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authorDan Williams <dan.j.williams@intel.com>2009-09-08 17:55:54 -0700
committerDan Williams <dan.j.williams@intel.com>2009-09-08 17:55:54 -0700
commit9134d02bc0af4a8747d448d1f811ec5f8eb96df6 (patch)
tree704c3e5dcc10f360815c4868a74711f82fb62e27 /include/linux/timer.h
parentbbb20089a3275a19e475dbc21320c3742e3ca423 (diff)
parent80ffb3cceaefa405f2ecd46d66500ed8d53efe74 (diff)
Merge commit 'md/for-linus' into async-tx-next
Conflicts: drivers/md/raid5.c
Diffstat (limited to 'include/linux/timer.h')
-rw-r--r--include/linux/timer.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/timer.h b/include/linux/timer.h
index ccf882eed8f..be62ec2ebea 100644
--- a/include/linux/timer.h
+++ b/include/linux/timer.h
@@ -190,6 +190,8 @@ extern unsigned long get_next_timer_interrupt(unsigned long now);
*/
#ifdef CONFIG_TIMER_STATS
+extern int timer_stats_active;
+
#define TIMER_STATS_FLAG_DEFERRABLE 0x1
extern void init_timer_stats(void);
@@ -203,6 +205,8 @@ extern void __timer_stats_timer_set_start_info(struct timer_list *timer,
static inline void timer_stats_timer_set_start_info(struct timer_list *timer)
{
+ if (likely(!timer_stats_active))
+ return;
__timer_stats_timer_set_start_info(timer, __builtin_return_address(0));
}