diff options
| author | Vineeth Pillai <viremana@linux.microsoft.com> | 2020-11-17 18:19:38 -0500 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2021-05-12 11:43:29 +0200 |
| commit | 8039e96fcc1de30d5bcaf05da9ca2de46a800826 (patch) | |
| tree | bb88e1ba8c783a34c54be34b5c33ccc405fac444 /tools/perf/scripts/python/export-to-sqlite.py | |
| parent | 539f65125d20aacab54d02d77f10a839f45b09dc (diff) | |
sched/fair: Fix forced idle sibling starvation corner case
If there is only one long running local task and the sibling is
forced idle, it might not get a chance to run until a schedule
event happens on any cpu in the core.
So we check for this condition during a tick to see if a sibling
is starved and then give it a chance to schedule.
Signed-off-by: Vineeth Pillai <viremana@linux.microsoft.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Don Hiatt <dhiatt@digitalocean.com>
Tested-by: Hongyu Ning <hongyu.ning@linux.intel.com>
Tested-by: Vincent Guittot <vincent.guittot@linaro.org>
Link: https://lkml.kernel.org/r/20210422123308.617407840@infradead.org
Diffstat (limited to 'tools/perf/scripts/python/export-to-sqlite.py')
0 files changed, 0 insertions, 0 deletions