+++ /dev/null
-From eef7f012d480142a3eccff91e0ae73ecb13220b3 Mon Sep 17 00:00:00 2001
-From: =?utf-8?q?Arve=20Hj=C3=B8nnev=C3=A5g?= <arve@android.com>
-Date: Tue, 9 Sep 2008 22:14:34 -0700
-Subject: [PATCH 066/134] PM: Implement wakelock api.
-MIME-Version: 1.0
-Content-Type: text/plain; charset=utf-8
-Content-Transfer-Encoding: 8bit
-
-PM: wakelock: Replace expire work with a timer
-
-The expire work function did not work in the normal case.
-
-Signed-off-by: Arve Hjønnevåg <arve@android.com>
----
- kernel/power/Kconfig | 19 ++
- kernel/power/Makefile | 1 +
- kernel/power/power.h | 7 +
- kernel/power/wakelock.c | 598 +++++++++++++++++++++++++++++++++++++++++++++++
- 4 files changed, 625 insertions(+), 0 deletions(-)
- create mode 100644 kernel/power/wakelock.c
-
---- a/kernel/power/Kconfig
-+++ b/kernel/power/Kconfig
-@@ -116,6 +116,25 @@ config SUSPEND_FREEZER
-
- Turning OFF this setting is NOT recommended! If in doubt, say Y.
-
-+config HAS_WAKELOCK
-+ bool
-+
-+config WAKELOCK
-+ bool "Wake lock"
-+ depends on PM && RTC_CLASS
-+ default n
-+ select HAS_WAKELOCK
-+ ---help---
-+ Enable wakelocks. When user space request a sleep state the
-+ sleep request will be delayed until no wake locks are held.
-+
-+config WAKELOCK_STAT
-+ bool "Wake lock stats"
-+ depends on WAKELOCK
-+ default y
-+ ---help---
-+ Report wake lock stats in /proc/wakelocks
-+
- config HIBERNATION
- bool "Hibernation (aka 'suspend to disk')"
- depends on PM && SWAP && ARCH_HIBERNATION_POSSIBLE
---- a/kernel/power/Makefile
-+++ b/kernel/power/Makefile
-@@ -6,6 +6,7 @@ endif
- obj-$(CONFIG_PM) += main.o
- obj-$(CONFIG_PM_SLEEP) += console.o
- obj-$(CONFIG_FREEZER) += process.o
-+obj-$(CONFIG_WAKELOCK) += wakelock.o
- obj-$(CONFIG_HIBERNATION) += swsusp.o disk.o snapshot.o swap.o user.o
-
- obj-$(CONFIG_MAGIC_SYSRQ) += poweroff.o
---- a/kernel/power/power.h
-+++ b/kernel/power/power.h
-@@ -223,3 +223,10 @@ static inline void suspend_thaw_processe
- {
- }
- #endif
-+
-+#ifdef CONFIG_WAKELOCK
-+/* kernel/power/wakelock.c */
-+extern struct workqueue_struct *suspend_work_queue;
-+extern struct wake_lock main_wake_lock;
-+extern suspend_state_t requested_suspend_state;
-+#endif
---- /dev/null
-+++ b/kernel/power/wakelock.c
-@@ -0,0 +1,598 @@
-+/* kernel/power/wakelock.c
-+ *
-+ * Copyright (C) 2005-2008 Google, Inc.
-+ *
-+ * This software is licensed under the terms of the GNU General Public
-+ * License version 2, as published by the Free Software Foundation, and
-+ * may be copied, distributed, and modified under those terms.
-+ *
-+ * This program is distributed in the hope that it will be useful,
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-+ * GNU General Public License for more details.
-+ *
-+ */
-+
-+#include <linux/module.h>
-+#include <linux/platform_device.h>
-+#include <linux/rtc.h>
-+#include <linux/suspend.h>
-+#include <linux/syscalls.h> /* sys_sync */
-+#include <linux/wakelock.h>
-+#ifdef CONFIG_WAKELOCK_STAT
-+#include <linux/proc_fs.h>
-+#endif
-+#include "power.h"
-+
-+enum {
-+ DEBUG_EXIT_SUSPEND = 1U << 0,
-+ DEBUG_WAKEUP = 1U << 1,
-+ DEBUG_SUSPEND = 1U << 2,
-+ DEBUG_EXPIRE = 1U << 3,
-+ DEBUG_WAKE_LOCK = 1U << 4,
-+};
-+static int debug_mask = DEBUG_EXIT_SUSPEND | DEBUG_WAKEUP;
-+module_param_named(debug_mask, debug_mask, int, S_IRUGO | S_IWUSR | S_IWGRP);
-+
-+#define WAKE_LOCK_TYPE_MASK (0x0f)
-+#define WAKE_LOCK_INITIALIZED (1U << 8)
-+#define WAKE_LOCK_ACTIVE (1U << 9)
-+#define WAKE_LOCK_AUTO_EXPIRE (1U << 10)
-+#define WAKE_LOCK_PREVENTING_SUSPEND (1U << 11)
-+
-+static DEFINE_SPINLOCK(list_lock);
-+static LIST_HEAD(inactive_locks);
-+static struct list_head active_wake_locks[WAKE_LOCK_TYPE_COUNT];
-+static int current_event_num;
-+struct workqueue_struct *suspend_work_queue;
-+struct wake_lock main_wake_lock;
-+suspend_state_t requested_suspend_state = PM_SUSPEND_MEM;
-+static struct wake_lock unknown_wakeup;
-+
-+#ifdef CONFIG_WAKELOCK_STAT
-+static struct wake_lock deleted_wake_locks;
-+static ktime_t last_sleep_time_update;
-+static int wait_for_wakeup;
-+
-+int get_expired_time(struct wake_lock *lock, ktime_t *expire_time)
-+{
-+ struct timespec ts;
-+ struct timespec kt;
-+ struct timespec tomono;
-+ struct timespec delta;
-+ unsigned long seq;
-+ long timeout;
-+
-+ if (!(lock->flags & WAKE_LOCK_AUTO_EXPIRE))
-+ return 0;
-+ do {
-+ seq = read_seqbegin(&xtime_lock);
-+ timeout = lock->expires - jiffies;
-+ if (timeout > 0)
-+ return 0;
-+ kt = current_kernel_time();
-+ tomono = wall_to_monotonic;
-+ } while (read_seqretry(&xtime_lock, seq));
-+ jiffies_to_timespec(-timeout, &delta);
-+ set_normalized_timespec(&ts, kt.tv_sec + tomono.tv_sec - delta.tv_sec,
-+ kt.tv_nsec + tomono.tv_nsec - delta.tv_nsec);
-+ *expire_time = timespec_to_ktime(ts);
-+ return 1;
-+}
-+
-+
-+static int print_lock_stat(char *buf, struct wake_lock *lock)
-+{
-+ int lock_count = lock->stat.count;
-+ int expire_count = lock->stat.expire_count;
-+ ktime_t active_time = ktime_set(0, 0);
-+ ktime_t total_time = lock->stat.total_time;
-+ ktime_t max_time = lock->stat.max_time;
-+ ktime_t prevent_suspend_time = lock->stat.prevent_suspend_time;
-+ if (lock->flags & WAKE_LOCK_ACTIVE) {
-+ ktime_t now, add_time;
-+ int expired = get_expired_time(lock, &now);
-+ if (!expired)
-+ now = ktime_get();
-+ add_time = ktime_sub(now, lock->stat.last_time);
-+ lock_count++;
-+ if (!expired)
-+ active_time = add_time;
-+ else
-+ expire_count++;
-+ total_time = ktime_add(total_time, add_time);
-+ if (lock->flags & WAKE_LOCK_PREVENTING_SUSPEND)
-+ prevent_suspend_time = ktime_add(prevent_suspend_time,
-+ ktime_sub(now, last_sleep_time_update));
