diff options
Diffstat (limited to 'target/linux/goldfish/patches-2.6.30/0066-PM-Implement-wakelock-api.patch')
| -rw-r--r-- | target/linux/goldfish/patches-2.6.30/0066-PM-Implement-wakelock-api.patch | 673 | 
1 files changed, 0 insertions, 673 deletions
| diff --git a/target/linux/goldfish/patches-2.6.30/0066-PM-Implement-wakelock-api.patch b/target/linux/goldfish/patches-2.6.30/0066-PM-Implement-wakelock-api.patch deleted file mode 100644 index 610bc1f51..000000000 --- a/target/linux/goldfish/patches-2.6.30/0066-PM-Implement-wakelock-api.patch +++ /dev/null @@ -1,673 +0,0 @@ -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); | 
