X-Git-Url: http://git.openwrt.org/?a=blobdiff_plain;f=target%2Flinux%2Fgoldfish%2Fpatches-2.6.30%2F0066-PM-Implement-wakelock-api.patch;fp=target%2Flinux%2Fgoldfish%2Fpatches-2.6.30%2F0066-PM-Implement-wakelock-api.patch;h=0000000000000000000000000000000000000000;hb=1b474249f3eb643a4a3d734e2c2f5052600ed2e1;hp=610bc1f518058d54706b582f8468cc3af907bc93;hpb=2e758985e3d3709aa57dbcafb2496f0049ecb26c;p=openwrt%2Fsvn-archive%2Farchive.git 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 610bc1f518..0000000000 --- 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?= -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 ---- - 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 -+#include -+#include -+#include -+#include /* sys_sync */ -+#include -+#ifdef CONFIG_WAKELOCK_STAT -+#include -+#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);