[RFC PATCH 5/6] hrtimer: record more real start_site for timer_stats

[Yong Zhang <yong.zhang0@gmail.com>]

From: Yong Zhang <yong.zhang@windriver.com>

Most call sites are showed as hrtimer_start_range_ns(). This gives us
not enough info about the start_site. Then call
timer_stats_hrtimer_set_start_info() in hrtimer_start*() to
record the upper caller.

Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
---
 kernel/hrtimer.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index 2b79ab4..1820a83 100644
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -1014,6 +1014,7 @@ int __hrtimer_start_range_ns(struct hrtimer *timer, ktime_t tim,
 int hrtimer_start_range_ns(struct hrtimer *timer, ktime_t tim,
 		unsigned long delta_ns, const enum hrtimer_mode mode)
 {
+	timer_stats_hrtimer_set_start_info(timer);
 	return __hrtimer_start_range_ns(timer, tim, delta_ns, mode, 1);
 }
 EXPORT_SYMBOL_GPL(hrtimer_start_range_ns);
@@ -1031,6 +1032,7 @@ EXPORT_SYMBOL_GPL(hrtimer_start_range_ns);
 int
 hrtimer_start(struct hrtimer *timer, ktime_t tim, const enum hrtimer_mode mode)
 {
+	timer_stats_hrtimer_set_start_info(timer);
 	return __hrtimer_start_range_ns(timer, tim, 0, mode, 1);
 }
 EXPORT_SYMBOL_GPL(hrtimer_start);
-- 
1.7.0.4