diff options
| author | Andrea Righi <arighi@nvidia.com> | 2026-05-09 20:07:28 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2026-05-19 12:17:38 +0200 |
| commit | bf6aa722198d3c06e4236e8c5a480f30a64e1513 (patch) | |
| tree | 3cd0614cf1219f00de3ac990f84612630424b943 /scripts/basic | |
| parent | 25a32e400a14009601c0a727643057f5515152df (diff) | |
sched/fair: Reject misfit pulls onto busy SMT siblings on asym-capacity
When SD_ASYM_CPUCAPACITY load balancing considers pulling a misfit task,
capacity_of(dst_cpu) can overstate available compute if the SMT sibling is
busy: the core does not deliver its full nominal capacity.
If SMT is active and dst_cpu is not on a fully idle core, skip this
destination so we do not migrate a misfit expecting a capacity upgrade we
cannot actually provide.
Reported-by: Felix Abecassis <fabecassis@nvidia.com>
Signed-off-by: Andrea Righi <arighi@nvidia.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Vincent Guittot <vincent.guittot@linaro.org>
Link: https://patch.msgid.link/20260509180955.1840064-5-arighi@nvidia.com
Diffstat (limited to 'scripts/basic')
0 files changed, 0 insertions, 0 deletions