The following commit has been merged into the timers/core branch of tip: Commit-ID: 197ba902548386e966bb7848d3148a130bb01bd9 Gitweb: https://git.kernel.org/tip/197ba902548386e966bb7848d3148a130bb01bd9 Author: Eric W. Biederman <ebiederm@xxxxxxxxxxxx> AuthorDate: Fri, 28 Feb 2020 11:09:46 -06:00 Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx> CommitterDate: Sat, 29 Feb 2020 21:44:46 +01:00 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@xxxxxxxxxxxx> Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> --- kernel/time/posix-cpu-timers.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/kernel/time/posix-cpu-timers.c b/kernel/time/posix-cpu-timers.c index 40c2d83..ef936c5 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); }
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