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| author | Huang Rui <ray.huang@amd.com> | 2021-12-24 09:05:03 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2021-12-30 18:51:39 +0100 |
| commit | 60e10f896dbf6d78f912e4972081bd4119131376 (patch) | |
| tree | ae87ffc0d81905b32c729894dee58f0ce172613e /drivers/cpufreq/amd-pstate-trace.h | |
| parent | e059c184da47e92c6236f26b0fdaf9e92f0d55b5 (diff) | |
| download | lwn-60e10f896dbf6d78f912e4972081bd4119131376.tar.gz lwn-60e10f896dbf6d78f912e4972081bd4119131376.zip | |
cpufreq: amd-pstate: Add trace for AMD P-State module
Add trace event to monitor the performance value changes which is
controlled by cpu governors.
Signed-off-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpufreq/amd-pstate-trace.h')
| -rw-r--r-- | drivers/cpufreq/amd-pstate-trace.h | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/drivers/cpufreq/amd-pstate-trace.h b/drivers/cpufreq/amd-pstate-trace.h new file mode 100644 index 000000000000..647505957d4f --- /dev/null +++ b/drivers/cpufreq/amd-pstate-trace.h @@ -0,0 +1,77 @@ +/* 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, + unsigned int cpu_id, + bool changed, + bool fast_switch + ), + + TP_ARGS(min_perf, + target_perf, + capacity, + cpu_id, + changed, + fast_switch + ), + + TP_STRUCT__entry( + __field(unsigned long, min_perf) + __field(unsigned long, target_perf) + __field(unsigned long, capacity) + __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->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 cpu_id=%u changed=%s fast_switch=%s", + (unsigned long)__entry->min_perf, + (unsigned long)__entry->target_perf, + (unsigned long)__entry->capacity, + (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> |