[patch 12/44] itimers: Use quick sample function

Thomas Gleixner
2019-08-19T15:48:26Z

get_itimer() locks sighand lock and checks whether the timer is already
expired. If it is not expired then the thread group cputime accounting is
already enabled. Use the sampling function not the one which is meant for
starting a timer.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
kernel/time/itimer.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/kernel/time/itimer.c
+++ b/kernel/time/itimer.c
@@ -58,7 +58,7 @@ static void get_cpu_itimer(struct task_s
struct task_cputime cputime;
u64 t;

- thread_group_cputimer(tsk, &cputime);
+ thread_group_sample_cputime(tsk, &cputime);
if (clock_id == CPUCLOCK_PROF)
t = cputime.utime + cputime.stime;
else