep( + &xen_acpi_notify_hypervisor_extended_sleep); acpi_suspend_lowlevel = xen_acpi_suspend_lowlevel; } diff --git a/include/xen/interface/platform.h b/include/xen/interface/platform.h index c57d5f67f70..f1331e3e727 100644 --- a/include/xen/interface/platform.h +++ b/include/xen/interface/platform.h @@ -152,10 +152,11 @@ DEFINE_GUEST_HANDLE_STRUCT(xenpf_firmware_info_t); #define XENPF_enter_acpi_sleep 51 struct xenpf_enter_acpi_sleep { /* IN variables */ - uint16_t pm1a_cnt_val; /* PM1a control value. */ - uint16_t pm1b_cnt_val; /* PM1b control value. */ + uint16_t val_a; /* PM1a control / sleep type A. */ + uint16_t val_b; /* PM1b control / sleep type B. */ uint32_t sleep_state; /* Which state to enter (Sn). */ - uint32_t flags; /* Must be zero. */ +#define XENPF_ACPI_SLEEP_EXTENDED 0x00000001 + uint32_t flags; /* XENPF_ACPI_SLEEP_*. */ }; DEFINE_GUEST_HANDLE_STRUCT(xenpf_enter_acpi_sleep_t); -- cgit v1.2.3-70-g09d2 From caf5c03f17c33a14ef0e7033000f89e4d0910f5a Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 30 Jul 2013 14:38:34 +0200 Subject: ACPI: Move acpi_bus_get_device() from bus.c to scan.c Move acpi_bus_get_device() from bus.c to scan.c which allows acpi_bus_data_handler() to become static and clean up the latter. Signed-off-by: Rafael J. Wysocki --- drivers/acpi/bus.c | 21 --------------------- drivers/acpi/scan.c | 30 ++++++++++++++++++++++-------- include/acpi/acpi_bus.h | 1 - 3 files changed, 22 insertions(+), 30 deletions(-) (limited to 'include') diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index 25b289ff429..7df97d27754 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -89,27 +89,6 @@ static struct dmi_system_id dsdt_dmi_table[] __initdata = { Device Management -------------------------------------------------------------------------- */ -int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device) -{ - acpi_status status; - - if (!device) - return -EINVAL; - - /* TBD: Support fixed-feature devices */ - - status = acpi_get_data(handle, acpi_bus_data_handler, (void **)device); - if (ACPI_FAILURE(status) || !*device) { - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No context for object [%p]\n", - handle)); - return -ENODEV; - } - - return 0; -} - -EXPORT_SYMBOL(acpi_bus_get_device); - acpi_status acpi_bus_get_status_handle(acpi_handle handle, unsigned long long *sta) { diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 10985573aaa..4b2679342e8 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -997,6 +997,28 @@ struct bus_type acpi_bus_type = { .uevent = acpi_device_uevent, }; +static void acpi_bus_data_handler(acpi_handle handle, void *context) +{ + /* Intentionally empty. */ +} + +int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device) +{ + acpi_status status; + + if (!device) + return -EINVAL; + + status = acpi_get_data(handle, acpi_bus_data_handler, (void **)device); + if (ACPI_FAILURE(status) || !*device) { + ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No context for object [%p]\n", + handle)); + return -ENODEV; + } + return 0; +} +EXPORT_SYMBOL_GPL(acpi_bus_get_device); + int acpi_device_add(struct acpi_device *device, void (*release)(struct device *)) { @@ -1208,14 +1230,6 @@ acpi_bus_get_ejd(acpi_handle handle, acpi_handle *ejd) } EXPORT_SYMBOL_GPL(acpi_bus_get_ejd); -void acpi_bus_data_handler(acpi_handle handle, void *context) -{ - - /* TBD */ - - return; -} - static int acpi_bus_extract_wakeup_device_power_package(acpi_handle handle, struct acpi_device_wakeup *wakeup) { diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index 2650d1f19e4..2a42cb36d23 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -363,7 +363,6 @@ extern void unregister_acpi_bus_notifier(struct notifier_block *nb); */ int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device); -void acpi_bus_data_handler(acpi_handle handle, void *context); acpi_status acpi_bus_get_status_handle(acpi_handle handle, unsigned long long *sta); int acpi_bus_get_status(struct acpi_device *device); -- cgit v1.2.3-70-g09d2 From 5ff0a268037d344f86df690ccb994d8bc015d2d9 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Tue, 6 Aug 2013 22:53:03 +0530 Subject: cpufreq: Clean up header files included in the core This patch addresses the following issues in the header files in the cpufreq core: - Include headers in ascending order, so that we don't add same many times by mistake. - must be included after , so that they override whatever they need to. - Remove unnecessary includes. - Don't include files already included by cpufreq.h or cpufreq_governor.h. [rjw: Changelog] Signed-off-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/cpufreq.c | 19 ++++++------------- drivers/cpufreq/cpufreq_conservative.c | 12 ------------ drivers/cpufreq/cpufreq_governor.c | 6 ------ drivers/cpufreq/cpufreq_governor.h | 5 ++--- drivers/cpufreq/cpufreq_ondemand.c | 12 +----------- drivers/cpufreq/cpufreq_performance.c | 3 +-- drivers/cpufreq/cpufreq_powersave.c | 3 +-- drivers/cpufreq/cpufreq_stats.c | 9 +-------- drivers/cpufreq/freq_table.c | 4 +--- include/linux/cpufreq.h | 11 +++-------- 10 files changed, 16 insertions(+), 68 deletions(-) (limited to 'include') diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index e34bd94e12b..84583717487 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -17,24 +17,17 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt -#include -#include -#include -#include -#include -#include +#include #include #include -#include -#include -#include #include -#include -#include -#include +#include +#include +#include #include +#include #include - +#include #include /** diff --git a/drivers/cpufreq/cpufreq_conservative.c b/drivers/cpufreq/cpufreq_conservative.c index 0ceb2eff5a7..841e2569965 100644 --- a/drivers/cpufreq/cpufreq_conservative.c +++ b/drivers/cpufreq/cpufreq_conservative.c @@ -11,19 +11,7 @@ * published by the Free Software Foundation. */ -#include -#include -#include -#include -#include -#include -#include -#include -#include #include -#include -#include - #include "cpufreq_governor.h" /* Conservative governor macros */ diff --git a/drivers/cpufreq/cpufreq_governor.c b/drivers/cpufreq/cpufreq_governor.c index 7409dbd1d89..556064e9cc0 100644 --- a/drivers/cpufreq/cpufreq_governor.c +++ b/drivers/cpufreq/cpufreq_governor.c @@ -16,15 +16,9 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt -#include -#include -#include #include #include -#include #include -#include -#include #include "cpufreq_governor.h" diff --git a/drivers/cpufreq/cpufreq_governor.h b/drivers/cpufreq/cpufreq_governor.h index 0e0dd4c8202..cf0b7a4425b 100644 --- a/drivers/cpufreq/cpufreq_governor.h +++ b/drivers/cpufreq/cpufreq_governor.h @@ -18,10 +18,9 @@ #define _CPUFREQ_GOVERNOR_H #include -#include +#include +#include #include -#include -#include /* * The polling frequency depends on the capability of the processor. Default diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c index a3c5574f9b3..27c732eee43 100644 --- a/drivers/cpufreq/cpufreq_ondemand.c +++ b/drivers/cpufreq/cpufreq_ondemand.c @@ -12,20 +12,10 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt -#include -#include -#include -#include -#include -#include -#include +#include #include #include -#include #include -#include -#include - #include "cpufreq_governor.h" /* On-demand governor macros */ diff --git a/drivers/cpufreq/cpufreq_performance.c b/drivers/cpufreq/cpufreq_performance.c index 9fef7d6e4e6..cf117deb39b 100644 --- a/drivers/cpufreq/cpufreq_performance.c +++ b/drivers/cpufreq/cpufreq_performance.c @@ -12,10 +12,9 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt -#include -#include #include #include +#include static int cpufreq_governor_performance(struct cpufreq_policy *policy, unsigned int event) diff --git a/drivers/cpufreq/cpufreq_powersave.c b/drivers/cpufreq/cpufreq_powersave.c index 32109a14f5d..e3b874c235e 100644 --- a/drivers/cpufreq/cpufreq_powersave.c +++ b/drivers/cpufreq/cpufreq_powersave.c @@ -12,10 +12,9 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt -#include -#include #include #include +#include static int cpufreq_governor_powersave(struct cpufreq_policy *policy, unsigned int event) diff --git a/drivers/cpufreq/cpufreq_stats.c b/drivers/cpufreq/cpufreq_stats.c index cb384135545..a7143b0597a 100644 --- a/drivers/cpufreq/cpufreq_stats.c +++ b/drivers/cpufreq/cpufreq_stats.c @@ -9,17 +9,10 @@ * published by the Free Software Foundation. */ -#include -#include #include -#include #include #include -#include -#include -#include -#include -#include +#include #include static spinlock_t cpufreq_stats_lock; diff --git a/drivers/cpufreq/freq_table.c b/drivers/cpufreq/freq_table.c index f0d87412cc9..f111454a7ae 100644 --- a/drivers/cpufreq/freq_table.c +++ b/drivers/cpufreq/freq_table.c @@ -11,10 +11,8 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt -#include -#include -#include #include +#include /********************************************************************* * FREQUENCY TABLE HELPERS * diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index e1fd215e16c..97627bbbca8 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -11,16 +11,11 @@ #ifndef _LINUX_CPUFREQ_H #define _LINUX_CPUFREQ_H -#include -#include -#include -#include +#include +#include #include +#include #include -#include -#include -#include -#include #define CPUFREQ_NAME_LEN 16 /* Print length for names. Extra 1 space for accomodating '\n' in prints */ -- cgit v1.2.3-70-g09d2 From 74aca95da74836a6807118f6590d8df8232c74a9 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Tue, 6 Aug 2013 22:53:04 +0530 Subject: cpufreq: Re-arrange declarations in cpufreq.h They are pretty much mixed up. Although generic headers are present, definitions/declarations are present outside of them too ... This patch just moves stuff up and down to make it look better and consistent. Signed-off-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- include/linux/cpufreq.h | 373 +++++++++++++++++++++++------------------------- 1 file changed, 177 insertions(+), 196 deletions(-) (limited to 'include') diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 97627bbbca8..0d3b0266bc9 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -17,60 +17,30 @@ #include #include -#define CPUFREQ_NAME_LEN 16 -/* Print length for names. Extra 1 space for accomodating '\n' in prints */ -#define CPUFREQ_NAME_PLEN (CPUFREQ_NAME_LEN + 1) - /********************************************************************* - * CPUFREQ NOTIFIER INTERFACE * + * CPUFREQ INTERFACE * *********************************************************************/ - -#define CPUFREQ_TRANSITION_NOTIFIER (0) -#define CPUFREQ_POLICY_NOTIFIER (1) - -#ifdef CONFIG_CPU_FREQ -int cpufreq_register_notifier(struct notifier_block *nb, unsigned int list); -int cpufreq_unregister_notifier(struct notifier_block *nb, unsigned int list); -extern void disable_cpufreq(void); -#else /* CONFIG_CPU_FREQ */ -static inline int cpufreq_register_notifier(struct notifier_block *nb, - unsigned int list) -{ - return 0; -} -static inline int cpufreq_unregister_notifier(struct notifier_block *nb, - unsigned int list) -{ - return 0; -} -static inline void disable_cpufreq(void) { } -#endif /* CONFIG_CPU_FREQ */ - -/* if (cpufreq_driver->target) exists, the ->governor decides what frequency - * within the limits is used. If (cpufreq_driver->setpolicy> exists, these - * two generic policies are available: - */ - -#define CPUFREQ_POLICY_POWERSAVE (1) -#define CPUFREQ_POLICY_PERFORMANCE (2) - -/* Frequency values here are CPU kHz so that hardware which doesn't run - * with some frequencies can complain without having to guess what per - * cent / per mille means. +/* + * Frequency values here are CPU kHz + * * Maximum transition latency is in nanoseconds - if it's unknown, * CPUFREQ_ETERNAL shall be used. */ +#define CPUFREQ_ETERNAL (-1) +#define CPUFREQ_NAME_LEN 16 +/* Print length for names. Extra 1 space for accomodating '\n' in prints */ +#define CPUFREQ_NAME_PLEN (CPUFREQ_NAME_LEN + 1) + struct cpufreq_governor; -/* /sys/devices/system/cpu/cpufreq: entry point for global variables */ -extern struct kobject *cpufreq_global_kobject; -int cpufreq_get_global_kobject(void); -void cpufreq_put_global_kobject(void); -int cpufreq_sysfs_create_file(const