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perf evlist: Allow multiple read formats

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Tools find the correct evsel, and therefore read format, using the event
ID, so it isn't necessary for all read formats to be the same. In the
case of leader-sampling of AUX area events, dummy tracking events will
have a different read format, so relax the validation to become a debug
message only.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lore.kernel.org/lkml/20200401101613.6201-16-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter 2020-04-01 13:16:12 +03:00 committed by Arnaldo Carvalho de Melo
parent 3713eb371c
commit 94d3820f2e
1 changed files with 4 additions and 2 deletions
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6
tools/perf/util/evlist.c
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@ -1131,8 +1131,10 @@ bool perf_evlist__valid_read_format(struct evlist *evlist)
u64 sample_type = first->core.attr.sample_type; u64 sample_type = first->core.attr.sample_type;
evlist__for_each_entry(evlist, pos) { evlist__for_each_entry(evlist, pos) {
if (read_format != pos->core.attr.read_format) if (read_format != pos->core.attr.read_format) {
return false; pr_debug("Read format differs %#" PRIx64 " vs %#" PRIx64 "\n",
read_format, (u64)pos->core.attr.read_format);
}
} }
/* PERF_SAMPLE_READ imples PERF_FORMAT_ID. */ /* PERF_SAMPLE_READ imples PERF_FORMAT_ID. */