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| author | Mike Galbraith <efault@gmx.de> | 2009-05-27 10:10:51 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-05-27 12:31:03 +0200 |
| commit | ef65b2a0b3a2f82850144df6e6a7796f6d66da6b (patch) | |
| tree | 14ad25a63330c8f43d91f9f211188b0e5baa9e72 /Documentation | |
| parent | a930d2c0d0a685ab955472b08baad041cc5edb4a (diff) | |
| download | op-kernel-dev-ef65b2a0b3a2f82850144df6e6a7796f6d66da6b.zip op-kernel-dev-ef65b2a0b3a2f82850144df6e6a7796f6d66da6b.tar.gz | |
perf record: Fix the profiling of existing pid or whole box
Perf record bails if no command argument is provided, so you can't use
naked -a or -p to profile a running task or the whole box.
Allow foreground profiling of an existing pid or the entire system.
[ Impact: fix command option handling bug ]
Signed-off-by: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: John Kacur <jkacur@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/perf_counter/builtin-record.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/Documentation/perf_counter/builtin-record.c b/Documentation/perf_counter/builtin-record.c index 431077a..4a06866 100644 --- a/Documentation/perf_counter/builtin-record.c +++ b/Documentation/perf_counter/builtin-record.c @@ -354,7 +354,7 @@ static int __cmd_record(int argc, const char **argv) signal(SIGCHLD, sig_handler); signal(SIGINT, sig_handler); - if (target_pid == -1) { + if (target_pid == -1 && argc) { pid = fork(); if (pid < 0) perror("failed to fork"); @@ -430,7 +430,7 @@ int cmd_record(int argc, const char **argv, const char *prefix) create_events_help(events_help_msg); argc = parse_options(argc, argv, options, record_usage, 0); - if (!argc) + if (!argc && target_pid == -1 && !system_wide) usage_with_options(record_usage, options); if (!nr_counters) { |
