mirror of
https://github.com/torvalds/linux.git
synced 2024-11-26 22:21:42 +00:00
23c296fb7e
Add frequency, mperf, aperf and tsc in the trace. This can be used to debug and tune the performance of AMD P-state driver. Use the time difference between amd_pstate_update to calculate CPU frequency. There could be sleep in arch_freq_get_on_cpu, so do not use it here. Signed-off-by: Jinzhou Su <Jinzhou.Su@amd.com> Co-developed-by: Huang Rui <ray.huang@amd.com> Signed-off-by: Huang Rui <ray.huang@amd.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
98 lines
2.3 KiB
C
98 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* amd-pstate-trace.h - AMD Processor P-state Frequency Driver Tracer
|
|
*
|
|
* Copyright (C) 2021 Advanced Micro Devices, Inc. All Rights Reserved.
|
|
*
|
|
* Author: Huang Rui <ray.huang@amd.com>
|
|
*/
|
|
|
|
#if !defined(_AMD_PSTATE_TRACE_H) || defined(TRACE_HEADER_MULTI_READ)
|
|
#define _AMD_PSTATE_TRACE_H
|
|
|
|
#include <linux/cpufreq.h>
|
|
#include <linux/tracepoint.h>
|
|
#include <linux/trace_events.h>
|
|
|
|
#undef TRACE_SYSTEM
|
|
#define TRACE_SYSTEM amd_cpu
|
|
|
|
#undef TRACE_INCLUDE_FILE
|
|
#define TRACE_INCLUDE_FILE amd-pstate-trace
|
|
|
|
#define TPS(x) tracepoint_string(x)
|
|
|
|
TRACE_EVENT(amd_pstate_perf,
|
|
|
|
TP_PROTO(unsigned long min_perf,
|
|
unsigned long target_perf,
|
|
unsigned long capacity,
|
|
u64 freq,
|
|
u64 mperf,
|
|
u64 aperf,
|
|
u64 tsc,
|
|
unsigned int cpu_id,
|
|
bool changed,
|
|
bool fast_switch
|
|
),
|
|
|
|
TP_ARGS(min_perf,
|
|
target_perf,
|
|
capacity,
|
|
freq,
|
|
mperf,
|
|
aperf,
|
|
tsc,
|
|
cpu_id,
|
|
changed,
|
|
fast_switch
|
|
),
|
|
|
|
TP_STRUCT__entry(
|
|
__field(unsigned long, min_perf)
|
|
__field(unsigned long, target_perf)
|
|
__field(unsigned long, capacity)
|
|
__field(unsigned long long, freq)
|
|
__field(unsigned long long, mperf)
|
|
__field(unsigned long long, aperf)
|
|
__field(unsigned long long, tsc)
|
|
__field(unsigned int, cpu_id)
|
|
__field(bool, changed)
|
|
__field(bool, fast_switch)
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->min_perf = min_perf;
|
|
__entry->target_perf = target_perf;
|
|
__entry->capacity = capacity;
|
|
__entry->freq = freq;
|
|
__entry->mperf = mperf;
|
|
__entry->aperf = aperf;
|
|
__entry->tsc = tsc;
|
|
__entry->cpu_id = cpu_id;
|
|
__entry->changed = changed;
|
|
__entry->fast_switch = fast_switch;
|
|
),
|
|
|
|
TP_printk("amd_min_perf=%lu amd_des_perf=%lu amd_max_perf=%lu freq=%llu mperf=%llu aperf=%llu tsc=%llu cpu_id=%u changed=%s fast_switch=%s",
|
|
(unsigned long)__entry->min_perf,
|
|
(unsigned long)__entry->target_perf,
|
|
(unsigned long)__entry->capacity,
|
|
(unsigned long long)__entry->freq,
|
|
(unsigned long long)__entry->mperf,
|
|
(unsigned long long)__entry->aperf,
|
|
(unsigned long long)__entry->tsc,
|
|
(unsigned int)__entry->cpu_id,
|
|
(__entry->changed) ? "true" : "false",
|
|
(__entry->fast_switch) ? "true" : "false"
|
|
)
|
|
);
|
|
|
|
#endif /* _AMD_PSTATE_TRACE_H */
|
|
|
|
/* This part must be outside protection */
|
|
#undef TRACE_INCLUDE_PATH
|
|
#define TRACE_INCLUDE_PATH .
|
|
|
|
#include <trace/define_trace.h>
|