-+ if (add_time.tv64 > max_time.tv64)
-+ max_time = add_time;
-+ }
-+
-+ return sprintf(buf, "\"%s\"\t%d\t%d\t%d\t%lld\t%lld\t%lld\t%lld\t"
-+ "%lld\n", lock->name, lock_count, expire_count,
-+ lock->stat.wakeup_count, ktime_to_ns(active_time),
-+ ktime_to_ns(total_time),
-+ ktime_to_ns(prevent_suspend_time), ktime_to_ns(max_time),
-+ ktime_to_ns(lock->stat.last_time));
-+}
-+
-+
-+static int wakelocks_read_proc(char *page, char **start, off_t off,
-+ int count, int *eof, void *data)
-+{
-+ unsigned long irqflags;
-+ struct wake_lock *lock;
-+ int len = 0;
-+ char *p = page;
-+ int type;
-+
-+ spin_lock_irqsave(&list_lock, irqflags);
-+
-+ p += sprintf(p, "name\tcount\texpire_count\twake_count\tactive_since"
-+ "\ttotal_time\tsleep_time\tmax_time\tlast_change\n");
-+ list_for_each_entry(lock, &inactive_locks, link) {
-+ p += print_lock_stat(p, lock);
-+ }
-+ for (type = 0; type < WAKE_LOCK_TYPE_COUNT; type++) {
-+ list_for_each_entry(lock, &active_wake_locks[type], link)
-+ p += print_lock_stat(p, lock);
-+ }
-+ spin_unlock_irqrestore(&list_lock, irqflags);
-+
-+ *start = page + off;
-+
-+ len = p - page;
-+ if (len > off)
-+ len -= off;
-+ else
-+ len = 0;
-+
-+ return len < count ? len : count;
-+}
-+
-+static void wake_unlock_stat_locked(struct wake_lock *lock, int expired)
-+{
-+ ktime_t duration;
-+ ktime_t now;
-+ if (!(lock->flags & WAKE_LOCK_ACTIVE))
-+ return;
-+ if (get_expired_time(lock, &now))
-+ expired = 1;
-+ else
-+ now = ktime_get();
-+ lock->stat.count++;
-+ if (expired)
-+ lock->stat.expire_count++;
-+ duration = ktime_sub(now, lock->stat.last_time);
-+ lock->stat.total_time = ktime_add(lock->stat.total_time, duration);
-+ if (ktime_to_ns(duration) > ktime_to_ns(lock->stat.max_time))
-+ lock->stat.max_time = duration;
-+ lock->stat.last_time = ktime_get();
-+ if (lock->flags & WAKE_LOCK_PREVENTING_SUSPEND) {
-+ duration = ktime_sub(now, last_sleep_time_update);
-+ lock->stat.prevent_suspend_time = ktime_add(
-+ lock->stat.prevent_suspend_time, duration);
-+ lock->flags &= ~WAKE_LOCK_PREVENTING_SUSPEND;
-+ }
-+}
-+
-+static void update_sleep_wait_stats_locked(int done)
-+{
-+ struct wake_lock *lock;
-+ ktime_t now, etime, elapsed, add;
-+ int expired;
-+
-+ now = ktime_get();
-+ elapsed = ktime_sub(now, last_sleep_time_update);
-+ list_for_each_entry(lock, &active_wake_locks[WAKE_LOCK_SUSPEND], link) {
-+ expired = get_expired_time(lock, &etime);
-+ if (lock->flags & WAKE_LOCK_PREVENTING_SUSPEND) {
-+ if (expired)
-+ add = ktime_sub(etime, last_sleep_time_update);
-+ else
-+ add = elapsed;
-+ lock->stat.prevent_suspend_time = ktime_add(
-+ lock->stat.prevent_suspend_time, add);
-+ }
-+ if (done || expired)
-+ lock->flags &= ~WAKE_LOCK_PREVENTING_SUSPEND;
-+ else
-+ lock->flags |= WAKE_LOCK_PREVENTING_SUSPEND;
-+ }
-+ last_sleep_time_update = now;
-+}
-+#endif
-+
-+
-+static void expire_wake_lock(struct wake_lock *lock)
-+{
