Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
authored by
Eric W. Biederman
and committed by
Thomas Gleixner
beb41d9c
60f2ceaa
+3
-4
+3
-4
kernel/time/posix-cpu-timers.c
+3
-4
kernel/time/posix-cpu-timers.c
···
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* Insert the timer on the appropriate list before any timers that
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* expire later. This must be called with the sighand lock held.
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*/
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-
static void arm_timer(struct k_itimer *timer)
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static void arm_timer(struct k_itimer *timer, struct task_struct *p)
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{
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int clkidx = CPUCLOCK_WHICH(timer->it_clock);
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struct cpu_timer *ctmr = &timer->it.cpu;
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u64 newexp = cpu_timer_getexpires(ctmr);
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struct task_struct *p = ctmr->task;
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struct posix_cputimer_base *base;
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if (CPUCLOCK_PERTHREAD(timer->it_clock))
···
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*/
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cpu_timer_setexpires(ctmr, new_expires);
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if (new_expires != 0 && val < new_expires) {
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arm_timer(timer);
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arm_timer(timer, p);
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}
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unlock_task_sighand(p, &flags);
···
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/*
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* Now re-arm for the new expiry time.
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*/
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arm_timer(timer);
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arm_timer(timer, p);
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unlock_task_sighand(p, &flags);
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}
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