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| author | Ian Rogers <irogers@google.com> | 2025-04-12 03:47:03 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2025-05-12 20:18:16 +0300 |
| commit | f0869f31562bde2ed9131665f8f76ef7a3983383 (patch) | |
| tree | 25fab327a7e32375397970c638949da34a213abb /tools/perf/util | |
| parent | 17e548405a81665fd14cee960db7d093d1396400 (diff) | |
| download | linux-f0869f31562bde2ed9131665f8f76ef7a3983383.tar.xz | |
perf evsel: Add per-thread warning for EOPNOTSUPP open failues
The mrvl_ddr_pmu will return EOPNOTSUPP if opened in per-thread
mode. Give a warning for this similar to EINVAL.
Doing this better supports metric testing with limited permissions when
the mrvl_ddr_pmu is present, as the failure to open causes the test to
skip and not fail.
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Weilin Wang <weilin.wang@intel.com>
Link: https://lore.kernel.org/r/20250412004704.2297939-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util')
| -rw-r--r-- | tools/perf/util/evsel.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index b60461e16804..c06b191e7398 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -3785,6 +3785,10 @@ int evsel__open_strerror(struct evsel *evsel, struct target *target, return scnprintf(msg, size, "%s", "No hardware sampling interrupt available.\n"); #endif + if (!target__has_cpu(target)) + return scnprintf(msg, size, + "Unsupported event (%s) in per-thread mode, enable system wide with '-a'.", + evsel__name(evsel)); break; case EBUSY: if (find_process("oprofiled")) |