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| author | Ricardo Neri <ricardo.neri-calderon@linux.intel.com> | 2021-09-11 03:18:19 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2021-10-05 15:52:06 +0200 |
| commit | 4006a72bdd93b1ffedc2bd8646dee18c822a2c26 (patch) | |
| tree | b7503326c996aa67714a07308c02d4c2e0557ece /.get_maintainer.ignore | |
| parent | sched/fair: Carve out logic to mark a group for asymmetric packing (diff) | |
| download | linux-4006a72bdd93b1ffedc2bd8646dee18c822a2c26.tar.xz linux-4006a72bdd93b1ffedc2bd8646dee18c822a2c26.zip | |
sched/fair: Consider SMT in ASYM_PACKING load balance
When deciding to pull tasks in ASYM_PACKING, it is necessary not only to
check for the idle state of the destination CPU, dst_cpu, but also of
its SMT siblings.
If dst_cpu is idle but its SMT siblings are busy, performance suffers
if it pulls tasks from a medium priority CPU that does not have SMT
siblings.
Implement asym_smt_can_pull_tasks() to inspect the state of the SMT
siblings of both dst_cpu and the CPUs in the candidate busiest group.
Signed-off-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Reviewed-by: Len Brown <len.brown@intel.com>
Reviewed-by: Vincent Guittot <vincent.guittot@linaro.org>
Link: https://lkml.kernel.org/r/20210911011819.12184-7-ricardo.neri-calderon@linux.intel.com
Diffstat (limited to '.get_maintainer.ignore')
0 files changed, 0 insertions, 0 deletions