diff options
Diffstat (limited to 'tools/perf/builtin-evlist.c')
-rw-r--r-- | tools/perf/builtin-evlist.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/tools/perf/builtin-evlist.c b/tools/perf/builtin-evlist.c new file mode 100644 index 000000000..e06e822ce --- /dev/null +++ b/tools/perf/builtin-evlist.c @@ -0,0 +1,81 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Builtin evlist command: Show the list of event selectors present + * in a perf.data file. + */ +#include "builtin.h" + +#include "util/util.h" + +#include <linux/list.h> + +#include "perf.h" +#include "util/evlist.h" +#include "util/evsel.h" +#include "util/parse-events.h" +#include <subcmd/parse-options.h> +#include "util/session.h" +#include "util/data.h" +#include "util/debug.h" + +static int __cmd_evlist(const char *file_name, struct perf_attr_details *details) +{ + struct perf_session *session; + struct perf_evsel *pos; + struct perf_data data = { + .file = { + .path = file_name, + }, + .mode = PERF_DATA_MODE_READ, + .force = details->force, + }; + bool has_tracepoint = false; + + session = perf_session__new(&data, 0, NULL); + if (session == NULL) + return -1; + + evlist__for_each_entry(session->evlist, pos) { + perf_evsel__fprintf(pos, details, stdout); + + if (pos->attr.type == PERF_TYPE_TRACEPOINT) + has_tracepoint = true; + } + + if (has_tracepoint && !details->trace_fields) + printf("# Tip: use 'perf evlist --trace-fields' to show fields for tracepoint events\n"); + + perf_session__delete(session); + return 0; +} + +int cmd_evlist(int argc, const char **argv) +{ + struct perf_attr_details details = { .verbose = false, }; + const struct option options[] = { + OPT_STRING('i', "input", &input_name, "file", "Input file name"), + OPT_BOOLEAN('F', "freq", &details.freq, "Show the sample frequency"), + OPT_BOOLEAN('v', "verbose", &details.verbose, + "Show all event attr details"), + OPT_BOOLEAN('g', "group", &details.event_group, + "Show event group information"), + OPT_BOOLEAN('f', "force", &details.force, "don't complain, do it"), + OPT_BOOLEAN(0, "trace-fields", &details.trace_fields, "Show tracepoint fields"), + OPT_END() + }; + const char * const evlist_usage[] = { + "perf evlist [<options>]", + NULL + }; + + argc = parse_options(argc, argv, options, evlist_usage, 0); + if (argc) + usage_with_options(evlist_usage, options); + + if (details.event_group && (details.verbose || details.freq)) { + usage_with_options_msg(evlist_usage, options, + "--group option is not compatible with other options\n"); + } + + return __cmd_evlist(input_name, &details); +} |