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| author | Namhyung Kim <namhyung.kim@lge.com> | 2012-05-16 18:45:49 +0900 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-05-17 12:32:54 -0300 |
| commit | d1cb9fce92c41454bd594fb0920575fc63301878 (patch) | |
| tree | 02b1c6b97504b2ba3a2a8f3e33bbb651bb6e98e2 | |
| parent | 879d77d0cbe20ad1d6099a1e16f03b72c0649828 (diff) | |
| download | talos-op-linux-d1cb9fce92c41454bd594fb0920575fc63301878.tar.gz talos-op-linux-d1cb9fce92c41454bd594fb0920575fc63301878.zip | |
perf target: Add uses_mmap field
If perf doesn't mmap on event (like perf stat), it should not create
per-task-per-cpu events. So just use a dummy cpu map to create a
per-task event for this case.
Signed-off-by: Namhyung Kim <namhyung.kim@lge.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1337161549-9870-3-git-send-email-namhyung.kim@lge.com
[ committer note: renamed .need_mmap to .uses_mmap ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/builtin-record.c | 3 | ||||
| -rw-r--r-- | tools/perf/builtin-test.c | 1 | ||||
| -rw-r--r-- | tools/perf/builtin-top.c | 3 | ||||
| -rw-r--r-- | tools/perf/util/evlist.c | 2 | ||||
| -rw-r--r-- | tools/perf/util/target.h | 1 |
5 files changed, 10 insertions, 0 deletions
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index d19058a7b84c..8a3dfac161e2 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -754,6 +754,9 @@ static struct perf_record record = { .user_freq = UINT_MAX, .user_interval = ULLONG_MAX, .freq = 1000, + .target = { + .uses_mmap = true, + }, }, .write_mode = WRITE_FORCE, .file_new = true, diff --git a/tools/perf/builtin-test.c b/tools/perf/builtin-test.c index 9d9abbbe23be..4eaa665fd32b 100644 --- a/tools/perf/builtin-test.c +++ b/tools/perf/builtin-test.c @@ -1167,6 +1167,7 @@ static int test__PERF_RECORD(void) struct perf_record_opts opts = { .target = { .uid = UINT_MAX, + .uses_mmap = true, }, .no_delay = true, .freq = 10, diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 553560a8b1be..3e981a710c4d 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -1162,6 +1162,9 @@ int cmd_top(int argc, const char **argv, const char *prefix __used) .freq = 1000, /* 1 KHz */ .mmap_pages = 128, .sym_pcnt_filter = 5, + .target = { + .uses_mmap = true, + }, }; char callchain_default_opt[] = "fractal,0.5,callee"; const struct option options[] = { diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 87889f325678..4ac5f5ae4ce9 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -611,6 +611,8 @@ int perf_evlist__create_maps(struct perf_evlist *evlist, if (perf_target__has_task(target)) evlist->cpus = cpu_map__dummy_new(); + else if (!perf_target__has_cpu(target) && !target->uses_mmap) + evlist->cpus = cpu_map__dummy_new(); else evlist->cpus = cpu_map__new(target->cpu_list); diff --git a/tools/perf/util/target.h b/tools/perf/util/target.h index c43f632955fa..a4be8575fda5 100644 --- a/tools/perf/util/target.h +++ b/tools/perf/util/target.h @@ -11,6 +11,7 @@ struct perf_target { const char *uid_str; uid_t uid; bool system_wide; + bool uses_mmap; }; enum perf_target_errno { |
