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authorAdrian Hunter <adrian.hunter@intel.com>2022-09-12 11:34:11 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2022-10-04 14:55:23 +0300
commitda4062021e0e6da52d4919b6d77dbd77fa847f97 (patch)
tree9269e7def2fa36b1785bbede8897a199c963525e /tools/lib
parent2c1c9e351a43878043684be92615d7002c8ea0c6 (diff)
downloadlinux-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.c2
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;