diff options
Diffstat (limited to 'arch/s390/appldata/appldata_base.c')
| -rw-r--r-- | arch/s390/appldata/appldata_base.c | 595 |
1 files changed, 195 insertions, 400 deletions
diff --git a/arch/s390/appldata/appldata_base.c b/arch/s390/appldata/appldata_base.c index c067435bae4..47c8630c93c 100644 --- a/arch/s390/appldata/appldata_base.c +++ b/arch/s390/appldata/appldata_base.c @@ -1,150 +1,106 @@ /* - * arch/s390/appldata/appldata_base.c - * * Base infrastructure for Linux-z/VM Monitor Stream, Stage 1. * Exports appldata_register_ops() and appldata_unregister_ops() for the * data gathering modules. * - * Copyright (C) 2003 IBM Corporation, IBM Deutschland Entwicklung GmbH. + * Copyright IBM Corp. 2003, 2009 * - * Author: Gerald Schaefer <geraldsc@de.ibm.com> + * Author: Gerald Schaefer <gerald.schaefer@de.ibm.com> */ -#include <linux/config.h> +#define KMSG_COMPONENT "appldata" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/module.h> #include <linux/init.h> #include <linux/slab.h> #include <linux/errno.h> -#include <asm/uaccess.h> -#include <asm/io.h> -#include <asm/smp.h> #include <linux/interrupt.h> #include <linux/proc_fs.h> -#include <linux/page-flags.h> +#include <linux/mm.h> #include <linux/swap.h> #include <linux/pagemap.h> #include <linux/sysctl.h> -#include <asm/timer.h> -//#include <linux/kernel_stat.h> #include <linux/notifier.h> #include <linux/cpu.h> #include <linux/workqueue.h> +#include <linux/suspend.h> +#include <linux/platform_device.h> +#include <asm/appldata.h> +#include <asm/vtimer.h> +#include <asm/uaccess.h> +#include <asm/io.h> +#include <asm/smp.h> #include "appldata.h" -#define MY_PRINT_NAME "appldata" /* for debug messages, etc. */ #define APPLDATA_CPU_INTERVAL 10000 /* default (CPU) time for sampling interval in milliseconds */ #define TOD_MICRO 0x01000 /* nr. of TOD clock units for 1 microsecond */ -#ifndef CONFIG_ARCH_S390X - -#define APPLDATA_START_INTERVAL_REC 0x00 /* Function codes for */ -#define APPLDATA_STOP_REC 0x01 /* DIAG 0xDC */ -#define APPLDATA_GEN_EVENT_RECORD 0x02 -#define APPLDATA_START_CONFIG_REC 0x03 - -#else - -#define APPLDATA_START_INTERVAL_REC 0x80 -#define APPLDATA_STOP_REC 0x81 -#define APPLDATA_GEN_EVENT_RECORD 0x82 -#define APPLDATA_START_CONFIG_REC 0x83 - -#endif /* CONFIG_ARCH_S390X */ - -/* - * Parameter list for DIAGNOSE X'DC' - */ -#ifndef CONFIG_ARCH_S390X -struct appldata_parameter_list { - u16 diag; /* The DIAGNOSE code X'00DC' */ - u8 function; /* The function code for the DIAGNOSE */ - u8 parlist_length; /* Length of the parameter list */ - u32 product_id_addr; /* Address of the 16-byte product ID */ - u16 reserved; - u16 buffer_length; /* Length of the application data buffer */ - u32 buffer_addr; /* Address of the application data buffer */ -}; -#else -struct appldata_parameter_list { - u16 diag; - u8 function; - u8 parlist_length; - u32 unused01; - u16 reserved; - u16 buffer_length; - u32 unused02; - u64 product_id_addr; - u64 buffer_addr; -}; -#endif /* CONFIG_ARCH_S390X */ +static struct platform_device *appldata_pdev; /* * /proc entries (sysctl) */ static const char appldata_proc_name[APPLDATA_PROC_NAME_LENGTH] = "appldata"; -static int