diff options
| author | Tejun Heo <tj@kernel.org> | 2024-07-12 08:20:33 -1000 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2024-07-12 08:20:33 -1000 |
| commit | 1edab907b57d42e2dcf4c16a00185a89209e8700 (patch) | |
| tree | 96b424ec5a976d00bc4634416b597cb4a0c7d465 /tools/sched_ext/scx_qmap.c | |
| parent | 5b26f7b920f76b2b9cc398c252a9e35e44bf5bb9 (diff) | |
sched_ext/scx_qmap: Pick idle CPU for direct dispatch on !wakeup enqueues
Because there was no way to directly dispatch to the local DSQ of a remote
CPU from ops.enqueue(), scx_qmap skipped looking for an idle CPU on !wakeup
enqueues. This restriction was removed and sched_ext now allows
SCX_DSQ_LOCAL_ON verdicts for direct dispatches.
Factor out pick_direct_dispatch_cpu() from ops.select_cpu() and use it to
direct dispatch from ops.enqueue() on !wakeup enqueues.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: David Vernet <void@manifault.com>
Cc: Dan Schatzberg <schatzberg.dan@gmail.com>
Cc: Changwoo Min <changwoo@igalia.com>
Cc: Andrea Righi <righi.andrea@gmail.com>
Diffstat (limited to 'tools/sched_ext/scx_qmap.c')
| -rw-r--r-- | tools/sched_ext/scx_qmap.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/tools/sched_ext/scx_qmap.c b/tools/sched_ext/scx_qmap.c index 304f0488a386..c9ca30d62b2b 100644 --- a/tools/sched_ext/scx_qmap.c +++ b/tools/sched_ext/scx_qmap.c @@ -116,10 +116,11 @@ int main(int argc, char **argv) long nr_enqueued = skel->bss->nr_enqueued; long nr_dispatched = skel->bss->nr_dispatched; - printf("stats : enq=%lu dsp=%lu delta=%ld reenq=%"PRIu64" deq=%"PRIu64" core=%"PRIu64"\n", + printf("stats : enq=%lu dsp=%lu delta=%ld reenq=%"PRIu64" deq=%"PRIu64" core=%"PRIu64" enq_ddsp=%"PRIu64"\n", nr_enqueued, nr_dispatched, nr_enqueued - nr_dispatched, skel->bss->nr_reenqueued, skel->bss->nr_dequeued, - skel->bss->nr_core_sched_execed); + skel->bss->nr_core_sched_execed, + skel->bss->nr_ddsp_from_enq); if (__COMPAT_has_ksym("scx_bpf_cpuperf_cur")) printf("cpuperf: cur min/avg/max=%u/%u/%u target min/avg/max=%u/%u/%u\n", skel->bss->cpuperf_min, |