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Groups > linux.kernel > #1607838
| From | John Stultz <john.stultz@linaro.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH resend] timers, sched_clock: Update timeout for clock wrap |
| Date | 2017-03-23 20:40 +0100 |
| Message-ID | <togKv-6RO-55@gated-at.bofh.it> (permalink) |
| References | <tbLCr-1kS-47@gated-at.bofh.it> <tguUi-8v7-11@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Thu, Mar 2, 2017 at 1:02 AM, David Engraf <david.engraf@sysgo.com> wrote: > The scheduler clock framework may not use the correct timeout for the clock > wrap. This happens when a new clock driver calls sched_clock_register() > after the kernel called sched_clock_postinit(). In this case the clock wrap > timeout is too long thus sched_clock_poll() is called too late and the clock > already wrapped. > > On my ARM system the scheduler was no longer scheduling any other task than > the idle task because the sched_clock() wrapped. > > Signed-off-by: David Engraf <david.engraf@sysgo.com> Thanks for sending this in! It looks sane, so I've queued it. thanks -john
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Re: [PATCH resend] timers, sched_clock: Update timeout for clock wrap John Stultz <john.stultz@linaro.org> - 2017-03-23 20:40 +0100
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