-+#ifdef CONFIG_WAKELOCK_STAT
-+ wake_unlock_stat_locked(lock, 1);
-+#endif
-+ lock->flags &= ~(WAKE_LOCK_ACTIVE | WAKE_LOCK_AUTO_EXPIRE);
-+ list_del(&lock->link);
-+ list_add(&lock->link, &inactive_locks);
-+ if (debug_mask & (DEBUG_WAKE_LOCK | DEBUG_EXPIRE))
-+ pr_info("expired wake lock %s\n", lock->name);
-+}
-+
-+static void print_active_locks(int type)
-+{
-+ unsigned long irqflags;
-+ struct wake_lock *lock;
-+
-+ BUG_ON(type >= WAKE_LOCK_TYPE_COUNT);
-+ spin_lock_irqsave(&list_lock, irqflags);
-+ list_for_each_entry(lock, &active_wake_locks[type], link) {
-+ if (lock->flags & WAKE_LOCK_AUTO_EXPIRE) {
-+ long timeout = lock->expires - jiffies;
-+ if (timeout <= 0)
-+ pr_info("wake lock %s, expired\n", lock->name);
-+ else
-+ pr_info("active wake lock %s, time left %ld\n",
-+ lock->name, timeout);
-+ } else
-+ pr_info("active wake lock %s\n", lock->name);
-+ }
-+ spin_unlock_irqrestore(&list_lock, irqflags);
-+}
-+
-+static long has_wake_lock_locked(int type)
-+{
-+ struct wake_lock *lock, *n;
-+ long max_timeout = 0;
-+
-+ BUG_ON(type >= WAKE_LOCK_TYPE_COUNT);
-+ list_for_each_entry_safe(lock, n, &active_wake_locks[type], link) {
-+ if (lock->flags & WAKE_LOCK_AUTO_EXPIRE) {
-+ long timeout = lock->expires - jiffies;
-+ if (timeout <= 0)
-+ expire_wake_lock(lock);
-+ else if (timeout > max_timeout)
-+ max_timeout = timeout;
-+ } else
-+ return -1;
-+ }
-+ return max_timeout;
-+}
-+
-+long has_wake_lock(int type)
-+{
-+ long ret;
-+ unsigned long irqflags;
-+ spin_lock_irqsave(&list_lock, irqflags);
-+ ret = has_wake_lock_locked(type);
-+ spin_unlock_irqrestore(&list_lock, irqflags);
-+ return ret;
-+}
-+
-+static void suspend(struct work_struct *work)
-+{
-+ int ret;
-+ int entry_event_num;
-+
-+ if (has_wake_lock(WAKE_LOCK_SUSPEND)) {
-+ if (debug_mask & DEBUG_SUSPEND)
-+ pr_info("suspend: abort suspend\n");
-+ return;
-+ }
-+
-+ entry_event_num = current_event_num;
-+ sys_sync();
-+ if (debug_mask & DEBUG_SUSPEND)
-+ pr_info("suspend: enter suspend\n");
-+ ret = pm_suspend(requested_suspend_state);
-+ if (debug_mask & DEBUG_EXIT_SUSPEND) {
-+ struct timespec ts;
-+ struct rtc_time tm;
-+ getnstimeofday(&ts);
-+ rtc_time_to_tm(ts.tv_sec, &tm);
-+ pr_info("suspend: exit suspend, ret = %d "
-+ "(%d-%02d-%02d %02d:%02d:%02d.%09lu UTC)\n", ret,
-+ tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday,
-+ tm.tm_hour, tm.tm_min, tm.tm_sec, ts.tv_nsec);
-+ }
-+ if (current_event_num == entry_event_num) {
-+ if (debug_mask & DEBUG_SUSPEND)
-+ pr_info("suspend: pm_suspend returned with no event\n");
-+ wake_lock_timeout(&unknown_wakeup, HZ / 2);
-+ }
-+}
-+static DECLARE_WORK(suspend_work, suspend);
-+
-+static void expire_wake_locks(unsigned long data)
-+{
-+ long has_lock;
-+ unsigned long irqflags;
-+ if (debug_mask & DEBUG_EXPIRE)
-+ pr_info("expire_wake_locks: start\n");
-+ if (debug_mask & DEBUG_SUSPEND)
-+ print_active_locks(WAKE_LOCK_SUSPEND);
