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authorLinus Torvalds <torvalds@linux-foundation.org>2008-01-25 08:34:42 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2008-01-25 08:35:13 -0800
commitdf8dc74e8a383eaf2d9b44b80a71ec6f0e52b42e (patch)
treebc3799a43e8b94fa84b32e37b1c124d5e4868f50 /drivers/base/base.h
parent556a169dab38b5100df6f4a45b655dddd3db94c1 (diff)
parent4a3ad20ccd8f4d2a0535cf98fa83f7b561ba59a9 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6
This can be broken down into these major areas: - Documentation updates (language translations and fixes, as well as kobject and kset documenatation updates.) - major kset/kobject/ktype rework and fixes. This cleans up the kset and kobject and ktype relationship and architecture, making sense of things now, and good documenation and samples are provided for others to use. Also the attributes for kobjects are much easier to handle now. This cleaned up a LOT of code all through the kernel, making kobjects easier to use if you want to. - struct bus_type has been reworked to now handle the lifetime rules properly, as the kobject is properly dynamic. - struct driver has also been reworked, and now the lifetime issues are resolved. - the block subsystem has been converted to use struct device now, and not "raw" kobjects. This patch has been in the -mm tree for over a year now, and finally all the issues are worked out with it. Older distros now properly work with new kernels, and no userspace updates are needed at all. - nozomi driver is added. This has also been in -mm for a long time, and many people have asked for it to go in. It is now in good enough shape to do so. - lots of class_device conversions to use struct device instead. The tree is almost all cleaned up now, only SCSI and IB is the remaining code to fix up... * git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6: (196 commits) Driver core: coding style fixes Kobject: fix coding style issues in kobject c files Kobject: fix coding style issues in kobject.h Driver core: fix coding style issues in device.h spi: use class iteration api scsi: use class iteration api rtc: use class iteration api power supply : use class iteration api ieee1394: use class iteration api Driver Core: add class iteration api Driver core: Cleanup get_device_parent() in device_add() and device_move() UIO: constify function pointer tables Driver Core: constify the name passed to platform_device_register_simple driver core: fix build with SYSFS=n sysfs: make SYSFS_DEPRECATED depend on SYSFS Driver core: use LIST_HEAD instead of call to INIT_LIST_HEAD in __init kobject: add sample code for how to use ksets/ktypes/kobjects kobject: add sample code for how to use kobjects in a simple manner. kobject: update the kobject/kset documentation kobject: remove old, outdated documentation. ...
Diffstat (limited to 'drivers/base/base.h')
-rw-r--r--drivers/base/base.h64
1 files changed, 54 insertions, 10 deletions
diff --git a/drivers/base/base.h b/drivers/base/base.h
index 10b2fb6c9ce..c0444146c09 100644
--- a/drivers/base/base.h
+++ b/drivers/base/base.h
@@ -1,6 +1,42 @@
-/* initialisation functions */
+/**
+ * struct bus_type_private - structure to hold the private to the driver core portions of the bus_type structure.
+ *
+ * @subsys - the struct kset that defines this bus. This is the main kobject
+ * @drivers_kset - the list of drivers associated with this bus
+ * @devices_kset - the list of devices associated with this bus
+ * @klist_devices - the klist to iterate over the @devices_kset
+ * @klist_drivers - the klist to iterate over the @drivers_kset
+ * @bus_notifier - the bus notifier list for anything that cares about things
+ * on this bus.
+ * @bus - pointer back to the struct bus_type that this structure is associated
+ * with.
+ *
+ * This structure is the one that is the actual kobject allowing struct
+ * bus_type to be statically allocated safely. Nothing outside of the driver
+ * core should ever touch these fields.
+ */
+struct bus_type_private {
+ struct kset subsys;
+ struct kset *drivers_kset;
+ struct kset *devices_kset;
+ struct klist klist_devices;
+ struct klist klist_drivers;
+ struct blocking_notifier_head bus_notifier;
+ unsigned int drivers_autoprobe:1;
+ struct bus_type *bus;
+};
+
+struct driver_private {
+ struct kobject kobj;
+ struct klist klist_devices;
+ struct klist_node knode_bus;
+ struct module_kobject *mkobj;
+ struct device_driver *driver;
+};
+#define to_driver(obj) container_of(obj, struct driver_private, kobj)
+/* initialisation functions */
extern int devices_init(void);
extern int buses_init(void);
extern int classes_init(void);
@@ -13,17 +49,16 @@ static inline int hypervisor_init(void) { return 0; }
extern int platform_bus_init(void);
extern int system_bus_init(void);
extern int cpu_dev_init(void);
-extern int attribute_container_init(void);
-extern int bus_add_device(struct device * dev);
-extern void bus_attach_device(struct device * dev);
-extern void bus_remove_device(struct device * dev);
+extern int bus_add_device(struct device *dev);
+extern void bus_attach_device(struct device *dev);
+extern void bus_remove_device(struct device *dev);
-extern int bus_add_driver(struct device_driver *);
-extern void bus_remove_driver(struct device_driver *);
+extern int bus_add_driver(struct device_driver *drv);
+extern void bus_remove_driver(struct device_driver *drv);
-extern void driver_detach(struct device_driver * drv);
-extern int driver_probe_device(struct device_driver *, struct device *);
+extern void driver_detach(struct device_driver *drv);
+extern int driver_probe_device(struct device_driver *drv, struct device *dev);
extern void sysdev_shutdown(void);
extern int sysdev_suspend(pm_message_t state);
@@ -44,4 +79,13 @@ extern char *make_class_name(const char *name, struct kobject *kobj);
extern int devres_release_all(struct device *dev);
-extern struct kset devices_subsys;
+extern struct kset *devices_kset;
+
+#if defined(CONFIG_MODULES) && defined(CONFIG_SYSFS)
+extern void module_add_driver(struct module *mod, struct device_driver *drv);
+extern void module_remove_driver(struct device_driver *drv);
+#else
+static inline void module_add_driver(struct module *mod,
+ struct device_driver *drv) { }
+static inline void module_remove_driver(struct device_driver *drv) { }
+#endif