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Commit 9ca1bd50 authored by Lingutla Chandrasekhar's avatar Lingutla Chandrasekhar
Browse files

walt: Add window rollover trace event 



Add window rollover trace event to track cpu's WALT window rollover.

Change-Id: I4a2e7291f31a1ac50144086eaf6ae920a07ca545
Signed-off-by: default avatarLingutla Chandrasekhar <clingutla@codeaurora.org>
parent 750e1435

include/trace/events/walt.h

+19 −1
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0-only */

/*

 * Copyright (c) 2017-2019, The Linux Foundation. All rights reserved.

 * Copyright (c) 2017-2020, The Linux Foundation. All rights reserved.

 */



#ifdef CONFIG_SCHED_WALT
@@ -538,4 +538,22 @@ TRACE_EVENT(sched_load_to_gov, 
		__entry->nt_ps, __entry->grp_nt_ps, __entry->pl, __entry->load,

		__entry->big_task_rotation, __entry->user_hint)

);



TRACE_EVENT(walt_window_rollover,



	TP_PROTO(u64 window_start),



	TP_ARGS(window_start),



	TP_STRUCT__entry(

		__field(u64, window_start)

	),



	TP_fast_assign(

		__entry->window_start = window_start;

	),



	TP_printk("window_start=%llu", __entry->window_start)

);



#endif

kernel/sched/walt.c

+3 −1
Original line number Diff line number Diff line
@@ -2077,8 +2077,10 @@ static inline void run_walt_irq_work(u64 old_window_start, struct rq *rq) 


	result = atomic64_cmpxchg(&walt_irq_work_lastq_ws, old_window_start,

				   rq->window_start);

	if (result == old_window_start)

	if (result == old_window_start) {

		walt_irq_work_queue(&walt_cpufreq_irq_work);

		trace_walt_window_rollover(rq->window_start);

	}

}



/* Reflect task activity on its demand and cpu's busy time statistics */