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perf evlist: Add want_signal parameter to perf_evlist__prepare_workload() 

In case a caller doesn't want to receive SIGUSR1 when the child failed
to exec().

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1362987798-24969-6-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim 2013-03-11 16:43:17 +09:00 committed by Arnaldo Carvalho de Melo
parent 119fa3c922
commit 55e162ea76
5 changed files with 11 additions and 6 deletions
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3
tools/perf/builtin-record.c
View File

@ -475,7 +475,8 @@ static int __cmd_record(struct perf_record *rec, int argc, const char **argv)
if (forks) {
err = perf_evlist__prepare_workload(evsel_list, &opts->target,
argv, opts->pipe_output);
argv, opts->pipe_output,
true);
if (err < 0) {
pr_err("Couldn't run the workload!\n");
goto out_delete_session;

2
tools/perf/builtin-trace.c
View File

@ -462,7 +462,7 @@ static int trace__run(struct trace *trace, int argc, const char **argv)
if (forks) {
err = perf_evlist__prepare_workload(evlist, &trace->opts.target,
argv, false);
argv, false, false);
if (err < 0) {
printf("Couldn't run the workload!\n");
goto out_delete_evlist;

3
tools/perf/tests/perf-record.c
View File

@ -93,7 +93,8 @@ int test__PERF_RECORD(void)
* so that we have time to open the evlist (calling sys_perf_event_open
* on all the fds) and then mmap them.
*/
err = perf_evlist__prepare_workload(evlist, &opts.target, argv, false);
err = perf_evlist__prepare_workload(evlist, &opts.target, argv,
false, false);
if (err < 0) {
pr_debug("Couldn't run the workload!\n");
goto out_delete_maps;

6
tools/perf/util/evlist.c
View File

@ -746,7 +746,8 @@ int perf_evlist__open(struct perf_evlist *evlist)
int perf_evlist__prepare_workload(struct perf_evlist *evlist,
struct perf_target *target,
const char *argv[], bool pipe_output)
const char *argv[], bool pipe_output,
bool want_signal)
{
int child_ready_pipe[2], go_pipe[2];
char bf;
@ -796,7 +797,8 @@ int perf_evlist__prepare_workload(struct perf_evlist *evlist,
execvp(argv[0], (char **)argv);
perror(argv[0]);
kill(getppid(), SIGUSR1);
if (want_signal)
kill(getppid(), SIGUSR1);
exit(-1);
}

3
tools/perf/util/evlist.h
View File

@ -87,7 +87,8 @@ void perf_evlist__config(struct perf_evlist *evlist,
int perf_evlist__prepare_workload(struct perf_evlist *evlist,
struct perf_target *target,
const char *argv[], bool pipe_output);
const char *argv[], bool pipe_output,
bool want_signal);
int perf_evlist__start_workload(struct perf_evlist *evlist);
int perf_evlist__mmap(struct perf_evlist *evlist, unsigned int pages,