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authorValentin Schneider <[email protected]>2021-08-23 12:16:59 +0100
committerPeter Zijlstra <[email protected]>2021-10-05 15:51:30 +0200
commitefd984c481abb516fab8bafb25bf41fd9397a43c (patch)
tree456c643db81f5548a2d0395a234f5c5aee789db9 /scripts/gdb
parent9e1ff307c779ce1f0f810c7ecce3d95bbae40896 (diff)
sched/fair: Add NOHZ balancer flag for nohz.next_balance updates
A following patch will trigger NOHZ idle balances as a means to update nohz.next_balance. Vincent noted that blocked load updates can have non-negligible overhead, which should be avoided if the intent is to only update nohz.next_balance. Add a new NOHZ balance kick flag, NOHZ_NEXT_KICK. Gate NOHZ blocked load update by the presence of NOHZ_STATS_KICK - currently all NOHZ balance kicks will have the NOHZ_STATS_KICK flag set, so no change in behaviour is expected. Suggested-by: Vincent Guittot <[email protected]> Signed-off-by: Valentin Schneider <[email protected]> Signed-off-by: Peter Zijlstra (Intel) <[email protected]> Reviewed-by: Vincent Guittot <[email protected]> Link: https://lkml.kernel.org/r/[email protected]
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