Commit e90debdd authored by Jiri Olsa's avatar Jiri Olsa Committed by Arnaldo Carvalho de Melo
Browse files

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: default avatarJiri 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: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 5cfe2c82

tools/perf/Documentation/perf-script.txt

+6 −0
Original line number Diff line number Diff line
@@ -209,6 +209,12 @@ OPTIONS 
--show-mmap-events

	Display mmap related events (e.g. MMAP, MMAP2).



--header

	Show perf.data header.



--header-only

	Show only perf.data header.



SEE ALSO

--------

linkperf:perf-record[1], linkperf:perf-script-perl[1],

tools/perf/builtin-script.c

+10 −3
Original line number Diff line number Diff line
@@ -1494,6 +1494,8 @@ static int have_cmd(int argc, const char **argv) 
int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused)

{

	bool show_full_info = false;

	bool header = false;

	bool header_only = false;

	char *rec_script_path = NULL;

	char *rep_script_path = NULL;

	struct perf_session *session;
@@ -1532,6 +1534,8 @@ int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused) 
	OPT_STRING('i', "input", &input_name, "file", "input file name"),

	OPT_BOOLEAN('d', "debug-mode", &debug_mode,

		   "do various checks like samples ordering and lost events"),

	OPT_BOOLEAN(0, "header", &header, "Show data header."),

	OPT_BOOLEAN(0, "header-only", &header_only, "Show only data header."),

	OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,

		   "file", "vmlinux pathname"),

	OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
@@ -1748,6 +1752,12 @@ int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused) 
	if (session == NULL)

		return -ENOMEM;



	if (header || header_only) {

		perf_session__fprintf_info(session, stdout, show_full_info);

		if (header_only)

			return 0;

	}



	script.session = session;



	if (cpu_list) {
@@ -1755,9 +1765,6 @@ int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused) 
			return -1;

	}



	if (!script_name && !generate_script_lang)

		perf_session__fprintf_info(session, stdout, show_full_info);



	if (!no_callchain)

		symbol_conf.use_callchain = true;

	else

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