torture: Make torture_stutter() use hrtimer

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The torture_stutter() function uses schedule_timeout_interruptible()
to time the stutter duration, but this can miss race conditions due to
its being time-synchronized with everything else that is based on the
timer wheels.  This commit therefore converts torture_stutter() to use
the high-resolution timers via schedule_hrtimeout(), and also to fuzz
the stutter interval.  While in the area, this commit also limits the
spin-loop portion of the stutter_wait() function's wait loop to two
jiffies, down from about one second.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

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Paul E. McKenney 2020-09-02 21:08:41 -07:00

parent 19012b786e

commit fda5ba9ed2

1 changed files with 12 additions and 5 deletions

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kernel/torture.c

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