linux/tools/perf/util/iostat.h
Alexander Antonov f07952b179 perf stat: Basic support for iostat in perf
Add basic flow for a new iostat mode in perf. Mode is intended to
provide four I/O performance metrics per each PCIe root port: Inbound Read,
Inbound Write, Outbound Read, Outbound Write.

The actual code to compute the metrics and attribute it to
root port is in follow-on patches.

Signed-off-by: Alexander Antonov <alexander.antonov@linux.intel.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey V Bayduraev <alexey.v.bayduraev@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210419094147.15909-2-alexander.antonov@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-04-20 08:40:20 -03:00

48 lines
1.4 KiB
C

/* SPDX-License-Identifier: GPL-2.0 */
/*
* perf iostat
*
* Copyright (C) 2020, Intel Corporation
*
* Authors: Alexander Antonov <alexander.antonov@linux.intel.com>
*/
#ifndef _IOSTAT_H
#define _IOSTAT_H
#include <subcmd/parse-options.h>
#include "util/stat.h"
#include "util/parse-events.h"
#include "util/evlist.h"
struct option;
struct perf_stat_config;
struct evlist;
struct timespec;
enum iostat_mode_t {
IOSTAT_NONE = -1,
IOSTAT_RUN = 0,
IOSTAT_LIST = 1
};
extern enum iostat_mode_t iostat_mode;
typedef void (*iostat_print_counter_t)(struct perf_stat_config *, struct evsel *, char *);
int iostat_prepare(struct evlist *evlist, struct perf_stat_config *config);
int iostat_parse(const struct option *opt, const char *str,
int unset __maybe_unused);
void iostat_list(struct evlist *evlist, struct perf_stat_config *config);
void iostat_release(struct evlist *evlist);
void iostat_prefix(struct evlist *evlist, struct perf_stat_config *config,
char *prefix, struct timespec *ts);
void iostat_print_header_prefix(struct perf_stat_config *config);
void iostat_print_metric(struct perf_stat_config *config, struct evsel *evsel,
struct perf_stat_output_ctx *out);
void iostat_print_counters(struct evlist *evlist,
struct perf_stat_config *config, struct timespec *ts,
char *prefix, iostat_print_counter_t print_cnt_cb);
#endif /* _IOSTAT_H */