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author | Vincent Guittot | 2021-01-07 11:33:24 +0100 |
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committer | Peter Zijlstra | 2021-01-14 11:20:11 +0100 |
commit | 8a41dfcda7a32ed4435c00d98a9dc7156b08b671 (patch) | |
tree | 5458b36c971aadd7c3a29e4a30678d88c5c5db97 /lib | |
parent | fc488ffd4297f661b3e9d7450dcdb9089a53df7c (diff) |
sched/fair: Don't set LBF_ALL_PINNED unnecessarily
Setting LBF_ALL_PINNED during active load balance is only valid when there
is only 1 running task on the rq otherwise this ends up increasing the
balance interval whereas other tasks could migrate after the next interval
once they become cache-cold as an example.
LBF_ALL_PINNED flag is now always set it by default. It is then cleared
when we find one task that can be pulled when calling detach_tasks() or
during active migration.
Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Valentin Schneider <valentin.schneider@arm.com>
Acked-by: Mel Gorman <mgorman@suse.de>
Link: https://lkml.kernel.org/r/20210107103325.30851-3-vincent.guittot@linaro.org
Diffstat (limited to 'lib')
0 files changed, 0 insertions, 0 deletions