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| author |   Tejun Heo <tj@kernel.org> | 2026-04-24 14:31:35 -1000 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2026-04-24 14:31:35 -1000 |
| commit | da2d81b4118a74e65d2335e221a38d665902a98c (patch) | |
| tree | a9200c1da08a6977a8c41f0872716898e1a67413 /tools/perf/scripts/python | |
| parent | sched_ext: Guard scx_dsq_move() against NULL kit->dsq after failed iter_new (diff) | |
sched_ext: Skip tasks with stale task_rq in bypass_lb_cpu()
bypass_lb_cpu() transfers tasks between per-CPU bypass DSQs without
migrating them - task_cpu() only updates when the donee later consumes the
task via move_remote_task_to_local_dsq(). If the LB timer fires again before
consumption and the new DSQ becomes a donor, @p is still on the previous CPU
and task_rq(@p) != donor_rq. @p can't be moved without its own rq locked.
Skip such tasks.
Fixes: 95d1df610cdc ("sched_ext: Implement load balancer for bypass mode")
Cc: stable@vger.kernel.org # v6.19+
Reported-by: Chris Mason <clm@meta.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Andrea Righi <arighi@nvidia.com>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions