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95 lines
2.5 KiB
95 lines
2.5 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* Builtin evlist command: Show the list of event selectors present |
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* in a perf.data file. |
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*/ |
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#include "builtin.h" |
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#include <linux/list.h> |
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#include "perf.h" |
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#include "util/evlist.h" |
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#include "util/evsel.h" |
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#include "util/evsel_fprintf.h" |
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#include "util/parse-events.h" |
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#include <subcmd/parse-options.h> |
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#include "util/session.h" |
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#include "util/data.h" |
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#include "util/debug.h" |
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#include <linux/err.h> |
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#include "util/tool.h" |
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static int process_header_feature(struct perf_session *session __maybe_unused, |
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union perf_event *event __maybe_unused) |
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{ |
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session_done = 1; |
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return 0; |
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} |
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static int __cmd_evlist(const char *file_name, struct perf_attr_details *details) |
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{ |
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struct perf_session *session; |
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struct evsel *pos; |
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struct perf_data data = { |
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.path = file_name, |
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.mode = PERF_DATA_MODE_READ, |
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.force = details->force, |
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}; |
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struct perf_tool tool = { |
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/* only needed for pipe mode */ |
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.attr = perf_event__process_attr, |
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.feature = process_header_feature, |
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}; |
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bool has_tracepoint = false; |
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session = perf_session__new(&data, &tool); |
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if (IS_ERR(session)) |
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return PTR_ERR(session); |
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if (data.is_pipe) |
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perf_session__process_events(session); |
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evlist__for_each_entry(session->evlist, pos) { |
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evsel__fprintf(pos, details, stdout); |
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if (pos->core.attr.type == PERF_TYPE_TRACEPOINT) |
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has_tracepoint = true; |
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} |
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if (has_tracepoint && !details->trace_fields) |
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printf("# Tip: use 'perf evlist --trace-fields' to show fields for tracepoint events\n"); |
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perf_session__delete(session); |
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return 0; |
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} |
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int cmd_evlist(int argc, const char **argv) |
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{ |
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struct perf_attr_details details = { .verbose = false, }; |
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const struct option options[] = { |
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OPT_STRING('i', "input", &input_name, "file", "Input file name"), |
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OPT_BOOLEAN('F', "freq", &details.freq, "Show the sample frequency"), |
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OPT_BOOLEAN('v', "verbose", &details.verbose, |
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"Show all event attr details"), |
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OPT_BOOLEAN('g', "group", &details.event_group, |
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"Show event group information"), |
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OPT_BOOLEAN('f', "force", &details.force, "don't complain, do it"), |
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OPT_BOOLEAN(0, "trace-fields", &details.trace_fields, "Show tracepoint fields"), |
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OPT_END() |
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}; |
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const char * const evlist_usage[] = { |
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"perf evlist [<options>]", |
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NULL |
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}; |
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argc = parse_options(argc, argv, options, evlist_usage, 0); |
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if (argc) |
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usage_with_options(evlist_usage, options); |
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if (details.event_group && (details.verbose || details.freq)) { |
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usage_with_options_msg(evlist_usage, options, |
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"--group option is not compatible with other options\n"); |
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} |
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return __cmd_evlist(input_name, &details); |
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}
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