Commit 4f7a38c7 authored by Changwoo Min's avatar Changwoo Min Committed by Tejun Heo
Browse files

sched_ext: Add an event, SCX_EV_BYPASS_ACTIVATE 



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

Signed-off-by: default avatarChangwoo Min <changwoo@igalia.com>
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
parent 824d4f2d

kernel/sched/ext.c

+8 −0
Original line number Diff line number Diff line
@@ -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);

	}



	/*