Searched hist:ab1b7880dec86bbdacd31a4c5cf104de4cf903f2 (Results 1 – 2 of 2) sorted by relevance
| /openbmc/linux/kernel/ |
| H A D | torture.c | diff ab1b7880dec86bbdacd31a4c5cf104de4cf903f2 Tue Sep 22 18:42:42 CDT 2020 Paul E. McKenney <paulmck@kernel.org> rcutorture: Make stutter_wait() caller restore priority
Currently, stutter_wait() will happily spin waiting for the stutter
interval to end even if the caller is running at a real-time priority
level. This could starve normal-priority tasks for no good reason. This
commit therefore drops the calling task's priority to SCHED_OTHER MAX_NICE
if stutter_wait() needs to wait. But when it waits, stutter_wait()
returns true, which allows the caller to restore the priority if needed.
Callers that were already running at SCHED_OTHER MAX_NICE obviously
do not need any changes, but this commit also restores priority for
higher-priority callers.
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
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| /openbmc/linux/kernel/rcu/ |
| H A D | rcutorture.c | diff ab1b7880dec86bbdacd31a4c5cf104de4cf903f2 Tue Sep 22 18:42:42 CDT 2020 Paul E. McKenney <paulmck@kernel.org> rcutorture: Make stutter_wait() caller restore priority
Currently, stutter_wait() will happily spin waiting for the stutter
interval to end even if the caller is running at a real-time priority
level. This could starve normal-priority tasks for no good reason. This
commit therefore drops the calling task's priority to SCHED_OTHER MAX_NICE
if stutter_wait() needs to wait. But when it waits, stutter_wait()
returns true, which allows the caller to restore the priority if needed.
Callers that were already running at SCHED_OTHER MAX_NICE obviously
do not need any changes, but this commit also restores priority for
higher-priority callers.
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
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