diff options
| author | Alexey Budankov | 2020-07-17 10:07:50 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo | 2020-08-04 08:50:28 -0300 |
| commit | acce02239420e38369df7a69687f000c6822460b (patch) | |
| tree | bbdcec78bf7183410c6f10ea3f2f0993c3a33342 | |
| parent | 68cd3b45b93d07f7e7d853f330d3a37b560b04f2 (diff) | |
perf record: Implement control commands handling
Implement handling of 'enable' and 'disable' control commands coming
from 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/f0fde590-1320-dca1-39ff-da3322704d3b@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/builtin-record.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 1dc8166a7a39..739601ecdaff 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -1564,6 +1564,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv) bool disabled = false, draining = false; int fd; float ratio = 0; + enum evlist_ctl_cmd cmd = EVLIST_CTL_CMD_UNSUPPORTED; atexit(record__sig_exit); signal(SIGCHLD, sig_handler); @@ -1883,6 +1884,21 @@ static int __cmd_record(struct record *rec, int argc, const char **argv) draining = true; } + if (evlist__ctlfd_process(rec->evlist, &cmd) > 0) { + switch (cmd) { + case EVLIST_CTL_CMD_ENABLE: + pr_info(EVLIST_ENABLED_MSG); + break; + case EVLIST_CTL_CMD_DISABLE: + pr_info(EVLIST_DISABLED_MSG); + break; + case EVLIST_CTL_CMD_ACK: + case EVLIST_CTL_CMD_UNSUPPORTED: + default: + break; + } + } + /* * When perf is starting the traced process, at the end events * die with the process and we wait for that. Thus no need to |