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kernel/linux-rt-4.4.41/tools/perf/builtin-evlist.c 1.79 KB
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  /*
   * 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 "util/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_file file = {
  		.path = file_name,
  		.mode = PERF_DATA_MODE_READ,
  		.force = details->force,
  	};
  
  	session = perf_session__new(&file, 0, NULL);
  	if (session == NULL)
  		return -1;
  
  	evlist__for_each(session->evlist, pos)
  		perf_evsel__fprintf(pos, details, stdout);
  
  	perf_session__delete(session);
  	return 0;
  }
  
  int cmd_evlist(int argc, const char **argv, const char *prefix __maybe_unused)
  {
  	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_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
  ");
  	}
  
  	return __cmd_evlist(input_name, &details);
  }