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sched_ext: Add an event, SCX_EV_BYPASS_ACTIVATE

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Add a core event, SCX_EV_BYPASS_ACTIVATE, which represents how many
times the bypass mode has been triggered.

Signed-off-by: Changwoo Min <changwoo@igalia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Changwoo Min 2025-02-04 14:20:52 +09:00 committed by Tejun Heo
parent 824d4f2dce
commit 4f7a38c7c9
1 changed files with 8 additions and 0 deletions
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8
kernel/sched/ext.c
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@ -1467,6 +1467,11 @@ struct scx_event_stats {
* is dispatched to a local DSQ when exiting.
*/
u64 SCX_EV_ENQ_SKIP_EXITING;
/*
* The number of times the bypassing mode has been activated.
*/
u64 SCX_EV_BYPASS_ACTIVATE;
};
/*
@ -4399,6 +4404,7 @@ static void scx_ops_bypass(bool bypass)
WARN_ON_ONCE(scx_ops_bypass_depth <= 0);
if (scx_ops_bypass_depth != 1)
goto unlock;
scx_add_event(SCX_EV_BYPASS_ACTIVATE, 1);
} else {
scx_ops_bypass_depth--;
WARN_ON_ONCE(scx_ops_bypass_depth < 0);
@ -4994,6 +5000,7 @@ static void scx_dump_state(struct scx_exit_info *ei, size_t dump_len)
scx_dump_event(s, &events, SCX_EV_DISPATCH_LOCAL_DSQ_OFFLINE);
scx_dump_event(s, &events, SCX_EV_DISPATCH_KEEP_LAST);
scx_dump_event(s, &events, SCX_EV_ENQ_SKIP_EXITING);
scx_dump_event(s, &events, SCX_EV_BYPASS_ACTIVATE);
if (seq_buf_has_overflowed(&s) && dump_len >= sizeof(trunc_marker))
memcpy(ei->dump + dump_len - sizeof(trunc_marker),
@ -7131,6 +7138,7 @@ __bpf_kfunc void scx_bpf_events(struct scx_event_stats *events,
scx_agg_event(&e_sys, e_cpu, SCX_EV_DISPATCH_LOCAL_DSQ_OFFLINE);
scx_agg_event(&e_sys, e_cpu, SCX_EV_DISPATCH_KEEP_LAST);
scx_agg_event(&e_sys, e_cpu, SCX_EV_ENQ_SKIP_EXITING);
scx_agg_event(&e_sys, e_cpu, SCX_EV_BYPASS_ACTIVATE);
}
/*