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f07952b179
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>
47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* perf iostat
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*
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* Copyright (C) 2020, Intel Corporation
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*
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* Authors: Alexander Antonov <alexander.antonov@linux.intel.com>
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*/
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#ifndef _IOSTAT_H
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#define _IOSTAT_H
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#include <subcmd/parse-options.h>
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#include "util/stat.h"
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#include "util/parse-events.h"
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#include "util/evlist.h"
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struct option;
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struct perf_stat_config;
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struct evlist;
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struct timespec;
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enum iostat_mode_t {
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IOSTAT_NONE = -1,
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IOSTAT_RUN = 0,
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IOSTAT_LIST = 1
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};
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extern enum iostat_mode_t iostat_mode;
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typedef void (*iostat_print_counter_t)(struct perf_stat_config *, struct evsel *, char *);
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int iostat_prepare(struct evlist *evlist, struct perf_stat_config *config);
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int iostat_parse(const struct option *opt, const char *str,
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int unset __maybe_unused);
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void iostat_list(struct evlist *evlist, struct perf_stat_config *config);
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void iostat_release(struct evlist *evlist);
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void iostat_prefix(struct evlist *evlist, struct perf_stat_config *config,
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char *prefix, struct timespec *ts);
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void iostat_print_header_prefix(struct perf_stat_config *config);
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void iostat_print_metric(struct perf_stat_config *config, struct evsel *evsel,
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struct perf_stat_output_ctx *out);
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void iostat_print_counters(struct evlist *evlist,
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struct perf_stat_config *config, struct timespec *ts,
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char *prefix, iostat_print_counter_t print_cnt_cb);
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#endif /* _IOSTAT_H */
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