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trace: Add new trace event for DCVSH

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Add trace to capture DCVSH updates to sched.

Change-Id: I57201ab0e41931cffe121c6ab18c46b1f26f250e
Signed-off-by: Taniya Das <tdas@codeaurora.org>
This commit is contained in:
Taniya Das 2019-08-26 21:21:21 +05:30 • committed by Naveen Yadav
commit dcedf3c538
2 changed files with 40 additions and 0 deletions
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5
drivers/cpufreq/qcom-cpufreq-hw.c
View file

@ -18,6 +18,9 @@
#include <linux/sched.h>
#include <linux/slab.h>
#define CREATE_TRACE_POINTS
#include <trace/events/dcvsh.h>
#define LUT_MAX_ENTRIES 40U
#define LUT_SRC GENMASK(31, 30)
#define LUT_L_VAL GENMASK(7, 0)
@ -106,6 +109,8 @@ static unsigned long limits_mitigation_notify(struct cpufreq_qcom *c)
else {
sched_update_cpu_freq_min_max(&c->related_cpus, 0,
c->table[i].frequency);
trace_dcvsh_freq(cpumask_first(&c->related_cpus),
c->table[i].frequency);
return c->table[i].frequency;
}
}

35
include/trace/events/dcvsh.h Normal file
View file

@ -0,0 +1,35 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2019, The Linux Foundation. All rights reserved.
*/
#undef TRACE_SYSTEM
#define TRACE_SYSTEM dcvsh
#if !defined(_TRACE_DCVSH_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_DCVSH_H
#include <linux/tracepoint.h>
TRACE_EVENT(dcvsh_freq,
TP_PROTO(unsigned long cpu, unsigned long freq),
TP_ARGS(cpu, freq),
TP_STRUCT__entry(
__field(unsigned long, cpu)
__field(unsigned long, freq)
),
TP_fast_assign(
__entry->cpu = cpu;
__entry->freq = freq;
),
TP_printk("cpu:%lu max frequency:%lu", __entry->cpu, __entry->freq)
);
#endif /* _TRACE_DCVSH_H */
/* This part must be outside protection */
#include <trace/define_trace.h>