path: root/include/vdso
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authorAhmed S. Darwish <a.darwish@linutronix.de>2020-03-09 18:15:29 +0000
committerThomas Gleixner <tglx@linutronix.de>2020-03-19 09:45:08 +0100
commit2c8bd58812ee3dbf0d78b566822f7eacd34bdd7b (patch)
treef0e9ed7bef60befd8c82eeecb6e8a459b8f980a9 /include/vdso
parent048495eb28939996261754215b1d450756978499 (diff)
time/sched_clock: Expire timer in hardirq context
To minimize latency, PREEMPT_RT kernels expires hrtimers in preemptible softirq context by default. This can be overriden by marking the timer's expiry with HRTIMER_MODE_HARD. sched_clock_timer is missing this annotation: if its callback is preempted and the duration of the preemption exceeds the wrap around time of the underlying clocksource, sched clock will get out of sync. Mark the sched_clock_timer for expiry in hard interrupt context. Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20200309181529.26558-1-a.darwish@linutronix.de
Diffstat (limited to 'include/vdso')
0 files changed, 0 insertions, 0 deletions

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