struct attribute *attr); -void cpufreq_sysfs_remove_file(const struct attribute *attr); +struct cpufreq_freqs { + unsigned int cpu; /* cpu nr */ + unsigned int old; + unsigned int new; + u8 flags; /* flags of cpufreq_driver, see below. */ +}; -#define CPUFREQ_ETERNAL (-1) struct cpufreq_cpuinfo { unsigned int max_freq; unsigned int min_freq; @@ -117,111 +87,95 @@ struct cpufreq_policy { int transition_ongoing; /* Tracks transition status */ }; -#define CPUFREQ_ADJUST (0) -#define CPUFREQ_INCOMPATIBLE (1) -#define CPUFREQ_NOTIFY (2) -#define CPUFREQ_START (3) -#define CPUFREQ_UPDATE_POLICY_CPU (4) - /* Only for ACPI */ #define CPUFREQ_SHARED_TYPE_NONE (0) /* None */ #define CPUFREQ_SHARED_TYPE_HW (1) /* HW does needed coordination */ #define CPUFREQ_SHARED_TYPE_ALL (2) /* All dependent CPUs should set freq */ #define CPUFREQ_SHARED_TYPE_ANY (3) /* Freq can be set from any dependent CPU*/ +struct cpufreq_policy *cpufreq_cpu_get(unsigned int cpu); +void cpufreq_cpu_put(struct cpufreq_policy *data); + static inline bool policy_is_shared(struct cpufreq_policy *policy) { return cpumask_weight(policy->cpus) > 1; } -/******************** cpufreq transition notifiers *******************/ - -#define CPUFREQ_PRECHANGE (0) -#define CPUFREQ_POSTCHANGE (1) -#define CPUFREQ_RESUMECHANGE (8) -#define CPUFREQ_SUSPENDCHANGE (9) +/* /sys/devices/system/cpu/cpufreq: entry point for global variables */ +extern struct kobject *cpufreq_global_kobject; +int cpufreq_get_global_kobject(void); +void cpufreq_put_global_kobject(void); +int cpufreq_sysfs_create_file(const struct attribute *attr); +void cpufreq_sysfs_remove_file(const struct attribute *attr); -struct cpufreq_freqs { - unsigned int cpu; /* cpu nr */ - unsigned int old; - unsigned int new; - u8 flags; /* flags of cpufreq_driver, see below. */ -}; +#ifdef CONFIG_CPU_FREQ +unsigned int cpufreq_get(unsigned int cpu); +unsigned int cpufreq_quick_get(unsigned int cpu); +unsigned int cpufreq_quick_get_max(unsigned int cpu); +void disable_cpufreq(void); -/** - * cpufreq_scale - "old * mult / div" calculation for large values (32-bit-arch - * safe) - * @old: old value - * @div: divisor - * @mult: multiplier - * - * - * new = old * mult / div - */ -static inline unsigned long cpufreq_scale(unsigned long old, u_int div, - u_int mult) +u64 get_cpu_idle_time(unsigned int cpu, u64 *wall, int io_busy); +int cpufreq_get_policy(struct cpufreq_policy *policy, unsigned int cpu); +int cpufreq_update_policy(unsigned int cpu); +bool have_governor_per_policy(void); +struct kobject *get_governor_parent_kobj(struct cpufreq_policy *policy); +#else +static inline unsigned int cpufreq_get(unsigned int cpu) { -#if BITS_PER_LONG == 32 - - u64 result = ((u64) old) * ((u64) mult); - do_div(result, div); - return (unsigned long) result; - -#elif BITS_PER_LONG == 64 - - unsigned long result = old * ((u64) mult); - result /= div; - return result; - + return 0; +} +static inline unsigned int cpufreq_quick_get(unsigned int cpu) +{ + return 0; +} +static inline unsigned int cpufreq_quick_get_max(unsigned int cpu) +{ + return 0; +} +static inline void disable_cpufreq(void) { } #endif -}; /********************************************************************* - * CPUFREQ GOVERNORS * + * CPUFREQ DRIVER INTERFACE * *********************************************************************/ -#define CPUFREQ_GOV_START 1 -#define CPUFREQ_GOV_STOP 2 -#define CPUFREQ_GOV_LIMITS 3 -#define CPUFREQ_GOV_POLICY_INIT 4 -#define CPUFREQ_GOV_POLICY_EXIT 5 +#define CPUFREQ_RELATION_L 0 /* lowest frequency at or above target */ +#define CPUFREQ_RELATION_H 1 /* highest frequency below or at target */ -struct cpufreq_governor { - char name[CPUFREQ_NAME_LEN]; - int initialized; - int (*governor) (struct cpufreq_policy *policy, - unsigned int event); - ssize_t (*show_setspeed) (struct cpufreq_policy *policy, - char *buf); - int (*store_setspeed) (struct cpufreq_policy *policy, - unsigned int freq); - unsigned int max_transition_latency; /* HW must be able to switch to - next freq faster than this value in nano secs or we - will fallback to performance governor */ - struct list_head governor_list; - struct module *owner; +struct freq_attr { + struct attribute attr; + ssize_t (*show)(struct cpufreq_policy *, char *); + ssize_t (*store)(struct cpufreq_policy *, const char *, size_t count); }; -/* - * Pass a target to the cpufreq driver. - */ -extern int cpufreq_driver_target(struct cpufreq_policy *policy, - unsigned int target_freq, - unsigned int relation); -extern int __cpufreq_driver_target(struct cpufreq_policy *policy, - unsigned int target_freq, - unsigned int relation); -int cpufreq_register_governor(struct cpufreq_governor *governor); -void cpufreq_unregister_governor(struct cpufreq_governor *governor); +#define cpufreq_freq_attr_ro(_name) \ +static struct freq_attr _name = \ +__ATTR(_name, 0444, show_##_name, NULL) -/********************************************************************* - * CPUFREQ DRIVER INTERFACE * - *********************************************************************/ +#define cpufreq_freq_attr_ro_perm(_name, _perm) \ +static struct freq_attr _name = \ +__ATTR(_name, _perm, show_##_name, NULL) -#define CPUFREQ_RELATION_L 0 /* lowest frequency at or above target */ -#define CPUFREQ_RELATION_H 1 /* highest frequency below or at target */ +#define cpufreq_freq_attr_rw(_name) \ +static struct freq_attr _name = \ +__ATTR(_name, 0644, show_##_name, store_##_name) + +struct global_attr { + struct attribute attr; + ssize_t (*show)(struct kobject *kobj, + struct attribute *attr, char *buf); + ssize_t (*store)(struct kobject *a, struct attribute *b, + const char *c, size_t count); +}; + +#define define_one_global_ro(_name) \ +static struct global_attr _name = \ +__ATTR(_name, 0444, show_##_name, NULL) + +#define define_one_global_rw(_name) \ +static struct global_attr _name = \ +__ATTR(_name, 0644, show_##_name, store_##_name) -struct freq_attr; struct cpufreq_driver { struct module *owner; @@ -258,7 +212,6 @@ struct cpufreq_driver { }; /* flags */ - #define CPUFREQ_STICKY 0x01 /* the driver isn't removed even if * all ->init() calls failed */ #define CPUFREQ_CONST_LOOPS 0x02 /* loops_per_jiffy or other kernel @@ -270,8 +223,7 @@ struct cpufreq_driver { int cpufreq_register_driver(struct cpufreq_driver *driver_data); int cpufreq_unregister_driver(struct cpufreq_driver *driver_data); -void cpufreq_notify_transition(struct cpufreq_policy *policy, - struct cpufreq_freqs *freqs, unsigned int state); +const char *cpufreq_get_current_driver(void); static inline void cpufreq_verify_within_limits(struct cpufreq_policy *policy, unsigned int min, unsigned int max) @@ -289,86 +241,117 @@ static inline void cpufreq_verify_within_limits(struct cpufreq_policy *policy, return; } -struct freq_attr { - struct attribute attr; - ssize_t (*show)(struct cpufreq_policy *, char *); - ssize_t (*store)(struct cpufreq_policy *, const char *, size_t count); -}; - -#define cpufreq_freq_attr_ro(_name) \ -static struct freq_attr _name = \ -__ATTR(_name, 0444, show_##_name, NULL) - -#define cpufreq_freq_attr_ro_perm(_name, _perm) \ -static struct freq_attr _name = \ -__ATTR(_name, _perm, show_##_name, NULL) - -#define cpufreq_freq_attr_rw(_name) \ -static struct freq_attr _name = \ -__ATTR(_name, 0644, show_##_name, store_##_name) +/********************************************************************* + * CPUFREQ NOTIFIER INTERFACE * + *********************************************************************/ -struct global_attr { - struct attribute attr; - ssize_t (*show)(struct kobject *kobj, - struct attribute *attr, char *buf); - ssize_t (*store)(struct kobject *a, struct attribute *b, - const char *c, size_t count); -}; +#define CPUFREQ_TRANSITION_NOTIFIER (0) +#define CPUFREQ_POLICY_NOTIFIER (1) -#define define_one_global_ro(_name) \ -static struct global_attr _name = \ -__ATTR(_name, 0444, show_##_name, NULL) +/* Transition notifiers */ +#define CPUFREQ_PRECHANGE (0) +#define CPUFREQ_POSTCHANGE (1) +#define CPUFREQ_RESUMECHANGE (8) +#define CPUFREQ_SUSPENDCHANGE (9) -#define define_one_global_rw(_name) \ -static struct global_attr _name = \ -__ATTR(_name, 0644, show_##_name, store_##_name) +/* Policy Notifiers */ +#define CPUFREQ_ADJUST (0) +#define CPUFREQ_INCOMPATIBLE (1) +#define CPUFREQ_NOTIFY (2) +#define CPUFREQ_START (3) +#define CPUFREQ_UPDATE_POLICY_CPU (4) -struct cpufreq_policy *cpufreq_cpu_get(unsigned int cpu); -void cpufreq_cpu_put(struct cpufreq_policy *data); -const char *cpufreq_get_current_driver(void); +#ifdef CONFIG_CPU_FREQ +int cpufreq_register_notifier(struct notifier_block *nb, unsigned int list); +int cpufreq_unregister_notifier(struct notifier_block *nb, unsigned int list); -/********************************************************************* - * CPUFREQ 2.6. INTERFACE * - *********************************************************************/ -u64 get_cpu_idle_time(unsigned int cpu, u64 *wall, int io_busy); -int cpufreq_get_policy(struct cpufreq_policy *policy, unsigned int cpu); -int cpufreq_update_policy(unsigned int cpu); -bool have_governor_per_policy(void); -struct kobject *get_governor_parent_kobj(struct cpufreq_policy *policy); +void cpufreq_notify_transition(struct cpufreq_policy *policy, + struct cpufreq_freqs *freqs, unsigned int state); -#ifdef CONFIG_CPU_FREQ -/* - * query the current CPU frequency (in kHz). If zero, cpufreq couldn't detect it - */ -unsigned int cpufreq_get(unsigned int cpu); -#else -static inline unsigned int cpufreq_get(unsigned int cpu) +#else /* CONFIG_CPU_FREQ */ +static inline int cpufreq_register_notifier(struct notifier_block *nb, + unsigned int list) { return 0; } -#endif - -/* - * query the last known CPU freq (in kHz). If zero, cpufreq couldn't detect it - */ -#ifdef CONFIG_CPU_FREQ -unsigned int cpufreq_quick_get(unsigned int cpu); -unsigned int cpufreq_quick_get_max(unsigned int cpu); -#else -static inline unsigned int cpufreq_quick_get(unsigned int cpu) +static inline int cpufreq_unregister_notifier(struct notifier_block *nb, + unsigned int list) { return 0; } -static inline unsigned int cpufreq_quick_get_max(unsigned int cpu) +#endif /* !CONFIG_CPU_FREQ */ + +/** + * cpufreq_scale - "old * mult / div" calculation for large values (32-bit-arch + * safe) + * @old: old value + * @div: divisor + * @mult: multiplier + * + * + * new = old * mult / div + */ +static inline unsigned long cpufreq_scale(unsigned long old, u_int div, + u_int mult) { - return 0; -} +#if BITS_PER_LONG == 32 + u64 result = ((u64) old) * ((u64) mult); + do_div(result, div); + return (unsigned long) result; + +#elif BITS_PER_LONG == 64 + unsigned long result = old * ((u64) mult); + result /= div; + return result; #endif +} /********************************************************************* - * CPUFREQ DEFAULT GOVERNOR * + * CPUFREQ GOVERNORS * *********************************************************************/ +/* + * If (cpufreq_driver->target) exists, the ->governor decides what frequency + * within the limits is used. If (cpufreq_driver->setpolicy> exists, these + * two generic policies are available: + */ +#define CPUFREQ_POLICY_POWERSAVE (1) +#define CPUFREQ_POLICY_PERFORMANCE (2) + +/* Governor Events */ +#define CPUFREQ_GOV_START 1 +#define CPUFREQ_GOV_STOP 2 +#define CPUFREQ_GOV_LIMITS 3 +#define CPUFREQ_GOV_POLICY_INIT 4 +#define CPUFREQ_GOV_POLICY_EXIT 5 + +struct cpufreq_governor { + char name[CPUFREQ_NAME_LEN]; + int initialized; + int (*governor) (struct cpufreq_policy *policy, + unsigned int event); + ssize_t (*show_setspeed) (struct cpufreq_policy *policy, + char *buf); + int (*store_setspeed) (struct cpufreq_policy *policy, + unsigned int freq); + unsigned int max_transition_latency; /* HW must be able to switch to + next freq faster than this value in nano secs or we + will fallback to performance governor */ + struct list_head governor_list; + struct module *owner; +}; + +/* Pass a target to the cpufreq driver */ +int cpufreq_driver_target(struct cpufreq_policy *policy, + unsigned int target_freq, + unsigned int relation); +int __cpufreq_driver_target(struct cpufreq_policy *policy, + unsigned int target_freq, + unsigned int relation); +int cpufreq_register_governor(struct cpufreq_governor *governor); +void cpufreq_unregister_governor(struct