-+ spin_lock_irqsave(&list_lock, irqflags);
-+ has_lock = has_wake_lock_locked(WAKE_LOCK_SUSPEND);
-+ if (debug_mask & DEBUG_EXPIRE)
-+ pr_info("expire_wake_locks: done, has_lock %ld\n", has_lock);
-+ if (has_lock == 0)
-+ queue_work(suspend_work_queue, &suspend_work);
-+ spin_unlock_irqrestore(&list_lock, irqflags);
-+}
-+static DEFINE_TIMER(expire_timer, expire_wake_locks, 0, 0);
-+
-+static int power_suspend_late(struct platform_device *pdev, pm_message_t state)
-+{
-+ int ret = has_wake_lock(WAKE_LOCK_SUSPEND) ? -EAGAIN : 0;
-+#ifdef CONFIG_WAKELOCK_STAT
-+ wait_for_wakeup = 1;
-+#endif
-+ if (debug_mask & DEBUG_SUSPEND)
-+ pr_info("power_suspend_late return %d\n", ret);
-+ return ret;
-+}
-+
-+static struct platform_driver power_driver = {
-+ .driver.name = "power",
-+ .suspend_late = power_suspend_late,
-+};
-+static struct platform_device power_device = {
-+ .name = "power",
-+};
-+
-+void wake_lock_init(struct wake_lock *lock, int type, const char *name)
-+{
-+ unsigned long irqflags = 0;
-+
-+ if (name)
-+ lock->name = name;
-+ BUG_ON(!lock->name);
-+
-+ if (debug_mask & DEBUG_WAKE_LOCK)
-+ pr_info("wake_lock_init name=%s\n", lock->name);
-+#ifdef CONFIG_WAKELOCK_STAT
-+ lock->stat.count = 0;
-+ lock->stat.expire_count = 0;
-+ lock->stat.wakeup_count = 0;
-+ lock->stat.total_time = ktime_set(0, 0);
-+ lock->stat.prevent_suspend_time = ktime_set(0, 0);
-+ lock->stat.max_time = ktime_set(0, 0);
-+ lock->stat.last_time = ktime_set(0, 0);
-+#endif
-+ lock->flags = (type & WAKE_LOCK_TYPE_MASK) | WAKE_LOCK_INITIALIZED;
-+
-+ INIT_LIST_HEAD(&lock->link);
-+ spin_lock_irqsave(&list_lock, irqflags);
-+ list_add(&lock->link, &inactive_locks);
-+ spin_unlock_irqrestore(&list_lock, irqflags);
-+}
-+EXPORT_SYMBOL(wake_lock_init);
-+
-+void wake_lock_destroy(struct wake_lock *lock)
-+{
-+ unsigned long irqflags;
-+ if (debug_mask & DEBUG_WAKE_LOCK)
-+ pr_info("wake_lock_destroy name=%s\n", lock->name);
-+ spin_lock_irqsave(&list_lock, irqflags);
-+ lock->flags &= ~WAKE_LOCK_INITIALIZED;
-+#ifdef CONFIG_WAKELOCK_STAT
-+ if (lock->stat.count) {
-+ deleted_wake_locks.stat.count += lock->stat.count;
-+ deleted_wake_locks.stat.expire_count += lock->stat.expire_count;
-+ deleted_wake_locks.stat.total_time =
-+ ktime_add(deleted_wake_locks.stat.total_time,
-+ lock->stat.total_time);
-+ deleted_wake_locks.stat.prevent_suspend_time =
-+ ktime_add(deleted_wake_locks.stat.prevent_suspend_time,
-+ lock->stat.prevent_suspend_time);
-+ deleted_wake_locks.stat.max_time =
-+ ktime_add(deleted_wake_locks.stat.max_time,
-+ lock->stat.max_time);
-+ }
-+#endif
-+ list_del(&lock->link);
-+ spin_unlock_irqrestore(&list_lock, irqflags);
-+}
-+EXPORT_SYMBOL(wake_lock_destroy);
-+
-+static void wake_lock_internal(
-+ struct wake_lock *lock, long timeout, int has_timeout)
-+{
-+ int type;
-+ unsigned long irqflags;
-+ long expire_in;
-+
-+ spin_lock_irqsave(&list_lock, irqflags);