appldata_timer_handler(ctl_table *ctl, int write, struct file *filp, +static int appldata_timer_handler(struct ctl_table *ctl, int write, void __user *buffer, size_t *lenp, loff_t *ppos); -static int appldata_interval_handler(ctl_table *ctl, int write, - struct file *filp, +static int appldata_interval_handler(struct ctl_table *ctl, int write, void __user *buffer, size_t *lenp, loff_t *ppos); static struct ctl_table_header *appldata_sysctl_header; static struct ctl_table appldata_table[] = { { - .ctl_name = CTL_APPLDATA_TIMER, .procname = "timer", .mode = S_IRUGO | S_IWUSR, - .proc_handler = &appldata_timer_handler, + .proc_handler = appldata_timer_handler, }, { - .ctl_name = CTL_APPLDATA_INTERVAL, .procname = "interval", .mode = S_IRUGO | S_IWUSR, - .proc_handler = &appldata_interval_handler, + .proc_handler = appldata_interval_handler, }, - { .ctl_name = 0 } + { }, }; static struct ctl_table appldata_dir_table[] = { { - .ctl_name = CTL_APPLDATA, .procname = appldata_proc_name, .maxlen = 0, .mode = S_IRUGO | S_IXUGO, .child = appldata_table, }, - { .ctl_name = 0 } + { }, }; /* * Timer */ -DEFINE_PER_CPU(struct vtimer_list, appldata_timer); -static atomic_t appldata_expire_count = ATOMIC_INIT(0); +static struct vtimer_list appldata_timer; static DEFINE_SPINLOCK(appldata_timer_lock); static int appldata_interval = APPLDATA_CPU_INTERVAL; static int appldata_timer_active; +static int appldata_timer_suspended = 0; /* * Work queue */ static struct workqueue_struct *appldata_wq; -static void appldata_work_fn(void *data); -static DECLARE_WORK(appldata_work, appldata_work_fn, NULL); +static void appldata_work_fn(struct work_struct *work); +static DECLARE_WORK(appldata_work, appldata_work_fn); /* * Ops list */ -static DEFINE_SPINLOCK(appldata_ops_lock); +static DEFINE_MUTEX(appldata_ops_mutex); static LIST_HEAD(appldata_ops_list); @@ -154,15 +110,9 @@ static LIST_HEAD(appldata_ops_list); * * schedule work and reschedule timer */ -static void appldata_timer_function(unsigned long data, struct pt_regs *regs) +static void appldata_timer_function(unsigned long data) { - P_DEBUG(" -= Timer =-\n"); - P_DEBUG("CPU: %i, expire_count: %i\n", smp_processor_id(), - atomic_read(&appldata_expire_count)); - if (atomic_dec_and_test(&appldata_expire_count)) { - atomic_set(&appldata_expire_count, num_online_cpus()); - queue_work(appldata_wq, (struct work_struct *) data); - } + queue_work(appldata_wq, (struct work_struct *) data); } /* @@ -170,24 +120,19 @@ static void appldata_timer_function(unsigned long data, struct pt_regs *regs) * * call data gathering function for each (active) module */ -static void appldata_work_fn(void *data) +static void appldata_work_fn(struct work_struct *work) { struct list_head *lh; struct appldata_ops *ops; - int i; - P_DEBUG(" -= Work Queue =-\n"); - i = 0; - spin_lock(&appldata_ops_lock); + mutex_lock(&appldata_ops_mutex); list_for_each(lh, &appldata_ops_list) { ops = list_entry(lh, struct appldata_ops, list); - P_DEBUG("list_for_each loop: %i) active = %u, name = %s\n", - ++i, ops->active, ops->name); if (ops->active == 1) { ops->callback(ops->data); } } - spin_unlock(&appldata_ops_lock); + mutex_unlock(&appldata_ops_mutex); } /* @@ -195,65 +140,26 @@ static void appldata_work_fn(void *data) * * prepare parameter list, issue DIAG 0xDC */ -static int appldata_diag(char record_nr, u16 function, unsigned long buffer, - u16 length) +int appldata_diag(char record_nr, u16 function, unsigned long buffer, + u16 length, char *mod_lvl) { - unsigned long ry; - struct appldata_product_id { - char prod_nr[7]; /* product nr. */ - char prod_fn[2]; /* product function */ - char record_nr; /* record nr. */ - char version_nr[2]; /* version */ - char release_nr[2]; /* release */ - char mod_lvl[2]; /* modification lvl. */ - } appldata_product_id = { - /* all strings are EBCDIC, record_nr is byte */ + struct appldata_product_id id = { .prod_nr = {0xD3, 0xC9, 0xD5, 0xE4, - 0xE7, 0xD2, 0xD9}, /* "LINUXKR" */ - .prod_fn = {0xD5, 0xD3}, /* "NL" */ - .record_nr = record_nr, - .version_nr = {0xF2, 0xF6}, /* "26" */ - .release_nr = {0xF0, 0xF1}, /* "01" */ - .mod_lvl = {0xF0, 0xF0}, /* "00" */ - }; - struct appldata_parameter_list appldata_parameter_list = { - .diag = 0xDC, - .function = function, - .parlist_length = - sizeof(appldata_parameter_list), - .buffer_length = length, - .product_id_addr = - (unsigned long) &appldata_product_id, - .buffer_addr = virt_to_phys((void *) buffer) + 0xE7, 0xD2, 0xD9}, /* "LINUXKR" */ + .prod_fn = 0xD5D3, /* "NL" */ + .version_nr = 0xF2F6, /* "26" */ + .release_nr = 0xF0F1, /* "01" */ }; - if (!MACHINE_IS_VM) - return -ENOSYS; - ry = -1; - asm volatile( - "diag %1,%0,0xDC\n\t" - : "=d" (ry) : "d" (&(appldata_parameter_list)) : "cc"); - return (int) ry; + id.record_nr = record_nr; + id.mod_lvl = (mod_lvl[0]) << 8 | mod_lvl[1]; + return appldata_asm(&id, function, (void *) buffer, length); } /************************ timer, work, DIAG <END> ****************************/ /****************************** /proc stuff **********************************/ -/* - * appldata_mod_vtimer_wrap() - * - * wrapper function for mod_virt_timer(), because smp_call_function_on() - * accepts only one parameter. - */ -static void __appldata_mod_vtimer_wrap(void *p) { - struct { - struct vtimer_list *timer; - u64 expires; - } *args = p; - mod_virt_timer(args->timer, args->expires); -} - #define APPLDATA_ADD_TIMER 0 #define APPLDATA_DEL_TIMER 1 #define APPLDATA_MOD_TIMER 2 @@ -264,51 +170,28 @@ static void __appldata_mod_vtimer_wrap(void *p) { * Add, delete or modify virtual timers on all online cpus. * The caller needs to get the appldata_timer_lock spinlock. */ -static void -__appldata_vtimer_setup(int cmd) +static void __appldata_vtimer_setup(int cmd) { - u64 per_cpu_interval; - int i; + u64 timer_interval = (u64) appldata_interval * 1000 * TOD_MICRO; switch (cmd) { case APPLDATA_ADD_TIMER: if (appldata_timer_active) break; - per_cpu_interval = (u64) (appldata_interval*1000 / - num_online_cpus()) * TOD_MICRO; - for_each_online_cpu(i) { - per_cpu(appldata_timer, i).expires = per_cpu_interval; - smp_call_function_on(add_virt_timer_periodic, - &per_cpu(appldata_timer, i), - 0, 1, i); - } + appldata_timer.expires = timer_interval; + add_virt_timer_periodic(&appldata_timer); appldata_timer_active = 1; - P_INFO("Monitoring timer started.