cpufreq_governor *governor); + +/* CPUFREQ DEFAULT GOVERNOR */ /* * Performance governor is fallback governor if any other gov failed to auto * load due latency restrictions @@ -417,18 +400,16 @@ int cpufreq_frequency_table_target(struct cpufreq_policy *policy, unsigned int relation, unsigned int *index); -/* the following 3 funtions are for cpufreq core use only */ +void cpufreq_frequency_table_update_policy_cpu(struct cpufreq_policy *policy); +ssize_t cpufreq_show_cpus(const struct cpumask *mask, char *buf); + +/* the following funtion is for cpufreq core use only */ struct cpufreq_frequency_table *cpufreq_frequency_get_table(unsigned int cpu); /* the following are really really optional */ extern struct freq_attr cpufreq_freq_attr_scaling_available_freqs; - void cpufreq_frequency_table_get_attr(struct cpufreq_frequency_table *table, unsigned int cpu); -void cpufreq_frequency_table_update_policy_cpu(struct cpufreq_policy *policy); - void cpufreq_frequency_table_put_attr(unsigned int cpu); -ssize_t cpufreq_show_cpus(const struct cpumask *mask, char *buf); - #endif /* _LINUX_CPUFREQ_H */ -- cgit v1.2.3-70-g09d2 From 3a3e9e06d0c11b8efa95933a88c9e67209fa4330 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Tue, 6 Aug 2013 22:53:05 +0530 Subject: cpufreq: Give consistent names to cpufreq_policy objects They are called policy, cur_policy, new_policy, data, etc. Just call them policy wherever possible. Signed-off-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/cpufreq.c | 200 ++++++++++++++++++------------------- drivers/cpufreq/cpufreq_governor.h | 2 +- drivers/cpufreq/cpufreq_ondemand.c | 10 +- drivers/cpufreq/cpufreq_stats.c | 12 +-- include/linux/cpufreq.h | 2 +- 5 files changed, 113 insertions(+), 113 deletions(-) (limited to 'include') diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 84583717487..1793fe82595 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -179,7 +179,7 @@ EXPORT_SYMBOL_GPL(get_cpu_idle_time); static struct cpufreq_policy *__cpufreq_cpu_get(unsigned int cpu, bool sysfs) { - struct cpufreq_policy *data; + struct cpufreq_policy *policy; unsigned long flags; if (cpu >= nr_cpu_ids) @@ -195,16 +195,16 @@ static struct cpufreq_policy *__cpufreq_cpu_get(unsigned int cpu, bool sysfs) goto err_out_unlock; /* get the CPU */ - data = per_cpu(cpufreq_cpu_data, cpu); + policy = per_cpu(cpufreq_cpu_data, cpu); - if (!data) + if (!policy) goto err_out_put_module; - if (!sysfs && !kobject_get(&data->kobj)) + if (!sysfs && !kobject_get(&policy->kobj)) goto err_out_put_module; read_unlock_irqrestore(&cpufreq_driver_lock, flags); - return data; + return policy; err_out_put_module: module_put(cpufreq_driver->owner); @@ -228,25 +228,25 @@ static struct cpufreq_policy *cpufreq_cpu_get_sysfs(unsigned int cpu) return __cpufreq_cpu_get(cpu, true); } -static void __cpufreq_cpu_put(struct cpufreq_policy *data, bool sysfs) +static void __cpufreq_cpu_put(struct cpufreq_policy *policy, bool sysfs) { if (!sysfs) - kobject_put(&data->kobj); + kobject_put(&policy->kobj); module_put(cpufreq_driver->owner); } -void cpufreq_cpu_put(struct cpufreq_policy *data) +void cpufreq_cpu_put(struct cpufreq_policy *policy) { if (cpufreq_disabled()) return; - __cpufreq_cpu_put(data, false); + __cpufreq_cpu_put(policy, false); } EXPORT_SYMBOL_GPL(cpufreq_cpu_put); -static void cpufreq_cpu_put_sysfs(struct cpufreq_policy *data) +static void cpufreq_cpu_put_sysfs(struct cpufreq_policy *policy) { - __cpufreq_cpu_put(data, true); + __cpufreq_cpu_put(policy, true); } /********************************************************************* @@ -453,8 +453,8 @@ show_one(scaling_min_freq, min); show_one(scaling_max_freq, max); show_one(scaling_cur_freq, cur); -static int __cpufreq_set_policy(struct cpufreq_policy *data, - struct cpufreq_policy *policy); +static int __cpufreq_set_policy(struct cpufreq_policy *policy, + struct cpufreq_policy *new_policy); /** * cpufreq_per_cpu_attr_write() / store_##file_name() - sysfs write access @@ -1136,7 +1136,7 @@ static void update_policy_cpu(struct cpufreq_policy *policy, unsigned int cpu) CPUFREQ_UPDATE_POLICY_CPU, policy); } -static int cpufreq_nominate_new_policy_cpu(struct cpufreq_policy *data, +static int cpufreq_nominate_new_policy_cpu(struct cpufreq_policy *policy, unsigned int old_cpu, bool frozen) { struct device *cpu_dev; @@ -1144,27 +1144,27 @@ static int cpufreq_nominate_new_policy_cpu(struct cpufreq_policy *data, int ret; /* first sibling now owns the new sysfs dir */ - cpu_dev = get_cpu_device(cpumask_first(data->cpus)); + cpu_dev = get_cpu_device(cpumask_first(policy->cpus)); /* Don't touch sysfs files during light-weight tear-down */ if (frozen) return cpu_dev->id; sysfs_remove_link(&cpu_dev->kobj, "cpufreq"); - ret = kobject_move(&data->kobj, &cpu_dev->kobj); + ret = kobject_move(&policy->kobj, &cpu_dev->kobj); if (ret) { pr_err("%s: Failed to move kobj: %d", __func__, ret); WARN_ON(lock_policy_rwsem_write(old_cpu)); - cpumask_set_cpu(old_cpu, data->cpus); + cpumask_set_cpu(old_cpu, policy->cpus); write_lock_irqsave(&cpufreq_driver_lock, flags); - per_cpu(cpufreq_cpu_data, old_cpu) = data; + per_cpu(cpufreq_cpu_data, old_cpu) = policy; write_unlock_irqrestore(&cpufreq_driver_lock, flags); unlock_policy_rwsem_write(old_cpu); - ret = sysfs_create_link(&cpu_dev->kobj, &data->kobj, + ret = sysfs_create_link(&cpu_dev->kobj, &policy->kobj, "cpufreq"); return -EINVAL; @@ -1186,7 +1186,7 @@ static int __cpufreq_remove_dev(struct device *dev, unsigned int cpu = dev->id, cpus; int new_cpu; unsigned long flags; - struct cpufreq_policy *data; + struct cpufreq_policy *policy; struct kobject *kobj; struct completion *cmp; @@ -1194,44 +1194,44 @@ static int __cpufreq_remove_dev(struct device *dev, write_lock_irqsave(&cpufreq_driver_lock, flags); - data = per_cpu(cpufreq_cpu_data, cpu); + policy = per_cpu(cpufreq_cpu_data, cpu); per_cpu(cpufreq_cpu_data, cpu) = NULL; /* Save the policy somewhere when doing a light-weight tear-down */ if (frozen) - per_cpu(cpufreq_cpu_data_fallback, cpu) = data; + per_cpu(cpufreq_cpu_data_fallback, cpu) = policy; write_unlock_irqrestore(&cpufreq_driver_lock, flags); - if (!data) { + if (!policy) { pr_debug("%s: No cpu_data found\n", __func__); return -EINVAL; } if (cpufreq_driver->target) - __cpufreq_governor(data, CPUFREQ_GOV_STOP); + __cpufreq_governor(policy, CPUFREQ_GOV_STOP); #ifdef CONFIG_HOTPLUG_CPU if (!cpufreq_driver->setpolicy) strncpy(per_cpu(cpufreq_cpu_governor, cpu), - data->governor->name, CPUFREQ_NAME_LEN); + policy->governor->name, CPUFREQ_NAME_LEN); #endif WARN_ON(lock_policy_rwsem_write(cpu)); - cpus = cpumask_weight(data->cpus); + cpus = cpumask_weight(policy->cpus); if (cpus > 1) - cpumask_clear_cpu(cpu, data->cpus); + cpumask_clear_cpu(cpu, policy->cpus); unlock_policy_rwsem_write(cpu); - if (cpu != data->cpu && !frozen) { + if (cpu != policy->cpu && !frozen) { sysfs_remove_link(&dev->kobj, "cpufreq"); } else if (cpus > 1) { - new_cpu = cpufreq_nominate_new_policy_cpu(data, cpu, frozen); + new_cpu = cpufreq_nominate_new_policy_cpu(policy, cpu, frozen); if (new_cpu >= 0) { WARN_ON(lock_policy_rwsem_write(cpu)); - update_policy_cpu(data, new_cpu); + update_policy_cpu(policy, new_cpu); unlock_policy_rwsem_write(cpu); if (!frozen) { @@ -1244,12 +1244,12 @@ static int __cpufreq_remove_dev(struct device *dev, /* If cpu is last user of policy, free policy */ if (cpus == 1) { if (cpufreq_driver->target) - __cpufreq_governor(data, CPUFREQ_GOV_POLICY_EXIT); + __cpufreq_governor(policy, CPUFREQ_GOV_POLICY_EXIT); if (!frozen) { lock_policy_rwsem_read(cpu); - kobj = &data->kobj; - cmp = &data->kobj_unregister; + kobj = &policy->kobj; + cmp = &policy->kobj_unregister; unlock_policy_rwsem_read(cpu); kobject_put(kobj); @@ -1269,14 +1269,14 @@ static int __cpufreq_remove_dev(struct device *dev, * subsequent light-weight ->init() to succeed. */ if (cpufreq_driver->exit) - cpufreq_driver->exit(data); + cpufreq_driver->exit(policy); if (!frozen) - cpufreq_policy_free(data); + cpufreq_policy_free(policy); } else { if (cpufreq_driver->target) { - __cpufreq_governor(data, CPUFREQ_GOV_START); - __cpufreq_governor(data, CPUFREQ_GOV_LIMITS); + __cpufreq_governor(policy, CPUFREQ_GOV_START); + __cpufreq_governor(policy, CPUFREQ_GOV_LIMITS); } } @@ -1450,23 +1450,23 @@ static int cpufreq_bp_suspend(void) int ret = 0; int cpu = smp_processor_id(); - struct cpufreq_policy *cpu_policy; + struct cpufreq_policy *policy; pr_debug("suspending cpu %u\n", cpu); /* If there's no policy for the boot CPU, we have nothing to do. */ - cpu_policy = cpufreq_cpu_get(cpu); - if (!cpu_policy) + policy = cpufreq_cpu_get(cpu); + if (!policy) return 0; if (cpufreq_driver->suspend) { - ret = cpufreq_driver->suspend(cpu_policy); + ret = cpufreq_driver->suspend(policy); if (ret) printk(KERN_ERR "cpufreq: suspend failed in ->suspend " - "step on CPU %u\n", cpu_policy->cpu); + "step on CPU %u\n", policy->cpu); } - cpufreq_cpu_put(cpu_policy); + cpufreq_cpu_put(policy); return ret; } @@ -1488,28 +1488,28 @@ static void cpufreq_bp_resume(void) int ret = 0; int cpu = smp_processor_id(); - struct cpufreq_policy *cpu_policy; + struct cpufreq_policy *policy; pr_debug("resuming cpu %u\n", cpu); /* If there's no policy for the boot CPU, we have nothing to do. */ - cpu_policy = cpufreq_cpu_get(cpu); - if (!cpu_policy) + policy = cpufreq_cpu_get(cpu); + if (!policy) return; if (cpufreq_driver->resume) { - ret = cpufreq_driver->resume(cpu_policy); + ret = cpufreq_driver->resume(policy); if (ret) { printk(KERN_ERR "cpufreq: resume failed in ->resume " - "step on CPU %u\n", cpu_policy->cpu); + "step on CPU %u\n", policy->cpu); goto fail; } } - schedule_work(&cpu_policy->update); + schedule_work(&policy->update); fail: - cpufreq_cpu_put(cpu_policy); + cpufreq_cpu_put(policy); } static struct syscore_ops cpufreq_syscore_ops = { @@ -1829,95 +1829,95 @@ EXPORT_SYMBOL(cpufreq_get_policy); * data : current policy. * policy : policy to be set. */ -static int __cpufreq_set_policy(struct cpufreq_policy *data, - struct cpufreq_policy *policy) +static int __cpufreq_set_policy(struct cpufreq_policy *policy, + struct cpufreq_policy *new_policy) { int ret = 0, failed = 1; - pr_debug("setting new policy for CPU %u: %u - %u kHz\n", policy->cpu, - policy->min, policy->max); + pr_debug("setting new policy for CPU %u: %u - %u kHz\n", new_policy->cpu, + new_policy->min, new_policy->max); - memcpy(&policy->cpuinfo, &data->cpuinfo, + memcpy(&new_policy->cpuinfo, &policy->cpuinfo, sizeof(struct cpufreq_cpuinfo)); - if (policy->min > data->max || policy->max < data->min) { + if (new_policy->min > policy->max || new_policy->max < policy->min) { ret = -EINVAL; goto error_out; } /* verify the cpu speed can be set within this limit */ - ret = cpufreq_driver->verify(policy); + ret = cpufreq_driver->verify(new_policy); if (ret) goto error_out; /* adjust if necessary - all reasons */ blocking_notifier_call_chain(&cpufreq_policy_notifier_list, - CPUFREQ_ADJUST, policy); + CPUFREQ_ADJUST, new_policy); /* adjust if necessary - hardware incompatibility*/ blocking_notifier_call_chain(&cpufreq_policy_notifier_list, - CPUFREQ_INCOMPATIBLE, policy); + CPUFREQ_INCOMPATIBLE, new_policy); /* * verify the cpu speed can be set within this limit, which might be * different to the first one */ - ret = cpufreq_driver->verify(policy); + ret = cpufreq_driver->verify(new_policy); if (ret) goto error_out; /* notification of the new policy */ blocking_notifier_call_chain(&cpufreq_policy_notifier_list, - CPUFREQ_NOTIFY, policy); + CPUFREQ_NOTIFY, new_policy); - data->min = policy->min; - data->max = policy->max; + policy->min = new_policy->min; + policy->max = new_policy->max; pr_debug("new min and max freqs are %u - %u kHz\n", - data->min, data->max); + policy->min, policy->max); if (cpufreq_driver->setpolicy) { - data->policy = policy->policy; + policy->policy = new_policy->policy; pr_debug("setting range\n"); - ret = cpufreq_driver->setpolicy(policy); + ret = cpufreq_driver->setpolicy(new_policy); } else { - if (policy->governor != data->governor) { + if (new_policy->governor != policy->governor) { /* save old, working values */ - struct cpufreq_governor *old_gov = data->governor; + struct cpufreq_governor *old_gov = policy->governor; pr_debug("governor switch\n"); /* end old governor */ - if (data->governor) { - __cpufreq_governor(data, CPUFREQ_GOV_STOP); - unlock_policy_rwsem_write(policy->cpu); - __cpufreq_governor(data, + if (policy->governor) { + __cpufreq_governor(policy, CPUFREQ_GOV_STOP); + unlock_policy_rwsem_write(new_policy->cpu); + __cpufreq_governor(policy, CPUFREQ_GOV_POLICY_EXIT); - lock_policy_rwsem_write(policy->cpu); + lock_policy_rwsem_write(new_policy->cpu); } /* start new governor */ - data->governor = policy->governor; - if (!