-+ type = lock->flags & WAKE_LOCK_TYPE_MASK;
-+ BUG_ON(type >= WAKE_LOCK_TYPE_COUNT);
-+ BUG_ON(!(lock->flags & WAKE_LOCK_INITIALIZED));
-+#ifdef CONFIG_WAKELOCK_STAT
-+ if (type == WAKE_LOCK_SUSPEND && wait_for_wakeup) {
-+ if (debug_mask & DEBUG_WAKEUP)
-+ pr_info("wakeup wake lock: %s\n", lock->name);
-+ wait_for_wakeup = 0;
-+ lock->stat.wakeup_count++;
-+ }
-+ if ((lock->flags & WAKE_LOCK_AUTO_EXPIRE) &&
-+ (long)(lock->expires - jiffies) <= 0) {
-+ wake_unlock_stat_locked(lock, 0);
-+ lock->stat.last_time = ktime_get();
-+ }
-+#endif
-+ if (!(lock->flags & WAKE_LOCK_ACTIVE)) {
-+ lock->flags |= WAKE_LOCK_ACTIVE;
-+#ifdef CONFIG_WAKELOCK_STAT
-+ lock->stat.last_time = ktime_get();
-+#endif
-+ }
-+ list_del(&lock->link);
-+ if (has_timeout) {
-+ if (debug_mask & DEBUG_WAKE_LOCK)
-+ pr_info("wake_lock: %s, type %d, timeout %ld.%03lu\n",
-+ lock->name, type, timeout / HZ,
-+ (timeout % HZ) * MSEC_PER_SEC / HZ);
-+ lock->expires = jiffies + timeout;
-+ lock->flags |= WAKE_LOCK_AUTO_EXPIRE;
-+ list_add_tail(&lock->link, &active_wake_locks[type]);
-+ } else {
-+ if (debug_mask & DEBUG_WAKE_LOCK)
-+ pr_info("wake_lock: %s, type %d\n", lock->name, type);
-+ lock->expires = LONG_MAX;
-+ lock->flags &= ~WAKE_LOCK_AUTO_EXPIRE;
-+ list_add(&lock->link, &active_wake_locks[type]);
-+ }
-+ if (type == WAKE_LOCK_SUSPEND) {
-+ current_event_num++;
-+#ifdef CONFIG_WAKELOCK_STAT
-+ if (lock == &main_wake_lock)
-+ update_sleep_wait_stats_locked(1);
-+ else if (!wake_lock_active(&main_wake_lock))
-+ update_sleep_wait_stats_locked(0);
-+#endif
-+ if (has_timeout)
-+ expire_in = has_wake_lock_locked(type);
-+ else
-+ expire_in = -1;
-+ if (expire_in > 0) {
-+ if (debug_mask & DEBUG_EXPIRE)
-+ pr_info("wake_lock: %s, start expire timer, "
-+ "%ld\n", lock->name, expire_in);
-+ mod_timer(&expire_timer, jiffies + expire_in);
-+ } else {
-+ if (del_timer(&expire_timer))
-+ if (debug_mask & DEBUG_EXPIRE)
-+ pr_info("wake_lock: %s, stop expire timer\n",
-+ lock->name);
-+ if (expire_in == 0)
-+ queue_work(suspend_work_queue, &suspend_work);
-+ }
-+ }
-+ spin_unlock_irqrestore(&list_lock, irqflags);
-+}
-+
-+void wake_lock(struct wake_lock *lock)
-+{
-+ wake_lock_internal(lock, 0, 0);
-+}
-+EXPORT_SYMBOL(wake_lock);
-+
-+void wake_lock_timeout(struct wake_lock *lock, long timeout)
-+{
-+ wake_lock_internal(lock, timeout, 1);
-+}
-+EXPORT_SYMBOL(wake_lock_timeout);
-+
-+void wake_unlock(struct wake_lock *lock)
-+{
-+ int type;
-+ unsigned long irqflags;
-+ spin_lock_irqsave(&list_lock, irqflags);
-+ type = lock->flags & WAKE_LOCK_TYPE_MASK;
-+#ifdef CONFIG_WAKELOCK_STAT
-+ wake_unlock_stat_locked(lock, 0);
-+#endif
-+ if (debug_mask & DEBUG_WAKE_LOCK)
-+ pr_info("wake_unlock: %s\n", lock->name);
-+ lock->flags &= ~(WAKE_LOCK_ACTIVE | WAKE_LOCK_AUTO_EXPIRE);
-+ list_del(&lock->link);
-+ list_add(&lock->link, &inactive_locks);
-+ if (type == WAKE_LOCK_SUSPEND) {
