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authorMel Gorman <mgorman@techsingularity.net>2020-11-30 14:40:20 +0000
committerIngo Molnar <mingo@kernel.org>2020-12-11 10:30:38 +0100
commit13d5a5e9f9b8515da3c04305ae1bb03ab91be7a7 (patch)
tree4f4a6eddb26f5a8d20bad84e7b09ecfa2160791f /lib
parent59a74b1544e1c07ffbfd1edff5fd73ce7d3d3146 (diff)
sched/fair: Clear SMT siblings after determining the core is not idle
The clearing of SMT siblings from the SIS mask before checking for an idle core is a small but unnecessary cost. Defer the clearing of the siblings until the scan moves to the next potential target. The cost of this was not measured as it is borderline noise but it should be self-evident. Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Vincent Guittot <vincent.guittot@linaro.org> Link: https://lkml.kernel.org/r/20201130144020.GS3371@techsingularity.net
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