__cpufreq_governor(data, CPUFREQ_GOV_POLICY_INIT)) { - if (!__cpufreq_governor(data, CPUFREQ_GOV_START)) { + policy->governor = new_policy->governor; + if (!__cpufreq_governor(policy, CPUFREQ_GOV_POLICY_INIT)) { + if (!__cpufreq_governor(policy, CPUFREQ_GOV_START)) { failed = 0; } else { - unlock_policy_rwsem_write(policy->cpu); - __cpufreq_governor(data, + unlock_policy_rwsem_write(new_policy->cpu); + __cpufreq_governor(policy, CPUFREQ_GOV_POLICY_EXIT); - lock_policy_rwsem_write(policy->cpu); + lock_policy_rwsem_write(new_policy->cpu); } } if (failed) { /* new governor failed, so re-start old one */ pr_debug("starting governor %s failed\n", - data->governor->name); + policy->governor->name); if (old_gov) { - data->governor = old_gov; - __cpufreq_governor(data, + policy->governor = old_gov; + __cpufreq_governor(policy, CPUFREQ_GOV_POLICY_INIT); - __cpufreq_governor(data, + __cpufreq_governor(policy, CPUFREQ_GOV_START); } ret = -EINVAL; @@ -1926,7 +1926,7 @@ static int __cpufreq_set_policy(struct cpufreq_policy *data, /* might be a policy change, too, so fall through */ } pr_debug("governor: change or update limits\n"); - __cpufreq_governor(data, CPUFREQ_GOV_LIMITS); + __cpufreq_governor(policy, CPUFREQ_GOV_LIMITS); } error_out: @@ -1942,11 +1942,11 @@ error_out: */ int cpufreq_update_policy(unsigned int cpu) { - struct cpufreq_policy *data = cpufreq_cpu_get(cpu); - struct cpufreq_policy policy; + struct cpufreq_policy *policy = cpufreq_cpu_get(cpu); + struct cpufreq_policy new_policy; int ret; - if (!data) { + if (!policy) { ret = -ENODEV; goto no_policy; } @@ -1957,34 +1957,34 @@ int cpufreq_update_policy(unsigned int cpu) } pr_debug("updating policy for CPU %u\n", cpu); - memcpy(&policy, data, sizeof(struct cpufreq_policy)); - policy.min = data->user_policy.min; - policy.max = data->user_policy.max; - policy.policy = data->user_policy.policy; - policy.governor = data->user_policy.governor; + memcpy(&new_policy, policy, sizeof(struct cpufreq_policy)); + new_policy.min = policy->user_policy.min; + new_policy.max = policy->user_policy.max; + new_policy.policy = policy->user_policy.policy; + new_policy.governor = policy->user_policy.governor; /* * BIOS might change freq behind our back * -> ask driver for current freq and notify governors about a change */ if (cpufreq_driver->get) { - policy.cur = cpufreq_driver->get(cpu); - if (!data->cur) { + new_policy.cur = cpufreq_driver->get(cpu); + if (!policy->cur) { pr_debug("Driver did not initialize current freq"); - data->cur = policy.cur; + policy->cur = new_policy.cur; } else { - if (data->cur != policy.cur && cpufreq_driver->target) - cpufreq_out_of_sync(cpu, data->cur, - policy.cur); + if (policy->cur != new_policy.cur && cpufreq_driver->target) + cpufreq_out_of_sync(cpu, policy->cur, + new_policy.cur); } } - ret = __cpufreq_set_policy(data, &policy); + ret = __cpufreq_set_policy(policy, &new_policy); unlock_policy_rwsem_write(cpu); fail: - cpufreq_cpu_put(data); + cpufreq_cpu_put(policy); no_policy: return ret; } diff --git a/drivers/cpufreq/cpufreq_governor.h b/drivers/cpufreq/cpufreq_governor.h index cf0b7a4425b..264e509a914 100644 --- a/drivers/cpufreq/cpufreq_governor.h +++ b/drivers/cpufreq/cpufreq_governor.h @@ -221,7 +221,7 @@ struct od_ops { void (*powersave_bias_init_cpu)(int cpu); unsigned int (*powersave_bias_target)(struct cpufreq_policy *policy, unsigned int freq_next, unsigned int relation); - void (*freq_increase)(struct cpufreq_policy *p, unsigned int freq); + void (*freq_increase)(struct cpufreq_policy *policy, unsigned int freq); }; struct cs_ops { diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c index 27c732eee43..47d4b69be7c 100644 --- a/drivers/cpufreq/cpufreq_ondemand.c +++ b/drivers/cpufreq/cpufreq_ondemand.c @@ -132,18 +132,18 @@ static void ondemand_powersave_bias_init(void) } } -static void dbs_freq_increase(struct cpufreq_policy *p, unsigned int freq) +static void dbs_freq_increase(struct cpufreq_policy *policy, unsigned int freq) { - struct dbs_data *dbs_data = p->governor_data; + struct dbs_data *dbs_data = policy->governor_data; struct od_dbs_tuners *od_tuners = dbs_data->tuners; if (od_tuners->powersave_bias) - freq = od_ops.powersave_bias_target(p, freq, + freq = od_ops.powersave_bias_target(policy, freq, CPUFREQ_RELATION_H); - else if (p->cur == p->max) + else if (policy->cur == policy->max) return; - __cpufreq_driver_target(p, freq, od_tuners->powersave_bias ? + __cpufreq_driver_target(policy, freq, od_tuners->powersave_bias ? CPUFREQ_RELATION_L : CPUFREQ_RELATION_H); } diff --git a/drivers/cpufreq/cpufreq_stats.c b/drivers/cpufreq/cpufreq_stats.c index a7143b0597a..a17b14ee37d 100644 --- a/drivers/cpufreq/cpufreq_stats.c +++ b/drivers/cpufreq/cpufreq_stats.c @@ -193,7 +193,7 @@ static int cpufreq_stats_create_table(struct cpufreq_policy *policy, { unsigned int i, j, count = 0, ret = 0; struct cpufreq_stats *stat; - struct cpufreq_policy *data; + struct cpufreq_policy *current_policy; unsigned int alloc_size; unsigned int cpu = policy->cpu; if (per_cpu(cpufreq_stats_table, cpu)) @@ -202,13 +202,13 @@ static int cpufreq_stats_create_table(struct cpufreq_policy *policy, if ((stat) == NULL) return -ENOMEM; - data = cpufreq_cpu_get(cpu); - if (data == NULL) { + current_policy = cpufreq_cpu_get(cpu); + if (current_policy == NULL) { ret = -EINVAL; goto error_get_fail; } - ret = sysfs_create_group(&data->kobj, &stats_attr_group); + ret = sysfs_create_group(¤t_policy->kobj, &stats_attr_group); if (ret) goto error_out; @@ -251,10 +251,10 @@ static int cpufreq_stats_create_table(struct cpufreq_policy *policy, stat->last_time = get_jiffies_64(); stat->last_index = freq_table_get_index(stat, policy->cur); spin_unlock(&cpufreq_stats_lock); - cpufreq_cpu_put(data); + cpufreq_cpu_put(current_policy); return 0; error_out: - cpufreq_cpu_put(data); + cpufreq_cpu_put(current_policy); error_get_fail: kfree(stat); per_cpu(cpufreq_stats_table, cpu) = NULL; diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 0d3b0266bc9..29208923c9d 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -94,7 +94,7 @@ struct cpufreq_policy { #define CPUFREQ_SHARED_TYPE_ANY (3) /* Freq can be set from any dependent CPU*/ struct cpufreq_policy *cpufreq_cpu_get(unsigned int cpu); -void cpufreq_cpu_put(struct cpufreq_policy *data); +void cpufreq_cpu_put(struct cpufreq_policy *policy); static inline bool policy_is_shared(struct cpufreq_policy *policy) { -- cgit v1.2.3-70-g09d2 From c88a1f8b96e7384627b918dfabbfc0c615a4a914 Mon Sep 17 00:00:00 2001 From: Lukasz Majewski Date: Tue, 6 Aug 2013 22:53:08 +0530 Subject: cpufreq: Store cpufreq policies in a list Policies available in the cpufreq framework are now linked together. They are accessible via cpufreq_policy_list defined in the cpufreq core. [rjw: Fix from Yinghai Lu folded in] Signed-off-by: Lukasz Majewski Signed-off-by: Myungjoo Ham Signed-off-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/cpufreq.c | 12 ++++++++++++ include/linux/cpufreq.h | 1 + 2 files changed, 13 insertions(+) (limited to 'include') diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 9e83d914207..75c5bd424d5 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -40,6 +40,7 @@ static DEFINE_PER_CPU(struct cpufreq_policy *, cpufreq_cpu_data); static DEFINE_PER_CPU(struct cpufreq_policy *, cpufreq_cpu_data_fallback); static DEFINE_RWLOCK(cpufreq_driver_lock); static DEFINE_MUTEX(cpufreq_governor_lock); +static LIST_HEAD(cpufreq_policy_list); #ifdef CONFIG_HOTPLUG_CPU /* This one keeps track of the previously set governor of a removed CPU */ @@ -952,6 +953,7 @@ static struct cpufreq_policy *cpufreq_policy_alloc(void) if (!zalloc_cpumask_var(&policy->related_cpus, GFP_KERNEL)) goto err_free_cpumask; + INIT_LIST_HEAD(&policy->policy_list); return policy; err_free_cpumask: @@ -964,6 +966,12 @@ err_free_policy: static void cpufreq_policy_free(struct cpufreq_policy *policy) { + unsigned long flags; + + write_lock_irqsave(&cpufreq_driver_lock, flags); + list_del(&policy->policy_list); + write_unlock_irqrestore(&cpufreq_driver_lock, flags); + free_cpumask_var(policy->related_cpus); free_cpumask_var(policy->cpus); kfree(policy); @@ -1077,6 +1085,10 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif, ret = cpufreq_add_dev_interface(policy, dev); if (ret) goto err_out_unregister; + + write_lock_irqsave(&cpufreq_driver_lock, flags); + list_add(&policy->policy_list, &cpufreq_policy_list); + write_unlock_irqrestore(&cpufreq_driver_lock, flags); } cpufreq_init_policy(policy); diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 29208923c9d..431a05d4b4c 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -82,6 +82,7 @@ struct cpufreq_policy { struct cpufreq_real_policy user_policy; + struct list_head policy_list; struct kobject kobj; struct completion kobj_unregister; int transition_ongoing; /* Tracks transition status */ -- cgit v1.2.3-70-g09d2 From adc97d6a735dbb1e94cb4f1bf0b55f258b349941 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Tue, 6 Aug 2013 22:53:12 +0530 Subject: cpufreq: Drop the owner field from struct cpufreq_driver We don't need to set .owner = THIS_MODULE any more in cpufreq drivers as this field isn't used any more by the cpufreq core. This patch removes it and updates all dependent drivers accordingly. Signed-off-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- Documentation/cpu-freq/cpu-drivers.txt | 2 -- drivers/cpufreq/acpi-cpufreq.c | 1 - drivers/cpufreq/at32ap-cpufreq.c | 1 - drivers/cpufreq/blackfin-cpufreq.c | 1 - drivers/cpufreq/cpufreq-nforce2.c | 1 - drivers/cpufreq/cris-artpec3-cpufreq.c | 1 - drivers/cpufreq/cris-etraxfs-cpufreq.c | 1 - drivers/cpufreq/e_powersaver.c | 1 - drivers/cpufreq/elanfreq.c | 1 - drivers/cpufreq/gx-suspmod.c | 1 - drivers/cpufreq/ia64-acpi-cpufreq.c | 1 - drivers/cpufreq/intel_pstate.c | 1 - drivers/cpufreq/kirkwood-cpufreq.c | 1 - drivers/cpufreq/longhaul.c | 1 - drivers/cpufreq/longrun.c | 1 - drivers/cpufreq/loongson2_cpufreq.c | 1 - drivers/cpufreq/maple-cpufreq.c | 1 - drivers/cpufreq/p4-clockmod.c | 1 - drivers/cpufreq/pasemi-cpufreq.c | 1 - drivers/cpufreq/pcc-cpufreq.c | 1 - drivers/cpufreq/pmac32-cpufreq.c | 1 - drivers/cpufreq/pmac64-cpufreq.c | 1 - drivers/cpufreq/powernow-k6.c | 1 - drivers/cpufreq/powernow-k7.c | 1 - drivers/cpufreq/powernow-k8.c | 1 - drivers/cpufreq/ppc-corenet-cpufreq.c | 1 - drivers/cpufreq/ppc_cbe_cpufreq.c | 1 - drivers/cpufreq/s3c2416-cpufreq.c | 1 - drivers/cpufreq/s3c64xx-cpufreq.c | 1 - drivers/cpufreq/sc520_freq.c | 1 - drivers/cpufreq/sh-cpufreq.c | 1 - drivers/cpufreq/sparc-us2e-cpufreq.c | 1 - drivers/cpufreq/sparc-us3-cpufreq.c | 1 - drivers/cpufreq/speedstep-centrino.c | 1 - drivers/cpufreq/speedstep-ich.c | 1 - drivers/cpufreq/speedstep-smi.c | 1 - include/linux/cpufreq.h | 1 - 37 files changed, 38 deletions(-) (limited to 'include') diff --git a/Documentation/cpu-freq/cpu-drivers.txt b/Documentation/cpu-freq/cpu-drivers.txt index 19fa98e07bf..40282e61791 100644 --- a/Documentation/cpu-freq/cpu-drivers.txt +++ b/Documentation/cpu-freq/cpu-drivers.txt @@ -50,8 +50,6 @@ What shall this struct cpufreq_driver contain? cpufreq_driver.name - The name of this driver. -cpufreq_driver.owner - THIS_MODULE; - cpufreq_driver.init - A pointer to the per-CPU initialization function. diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c index 44758ce9936..9b5d1b1a9c0 100644 --- a/drivers/cpufreq/acpi-cpufreq.c +++ b/drivers/cpufreq/acpi-cpufreq.c @@ -936,7 +936,6 @@ static struct cpufreq_driver acpi_cpufreq_driver = { .exit = acpi_cpufreq_cpu_exit, .resume = acpi_cpufreq_resume, .name = "acpi-cpufreq", - .owner = THIS_MODULE, .attr = acpi_cpufreq_attr, }; diff --git a/drivers/cpufreq/at32ap-cpufreq.c b/drivers/cpufreq/at32ap-cpufreq.c index 654488723cb..e0c38d93899 100644 --- a/drivers/cpufreq/at32ap-cpufreq.c +++ b/drivers/cpufreq/at32ap-cpufreq.c @@ -108,7 +108,6 @@ static int __init at32_cpufreq_driver_init(struct cpufreq_policy *policy) static struct cpufreq_driver at32_driver = { .name = "at32ap", - .owner = THIS_MODULE, .init = at32_cpufreq_driver_init, .verify = at32_verify_speed, .target = at32_set_target, diff --git a/drivers/cpufreq/blackfin-cpufreq.c b/drivers/cpufreq/blackfin-cpufreq.c index 9cdbbd278a8..ef05978a723 100644 --- a/drivers/cpufreq/blackfin-cpufreq.c +++ b/drivers/cpufreq/blackfin-cpufreq.c @@ -225,7 +225,6 @@ static struct cpufreq_driver bfin_driver = { .get = bfin_getfreq_khz, .init = __bfin_cpu_init, .name = "bfin cpufreq", - .owner = THIS_MODULE, .attr = bfin_freq_attr, }; diff --git a/drivers/cpufreq/cpufreq-nforce2.c b/drivers/cpufreq/cpufreq-nforce2.c index af1542d4144..b83d45f6857 100644 --- a/drivers/cpufreq/cpufreq-nforce2.c +++ b/drivers/cpufreq/cpufreq-nforce2.c @@ -379,7 +379,6 @@ static struct cpufreq_driver nforce2_driver = { .get = nforce2_get, .init = nforce2_cpu_init, .exit = nforce2_cpu_exit, - .owner = THIS_MODULE, }; #ifdef MODULE diff --git a/drivers/cpufreq/cris-artpec3-cpufreq.c b/drivers/cpufreq/cris-artpec3-cpufreq.c index ee142c49057..cb8276dd19c 100644 --- a/drivers/cpufreq/cris-artpec3-cpufreq.c +++ b/drivers/cpufreq/cris-artpec3-cpufreq.c @@ -111,7 +111,6 @@ static struct cpufreq_driver cris_freq_driver = { .init = cris_freq_cpu_init, .exit = cris_freq_cpu_exit, .name = "cris_freq", - .owner = THIS_MODULE, .attr = cris_freq_attr, }; diff --git a/drivers/cpufreq/cris-etraxfs-cpufreq.c b/drivers/cpufreq/cris-etraxfs-cpufreq.c index 12952235d5d..72328f77dc5 100644 --- a/drivers/cpufreq/cris-etraxfs-cpufreq.c +++ b/drivers/cpufreq/cris-etraxfs-cpufreq.c @@ -108,7 +108,6 @@ static struct cpufreq_driver cris_freq_driver = { .init = cris_freq_cpu_init, .exit = cris_freq_cpu_exit, .name = "cris_freq", - .owner = THIS_MODULE, .attr = cris_freq_attr, }; diff --git a/drivers/cpufreq/e_powersaver.c b/drivers/cpufreq/e_powersaver.c index de974be6b77..09f64cc8301 100644 --- a/drivers/cpufreq/e_powersaver.c +++ b/drivers/cpufreq/e_powersaver.c @@ -436,7 +436,6 @@ static struct cpufreq_driver eps_driver = { .exit = eps_cpu_exit, .get = eps_get, .name = "e_powersaver", - .owner = THIS_MODULE, .attr = eps_attr, }; diff --git a/drivers/cpufreq/elanfreq.c b/drivers/cpufreq/elanfreq.c index 658d860344b..823a400d98f 100644 --- a/drivers/cpufreq/elanfreq.c +++ b/drivers/cpufreq/elanfreq.c @@ -274,7 +274,6 @@ static struct cpufreq_driver elanfreq_driver = { .init = elanfreq_cpu_init, .exit = elanfreq_cpu_exit, .name = "elanfreq", - .owner = THIS_MODULE, .attr = elanfreq_attr, }; diff --git a/drivers/cpufreq/gx-suspmod.c b/drivers/cpufreq/gx-suspmod.c index 4f25fb63c09..ef5fee7dc0b 100644 --- a/drivers/cpufreq/gx-suspmod.c +++ b/drivers/cpufreq/gx-suspmod.c @@ -446,7 +446,6 @@ static struct cpufreq_driver gx_suspmod_driver = { .target = cpufreq_gx_target, .init = cpufreq_gx_cpu_init, .name = "gx-suspmod", - .owner = THIS_MODULE, }; static int __init cpufreq_gx_init(void) diff --git a/drivers/cpufreq/ia64-acpi-cpufreq.c b/drivers/cpufreq/ia64-acpi-cpufreq.c index 08792dd4d62..3e14f031717 100644 --- a/drivers/cpufreq/ia64-acpi-cpufreq.c +++ b/drivers/cpufreq/ia64-acpi-cpufreq.c @@ -409,7 +409,6 @@ static struct cpufreq_driver acpi_cpufreq_driver = { .init = acpi_cpufreq_cpu_init, .exit = acpi_cpufreq_cpu_exit, .name = "acpi-cpufreq", - .owner = THIS_MODULE, .attr = acpi_cpufreq_attr, }; diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 7cde885011e..6efd96c196b 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -665,7 +665,6 @@ static struct cpufreq_driver intel_pstate_driver = { .init = intel_pstate_cpu_init, .exit = intel_pstate_cpu_exit, .name = "intel_pstate", - .owner = THIS_MODULE, }; static int __initdata no_load; diff --git a/drivers/cpufreq/kirkwood-cpufreq.c b/drivers/cpufreq/kirkwood-cpufreq.c index c233ea61736..45e4d7fc261 100644 --- a/drivers/cpufreq/kirkwood-cpufreq.c +++ b/drivers/cpufreq/kirkwood-cpufreq.c @@ -158,7 +158,6 @@ static struct cpufreq_driver kirkwood_cpufreq_driver = { .init = kirkwood_cpufreq_cpu_init, .exit = kirkwood_cpufreq_cpu_exit, .name = "kirkwood-cpufreq", - .owner = THIS_MODULE, .attr = kirkwood_cpufreq_attr, }; diff --git a/drivers/cpufreq/longhaul.c b/drivers/cpufreq/longhaul.c index 8c49261df57..4ada1cccb05 100644 --- a/drivers/cpufreq/longhaul.c +++ b/drivers/cpufreq/longhaul.c @@ -948,7 +948,6 @@ static struct cpufreq_driver longhaul_driver = { .init = longhaul_cpu_init, .exit = longhaul_cpu_exit, .name = "longhaul", - .owner = THIS_MODULE, .attr = longhaul_attr, }; diff --git a/drivers/cpufreq/longrun.c b/drivers/cpufreq/longrun.c index 0fe041d1f77..5aa031612d5 100644 --- a/drivers/cpufreq/longrun.c +++ b/drivers/cpufreq/longrun.c @@ -286,7 +286,6 @@ static struct cpufreq_driver longrun_driver = { .get = longrun_get, .init = longrun_cpu_init, .name = "longrun", - .owner = THIS_MODULE, }; static const struct x86_cpu_id longrun_ids[] = { diff --git a/drivers/cpufreq/loongson2_cpufreq.c b/drivers/cpufreq/loongson2_cpufreq.c index bb838b98507..e65de91b534 100644 --- a/drivers/cpufreq/loongson2_cpufreq.c +++ b/drivers/cpufreq/loongson2_cpufreq.c @@ -157,7 +157,6 @@ static struct freq_attr *loongson2_table_attr[] = { }; static struct cpufreq_driver loongson2_cpufreq_driver = { - .owner = THIS_MODULE, .name = "loongson2", .init = loongson2_cpufreq_cpu_init, .verify = loongson2_cpufreq_verify, diff --git a/drivers/cpufreq/maple-cpufreq.c b/drivers/cpufreq/maple-cpufreq.c index cdd62915efa..41c601f4631 100644 --- a/drivers/cpufreq/maple-cpufreq.c +++ b/drivers/cpufreq/maple-cpufreq.c @@ -190,7 +190,6 @@ static int maple_cpufreq_cpu_init(struct cpufreq_policy *policy) static struct cpufreq_driver maple_cpufreq_driver = { .name = "maple", - .owner = THIS_MODULE, .flags = CPUFREQ_CONST_LOOPS, .init = maple_cpufreq_cpu_init, .verify = maple_cpufreq_verify, diff --git a/drivers/cpufreq/p4-clockmod.c b/drivers/cpufreq/p4-clockmod.c index 9ee78170ff8..2f0a2a65c37 100644 --- a/drivers/cpufreq/p4-clockmod.c +++ b/drivers/cpufreq/p4-clockmod.c @@ -279,7 +279,6 @@ static struct cpufreq_driver p4clockmod_driver = { .exit = cpufreq_p4_cpu_exit, .get = cpufreq_p4_get, .name = "p4-clockmod", - .owner = THIS_MODULE, .attr = p4clockmod_attr, }; diff --git a/drivers/cpufreq/pasemi-cpufreq.c b/drivers/cpufreq/pasemi-cpufreq.c index b704da40406..534e43a60d1 100644 --- a/drivers/cpufreq/pasemi-cpufreq.c +++ b/drivers/cpufreq/pasemi-cpufreq.c @@ -297,7 +297,6 @@ static int pas_cpufreq_target(struct cpufreq_policy *policy, static struct cpufreq_driver pas_cpufreq_driver = { .name = "pas-cpufreq", - .owner = THIS_MODULE, .flags = CPUFREQ_CONST_LOOPS, .init = pas_cpufreq_cpu_init, .exit = pas_cpufreq_cpu_exit, diff --git a/drivers/cpufreq/pcc-cpufreq.c b/drivers/cpufreq/pcc-cpufreq.c index 1581fcc4cf4..d81c4e5ea0a 100644 --- a/drivers/cpufreq/pcc-cpufreq.c +++ b/drivers/cpufreq/pcc-cpufreq.c @@ -587,7 +587,6 @@ static struct cpufreq_driver pcc_cpufreq_driver = { .init = pcc_cpufreq_cpu_init, .exit = pcc_cpufreq_cpu_exit, .name = "pcc-cpufreq", - .owner = THIS_MODULE, }; static int __init pcc_cpufreq_init(void) diff --git a/drivers/cpufreq/pmac32-cpufreq.c b/drivers/cpufreq/pmac32-cpufreq.c index 3104fad8248..38cdc63c38d 100644 --- a/drivers/cpufreq/pmac32-cpufreq.c +++ b/drivers/cpufreq/pmac32-cpufreq.c @@ -477,7 +477,6 @@ static struct cpufreq_driver pmac_cpufreq_driver = { .flags = CPUFREQ_PM_NO_WARN, .attr = pmac_cpu_freqs_attr, .name = "powermac", - .owner = THIS_MODULE, }; diff --git a/drivers/cpufreq/pmac64-cpufreq.c b/drivers/cpufreq/pmac64-cpufreq.c index 4d7799b7af8..b6850d97f0d 100644 --- a/drivers/cpufreq/pmac64-cpufreq.c +++ b/drivers/cpufreq/pmac64-cpufreq.c @@ -371,7 +371,6 @@ static int g5_cpufreq_cpu_init(struct cpufreq_policy *policy) static struct cpufreq_driver g5_cpufreq_driver = { .name = "powermac", - .owner = THIS_MODULE, .flags = CPUFREQ_CONST_LOOPS, .init = g5_cpufreq_cpu_init, .verify = g5_cpufreq_verify, diff --git a/drivers/cpufreq/powernow-k6.c b/drivers/cpufreq/powernow-k6.c index ea8e10382ec..85f1c8c25dd 100644 --- a/drivers/cpufreq/powernow-k6.c +++ b/drivers/cpufreq/powernow-k6.c @@ -207,7 +207,6 @@ static struct cpufreq_driver powernow_k6_driver = { .exit = powernow_k6_cpu_exit, .get = powernow_k6_get, .name = "powernow-k6", - .owner = THIS_MODULE, .attr = powernow_k6_attr, }; diff --git a/drivers/cpufreq/powernow-k7.c b/drivers/cpufreq/powernow-k7.c index 4687d40d021..14ce480be8a 100644 --- a/drivers/cpufreq/powernow-k7.c +++ b/drivers/cpufreq/powernow-k7.c @@ -716,7 +716,6 @@ static struct cpufreq_driver powernow_driver = { .init = powernow_cpu_init, .exit = powernow_cpu_exit, .name = "powernow-k7", - .owner = THIS_MODULE, .attr = powernow_table_attr, }; diff --git a/drivers/cpufreq/powernow-k8.c b/drivers/cpufreq/powernow-k8.c index 3f3c6cae91d..2344a9ed17f 100644 --- a/drivers/cpufreq/powernow-k8.c +++ b/drivers/cpufreq/powernow-k8.c @@ -1240,7 +1240,6 @@ static struct cpufreq_driver cpufreq_amd64_driver = { .exit = powernowk8_cpu_exit, .get = powernowk8_get, .name = "powernow-k8", - .owner = THIS_MODULE, .attr = powernow_k8_attr, }; diff --git a/drivers/cpufreq/ppc-corenet-cpufreq.c b/drivers/cpufreq/ppc-corenet-cpufreq.c index 3cae4529f95..60e81d524ea 100644 --- a/drivers/cpufreq/ppc-corenet-cpufreq.c +++ b/drivers/cpufreq/ppc-corenet-cpufreq.c @@ -300,7 +300,6 @@ static struct freq_attr *corenet_cpufreq_attr[] = { static struct cpufreq_driver ppc_corenet_cpufreq_driver = { .name = "ppc_cpufreq", - .owner = THIS_MODULE, .flags = CPUFREQ_CONST_LOOPS, .init = corenet_cpufreq_cpu_init, .exit = __exit_p(corenet_cpufreq_cpu_exit), diff --git a/drivers/cpufreq/ppc_cbe_cpufreq.c b/drivers/cpufreq/ppc_cbe_cpufreq.c index 5936f8d6f2c..2e448f0bbdc 100644 --- a/drivers/cpufreq/ppc_cbe_cpufreq.c +++ b/drivers/cpufreq/ppc_cbe_cpufreq.c @@ -181,7 +181,6 @@ static struct cpufreq_driver cbe_cpufreq_driver = { .init = cbe_cpufreq_cpu_init, .exit = cbe_cpufreq_cpu_exit, .name = "cbe-cpufreq", - .owner = THIS_MODULE, .flags = CPUFREQ_CONST_LOOPS, }; diff --git a/drivers/cpufreq/s3c2416-cpufreq.c b/drivers/cpufreq/s3c2416-cpufreq.c index ce5b9fca9c1..22dcb81ef9d 100644 --- a/drivers/cpufreq/s3c2416-cpufreq.c +++ b/drivers/cpufreq/s3c2416-cpufreq.c @@ -524,7 +524,6 @@ static struct freq_attr *s3c2416_cpufreq_attr[] = { }; static struct cpufreq_driver s3c2416_cpufreq_driver = { - .owner = THIS_MODULE, .flags = 0, .verify = s3c2416_cpufreq_verify_speed, .target = s3c2416_cpufreq_set_target, diff --git a/drivers/cpufreq/s3c64xx-cpufreq.c b/drivers/cpufreq/s3c64xx-cpufreq.c index 13bb4bae64e..8a72b0c555f 100644 --- a/drivers/cpufreq/s3c64xx-cpufreq.c +++ b/drivers/cpufreq/s3c64xx-cpufreq.c @@ -263,7 +263,6 @@ static int s3c64xx_cpufreq_driver_init(struct cpufreq_policy *policy) } static struct cpufreq_driver s3c64xx_cpufreq_driver = { - .owner = THIS_MODULE, .flags = 0, .verify = s3c64xx_cpufreq_verify_speed, .target = s3c64xx_cpufreq_set_target, diff --git a/drivers/cpufreq/sc520_freq.c b/drivers/cpufreq/sc520_freq.c index 77a210975fc..d6f6c6f4efa 100644 --- a/drivers/cpufreq/sc520_freq.c +++ b/drivers/cpufreq/sc520_freq.c @@ -147,7 +147,6 @@ static struct cpufreq_driver sc520_freq_driver = { .init = sc520_freq_cpu_init, .exit = sc520_freq_cpu_exit, .name = "sc520_freq", - .owner = THIS_MODULE, .attr = sc520_freq_attr, }; diff --git a/drivers/cpufreq/sh-cpufreq.c b/drivers/cpufreq/sh-cpufreq.c index 73adb64651e..ffc6d24b0cf 100644 --- a/drivers/cpufreq/sh-cpufreq.c +++ b/drivers/cpufreq/sh-cpufreq.c @@ -160,7 +160,6 @@ static struct freq_attr *sh_freq_attr[] = { }; static struct cpufreq_driver sh_cpufreq_driver = { - .owner = THIS_MODULE, .name = "sh", .get = sh_cpufreq_get, .target = sh_cpufreq_target, diff --git a/drivers/cpufreq/sparc-us2e-cpufreq.c b/drivers/cpufreq/sparc-us2e-cpufreq.c index 7c43a725e5d..cf5bc2ca16f 100644 --- a/drivers/cpufreq/sparc-us2e-cpufreq.c +++ b/drivers/cpufreq/sparc-us2e-cpufreq.c @@ -365,7 +365,6 @@ static int __init us2e_freq_init(void) driver->target = us2e_freq_target; driver->get = us2e_freq_get; driver->exit = us2e_freq_cpu_exit; - driver->owner = THIS_MODULE, strcpy(driver->name, "UltraSPARC-IIe"); cpufreq_us2e_driver = driver; diff --git a/drivers/cpufreq/sparc-us3-cpufreq.c