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sched/walt: Add window rollover trace event

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

Change-Id: I4a2e7291f31a1ac50144086eaf6ae920a07ca545
Signed-off-by: Lingutla Chandrasekhar <clingutla@codeaurora.org>
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
This commit is contained in:
Lingutla Chandrasekhar 2020-11-19 20:52:54 +05:30 committed by Rishabh Bhatnagar
parent 89a180556f
commit ceda5e2445
2 changed files with 20 additions and 1 deletions
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17
kernel/sched/walt/trace.h
View File

@ -1088,6 +1088,23 @@ TRACE_EVENT(sched_enq_deq_task,
__entry->cpus_allowed, __entry->demand,
__entry->pred_demand)
);
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 /* _TRACE_WALT_H */
#undef TRACE_INCLUDE_PATH

4
kernel/sched/walt/walt.c
View File

@ -2159,8 +2159,10 @@ 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,
wrq->window_start);
if (result == old_window_start)
if (result == old_window_start) {
walt_irq_work_queue(&walt_cpufreq_irq_work);
trace_walt_window_rollover(wrq->window_start);
}
}
/* Reflect task activity on its demand and cpu's busy time statistics */