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authorEric W. Biederman <ebiederm@xmission.com>2020-02-28 20:09:46 +0300
committerThomas Gleixner <tglx@linutronix.de>2020-03-01 13:21:44 +0300
commitbeb41d9cbe4179058634e05d60235b6155c7b6c6 (patch)
tree916790d490bfe9ad70d131eea03b3672d61f0434 /kernel/time
parent60f2ceaa8111d9ec51af87bde4a6809f2b3235e4 (diff)
downloadlinux-beb41d9cbe4179058634e05d60235b6155c7b6c6.tar.xz
posix-cpu-timers: Pass the task into arm_timer()
The task has been already computed to take siglock before calling arm_timer. So pass the benefit of that labor into arm_timer(). Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/8736auvdt1.fsf@x220.int.ebiederm.org
Diffstat (limited to 'kernel/time')
-rw-r--r--kernel/time/posix-cpu-timers.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/kernel/time/posix-cpu-timers.c b/kernel/time/posix-cpu-timers.c
index 40c2d8396bb9..ef936c5a910b 100644
--- a/kernel/time/posix-cpu-timers.c
+++ b/kernel/time/posix-cpu-timers.c
@@ -482,12 +482,11 @@ void posix_cpu_timers_exit_group(struct task_struct *tsk)
* Insert the timer on the appropriate list before any timers that
* expire later. This must be called with the sighand lock held.
*/
-static void arm_timer(struct k_itimer *timer)
+static void arm_timer(struct k_itimer *timer, struct task_struct *p)
{
int clkidx = CPUCLOCK_WHICH(timer->it_clock);
struct cpu_timer *ctmr = &timer->it.cpu;
u64 newexp = cpu_timer_getexpires(ctmr);
- struct task_struct *p = ctmr->task;
struct posix_cputimer_base *base;
if (CPUCLOCK_PERTHREAD(timer->it_clock))
@@ -660,7 +659,7 @@ static int posix_cpu_timer_set(struct k_itimer *timer, int timer_flags,
*/
cpu_timer_setexpires(ctmr, new_expires);
if (new_expires != 0 && val < new_expires) {
- arm_timer(timer);
+ arm_timer(timer, p);
}
unlock_task_sighand(p, &flags);
@@ -980,7 +979,7 @@ static void posix_cpu_timer_rearm(struct k_itimer *timer)
/*
* Now re-arm for the new expiry time.
*/
- arm_timer(timer);
+ arm_timer(timer, p);
unlock_task_sighand(p, &flags);
}