hrtimer: Ignore slack time for RT tasks in schedule_hrtimeout_range()

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While in theory the timer can be triggered before expires + delta, for the
cases of RT tasks they really have no business giving any lenience for
extra slack time, so override any passed value by the user and always use
zero for schedule_hrtimeout_range() calls. Furthermore, this is similar to
what the nanosleep(2) family already does with current->timer_slack_ns.

Signed-off-by: Davidlohr Bueso <dave@stgolabs.net>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20230123173206.6764-3-dave@stgolabs.net

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Davidlohr Bueso 2023-01-23 09:32:06 -08:00 • committed by Thomas Gleixner

parent c14fd3dcac

commit 0c52310f26

1 changed files with 11 additions and 3 deletions

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kernel/time/hrtimer.c

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