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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>
This commit is contained in:
Jiri Olsa 2013-12-09 11:02:50 +01:00 committed by Arnaldo Carvalho de Melo
parent 5cfe2c82f3
commit e90debddf8
2 changed files with 16 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
tools/perf/Documentation/perf-script.txt
View File

@ -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],

13
tools/perf/builtin-script.c
View File

@ -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