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perf record: Change switch-output option to take optional argument 

Next patches will add --switch-output option arguments, changing the
option to allow that and adding its default value to 'signal'.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Wang Nan <wangnan0@huawei.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1483955520-29063-4-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2017-01-09 10:51:57 +01:00 committed by Arnaldo Carvalho de Melo
parent 1b43b70484
commit cb4e1ebb6a
1 changed files with 26 additions and 2 deletions
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28
tools/perf/builtin-record.c
View File

@ -48,6 +48,8 @@
struct switch_output { struct switch_output {
bool signal; bool signal;
const char *str;
bool set;
}; };
struct record { struct record {
@ -1356,6 +1358,22 @@ out_free:
return ret; return ret;
} }
static int switch_output_setup(struct record *rec)
{
struct switch_output *s = &rec->switch_output;
if (!s->set)
return 0;
if (!strcmp(s->str, "signal")) {
s->signal = true;
pr_debug("switch-output with SIGUSR2 signal\n");
return 0;
}
return -1;
}
static const char * const __record_usage[] = { static const char * const __record_usage[] = {
"perf record [<options>] [<command>]", "perf record [<options>] [<command>]",
"perf record [<options>] -- <command> [<options>]", "perf record [<options>] -- <command> [<options>]",
@ -1523,8 +1541,9 @@ static struct option __record_options[] = {
"Record build-id of all DSOs regardless of hits"), "Record build-id of all DSOs regardless of hits"),
OPT_BOOLEAN(0, "timestamp-filename", &record.timestamp_filename, OPT_BOOLEAN(0, "timestamp-filename", &record.timestamp_filename,
"append timestamp to output filename"), "append timestamp to output filename"),
OPT_BOOLEAN(0, "switch-output", &record.switch_output.signal, OPT_STRING_OPTARG_SET(0, "switch-output", &record.switch_output.str,
"Switch output when receive SIGUSR2"), &record.switch_output.set, "signal",
"Switch output when receive SIGUSR2", "signal"),
OPT_BOOLEAN(0, "dry-run", &dry_run, OPT_BOOLEAN(0, "dry-run", &dry_run,
"Parse options then exit"), "Parse options then exit"),
OPT_END() OPT_END()
@ -1582,6 +1601,11 @@ int cmd_record(int argc, const char **argv, const char *prefix __maybe_unused)
return -EINVAL; return -EINVAL;
} }
if (switch_output_setup(rec)) {
parse_options_usage(record_usage, record_options, "switch-output", 0);
return -EINVAL;
}
if (rec->switch_output.signal) if (rec->switch_output.signal)
rec->timestamp_filename = true; rec->timestamp_filename = true;