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-rw-r--r--include/linux/timer.h25
-rw-r--r--kernel/time/timer.c10
2 files changed, 27 insertions, 8 deletions
diff --git a/include/linux/timer.h b/include/linux/timer.h
index 20ac746f3eb3..046d6cf26498 100644
--- a/include/linux/timer.h
+++ b/include/linux/timer.h
@@ -62,7 +62,8 @@ struct timer_list {
#define TIMER_MIGRATING 0x00080000
#define TIMER_BASEMASK (TIMER_CPUMASK | TIMER_MIGRATING)
#define TIMER_DEFERRABLE 0x00100000
-#define TIMER_IRQSAFE 0x00200000
+#define TIMER_PINNED 0x00200000
+#define TIMER_IRQSAFE 0x00400000
#define __TIMER_INITIALIZER(_function, _expires, _data, _flags) { \
.entry = { .next = TIMER_ENTRY_STATIC }, \
@@ -78,9 +79,15 @@ struct timer_list {
#define TIMER_INITIALIZER(_function, _expires, _data) \
__TIMER_INITIALIZER((_function), (_expires), (_data), 0)
+#define TIMER_PINNED_INITIALIZER(_function, _expires, _data) \
+ __TIMER_INITIALIZER((_function), (_expires), (_data), TIMER_PINNED)
+
#define TIMER_DEFERRED_INITIALIZER(_function, _expires, _data) \
__TIMER_INITIALIZER((_function), (_expires), (_data), TIMER_DEFERRABLE)
+#define TIMER_PINNED_DEFERRED_INITIALIZER(_function, _expires, _data) \
+ __TIMER_INITIALIZER((_function), (_expires), (_data), TIMER_DEFERRABLE | TIMER_PINNED)
+
#define DEFINE_TIMER(_name, _function, _expires, _data) \
struct timer_list _name = \
TIMER_INITIALIZER(_function, _expires, _data)
@@ -124,8 +131,12 @@ static inline void init_timer_on_stack_key(struct timer_list *timer,
#define init_timer(timer) \
__init_timer((timer), 0)
+#define init_timer_pinned(timer) \
+ __init_timer((timer), TIMER_PINNED)
#define init_timer_deferrable(timer) \
__init_timer((timer), TIMER_DEFERRABLE)
+#define init_timer_pinned_deferrable(timer) \
+ __init_timer((timer), TIMER_DEFERRABLE | TIMER_PINNED)
#define init_timer_on_stack(timer) \
__init_timer_on_stack((timer), 0)
@@ -145,12 +156,20 @@ static inline void init_timer_on_stack_key(struct timer_list *timer,
#define setup_timer(timer, fn, data) \
__setup_timer((timer), (fn), (data), 0)
+#define setup_pinned_timer(timer, fn, data) \
+ __setup_timer((timer), (fn), (data), TIMER_PINNED)
#define setup_deferrable_timer(timer, fn, data) \
__setup_timer((timer), (fn), (data), TIMER_DEFERRABLE)
+#define setup_pinned_deferrable_timer(timer, fn, data) \
+ __setup_timer((timer), (fn), (data), TIMER_DEFERRABLE | TIMER_PINNED)
#define setup_timer_on_stack(timer, fn, data) \
__setup_timer_on_stack((timer), (fn), (data), 0)
+#define setup_pinned_timer_on_stack(timer, fn, data) \
+ __setup_timer_on_stack((timer), (fn), (data), TIMER_PINNED)
#define setup_deferrable_timer_on_stack(timer, fn, data) \
__setup_timer_on_stack((timer), (fn), (data), TIMER_DEFERRABLE)
+#define setup_pinned_deferrable_timer_on_stack(timer, fn, data) \
+ __setup_timer_on_stack((timer), (fn), (data), TIMER_DEFERRABLE | TIMER_PINNED)
/**
* timer_pending - is a timer pending?
@@ -175,8 +194,8 @@ extern int mod_timer_pinned(struct timer_list *timer, unsigned long expires);
extern void set_timer_slack(struct timer_list *time, int slack_hz);
-#define TIMER_NOT_PINNED 0
-#define TIMER_PINNED 1
+#define MOD_TIMER_NOT_PINNED 0
+#define MOD_TIMER_PINNED 1
/*
* The jiffies value which is added to now, when there is no timer
* in the timer wheel:
diff --git a/kernel/time/timer.c b/kernel/time/timer.c
index 3a95f9728778..693f6d14058e 100644
--- a/kernel/time/timer.c
+++ b/kernel/time/timer.c
@@ -782,7 +782,7 @@ __mod_timer(struct timer_list *timer, unsigned long expires,
debug_activate(timer, expires);
- new_base = get_target_base(base, pinned);
+ new_base = get_target_base(base, pinned || timer->flags & TIMER_PINNED);
if (base != new_base) {
/*
@@ -825,7 +825,7 @@ out_unlock:
*/
int mod_timer_pending(struct timer_list *timer, unsigned long expires)
{
- return __mod_timer(timer, expires, true, TIMER_NOT_PINNED);
+ return __mod_timer(timer, expires, true, MOD_TIMER_NOT_PINNED);
}
EXPORT_SYMBOL(mod_timer_pending);
@@ -900,7 +900,7 @@ int mod_timer(struct timer_list *timer, unsigned long expires)
if (timer_pending(timer) && timer->expires == expires)
return 1;
- return __mod_timer(timer, expires, false, TIMER_NOT_PINNED);
+ return __mod_timer(timer, expires, false, MOD_TIMER_NOT_PINNED);
}
EXPORT_SYMBOL(mod_timer);
@@ -928,7 +928,7 @@ int mod_timer_pinned(struct timer_list *timer, unsigned long expires)
if (timer->expires == expires && timer_pending(timer))
return 1;
- return __mod_timer(timer, expires, false, TIMER_PINNED);
+ return __mod_timer(timer, expires, false, MOD_TIMER_PINNED);
}
EXPORT_SYMBOL(mod_timer_pinned);
@@ -1512,7 +1512,7 @@ signed long __sched schedule_timeout(signed long timeout)
expire = timeout + jiffies;
setup_timer_on_stack(&timer, process_timeout, (unsigned long)current);
- __mod_timer(&timer, expire, false, TIMER_NOT_PINNED);
+ __mod_timer(&timer, expire, false, MOD_TIMER_NOT_PINNED);
schedule();
del_singleshot_timer_sync(&timer);