diff options
| author | Arnaldo Carvalho de Melo <[email protected]> | 2022-01-17 16:09:29 +0000 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <[email protected]> | 2022-01-18 12:24:58 +0000 |
| commit | 49de179577e7b05b57f625bf05cdc60a72de38d0 (patch) | |
| tree | 21404b5c8dc4ba66b120a50c0121b9477f45907f /tools/perf/util/scripting-engines/trace-event-python.c | |
| parent | perf affinity: Allow passing a NULL arg to affinity__cleanup() (diff) | |
| download | kernel-49de179577e7b05b57f625bf05cdc60a72de38d0.tar.gz kernel-49de179577e7b05b57f625bf05cdc60a72de38d0.zip | |
perf stat: No need to setup affinities when starting a workload
I.e. the simple:
$ perf stat sleep 1
Uses a dummy CPU map and thus there is no need to setup/cleanup
affinities to avoid IPIs, etc.
With this we're down to a sched_getaffinity() call, in the libnuma
initialization, that probably can be removed in a followup patch.
Acked-by: Ian Rogers <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: Ian Rogers <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-python.c')
0 files changed, 0 insertions, 0 deletions