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| author | Alexey Budankov <alexey.budankov@linux.intel.com> | 2020-07-17 09:07:03 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2020-08-04 13:50:04 +0200 |
| commit | 68cd3b45b93d07f7e7d853f330d3a37b560b04f2 (patch) | |
| tree | 130b4edc711d7cae5a83002a3d6126d37310656a /tools/perf/builtin-record.c | |
| parent | perf stat: Introduce --control fd:ctl-fd[,ack-fd] options (diff) | |
| download | linux-68cd3b45b93d07f7e7d853f330d3a37b560b04f2.tar.xz linux-68cd3b45b93d07f7e7d853f330d3a37b560b04f2.zip | |
perf record: Extend -D,--delay option with -1 value
Extend -D,--delay option with -1 to start collection with events
disabled to be enabled later by 'enable' command provided via control
file descriptor.
Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/3e7d362c-7973-ee5d-e81e-c60ea22432c3@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-record.c')
| -rw-r--r-- | tools/perf/builtin-record.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index b6bdccd875bc..1dc8166a7a39 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -1786,8 +1786,12 @@ static int __cmd_record(struct record *rec, int argc, const char **argv) } if (opts->initial_delay) { - usleep(opts->initial_delay * USEC_PER_MSEC); - evlist__enable(rec->evlist); + pr_info(EVLIST_DISABLED_MSG); + if (opts->initial_delay > 0) { + usleep(opts->initial_delay * USEC_PER_MSEC); + evlist__enable(rec->evlist); + pr_info(EVLIST_ENABLED_MSG); + } } trigger_ready(&auxtrace_snapshot_trigger); @@ -2499,8 +2503,8 @@ static struct option __record_options[] = { OPT_CALLBACK('G', "cgroup", &record.evlist, "name", "monitor event in cgroup name only", parse_cgroups), - OPT_UINTEGER('D', "delay", &record.opts.initial_delay, - "ms to wait before starting measurement after program start"), + OPT_INTEGER('D', "delay", &record.opts.initial_delay, + "ms to wait before starting measurement after program start (-1: start with events disabled)"), OPT_BOOLEAN(0, "kcore", &record.opts.kcore, "copy /proc/kcore"), OPT_STRING('u', "uid", &record.opts.target.uid_str, "user", "user to profile"), |