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perf target: Add uses_mmap field

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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>
This commit is contained in:
Namhyung Kim 2012-05-16 18:45:49 +09:00 committed by Arnaldo Carvalho de Melo
parent 879d77d0cb
commit d1cb9fce92
5 changed files with 10 additions and 0 deletions
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3
tools/perf/builtin-record.c
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@ -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,

1
tools/perf/builtin-test.c
View File

@ -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,

3
tools/perf/builtin-top.c
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@ -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[] = {

2
tools/perf/util/evlist.c
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@ -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);

1
tools/perf/util/target.h
View File

@ -11,6 +11,7 @@ struct perf_target {
const char *uid_str;
uid_t uid;
bool system_wide;
bool uses_mmap;
};
enum perf_target_errno {