b/drivers/cpufreq/sparc-us3-cpufreq.c index 7f500c140bc..ac76b489979 100644 --- a/drivers/cpufreq/sparc-us3-cpufreq.c +++ b/drivers/cpufreq/sparc-us3-cpufreq.c @@ -226,7 +226,6 @@ static int __init us3_freq_init(void) driver->target = us3_freq_target; driver->get = us3_freq_get; driver->exit = us3_freq_cpu_exit; - driver->owner = THIS_MODULE, strcpy(driver->name, "UltraSPARC-III"); cpufreq_us3_driver = driver; diff --git a/drivers/cpufreq/speedstep-centrino.c b/drivers/cpufreq/speedstep-centrino.c index 0915e712fbd..f897d510584 100644 --- a/drivers/cpufreq/speedstep-centrino.c +++ b/drivers/cpufreq/speedstep-centrino.c @@ -575,7 +575,6 @@ static struct cpufreq_driver centrino_driver = { .target = centrino_target, .get = get_cur_freq, .attr = centrino_attr, - .owner = THIS_MODULE, }; /* diff --git a/drivers/cpufreq/speedstep-ich.c b/drivers/cpufreq/speedstep-ich.c index e2e5aa97145..5355abb69af 100644 --- a/drivers/cpufreq/speedstep-ich.c +++ b/drivers/cpufreq/speedstep-ich.c @@ -378,7 +378,6 @@ static struct cpufreq_driver speedstep_driver = { .init = speedstep_cpu_init, .exit = speedstep_cpu_exit, .get = speedstep_get, - .owner = THIS_MODULE, .attr = speedstep_attr, }; diff --git a/drivers/cpufreq/speedstep-smi.c b/drivers/cpufreq/speedstep-smi.c index f5a6b70ee6c..abfba4f731e 100644 --- a/drivers/cpufreq/speedstep-smi.c +++ b/drivers/cpufreq/speedstep-smi.c @@ -375,7 +375,6 @@ static struct cpufreq_driver speedstep_driver = { .exit = speedstep_cpu_exit, .get = speedstep_get, .resume = speedstep_resume, - .owner = THIS_MODULE, .attr = speedstep_attr, }; diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 431a05d4b4c..d568f3975ee 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -179,7 +179,6 @@ __ATTR(_name, 0644, show_##_name, store_##_name) struct cpufreq_driver { - struct module *owner; char name[CPUFREQ_NAME_LEN]; u8 flags; /* -- cgit v1.2.3-70-g09d2 From b9d10be7a8e88fdcb12540387c219cdde87b0795 Mon Sep 17 00:00:00 2001 From: Toshi Kani Date: Mon, 12 Aug 2013 09:45:53 -0600 Subject: ACPI / processor: Acquire writer lock to update CPU maps CPU system maps are protected with reader/writer locks. The reader lock, get_online_cpus(), assures that the maps are not updated while holding the lock. The writer lock, cpu_hotplug_begin(), is used to udpate the cpu maps along with cpu_maps_update_begin(). However, the ACPI processor handler updates the cpu maps without holding the the writer lock. acpi_map_lsapic() is called from acpi_processor_hotadd_init() to update cpu_possible_mask and cpu_present_mask. acpi_unmap_lsapic() is called from acpi_processor_remove() to update cpu_possible_mask. Currently, they are either unprotected or protected with the reader lock, which is not correct. For example, the get_online_cpus() below is supposed to assure that cpu_possible_mask is not changed while the code is iterating with for_each_possible_cpu(). get_online_cpus(); for_each_possible_cpu(cpu) { : } put_online_cpus(); However, this lock has no protection with CPU hotplug since the ACPI processor handler does not use the writer lock when it updates cpu_possible_mask. The reader lock does not serialize within the readers. This patch protects them with the writer lock with cpu_hotplug_begin() along with cpu_maps_update_begin(), which must be held before calling cpu_hotplug_begin(). It also protects arch_register_cpu() / arch_unregister_cpu(), which creates / deletes a sysfs cpu device interface. For this purpose it changes cpu_hotplug_begin() and cpu_hotplug_done() to global and exports them in cpu.h. Signed-off-by: Toshi Kani Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpi_processor.c | 21 ++++++++++++++++----- include/linux/cpu.h | 4 ++++ kernel/cpu.c | 9 +++------ 3 files changed, 23 insertions(+), 11 deletions(-) (limited to 'include') diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c index 5a74a9c1e42..f29e06efa47 100644 --- a/drivers/acpi/acpi_processor.c +++ b/drivers/acpi/acpi_processor.c @@ -178,14 +178,17 @@ static int acpi_processor_hotadd_init(struct acpi_processor *pr) if (ACPI_FAILURE(status) || !(sta & ACPI_STA_DEVICE_PRESENT)) return -ENODEV; + cpu_maps_update_begin(); + cpu_hotplug_begin(); + ret = acpi_map_lsapic(pr->handle, &pr->id); if (ret) - return ret; + goto out; ret = arch_register_cpu(pr->id); if (ret) { acpi_unmap_lsapic(pr->id); - return ret; + goto out; } /* @@ -195,7 +198,11 @@ static int acpi_processor_hotadd_init(struct acpi_processor *pr) */ pr_info("CPU%d has been hot-added\n", pr->id); pr->flags.need_hotplug_init = 1; - return 0; + +out: + cpu_hotplug_done(); + cpu_maps_update_done(); + return ret; } #else static inline int acpi_processor_hotadd_init(struct acpi_processor *pr) @@ -452,11 +459,15 @@ static void acpi_processor_remove(struct acpi_device *device) per_cpu(processor_device_array, pr->id) = NULL; per_cpu(processors, pr->id) = NULL; + cpu_maps_update_begin(); + cpu_hotplug_begin(); + /* Remove the CPU. */ - get_online_cpus(); arch_unregister_cpu(pr->id); acpi_unmap_lsapic(pr->id); - put_online_cpus(); + + cpu_hotplug_done(); + cpu_maps_update_done(); try_offline_node(cpu_to_node(pr->id)); diff --git a/include/linux/cpu.h b/include/linux/cpu.h index ab0eade7303..956c0a16566 100644 --- a/include/linux/cpu.h +++ b/include/linux/cpu.h @@ -172,6 +172,8 @@ extern struct bus_type cpu_subsys; #ifdef CONFIG_HOTPLUG_CPU /* Stop CPUs going up and down. */ +extern void cpu_hotplug_begin(void); +extern void cpu_hotplug_done(void); extern void get_online_cpus(void); extern void put_online_cpus(void); extern void cpu_hotplug_disable(void); @@ -197,6 +199,8 @@ static inline void cpu_hotplug_driver_unlock(void) #else /* CONFIG_HOTPLUG_CPU */ +static inline void cpu_hotplug_begin(void) {} +static inline void cpu_hotplug_done(void) {} #define get_online_cpus() do { } while (0) #define put_online_cpus() do { } while (0) #define cpu_hotplug_disable() do { } while (0) diff --git a/kernel/cpu.c b/kernel/cpu.c index b2b227b8212..d7f07a2da5a 100644 --- a/kernel/cpu.c +++ b/kernel/cpu.c @@ -113,7 +113,7 @@ EXPORT_SYMBOL_GPL(put_online_cpus); * get_online_cpus() not an api which is called all that often. * */ -static void cpu_hotplug_begin(void) +void cpu_hotplug_begin(void) { cpu_hotplug.active_writer = current; @@ -127,7 +127,7 @@ static void cpu_hotplug_begin(void) } } -static void cpu_hotplug_done(void) +void cpu_hotplug_done(void) { cpu_hotplug.active_writer = NULL; mutex_unlock(&cpu_hotplug.lock); @@ -154,10 +154,7 @@ void cpu_hotplug_enable(void) cpu_maps_update_done(); } -#else /* #if CONFIG_HOTPLUG_CPU */ -static void cpu_hotplug_begin(void) {} -static void cpu_hotplug_done(void) {} -#endif /* #else #if CONFIG_HOTPLUG_CPU */ +#endif /* CONFIG_HOTPLUG_CPU */ /* Need to know about CPUs going up/down? */ int __ref register_cpu_notifier(struct notifier_block *nb) -- cgit v1.2.3-70-g09d2 From 2641f540800b47a1b9e9d8ce9d682fc15df088e2 Mon Sep 17 00:00:00 2001 From: Lv Zheng Date: Thu, 8 Aug 2013 15:29:46 +0800 Subject: ACPICA: Fix divergences of the commit - ACPICA: Expose OSI version. The original commit 242b2287cd7f27521c8b54a4101d569e53e7a0ca "ACPICA: expose OSI version" triggers build errors in ACPICA when it is back ported. The patch removes the divergences between Linux and upstream ACPICA resulting from that. Signed-off-by: Lv Zheng Signed-off-by: Bob Moore Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpica/acglobal.h | 7 ++++++- drivers/acpi/acpica/utglobal.c | 1 - include/acpi/actypes.h | 28 +++++++++++++--------------- 3 files changed, 19 insertions(+), 17 deletions(-) (limited to 'include') diff --git a/drivers/acpi/acpica/acglobal.h b/drivers/acpi/acpica/acglobal.h index b8d38117a20..90e846f985f 100644 --- a/drivers/acpi/acpica/acglobal.h +++ b/drivers/acpi/acpica/acglobal.h @@ -138,6 +138,12 @@ u8 ACPI_INIT_GLOBAL(acpi_gbl_disable_auto_repair, FALSE); */ u8 ACPI_INIT_GLOBAL(acpi_gbl_disable_ssdt_table_load, FALSE); +/* + * We keep track of the latest version of Windows that has been requested by + * the BIOS. + */ +u8 ACPI_INIT_GLOBAL(acpi_gbl_osi_data, 0); + /* acpi_gbl_FADT is a local copy of the FADT, converted to a common format. */ struct acpi_table_fadt acpi_gbl_FADT; @@ -285,7 +291,6 @@ ACPI_EXTERN u8 acpi_gbl_debugger_configuration; ACPI_EXTERN u8 acpi_gbl_step_to_next_call; ACPI_EXTERN u8 acpi_gbl_acpi_hardware_present; ACPI_EXTERN u8 acpi_gbl_events_initialized; -ACPI_EXTERN u8 acpi_gbl_osi_data; ACPI_EXTERN struct acpi_interface_info *acpi_gbl_supported_interfaces; ACPI_EXTERN struct acpi_address_range *acpi_gbl_address_range_list[ACPI_ADDRESS_RANGE_MAX]; diff --git a/drivers/acpi/acpica/utglobal.c b/drivers/acpi/acpica/utglobal.c index f736448a860..d6f26bf8a06 100644 --- a/drivers/acpi/acpica/utglobal.c +++ b/drivers/acpi/acpica/utglobal.c @@ -336,7 +336,6 @@ acpi_status acpi_ut_init_globals(void) acpi_gbl_trace_dbg_layer = 0; acpi_gbl_debugger_configuration = DEBUGGER_THREADING; acpi_gbl_db_output_flags = ACPI_DB_CONSOLE_OUTPUT; - acpi_gbl_osi_data = 0; acpi_gbl_osi_mutex = NULL; acpi_gbl_reg_methods_executed = FALSE; diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h index eae55fb7490..b748aefce92 100644 --- a/include/acpi/actypes.h +++ b/include/acpi/actypes.h @@ -1137,7 +1137,19 @@ struct acpi_memory_list { #endif }; -/* Definitions for _OSI support */ +/* Definitions of _OSI support */ + +#define ACPI_VENDOR_STRINGS 0x01 +#define ACPI_FEATURE_STRINGS 0x02 +#define ACPI_ENABLE_INTERFACES 0x00 +#define ACPI_DISABLE_INTERFACES 0x04 + +#define ACPI_DISABLE_ALL_VENDOR_STRINGS (ACPI_DISABLE_INTERFACES | ACPI_VENDOR_STRINGS) +#define ACPI_DISABLE_ALL_FEATURE_STRINGS (ACPI_DISABLE_INTERFACES | ACPI_FEATURE_STRINGS) +#define ACPI_DISABLE_ALL_STRINGS (ACPI_DISABLE_INTERFACES | ACPI_VENDOR_STRINGS | ACPI_FEATURE_STRINGS) +#define ACPI_ENABLE_ALL_VENDOR_STRINGS (ACPI_ENABLE_INTERFACES | ACPI_VENDOR_STRINGS) +#define ACPI_ENABLE_ALL_FEATURE_STRINGS (ACPI_ENABLE_INTERFACES | ACPI_FEATURE_STRINGS) +#define ACPI_ENABLE_ALL_STRINGS (ACPI_ENABLE_INTERFACES | ACPI_VENDOR_STRINGS | ACPI_FEATURE_STRINGS) #define ACPI_OSI_WIN_2000 0x01 #define ACPI_OSI_WIN_XP 0x02 @@ -1152,18 +1164,4 @@ struct acpi_memory_list { #define ACPI_OSI_WIN_7 0x0B #define ACPI_OSI_WIN_8 0x0C -/* _OSI update actions */ - -#define ACPI_VENDOR_STRINGS 0x01 -#define ACPI_FEATURE_STRINGS 0x02 -#define ACPI_ENABLE_INTERFACES 0x00 -#define ACPI_DISABLE_INTERFACES 0x04 - -#define ACPI_DISABLE_ALL_VENDOR_STRINGS (ACPI_DISABLE_INTERFACES | ACPI_VENDOR_STRINGS) -#define ACPI_DISABLE_ALL_FEATURE_STRINGS (ACPI_DISABLE_INTERFACES | ACPI_FEATURE_STRINGS) -#define ACPI_DISABLE_ALL_STRINGS (ACPI_DISABLE_INTERFACES | ACPI_VENDOR_STRINGS | ACPI_FEATURE_STRINGS) -#define ACPI_ENABLE_ALL_VENDOR_STRINGS (ACPI_ENABLE_INTERFACES | ACPI_VENDOR_STRINGS) -#define ACPI_ENABLE_ALL_FEATURE_STRINGS (ACPI_ENABLE_INTERFACES | ACPI_FEATURE_STRINGS) -#define ACPI_ENABLE_ALL_STRINGS (ACPI_ENABLE_INTERFACES | ACPI_VENDOR_STRINGS | ACPI_FEATURE_STRINGS) - #endif /* __ACTYPES_H__ */ -- cgit v1.2.3-70-g09d2 From 4ef17507834d19ba4fc24c4c1c61e8f68df356a6 Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Thu, 8 Aug 2013 15:30:05 +0800 Subject: ACPICA: Update names for walk_namespace callbacks to clarify usage. Use of "preorder" and "postorder" was incorrect. The callbacks are simply invoked during tree ascent and descent during the depth-first walk. Signed-off-by: Bob Moore Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpica/acnamesp.h | 4 ++-- drivers/acpi/acpica/nswalk.c | 26 +++++++++++++------------- drivers/acpi/acpica/nsxfeval.c | 16 ++++++++-------- include/acpi/acpixf.h | 4 ++-- 4 files changed, 25 insertions(+), 25 deletions(-) (limited to 'include') diff --git a/drivers/acpi/acpica/acnamesp.h b/drivers/acpi/acpica/acnamesp.h index b83dc32a5ae..40b04bd5579 100644 --- a/drivers/acpi/acpica/acnamesp.h +++ b/drivers/acpi/acpica/acnamesp.h @@ -104,8 +104,8 @@ acpi_ns_walk_namespace(acpi_object_type type, acpi_handle start_object, u32 max_depth, u32 flags, - acpi_walk_callback pre_order_visit, - acpi_walk_callback post_order_visit, + acpi_walk_callback descending_callback, + acpi_walk_callback ascending_callback, void *context, void **return_value); struct acpi_namespace_node *acpi_ns_get_next_node(struct acpi_namespace_node diff --git a/drivers/acpi/acpica/nswalk.c