-+ long has_lock = has_wake_lock_locked(type);
-+ if (has_lock > 0) {
-+ if (debug_mask & DEBUG_EXPIRE)
-+ pr_info("wake_unlock: %s, start expire timer, "
-+ "%ld\n", lock->name, has_lock);
-+ mod_timer(&expire_timer, jiffies + has_lock);
-+ } else {
-+ if (del_timer(&expire_timer))
-+ if (debug_mask & DEBUG_EXPIRE)
-+ pr_info("wake_unlock: %s, stop expire "
-+ "timer\n", lock->name);
-+ if (has_lock == 0)
-+ queue_work(suspend_work_queue, &suspend_work);
-+ }
-+ if (lock == &main_wake_lock) {
-+ if (debug_mask & DEBUG_SUSPEND)
-+ print_active_locks(WAKE_LOCK_SUSPEND);
-+#ifdef CONFIG_WAKELOCK_STAT
-+ update_sleep_wait_stats_locked(0);
-+#endif
-+ }
-+ }
-+ spin_unlock_irqrestore(&list_lock, irqflags);
-+}
-+EXPORT_SYMBOL(wake_unlock);
-+
-+int wake_lock_active(struct wake_lock *lock)
-+{
-+ return !!(lock->flags & WAKE_LOCK_ACTIVE);
-+}
-+EXPORT_SYMBOL(wake_lock_active);
-+
-+static int __init wakelocks_init(void)
-+{
-+ int ret;
-+ int i;
-+
-+ for (i = 0; i < ARRAY_SIZE(active_wake_locks); i++)
-+ INIT_LIST_HEAD(&active_wake_locks[i]);
-+
-+#ifdef CONFIG_WAKELOCK_STAT
-+ wake_lock_init(&deleted_wake_locks, WAKE_LOCK_SUSPEND,
-+ "deleted_wake_locks");
-+#endif
-+ wake_lock_init(&main_wake_lock, WAKE_LOCK_SUSPEND, "main");
-+ wake_lock(&main_wake_lock);
-+ wake_lock_init(&unknown_wakeup, WAKE_LOCK_SUSPEND, "unknown_wakeups");
-+
-+ ret = platform_device_register(&power_device);
-+ if (ret) {
-+ pr_err("wakelocks_init: platform_device_register failed\n");
-+ goto err_platform_device_register;
-+ }
-+ ret = platform_driver_register(&power_driver);
-+ if (ret) {
-+ pr_err("wakelocks_init: platform_driver_register failed\n");
-+ goto err_platform_driver_register;
-+ }
-+
-+ suspend_work_queue = create_singlethread_workqueue("suspend");
-+ if (suspend_work_queue == NULL) {
-+ ret = -ENOMEM;
-+ goto err_suspend_work_queue;
-+ }
-+
-+#ifdef CONFIG_WAKELOCK_STAT
-+ create_proc_read_entry("wakelocks", S_IRUGO, NULL,
-+ wakelocks_read_proc, NULL);
-+#endif
-+
-+ return 0;
-+
-+err_suspend_work_queue:
-+ platform_driver_unregister(&power_driver);
-+err_platform_driver_register:
-+ platform_device_unregister(&power_device);
-+err_platform_device_register:
-+ wake_lock_destroy(&unknown_wakeup);
-+ wake_lock_destroy(&main_wake_lock);
-+#ifdef CONFIG_WAKELOCK_STAT
-+ wake_lock_destroy(&deleted_wake_locks);
-+#endif
-+ return ret;
-+}
-+
-+static void __exit wakelocks_exit(void)
-+{
-+#ifdef CONFIG_WAKELOCK_STAT
-+ remove_proc_entry("wakelocks", NULL);
-+#endif
-+ destroy_workqueue(suspend_work_queue);
-+ platform_driver_unregister(&power_driver);
-+ platform_device_unregister(&power_device);
-+ wake_lock_destroy(&unknown_wakeup);
-+ wake_lock_destroy(&main_wake_lock);
-+#ifdef CONFIG_WAKELOCK_STAT
-+ wake_lock_destroy(&deleted_wake_locks);
-+#endif
-+}
-+
-+core_initcall(wakelocks_init);
-+module_exit(wakelocks_exit);
projects / openwrt / svn-archive / archive.git / blobdiff