\n"); break; case APPLDATA_DEL_TIMER: - for_each_online_cpu(i) - del_virt_timer(&per_cpu(appldata_timer, i)); + del_virt_timer(&appldata_timer); if (!appldata_timer_active) break; appldata_timer_active = 0; - atomic_set(&appldata_expire_count, num_online_cpus()); - P_INFO("Monitoring timer stopped.\n"); break; case APPLDATA_MOD_TIMER: - per_cpu_interval = (u64) (appldata_interval*1000 / - num_online_cpus()) * TOD_MICRO; if (!appldata_timer_active) break; - for_each_online_cpu(i) { - struct { - struct vtimer_list *timer; - u64 expires; - } args; - args.timer = &per_cpu(appldata_timer, i); - args.expires = per_cpu_interval; - smp_call_function_on(__appldata_mod_vtimer_wrap, - &args, 0, 1, i); - } + mod_virt_timer_periodic(&appldata_timer, timer_interval); } } @@ -318,10 +201,10 @@ __appldata_vtimer_setup(int cmd) * Start/Stop timer, show status of timer (0 = not active, 1 = active) */ static int -appldata_timer_handler(ctl_table *ctl, int write, struct file *filp, +appldata_timer_handler(struct ctl_table *ctl, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { - int len; + unsigned int len; char buf[2]; if (!*lenp || *ppos) { @@ -329,7 +212,9 @@ appldata_timer_handler(ctl_table *ctl, int write, struct file *filp, return 0; } if (!write) { - len = sprintf(buf, appldata_timer_active ? "1\n" : "0\n"); + strncpy(buf, appldata_timer_active ? "1\n" : "0\n", + ARRAY_SIZE(buf)); + len = strnlen(buf, ARRAY_SIZE(buf)); if (len > *lenp) len = *lenp; if (copy_to_user(buffer, buf, len)) @@ -358,10 +243,11 @@ out: * current timer interval. */ static int -appldata_interval_handler(ctl_table *ctl, int write, struct file *filp, +appldata_interval_handler(struct ctl_table *ctl, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { - int len, interval; + unsigned int len; + int interval; char buf[16]; if (!*lenp || *ppos) { @@ -377,22 +263,17 @@ appldata_interval_handler(ctl_table *ctl, int write, struct file *filp, goto out; } len = *lenp; - if (copy_from_user(buf, buffer, len > sizeof(buf) ? sizeof(buf) : len)) { + if (copy_from_user(buf, buffer, len > sizeof(buf) ? sizeof(buf) : len)) return -EFAULT; - } + interval = 0; sscanf(buf, "%i", &interval); - if (interval <= 0) { - P_ERROR("Timer CPU interval has to be > 0!\n"); + if (interval <= 0) return -EINVAL; - } spin_lock(&appldata_timer_lock); appldata_interval = interval; __appldata_vtimer_setup(APPLDATA_MOD_TIMER); spin_unlock(&appldata_timer_lock); - - P_INFO("Monitoring CPU interval set to %u milliseconds.\n", - interval); out: *lenp = len; *ppos += len; @@ -406,16 +287,17 @@ out: * monitoring (0 = not in process, 1 = in process) */ static int -appldata_generic_handler(ctl_table *ctl, int write, struct file *filp, +appldata_generic_handler(struct ctl_table *ctl, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { struct appldata_ops *ops = NULL, *tmp_ops; - int rc, len, found; + unsigned int len; + int rc, found; char buf[2]; struct list_head *lh; found = 0; - spin_lock(&appldata_ops_lock); + mutex_lock(&appldata_ops_mutex); list_for_each(lh, &appldata_ops_list) { tmp_ops = list_entry(lh, struct appldata_ops, list); if (&tmp_ops->ctl_table[2] == ctl) { @@ -423,15 +305,15 @@ appldata_generic_handler(ctl_table *ctl, int write, struct file *filp, } } if (!found) { - spin_unlock(&appldata_ops_lock); + mutex_unlock(&appldata_ops_mutex); return -ENODEV; } ops = ctl->data; if (!try_module_get(ops->owner)) { // protect this function - spin_unlock(&appldata_ops_lock); + mutex_unlock(&appldata_ops_mutex); return -ENODEV; } - spin_unlock(&appldata_ops_lock); + mutex_unlock(&appldata_ops_mutex); if (!