stat.h 4.0 KB
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __PERF_STATS_H
#define __PERF_STATS_H

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#include <linux/types.h>
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#include <stdio.h>
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#include "xyarray.h"
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#include "rblist.h"
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struct stats
{
	double n, mean, M2;
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	u64 max, min;
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};

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enum perf_stat_evsel_id {
	PERF_STAT_EVSEL_ID__NONE = 0,
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	PERF_STAT_EVSEL_ID__CYCLES_IN_TX,
	PERF_STAT_EVSEL_ID__TRANSACTION_START,
	PERF_STAT_EVSEL_ID__ELISION_START,
	PERF_STAT_EVSEL_ID__CYCLES_IN_TX_CP,
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	PERF_STAT_EVSEL_ID__TOPDOWN_TOTAL_SLOTS,
	PERF_STAT_EVSEL_ID__TOPDOWN_SLOTS_ISSUED,
	PERF_STAT_EVSEL_ID__TOPDOWN_SLOTS_RETIRED,
	PERF_STAT_EVSEL_ID__TOPDOWN_FETCH_BUBBLES,
	PERF_STAT_EVSEL_ID__TOPDOWN_RECOVERY_BUBBLES,
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	PERF_STAT_EVSEL_ID__SMI_NUM,
	PERF_STAT_EVSEL_ID__APERF,
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	PERF_STAT_EVSEL_ID__MAX,
};

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struct perf_stat_evsel {
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	struct stats		 res_stats[3];
	enum perf_stat_evsel_id	 id;
	u64			*group_data;
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};

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enum aggr_mode {
	AGGR_NONE,
	AGGR_GLOBAL,
	AGGR_SOCKET,
	AGGR_CORE,
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	AGGR_THREAD,
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	AGGR_UNSET,
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};

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enum {
	CTX_BIT_USER	= 1 << 0,
	CTX_BIT_KERNEL	= 1 << 1,
	CTX_BIT_HV	= 1 << 2,
	CTX_BIT_HOST	= 1 << 3,
	CTX_BIT_IDLE	= 1 << 4,
	CTX_BIT_MAX	= 1 << 5,
};

#define NUM_CTX CTX_BIT_MAX

enum stat_type {
	STAT_NONE = 0,
	STAT_NSECS,
	STAT_CYCLES,
	STAT_STALLED_CYCLES_FRONT,
	STAT_STALLED_CYCLES_BACK,
	STAT_BRANCHES,
	STAT_CACHEREFS,
	STAT_L1_DCACHE,
	STAT_L1_ICACHE,
	STAT_LL_CACHE,
	STAT_ITLB_CACHE,
	STAT_DTLB_CACHE,
	STAT_CYCLES_IN_TX,
	STAT_TRANSACTION,
	STAT_ELISION,
	STAT_TOPDOWN_TOTAL_SLOTS,
	STAT_TOPDOWN_SLOTS_ISSUED,
	STAT_TOPDOWN_SLOTS_RETIRED,
	STAT_TOPDOWN_FETCH_BUBBLES,
	STAT_TOPDOWN_RECOVERY_BUBBLES,
	STAT_SMI_NUM,
	STAT_APERF,
	STAT_MAX
};

struct runtime_stat {
	struct rblist value_list;
};

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struct perf_stat_config {
	enum aggr_mode	aggr_mode;
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	bool		scale;
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	FILE		*output;
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	unsigned int	interval;
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	struct runtime_stat *stats;
	int		stats_num;
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};

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void update_stats(struct stats *stats, u64 val);
double avg_stats(struct stats *stats);
double stddev_stats(struct stats *stats);
double rel_stddev_stats(double stddev, double avg);

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static inline void init_stats(struct stats *stats)
{
	stats->n    = 0.0;
	stats->mean = 0.0;
	stats->M2   = 0.0;
	stats->min  = (u64) -1;
	stats->max  = 0;
}
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struct perf_evsel;
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struct perf_evlist;

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bool __perf_evsel_stat__is(struct perf_evsel *evsel,
			   enum perf_stat_evsel_id id);

#define perf_stat_evsel__is(evsel, id) \
	__perf_evsel_stat__is(evsel, PERF_STAT_EVSEL_ID__ ## id)

void perf_stat_evsel_id_init(struct perf_evsel *evsel);

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extern struct runtime_stat rt_stat;
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extern struct stats walltime_nsecs_stats;

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typedef void (*print_metric_t)(void *ctx, const char *color, const char *unit,
			       const char *fmt, double val);
typedef void (*new_line_t )(void *ctx);

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void runtime_stat__init(struct runtime_stat *st);
void runtime_stat__exit(struct runtime_stat *st);
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void perf_stat__init_shadow_stats(void);
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void perf_stat__reset_shadow_stats(void);
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void perf_stat__reset_shadow_per_stat(struct runtime_stat *st);
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void perf_stat__update_shadow_stats(struct perf_evsel *counter, u64 count,
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				    int cpu, struct runtime_stat *st);
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struct perf_stat_output_ctx {
	void *ctx;
	print_metric_t print_metric;
	new_line_t new_line;
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	bool force_header;
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};

void perf_stat__print_shadow_stats(struct perf_evsel *evsel,
				   double avg, int cpu,
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				   struct perf_stat_output_ctx *out,
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				   struct rblist *metric_events,
				   struct runtime_stat *st);
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void perf_stat__collect_metric_expr(struct perf_evlist *);
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int perf_evlist__alloc_stats(struct perf_evlist *evlist, bool alloc_raw);
void perf_evlist__free_stats(struct perf_evlist *evlist);
void perf_evlist__reset_stats(struct perf_evlist *evlist);
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int perf_stat_process_counter(struct perf_stat_config *config,
			      struct perf_evsel *counter);
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struct perf_tool;
union perf_event;
struct perf_session;
int perf_event__process_stat_event(struct perf_tool *tool,
				   union perf_event *event,
				   struct perf_session *session);
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size_t perf_event__fprintf_stat(union perf_event *event, FILE *fp);
size_t perf_event__fprintf_stat_round(union perf_event *event, FILE *fp);
size_t perf_event__fprintf_stat_config(union perf_event *event, FILE *fp);
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#endif