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perf thread_map: Create dummy constructor out of open coded equivalent 

Create a dummy thread_map, one that has just one entry and it is -1,
meaning 'all threads', as this ends up going down to perf_event_open().

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jean Pihet <jean.pihet@linaro.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-8av26cz8uxmbnihl5mmrygp9@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
wifi-calibration
Arnaldo Carvalho de Melo 2014-10-10 12:03:46 -03:00
parent a635fc511e
commit 641556c98c
2 changed files with 14 additions and 8 deletions
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21
tools/perf/util/thread_map.c
View File

@ -214,6 +214,17 @@ out_free_threads:
goto out;
}
struct thread_map *thread_map__new_dummy(void)
{
struct thread_map *threads = malloc(sizeof(*threads) + sizeof(pid_t));
if (threads != NULL) {
threads->map[0] = -1;
threads->nr = 1;
}
return threads;
}
static struct thread_map *thread_map__new_by_tid_str(const char *tid_str)
{
struct thread_map *threads = NULL, *nt;
@ -224,14 +235,8 @@ static struct thread_map *thread_map__new_by_tid_str(const char *tid_str)
struct strlist *slist;
/* perf-stat expects threads to be generated even if tid not given */
if (!tid_str) {
threads = malloc(sizeof(*threads) + sizeof(pid_t));
if (threads != NULL) {
threads->map[0] = -1;
threads->nr = 1;
}
return threads;
}
if (!tid_str)
return thread_map__new_dummy();
slist = strlist__new(false, tid_str);
if (!slist)

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

@ -9,6 +9,7 @@ struct thread_map {
pid_t map[];
};
struct thread_map *thread_map__new_dummy(void);
struct thread_map *thread_map__new_by_pid(pid_t pid);
struct thread_map *thread_map__new_by_tid(pid_t tid);
struct thread_map *thread_map__new_by_uid(uid_t uid);