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authorAdrian Hunter <adrian.hunter@intel.com>2022-09-15 15:26:11 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2022-09-21 22:08:00 +0300
commitca76d7d2812b46124291f99c9b50aaf63a936f23 (patch)
tree74ae499d28c38d0d65d08b3e33b838bed7c39c31 /tools/lib/perf
parente1dda48e4370043443e7d121d4b67a96fb70c75b (diff)
downloadlinux-ca76d7d2812b46124291f99c9b50aaf63a936f23.tar.xz
perf record: Fix cpu mask bit setting for mixed mmaps
With mixed per-thread and (system-wide) per-cpu maps, the "any cpu" value -1 must be skipped when setting CPU mask bits. Prior to commit cbd7bfc7fd99acdd ("tools/perf: Fix out of bound access to cpu mask array") the invalid setting went unnoticed, but since then it causes perf record to fail with an error. Example: Before: $ perf record -e intel_pt// --per-thread uname Failed to initialize parallel data streaming masks After: $ perf record -e intel_pt// --per-thread uname Linux [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.068 MB perf.data ] Fixes: ae4f8ae16a078964 ("libperf evlist: Allow mixing per-thread and per-cpu mmaps") Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20220915122612.81738-2-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/lib/perf')
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