perf script: Add --header/--header-only options
Currently the perf.data header is always displayed for stdio output, which is no always useful. Disabling header information by default and adding following options to control header output: --header - display header information --header-only - display header information only w/o further processing Signed-off-by: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/n/tip-0ehaawv5xc83w6ag03c5hi10@git.kernel.org Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1386583370-1699-3-git-send-email-jolsa@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -209,6 +209,12 @@ OPTIONS
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--show-mmap-events
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Display mmap related events (e.g. MMAP, MMAP2).
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--header
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Show perf.data header.
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--header-only
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Show only perf.data header.
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SEE ALSO
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--------
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linkperf:perf-record[1], linkperf:perf-script-perl[1],
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@ -1494,6 +1494,8 @@ static int have_cmd(int argc, const char **argv)
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int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused)
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{
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bool show_full_info = false;
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bool header = false;
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bool header_only = false;
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char *rec_script_path = NULL;
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char *rep_script_path = NULL;
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struct perf_session *session;
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@ -1532,6 +1534,8 @@ int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused)
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OPT_STRING('i', "input", &input_name, "file", "input file name"),
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OPT_BOOLEAN('d', "debug-mode", &debug_mode,
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"do various checks like samples ordering and lost events"),
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OPT_BOOLEAN(0, "header", &header, "Show data header."),
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OPT_BOOLEAN(0, "header-only", &header_only, "Show only data header."),
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OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
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"file", "vmlinux pathname"),
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OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
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@ -1748,6 +1752,12 @@ int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused)
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if (session == NULL)
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return -ENOMEM;
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if (header || header_only) {
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perf_session__fprintf_info(session, stdout, show_full_info);
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if (header_only)
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return 0;
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}
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script.session = session;
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if (cpu_list) {
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@ -1755,9 +1765,6 @@ int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused)
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return -1;
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}
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if (!script_name && !generate_script_lang)
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perf_session__fprintf_info(session, stdout, show_full_info);
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if (!no_callchain)
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symbol_conf.use_callchain = true;
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else
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