*lenp || *ppos) { *lenp = 0; @@ -439,7 +321,8 @@ appldata_generic_handler(ctl_table *ctl, int write, struct file *filp, return 0; } if (!write) { - len = sprintf(buf, ops->active ? "1\n" : "0\n"); + strncpy(buf, ops->active ? "1\n" : "0\n", ARRAY_SIZE(buf)); + len = strnlen(buf, ARRAY_SIZE(buf)); if (len > *lenp) len = *lenp; if (copy_to_user(buffer, buf, len)) { @@ -455,42 +338,36 @@ appldata_generic_handler(ctl_table *ctl, int write, struct file *filp, return -EFAULT; } - spin_lock(&appldata_ops_lock); + mutex_lock(&appldata_ops_mutex); if ((buf[0] == '1') && (ops->active == 0)) { // protect work queue callback if (!try_module_get(ops->owner)) { - spin_unlock(&appldata_ops_lock); + mutex_unlock(&appldata_ops_mutex); module_put(ops->owner); return -ENODEV; } - ops->active = 1; ops->callback(ops->data); // init record rc = appldata_diag(ops->record_nr, APPLDATA_START_INTERVAL_REC, - (unsigned long) ops->data, ops->size); + (unsigned long) ops->data, ops->size, + ops->mod_lvl); if (rc != 0) { - P_ERROR("START DIAG 0xDC for %s failed, " - "return code: %d\n", ops->name, rc); + pr_err("Starting the data collection for %s " + "failed with rc=%d\n", ops->name, rc); module_put(ops->owner); - ops->active = 0; - } else { - P_INFO("Monitoring %s data enabled, " - "DIAG 0xDC started.\n", ops->name); - } + } else + ops->active = 1; } else if ((buf[0] == '0') && (ops->active == 1)) { ops->active = 0; rc = appldata_diag(ops->record_nr, APPLDATA_STOP_REC, - (unsigned long) ops->data, ops->size); - if (rc != 0) { - P_ERROR("STOP DIAG 0xDC for %s failed, " - "return code: %d\n", ops->name, rc); - } else { - P_INFO("Monitoring %s data disabled, " - "DIAG 0xDC stopped.\n", ops->name); - } + (unsigned long) ops->data, ops->size, + ops->mod_lvl); + if (rc != 0) + pr_err("Stopping the data collection for %s " + "failed with rc=%d\n", ops->name, rc); module_put(ops->owner); } - spin_unlock(&appldata_ops_lock); + mutex_unlock(&appldata_ops_mutex); out: *lenp = len; *ppos += len; @@ -509,76 +386,37 @@ out: */ int appldata_register_ops(struct appldata_ops *ops) { - struct list_head *lh; - struct appldata_ops *tmp_ops; - int i; - - i = 0; + if (ops->size > APPLDATA_MAX_REC_SIZE) + return -EINVAL; - if ((ops->size > APPLDATA_MAX_REC_SIZE) || - (ops->size < 0)){ - P_ERROR("Invalid size of %s record = %i, maximum = %i!\n", - ops->name, ops->size, APPLDATA_MAX_REC_SIZE); + ops->ctl_table = kzalloc(4 * sizeof(struct ctl_table), GFP_KERNEL); + if (!ops->ctl_table) return -ENOMEM; - } - if ((ops->ctl_nr == CTL_APPLDATA) || - (ops->ctl_nr == CTL_APPLDATA_TIMER) || - (ops->ctl_nr == CTL_APPLDATA_INTERVAL)) { - P_ERROR("ctl_nr %i already in use!\n", ops->ctl_nr); - return -EBUSY; - } - ops->ctl_table = kmalloc(4*sizeof(struct ctl_table), GFP_KERNEL); - if (ops->ctl_table == NULL) { - P_ERROR("Not enough memory for %s ctl_table!