b/drivers/acpi/acpica/nswalk.c index e70911a9e44..e81f15ef659 100644 --- a/drivers/acpi/acpica/nswalk.c +++ b/drivers/acpi/acpica/nswalk.c @@ -156,9 +156,9 @@ struct acpi_namespace_node *acpi_ns_get_next_node_typed(acpi_object_type type, * max_depth - Depth to which search is to reach * flags - Whether to unlock the NS before invoking * the callback routine - * pre_order_visit - Called during tree pre-order visit + * descending_callback - Called during tree descent * when an object of "Type" is found - * post_order_visit - Called during tree post-order visit + * ascending_callback - Called during tree ascent * when an object of "Type" is found * context - Passed to user function(s) above * return_value - from the user_function if terminated @@ -185,8 +185,8 @@ acpi_ns_walk_namespace(acpi_object_type type, acpi_handle start_node, u32 max_depth, u32 flags, - acpi_walk_callback pre_order_visit, - acpi_walk_callback post_order_visit, + acpi_walk_callback descending_callback, + acpi_walk_callback ascending_callback, void *context, void **return_value) { acpi_status status; @@ -255,22 +255,22 @@ acpi_ns_walk_namespace(acpi_object_type type, } /* - * Invoke the user function, either pre-order or post-order + * Invoke the user function, either descending, ascending, * or both. */ if (!node_previously_visited) { - if (pre_order_visit) { + if (descending_callback) { status = - pre_order_visit(child_node, level, - context, - return_value); + descending_callback(child_node, + level, context, + return_value); } } else { - if (post_order_visit) { + if (ascending_callback) { status = - post_order_visit(child_node, level, - context, - return_value); + ascending_callback(child_node, + level, context, + return_value); } } diff --git a/drivers/acpi/acpica/nsxfeval.c b/drivers/acpi/acpica/nsxfeval.c index f553cfdb71d..b38b4b07f86 100644 --- a/drivers/acpi/acpica/nsxfeval.c +++ b/drivers/acpi/acpica/nsxfeval.c @@ -533,9 +533,9 @@ static void acpi_ns_resolve_references(struct acpi_evaluate_info *info) * PARAMETERS: type - acpi_object_type to search for * start_object - Handle in namespace where search begins * max_depth - Depth to which search is to reach - * pre_order_visit - Called during tree pre-order visit + * descending_callback - Called during tree descent * when an object of "Type" is found - * post_order_visit - Called during tree post-order visit + * ascending_callback - Called during tree ascent * when an object of "Type" is found * context - Passed to user function(s) above * return_value - Location where return value of @@ -563,8 +563,8 @@ acpi_status acpi_walk_namespace(acpi_object_type type, acpi_handle start_object, u32 max_depth, - acpi_walk_callback pre_order_visit, - acpi_walk_callback post_order_visit, + acpi_walk_callback descending_callback, + acpi_walk_callback ascending_callback, void *context, void **return_value) { acpi_status status; @@ -574,7 +574,7 @@ acpi_walk_namespace(acpi_object_type type, /* Parameter validation */ if ((type > ACPI_TYPE_LOCAL_MAX) || - (!max_depth) || (!pre_order_visit && !post_order_visit)) { + (!max_depth) || (!descending_callback && !ascending_callback)) { return_ACPI_STATUS(AE_BAD_PARAMETER); } @@ -606,9 +606,9 @@ acpi_walk_namespace(acpi_object_type type, } status = acpi_ns_walk_namespace(type, start_object, max_depth, - ACPI_NS_WALK_UNLOCK, pre_order_visit, - post_order_visit, context, - return_value); + ACPI_NS_WALK_UNLOCK, + descending_callback, ascending_callback, + context, return_value); (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h index 0dd03f226a6..e53f16a0723 100644 --- a/include/acpi/acpixf.h +++ b/include/acpi/acpixf.h @@ -212,8 +212,8 @@ acpi_status acpi_walk_namespace(acpi_object_type type, acpi_handle start_object, u32 max_depth, - acpi_walk_callback pre_order_visit, - acpi_walk_callback post_order_visit, + acpi_walk_callback descending_callback, + acpi_walk_callback ascending_callback, void *context, void **return_value); acpi_status -- cgit v1.2.3-70-g09d2 From 36b99b22877bd25162239f1b00477ee6ae2d01ee Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Thu, 8 Aug 2013 15:30:11 +0800 Subject: ACPICA: Update version to 20130725. Version 20130725. Signed-off-by: Bob Moore Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki --- include/acpi/acpixf.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h index e53f16a0723..85bfdbe1780 100644 --- a/include/acpi/acpixf.h +++ b/include/acpi/acpixf.h @@ -46,7 +46,7 @@ /* Current ACPICA subsystem version in YYYYMMDD format */ -#define ACPI_CA_VERSION 0x20130626 +#define ACPI_CA_VERSION 0x20130725 #include #include -- cgit v1.2.3-70-g09d2 From 183912d352a242a276a7877852f107459a13aff9 Mon Sep 17 00:00:00 2001 From: Sudeep KarkadaNagesha Date: Thu, 15 Aug 2013 14:01:40 +0100 Subject: of: move of_get_cpu_node implementation to DT core library This patch moves the generalized implementation of of_get_cpu_node from PowerPC to DT core library, thereby adding support for retrieving cpu node for a given logical cpu index on any architecture. The CPU subsystem can now use this function to assign of_node in the cpu device while registering CPUs. It is recommended to use these helper function only in pre-SMP/early initialisation stages to retrieve CPU device node pointers in logical ordering. Once the cpu devices are registered, it can be retrieved easily from cpu device of_node which avoids unnecessary parsing and matching. Cc: Benjamin Herrenschmidt Cc: Grant Likely Acked-by: Rob Herring Signed-off-by: Sudeep KarkadaNagesha --- arch/powerpc/include/asm/prom.h | 3 -- arch/powerpc/kernel/prom.c | 57 ------------------------- drivers/of/base.c | 95 +++++++++++++++++++++++++++++++++++++++++ include/linux/cpu.h | 1 + include/linux/of.h | 7 +++ 5 files changed, 103 insertions(+), 60 deletions(-) (limited to 'include') diff --git a/arch/powerpc/include/asm/prom.h b/arch/powerpc/include/asm/prom.h index bc2da154f68..ac204e02292 100644 --- a/arch/powerpc/include/asm/prom.h +++ b/arch/powerpc/include/asm/prom.h @@ -43,9 +43,6 @@ void of_parse_dma_window(struct device_node *dn, const void *dma_window_prop, extern void kdump_move_device_tree(void); -/* CPU OF node matching */ -struct device_node *of_get_cpu_node(int cpu, unsigned int *thread); - /* cache lookup */ struct device_node *of_find_next_cache_node(struct device_node *np); diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c index f7b8c0be982..1c14cd4a5e0 100644 --- a/arch/powerpc/kernel/prom.c +++ b/arch/powerpc/kernel/prom.c @@ -870,63 +870,6 @@ bool arch_match_cpu_phys_id(int cpu, u64 phys_id) return (int)phys_id == get_hard_smp_processor_id(cpu); } -static bool __of_find_n_match_cpu_property(struct device_node *cpun, - const char *prop_name, int cpu, unsigned int *thread) -{ - const __be32 *cell; - int ac, prop_len, tid; - u64 hwid; - - ac = of_n_addr_cells(cpun); - cell = of_get_property(cpun, prop_name, &prop_len); - if (!cell) - return false; - prop_len /= sizeof(*cell); - for (tid = 0; tid < prop_len; tid++) { - hwid = of_read_number(cell, ac); - if (arch_match_cpu_phys_id(cpu, hwid)) { - if (thread) - *thread = tid; - return true; - } - cell += ac; - } - return false; -} - -/* Find the device node for a given logical cpu number, also returns the cpu - * local thread number (index in ibm,interrupt-server#s) if relevant and - * asked for (non NULL) - */ -struct device_node *of_get_cpu_node(int cpu, unsigned int *thread) -{ - struct device_node *cpun, *cpus; - - cpus = of_find_node_by_path("/cpus"); - if (!cpus) { - pr_warn("Missing cpus node, bailing out\n"); - return NULL; - } - - for_each_child_of_node(cpus, cpun) { - if (of_node_cmp(cpun->type, "cpu")) - continue; - - /* Check for non-standard "ibm,ppc-interrupt-server#s" property - * for thread ids on PowerPC. If it doesn't exist fallback to - * standard "reg" property. - */ - if (__of_find_n_match_cpu_property(cpun, - "ibm,ppc-interrupt-server#s", cpu, thread)) - return cpun; - - if (__of_find_n_match_cpu_property(cpun, "reg", cpu, thread)) - return cpun; - } - return NULL; -} -EXPORT_SYMBOL(of_get_cpu_node); - #if defined(CONFIG_DEBUG_FS) && defined(DEBUG) static struct debugfs_blob_wrapper flat_dt_blob; diff --git a/drivers/of/base.c b/drivers/of/base.c index 5c5427918eb..605afa9fbe5 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -18,6 +18,7 @@ * 2 of the License, or (at your option) any later version. */ #include +#include #include #include #include @@ -230,6 +231,100 @@ const void *of_get_property(const struct device_node *np, const char *name, } EXPORT_SYMBOL(of_get_property); +/* + * arch_match_cpu_phys_id - Match the given logical CPU and physical id + * + * @cpu: logical cpu index of a core/thread + * @phys_id: physical identifier of a core/thread + * + * CPU logical to physical index mapping is architecture specific. + * However this __weak function provides a default match of physical + * id to logical cpu index. phys_id provided here is usually values read + * from the device tree which must match the hardware internal registers. + * + * Returns true if the physical identifier and the logical cpu index + * correspond to the same core/thread, false otherwise. + */ +bool __weak arch_match_cpu_phys_id(int cpu, u64 phys_id) +{ + return (u32)phys_id == cpu; +} + +/** + * Checks if the given "prop_name" property holds the physical id of the + * core/thread corresponding to the logical cpu 'cpu'. If 'thread' is not + * NULL, local thread number within the core is returned in it. + */ +static bool __of_find_n_match_cpu_property(struct device_node *cpun, + const char *prop_name, int cpu, unsigned int *thread) +{ + const __be32 *cell; + int ac, prop_len, tid; + u64 hwid; + + ac = of_n_addr_cells(cpun); + cell = of_get_property(cpun, prop_name, &prop_len); + if (!cell) + return false; + prop_len /= sizeof(*cell); + for (tid = 0; tid < prop_len; tid++) { + hwid = of_read_number(cell, ac); + if (arch_match_cpu_phys_id(cpu, hwid)) { + if (thread) + *thread = tid; + return true; + } + cell += ac; + } + return false; +} + +/** + * of_get_cpu_node - Get device node associated with the given logical CPU + * + * @cpu: CPU number(logical index) for which device node is required + * @thread: if not NULL, local thread number within the physical core is + * returned + * + * The main purpose of this function is to retrieve the device node for the + * given logical CPU index. It should be used to initialize the of_node in + * cpu device. Once of_node in cpu device is populated, all the further + * references can use that instead. + * + * CPU logical to physical index mapping is architecture specific and is built + * before booting secondary cores. This function uses arch_match_cpu_phys_id + * which can be overridden by architecture specific implementation. + * + * Returns a node pointer for the logical cpu if found, else NULL. + */ +struct device_node *of_get_cpu_node(int cpu, unsigned int *thread) +{ + struct device_node *cpun, *cpus; + + cpus = of_find_node_by_path("/cpus"); + if (!cpus) { + pr_warn("Missing cpus node, bailing out\n"); + return NULL; + } + + for_each_child_of_node(cpus, cpun) { + if (of_node_cmp(cpun->type, "cpu")) + continue; + /* Check for non-standard "ibm,ppc-interrupt-server#s" property + * for thread ids on PowerPC. If it doesn't exist fallback to + * standard "reg" property. + */ + if (IS_ENABLED(CONFIG_PPC) && + __of_find_n_match_cpu_property(cpun, + "ibm,ppc-interrupt-server#s", cpu, thread)) + return cpun; + if (__of_find_n_match_cpu_property(cpun, "reg", cpu, thread)) + return cpun; + } + return NULL; +} +EXPORT_SYMBOL(of_get_cpu_node); + /** Checks if the given "compat" string matches one of the strings in * the device's "compatible" property */ diff --git a/include/linux/cpu.h b/include/linux/cpu.h index ab0eade7303..3dfed2b9ae2 100644 --- a/include/linux/cpu.h +++ b/include/linux/cpu.h @@ -28,6 +28,7 @@ struct cpu { extern int register_cpu(struct cpu *cpu, int num); extern struct device *get_cpu_device(unsigned cpu); extern bool cpu_is_hotpluggable(unsigned cpu); +extern bool arch_match_cpu_phys_id(int cpu, u64 phys_id); extern int cpu_add_dev_attr(struct device_attribute *attr); extern void cpu_remove_dev_attr(struct device_attribute *attr); diff --git a/include/linux/of.h b/include/linux/of.h index 1fd08ca2310..c0bb2f18804 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -266,6 +266,7 @@ extern int of_device_is_available(const struct device_node *device); extern const void *of_get_property(const struct device_node *node, const char *name, int *lenp); +extern struct device_node *of_get_cpu_node(int cpu, unsigned int *thread); #define for_each_property_of_node(dn, pp) \ for (pp = dn->properties; pp != NULL; pp = pp->next) @@ -459,6 +460,12 @@ static inline const void *of_get_property(const struct device_node *node, return NULL; } +static inline struct device_node *of_get_cpu_node(int cpu, + unsigned int *thread) +{ + return NULL; +} + static inline int of_property_read_u64(const struct device_node *np, const char *propname, u64 *out_value) { -- cgit v1.2.3-70-g09d2 From bd00860e960e52658cebfd65eeb4748ed6ff039f Mon Sep 17 00:00:00 2001 From: Sudeep KarkadaNagesha Date: Thu, 18 Jul 2013 11:22:04 +0100 Subject: of/device: add helper to get cpu device node from logical cpu index Multiple drivers need to get the cpu device node from the cpu logical index and then access the of_node. This patch adds helper function to fetch the device node directly. Acked-by: Rob Herring Signed-off-by: Sudeep KarkadaNagesha --- include/linux/of_device.