diff options
| author | Adrian Hunter <adrian.hunter@intel.com> | 2022-09-12 11:34:11 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-10-04 14:55:23 +0300 |
| commit | da4062021e0e6da52d4919b6d77dbd77fa847f97 (patch) | |
| tree | 9269e7def2fa36b1785bbede8897a199c963525e /tools/lib | |
| parent | 2c1c9e351a43878043684be92615d7002c8ea0c6 (diff) | |
| download | linux-da4062021e0e6da52d4919b6d77dbd77fa847f97.tar.xz | |
perf tools: Add debug messages and comments for testing
Add debug messages to enable scripts to track aspects of 'perf record'
behaviour. The messages will be consumed after 'perf record' has run,
with the exception of "perf record has started" which is consequently
flushed.
Put comments so developers know which messages are also being used by test
scripts.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20220912083412.7058-11-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/lib')
| -rw-r--r-- | tools/lib/perf/evlist.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/lib/perf/evlist.c b/tools/lib/perf/evlist.c index 8ec5b9f344e0..0e7347d1583d 100644 --- a/tools/lib/perf/evlist.c +++ b/tools/lib/perf/evlist.c @@ -487,6 +487,7 @@ mmap_per_evsel(struct perf_evlist *evlist, struct perf_evlist_mmap_ops *ops, if (ops->idx) ops->idx(evlist, evsel, mp, idx); + /* Debug message used by test scripts */ pr_debug("idx %d: mmapping fd %d\n", idx, *output); if (ops->mmap(map, mp, *output, evlist_cpu) < 0) return -1; @@ -496,6 +497,7 @@ mmap_per_evsel(struct perf_evlist *evlist, struct perf_evlist_mmap_ops *ops, if (!idx) perf_evlist__set_mmap_first(evlist, map, overwrite); } else { + /* Debug message used by test scripts */ pr_debug("idx %d: set output fd %d -> %d\n", idx, fd, *output); if (ioctl(fd, PERF_EVENT_IOC_SET_OUTPUT, *output) != 0) return -1; |