\n", ops->name); - return -ENOMEM; - } - memset(ops->ctl_table, 0, 4*sizeof(struct ctl_table)); - spin_lock(&appldata_ops_lock); - list_for_each(lh, &appldata_ops_list) { - tmp_ops = list_entry(lh, struct appldata_ops, list); - P_DEBUG("register_ops loop: %i) name = %s, ctl = %i\n", - ++i, tmp_ops->name, tmp_ops->ctl_nr); - P_DEBUG("Comparing %s (ctl %i) with %s (ctl %i)\n", - tmp_ops->name, tmp_ops->ctl_nr, ops->name, - ops->ctl_nr); - if (strncmp(tmp_ops->name, ops->name, - APPLDATA_PROC_NAME_LENGTH) == 0) { - P_ERROR("Name \"%s\" already registered!\n", ops->name); - kfree(ops->ctl_table); - spin_unlock(&appldata_ops_lock); - return -EBUSY; - } - if (tmp_ops->ctl_nr == ops->ctl_nr) { - P_ERROR("ctl_nr %i already registered!\n", ops->ctl_nr); - kfree(ops->ctl_table); - spin_unlock(&appldata_ops_lock); - return -EBUSY; - } - } + mutex_lock(&appldata_ops_mutex); list_add(&ops->list, &appldata_ops_list); - spin_unlock(&appldata_ops_lock); + mutex_unlock(&appldata_ops_mutex); - ops->ctl_table[0].ctl_name = CTL_APPLDATA; ops->ctl_table[0].procname = appldata_proc_name; ops->ctl_table[0].maxlen = 0; ops->ctl_table[0].mode = S_IRUGO | S_IXUGO; ops->ctl_table[0].child = &ops->ctl_table[2]; - ops->ctl_table[1].ctl_name = 0; - - ops->ctl_table[2].ctl_name = ops->ctl_nr; ops->ctl_table[2].procname = ops->name; ops->ctl_table[2].mode = S_IRUGO | S_IWUSR; ops->ctl_table[2].proc_handler = appldata_generic_handler; ops->ctl_table[2].data = ops; - ops->ctl_table[3].ctl_name = 0; - - ops->sysctl_header = register_sysctl_table(ops->ctl_table,1); - - P_INFO("%s-ops registered!\n", ops->name); + ops->sysctl_header = register_sysctl_table(ops->ctl_table); + if (!ops->sysctl_header) + goto out; return 0; +out: + mutex_lock(&appldata_ops_mutex); + list_del(&ops->list); + mutex_unlock(&appldata_ops_mutex); + kfree(ops->ctl_table); + return -ENOMEM; } /* @@ -588,67 +426,99 @@ int appldata_register_ops(struct appldata_ops *ops) */ void appldata_unregister_ops(struct appldata_ops *ops) { - spin_lock(&appldata_ops_lock); - unregister_sysctl_table(ops->sysctl_header); + mutex_lock(&appldata_ops_mutex); list_del(&ops->list); + mutex_unlock(&appldata_ops_mutex); + unregister_sysctl_table(ops->sysctl_header); kfree(ops->ctl_table); - ops->ctl_table = NULL; - spin_unlock(&appldata_ops_lock); - P_INFO("%s-ops unregistered!\n", ops->name); } /********************** module-ops management <END> **************************/ -/******************************* init / exit *********************************/ - -static void -appldata_online_cpu(int cpu) +/**************************** suspend / resume *******************************/ +static int appldata_freeze(struct device *dev) { - init_virt_timer(&per_cpu(appldata_timer, cpu)); - per_cpu(appldata_timer, cpu).function = appldata_timer_function; - per_cpu(appldata_timer, cpu).data = (unsigned long) - &appldata_work; - atomic_inc(&appldata_expire_count); + struct appldata_ops *ops; + int rc; + struct list_head *lh; + spin_lock(&appldata_timer_lock); - __appldata_vtimer_setup(APPLDATA_MOD_TIMER); + if (appldata_timer_active) { + __appldata_vtimer_setup(APPLDATA_DEL_TIMER); + appldata_timer_suspended = 1; + } spin_unlock(&appldata_timer_lock); + + mutex_lock(&appldata_ops_mutex); + list_for_each(lh, &appldata_ops_list) { + ops = list_entry(lh, struct appldata_ops, list); + if (ops->active == 1) { + rc = appldata_diag(ops->record_nr, APPLDATA_STOP_REC, + (unsigned long) ops->data, ops->size, + ops->mod_lvl); + if (rc != 0) + pr_err("Stopping the data collection for %s " + "failed with rc=%d\n", ops->name, rc); + } + } + mutex_unlock(&appldata_ops_mutex); + return 0; } -static void -appldata_offline_cpu(int cpu) +static int appldata_restore(struct device *dev) { - del_virt_timer(&per_cpu(appldata_timer, cpu)); - if (atomic_dec_and_test(&appldata_expire_count)) { - atomic_set(&appldata_expire_count, num_online_cpus()); - queue_work(appldata_wq, &appldata_work); - } + struct appldata_ops *ops; + int rc; + struct list_head *lh; + spin_lock(&appldata_timer_lock); - __appldata_vtimer_setup(APPLDATA_MOD_TIMER); + if (appldata_timer_suspended) { + __appldata_vtimer_setup(APPLDATA_ADD_TIMER); + appldata_timer_suspended = 0; + } spin_unlock(&appldata_timer_lock); + + mutex_lock(&appldata_ops_mutex); + list_for_each(lh, &appldata_ops_list) { + ops = list_entry(lh, struct appldata_ops, list); + if (ops->active == 1) { + ops->callback(ops->data); // init record + rc = appldata_diag(ops->record_nr, + APPLDATA_START_INTERVAL_REC, + (unsigned long) ops->data, ops->size, + ops->mod_lvl); + if (rc != 0) { + pr_err("Starting the data collection for %s " + "failed with rc=%d\n", ops->name, rc); + } + } + } + mutex_unlock(&appldata_ops_mutex); + return 0; } -static int -appldata_cpu_notify(struct notifier_block *self, - unsigned long action, void *hcpu) +static int appldata_thaw(struct device *dev) { - switch (action) { - case CPU_ONLINE: - appldata_online_cpu((long) hcpu); - break; -#ifdef CONFIG_HOTPLUG_CPU - case CPU_DEAD: - appldata_offline_cpu((long) hcpu); - break; -#endif - default: - break; - } - return NOTIFY_OK; + return appldata_restore(dev); } -static struct notifier_block __devinitdata appldata_nb = { - .notifier_call = appldata_cpu_notify, +static const struct dev_pm_ops appldata_pm_ops = { + .freeze = appldata_freeze, + .thaw = appldata_thaw, + .restore = appldata_restore, +}; + +static struct platform_driver appldata_pdrv = { + .driver = { + .name = "appldata", + .owner = THIS_MODULE, + .pm = &appldata_pm_ops, + }, }; +/************************* suspend / resume <END> ****************************/ + + +/******************************* init / exit *********************************/ /* * appldata_init() @@ -657,124 +527,49 @@ static struct notifier_block __devinitdata appldata_nb = { */ static int __init appldata_init(void) { - int i; + int rc; + + init_virt_timer(&appldata_timer); + appldata_timer.function = appldata_timer_function; + appldata_timer.data = (unsigned long) &appldata_work; - P_DEBUG("sizeof(parameter_list) = %lu\n", - sizeof(struct appldata_parameter_list)); + rc = platform_driver_register(&appldata_pdrv); + if (rc) + return rc; + appldata_pdev = platform_device_register_simple("appldata", -1, NULL, + 0); + if (IS_ERR(appldata_pdev)) { + rc = PTR_ERR(appldata_pdev); + goto out_driver; + } appldata_wq = create_singlethread_workqueue("appldata"); if (!appldata_wq) { - P_ERROR("Could not create work queue\n"); - return -ENOMEM; + rc = -ENOMEM; + goto out_device; } - for_each_online_cpu(i) - appldata_online_cpu(i); - - /* Register cpu hotplug notifier */ - register_cpu_notifier(&appldata_nb); - - appldata_sysctl_header = register_sysctl_table(appldata_dir_table, 1); -#ifdef MODULE - appldata_dir_table[0].de->owner = THIS_MODULE; - appldata_table[0].de->owner = THIS_MODULE; - appldata_table[1].de->owner = THIS_MODULE; -#endif - - P_DEBUG("Base interface initialized.\n"); + appldata_sysctl_header = register_sysctl_table(appldata_dir_table); return 0; -} - -/* - * appldata_exit() - * - * stop timer, unregister /proc entries - */ -static void __exit appldata_exit(void) -{ - struct list_head *lh; - struct appldata_ops *ops; - int rc, i; - - P_DEBUG("Unloading module ...\n"); - /* - * ops list should be empty, but just in case something went wrong... - */ - spin_lock(&appldata_ops_lock); - list_for_each(lh, &appldata_ops_list) { - ops = list_entry(lh, struct appldata_ops, list); - rc = appldata_diag(ops->record_nr, APPLDATA_STOP_REC, - (unsigned long) ops->data, ops->size); - if (rc != 0) { - P_ERROR("STOP DIAG 0xDC for %s failed, " - "return code: %d\n", ops->name, rc); - } - } - spin_unlock(&appldata_ops_lock); - - for_each_online_cpu(i) - appldata_offline_cpu(i); - appldata_timer_active = 0; - - unregister_sysctl_table(appldata_sysctl_header); - - destroy_workqueue(appldata_wq); - P_DEBUG("... module unloaded!\n"); +out_device: + platform_device_unregister(appldata_pdev); +out_driver: + platform_driver_unregister(&appldata_pdrv); + return rc; } -/**************************** init / exit <END> ******************************/ +__initcall(appldata_init); -module_init(appldata_init); -module_exit(appldata_exit); -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Gerald Schaefer"); -MODULE_DESCRIPTION("Linux-VM Monitor Stream, base infrastructure"); +/**************************** init / exit <END> ******************************/ EXPORT_SYMBOL_GPL(appldata_register_ops); EXPORT_SYMBOL_GPL(appldata_unregister_ops); +EXPORT_SYMBOL_GPL(appldata_diag); -#ifdef MODULE -/* - * Kernel symbols needed by appldata_mem and appldata_os modules. - * However, if this file is compiled as a module (for testing only), these - * symbols are not exported. In this case, we define them locally and export - * those. - */ -void si_swapinfo(struct sysinfo *val) -{ - val->freeswap = -1ul; - val->totalswap = -1ul; -} - -unsigned long avenrun[3] = {-1 - FIXED_1/200, -1 - FIXED_1/200, - -1 - FIXED_1/200}; -int nr_threads = -1; - -void get_full_page_state(struct page_state *ps) -{ - memset(ps, -1, sizeof(struct page_state)); -} - -unsigned long nr_running(void) -{ - return -1; -} - -unsigned long nr_iowait(void) -{ - return -1; -} - -/*unsigned long nr_context_switches(void) -{ - return -1; -}*/ -#endif /* MODULE */ +#ifdef CONFIG_SWAP EXPORT_SYMBOL_GPL(si_swapinfo); +#endif EXPORT_SYMBOL_GPL(nr_threads); -EXPORT_SYMBOL_GPL(avenrun); -EXPORT_SYMBOL_GPL(get_full_page_state); EXPORT_SYMBOL_GPL(nr_running); EXPORT_SYMBOL_GPL(nr_iowait); -//EXPORT_SYMBOL_GPL(nr_context_switches); |