diff options
| author | Adrian Hunter <adrian.hunter@intel.com> | 2013-11-15 15:52:29 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2013-11-27 14:58:36 -0300 |
| commit | 3aa5939d71fa22a947808ba9c798b8537c35097a (patch) | |
| tree | b127f8c885ade7568c24230d0c9e68a693877eae /tools/perf/util/evlist.c | |
| parent | e944d3d7d151eea149c62310eaff7b92c7732f58 (diff) | |
perf record: Make per-cpu mmaps the default.
This affects the -p, -t and -u options that previously defaulted to
per-thread mmaps.
Consequently add an option to select per-thread mmaps to support the old
behaviour.
Note that per-thread can be used with a workload-only (i.e. none of -p,
-t, -u, -a or -C is selected) to get a per-thread mmap with no
inheritance.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/5286271D.3020808@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/evlist.c')
| -rw-r--r-- | tools/perf/util/evlist.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index bbc746aa5716..76fa76431329 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -819,8 +819,10 @@ int perf_evlist__create_maps(struct perf_evlist *evlist, struct target *target) if (evlist->threads == NULL) return -1; - if (target->force_per_cpu) - evlist->cpus = cpu_map__new(target->cpu_list); + if (target->default_per_cpu) + evlist->cpus = target->per_thread ? + cpu_map__dummy_new() : + cpu_map__new(target->cpu_list); else if (target__has_task(target)) evlist->cpus = cpu_map__dummy_new(); else if (!target__has_cpu(target) && !target->uses_mmap) |