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authorRafael J. Wysocki <rjw@sisk.pl>2010-10-05 00:07:32 +0400
committerRafael J. Wysocki <rjw@sisk.pl>2010-10-17 03:57:49 +0400
commitdbeeec5fe868f2e2e92fe94daa2c5a047240fdc4 (patch)
tree165c04443d737c0e8524e9917a6e4a338c397391 /include/linux/suspend.h
parent5fc62aad4e7779c2f04691e48b351d08c050c1f1 (diff)
downloadlinux-dbeeec5fe868f2e2e92fe94daa2c5a047240fdc4.tar.xz
PM: Allow wakeup events to abort freezing of tasks
If there is a wakeup event during the freezing of tasks, suspend or hibernation will fail anyway. Since try_to_freeze_tasks() can take up to 20 seconds to complete or fail, aborting it as soon as a wakeup event is detected improves the worst case wakeup latency. Based on a patch from Arve Hjønnevåg. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz>
Diffstat (limited to 'include/linux/suspend.h')
-rw-r--r--include/linux/suspend.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/suspend.h b/include/linux/suspend.h
index 6b1712c51102..26697514c5ec 100644
--- a/include/linux/suspend.h
+++ b/include/linux/suspend.h
@@ -308,6 +308,8 @@ static inline int unregister_pm_notifier(struct notifier_block *nb)
}
#define pm_notifier(fn, pri) do { (void)(fn); } while (0)
+
+static inline bool pm_check_wakeup_events(void) { return true; }
#endif /* !CONFIG_PM_SLEEP */
extern struct mutex pm_mutex;