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authorJesse Barnes <jbarnes@virtuousgeek.org>2010-05-10 14:26:20 -0700
committerMatthew Garrett <mjg@redhat.com>2010-08-03 09:48:45 -0400
commit8cadd2831bf3abc94f4530e7fdbab7bb39b6b27d (patch)
tree4027798914cc3213692a4865797898a5ae0a0b49 /kernel
parent81f61484f16decba0fb68400fe0036b337b4cdc7 (diff)
downloadvexpress-lsk-8cadd2831bf3abc94f4530e7fdbab7bb39b6b27d.tar.gz
timer: add on-stack deferrable timer interfaces
In some cases (for instance with kernel threads) it may be desireable to use on-stack deferrable timers to get their power saving benefits. Add interfaces to support this for the IPS driver. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Matthew Garrett <mjg@redhat.com>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/timer.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/kernel/timer.c b/kernel/timer.c
index ee305c8d4e1..efde11e197c 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -577,6 +577,19 @@ static void __init_timer(struct timer_list *timer,
lockdep_init_map(&timer->lockdep_map, name, key, 0);
}
+void setup_deferrable_timer_on_stack_key(struct timer_list *timer,
+ const char *name,
+ struct lock_class_key *key,
+ void (*function)(unsigned long),
+ unsigned long data)
+{
+ timer->function = function;
+ timer->data = data;
+ init_timer_on_stack_key(timer, name, key);
+ timer_set_deferrable(timer);
+}
+EXPORT_SYMBOL_GPL(setup_deferrable_timer_on_stack_key);
+
/**
* init_timer_key - initialize a timer
* @timer: the timer to be initialized