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c711836972
Now usage_with_options() setup a pager before printing message so normal printf() or pr_err() will not be shown. The usage_with_options_msg() can be used to print some help message before usage strings. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1445701767-12731-4-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
70 lines
1.8 KiB
C
70 lines
1.8 KiB
C
/*
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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 "util/util.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/parse-events.h"
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#include "util/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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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 perf_evsel *pos;
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struct perf_data_file file = {
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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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session = perf_session__new(&file, 0, NULL);
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if (session == NULL)
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return -1;
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evlist__for_each(session->evlist, pos)
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perf_evsel__fprintf(pos, details, stdout);
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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, const char *prefix __maybe_unused)
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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_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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