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'include') diff --git a/include/linux/of_device.h b/include/linux/of_device.h index 9d27475feec..82ce324fdce 100644 --- a/include/linux/of_device.h +++ b/include/linux/of_device.h @@ -1,6 +1,7 @@ #ifndef _LINUX_OF_DEVICE_H #define _LINUX_OF_DEVICE_H +#include #include #include /* temporary until merge */ @@ -43,6 +44,15 @@ static inline void of_device_node_put(struct device *dev) of_node_put(dev->of_node); } +static inline struct device_node *of_cpu_device_node_get(int cpu) +{ + struct device *cpu_dev; + cpu_dev = get_cpu_device(cpu); + if (!cpu_dev) + return NULL; + return of_node_get(cpu_dev->of_node); +} + #else /* CONFIG_OF */ static inline int of_driver_match_device(struct device *dev, @@ -67,6 +77,11 @@ static inline const struct of_device_id *of_match_device( { return NULL; } + +static inline struct device_node *of_cpu_device_node_get(int cpu) +{ + return NULL; +} #endif /* CONFIG_OF */ #endif /* _LINUX_OF_DEVICE_H */ -- cgit v1.2.3-70-g09d2 From 5e33bc4165f3edd558d9633002465a95230effc1 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Wed, 28 Aug 2013 21:41:01 +0200 Subject: driver core / ACPI: Avoid device hot remove locking issues device_hotplug_lock is held around the acpi_bus_trim() call in acpi_scan_hot_remove() which generally removes devices (it removes ACPI device objects at least, but it may also remove "physical" device objects through .detach() callbacks of ACPI scan handlers). Thus, potentially, device sysfs attributes are removed under that lock and to remove those attributes it is necessary to hold the s_active references of their directory entries for writing. On the other hand, the execution of a .show() or .store() callback from a sysfs attribute is carried out with that attribute's s_active reference held for reading. Consequently, if any device sysfs attribute that may be removed from within acpi_scan_hot_remove() through acpi_bus_trim() has a .store() or .show() callback which acquires device_hotplug_lock, the execution of that callback may deadlock with the removal of the attribute. [Unfortunately, the "online" device attribute of CPUs and memory blocks is one of them.] To avoid such deadlocks, make all of the sysfs attribute callbacks that need to lock device hotplug, for example store_online(), use a special function, lock_device_hotplug_sysfs(), to lock device hotplug and return the result of that function immediately if it is not zero. This will cause the s_active reference of the directory entry in question to be released and the syscall to be restarted if device_hotplug_lock cannot be acquired. [show_online() actually doesn't need to lock device hotplug, but it is useful to serialize it with respect to device_offline() and device_online() for the same device (in case user space attempts to run them concurrently) which can be done with the help of device_lock().] Reported-by: Yasuaki Ishimatsu Reported-and-tested-by: Gu Zheng Suggested-by: Tejun Heo Signed-off-by: Rafael J. Wysocki Acked-by: Greg Kroah-Hartman Acked-by: Toshi Kani --- drivers/base/core.c | 43 ++++++++++++++++++++++++++++--------------- drivers/base/memory.c | 4 +++- include/linux/device.h | 1 + 3 files changed, 32 insertions(+), 16 deletions(-) (limited to 'include') diff --git a/drivers/base/core.c b/drivers/base/core.c index 8856d74545d..ac419a15fcd 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -49,6 +49,28 @@ static struct kobject *dev_kobj; struct kobject *sysfs_dev_char_kobj; struct kobject *sysfs_dev_block_kobj; +static DEFINE_MUTEX(device_hotplug_lock); + +void lock_device_hotplug(void) +{ + mutex_lock(&device_hotplug_lock); +} + +void unlock_device_hotplug(void) +{ + mutex_unlock(&device_hotplug_lock); +} + +int lock_device_hotplug_sysfs(void) +{ + if (mutex_trylock(&device_hotplug_lock)) + return 0; + + /* Avoid busy looping (5 ms of sleep should do). */ + msleep(5); + return restart_syscall(); +} + #ifdef CONFIG_BLOCK static inline int device_is_not_partition(struct device *dev) { @@ -408,9 +430,9 @@ static ssize_t show_online(struct device *dev, struct device_attribute *attr, { bool val; - lock_device_hotplug(); + device_lock(dev); val = !dev->offline; - unlock_device_hotplug(); + device_unlock(dev); return sprintf(buf, "%u\n", val); } @@ -424,7 +446,10 @@ static ssize_t store_online(struct device *dev, struct device_attribute *attr, if (ret < 0) return ret; - lock_device_hotplug(); + ret = lock_device_hotplug_sysfs(); + if (ret) + return ret; + ret = val ? device_online(dev) : device_offline(dev); unlock_device_hotplug(); return ret < 0 ? ret : count; @@ -1479,18 +1504,6 @@ EXPORT_SYMBOL_GPL(put_device); EXPORT_SYMBOL_GPL(device_create_file); EXPORT_SYMBOL_GPL(device_remove_file); -static DEFINE_MUTEX(device_hotplug_lock); - -void lock_device_hotplug(void) -{ - mutex_lock(&device_hotplug_lock); -} - -void unlock_device_hotplug(void) -{ - mutex_unlock(&device_hotplug_lock); -} - static int device_check_offline(struct device *dev, void *not_used) { int ret; diff --git a/drivers/base/memory.c b/drivers/base/memory.c index 2b7813ec6d0..6f4c99ff1ce 100644 --- a/drivers/base/memory.c +++ b/drivers/base/memory.c @@ -351,7 +351,9 @@ store_mem_state(struct device *dev, mem = container_of(dev, struct memory_block, dev); - lock_device_hotplug(); + ret = lock_device_hotplug_sysfs(); + if (ret) + return ret; if (!strncmp(buf, "online_kernel", min_t(int, count, 13))) { offline = false; diff --git a/include/linux/device.h b/include/linux/device.h index 22b546a5859..545a0428512 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -895,6 +895,7 @@ static inline bool device_supports_offline(struct device *dev) extern void lock_device_hotplug(void); extern void unlock_device_hotplug(void); +extern int lock_device_hotplug_sysfs(void); extern int device_offline(struct device *dev); extern int device_online(struct device *dev); /* -- cgit v1.2.3-70-g09d2 From f943db40c29f3c82a56956e9ca36f21d6d855db9 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Wed, 28 Aug 2013 21:41:07 +0200 Subject: ACPI / hotplug: Remove containers synchronously The current protocol for handling hot remove of containers is very fragile and causes acpi_eject_store() to acquire acpi_scan_lock which may deadlock with the removal of the device that it is called for (the reason is that device sysfs attributes cannot be removed while their callbacks are being executed and ACPI device objects are removed under acpi_scan_lock). The problem is related to the fact that containers are handled by acpi_bus_device_eject() in a special way, which is to emit an offline uevent instead of just removing the container. Then, user space is expected to handle that uevent and use the container's "eject" attribute to actually remove it. That is fragile, because user space may fail to complete the ejection (for example, by not using the container's "eject" attribute at all) leaving the BIOS kind of in a limbo. Moreover, if the eject event is not signaled for a container itself, but for its parent device object (or generally, for an ancestor above it in the ACPI namespace), the container will be removed straight away without doing that whole dance. For this reason, modify acpi_bus_device_eject() to remove containers synchronously like any other objects (user space will get its uevent anyway in case it does some other things in response to it) and remove the eject_pending ACPI device flag that is not used any more. This way acpi_eject_store() doesn't have a reason to acquire acpi_scan_lock any more and one possible deadlock scenario goes away (plus the code is simplified a bit). Reported-and-tested-by: Gu Zheng Signed-off-by: Rafael J. Wysocki Acked-by: Greg Kroah-Hartman Acked-by: Toshi Kani --- drivers/acpi/scan.c | 49 +++++++++++++++---------------------------------- include/acpi/acpi_bus.h | 3 +-- 2 files changed, 16 insertions(+), 36 deletions(-) (limited to 'include') diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 8a46c924eff..e2f6d9dbdf0 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -307,6 +307,7 @@ static void acpi_bus_device_eject(void *context) struct acpi_device *device = NULL; struct acpi_scan_handler *handler; u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE; + int error; mutex_lock(&acpi_scan_lock); @@ -321,17 +322,13 @@ static void acpi_bus_device_eject(void *context) } acpi_evaluate_hotplug_ost(handle, ACPI_NOTIFY_EJECT_REQUEST, ACPI_OST_SC_EJECT_IN_PROGRESS, NULL); - if (handler->hotplug.mode == AHM_CONTAINER) { - device->flags.eject_pending = true; + if (handler->hotplug.mode == AHM_CONTAINER) kobject_uevent(&device->dev.kobj, KOBJ_OFFLINE); - } else { - int error; - get_device(&device->dev); - error = acpi_scan_hot_remove(device); - if (error) - goto err_out; - } + get_device(&device->dev); + error = acpi_scan_hot_remove(device); + if (error) + goto err_out; out: mutex_unlock(&acpi_scan_lock); @@ -516,7 +513,6 @@ acpi_eject_store(struct device *d, struct device_attribute *attr, struct acpi_eject_event *ej_event; acpi_object_type not_used; acpi_status status; - u32 ost_source; int ret; if (!count || buf[0] != '1') @@ -530,43 +526,28 @@ acpi_eject_store(struct device *d, struct device_attribute *attr, if (ACPI_FAILURE(status) || !acpi_device->flags.ejectable) return -ENODEV; - mutex_lock(&acpi_scan_lock); - - if (acpi_device->flags.eject_pending) { - /* ACPI eject notification event. */ - ost_source = ACPI_NOTIFY_EJECT_REQUEST; - acpi_device->flags.eject_pending = 0; - } else { - /* Eject initiated by user space. */ - ost_source = ACPI_OST_EC_OSPM_EJECT; - } ej_event = kmalloc(sizeof(*ej_event), GFP_KERNEL); if (!ej_event) { ret = -ENOMEM; goto err_out; } - acpi_evaluate_hotplug_ost(acpi_device->handle, ost_source, + acpi_evaluate_hotplug_ost(acpi_device->handle, ACPI_OST_EC_OSPM_EJECT, ACPI_OST_SC_EJECT_IN_PROGRESS, NULL); ej_event->device = acpi_device; - ej_event->event = ost_source; + ej_event->event = ACPI_OST_EC_OSPM_EJECT; get_device(&acpi_device->dev); status = acpi_os_hotplug_execute(acpi_bus_hot_remove_device, ej_event); - if (ACPI_FAILURE(status)) { - put_device(&acpi_device->dev); - kfree(ej_event); - ret = status == AE_NO_MEMORY ? -ENOMEM : -EAGAIN; - goto err_out; - } - ret = count; + if (ACPI_SUCCESS(status)) + return count; - out: - mutex_unlock(&acpi_scan_lock); - return ret; + put_device(&acpi_device->dev); + kfree(ej_event); + ret = status == AE_NO_MEMORY ? -ENOMEM : -EAGAIN; err_out: - acpi_evaluate_hotplug_ost(acpi_device->handle, ost_source, + acpi_evaluate_hotplug_ost(acpi_device->handle, ACPI_OST_EC_OSPM_EJECT, ACPI_OST_SC_NON_SPECIFIC_FAILURE, NULL); - goto out; + return ret; } static DEVICE_ATTR(eject, 0200, NULL, acpi_eject_store); diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index 94383a70c1a..6ff9510718d 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -157,9 +157,8 @@ struct acpi_device_flags { u32 removable:1; u32 ejectable:1; u32 power_manageable:1; - u32 eject_pending:1; u32 match_driver:1; - u32 reserved:26; + u32 reserved:27; }; /* File System */ -- cgit v1.2.3-70-g09d2