Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fix from Thomas Gleixner:
"A single fix for a ~10 years old problem which causes high resolution
timers to stop after a CPU unplug/plug cycle due to a stale flag in
the per CPU hrtimer base struct.
Paul McKenney was hunting this for about a year, but the heisenbug
nature made it resistant against debug attempts for quite some time"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
hrtimer: Reset hrtimer cpu base proper on CPU hotplug
+3
+3
kernel/time/hrtimer.c
+3
kernel/time/hrtimer.c
···
655
655
static inline void hrtimer_init_hres(struct hrtimer_cpu_base *base)
656
656
{
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657
base->expires_next = KTIME_MAX;
658
+
base->hang_detected = 0;
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base->hres_active = 0;
660
+
base->next_timer = NULL;
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661
}
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662
661
663
/*
···
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1589
timerqueue_init_head(&cpu_base->clock_base[i].active);
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}
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1592
+
cpu_base->active_bases = 0;
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1593
cpu_base->cpu = cpu;
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hrtimer_init_hres(cpu_base);
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return 0;