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perf thread_map: Create dummy constructor out of open coded equivalent

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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 <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Don Zickus <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Jean Pihet <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Mike Galbraith <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephane Eranian <[email protected]>
Link: http://lkml.kernel.org/n/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
This commit is contained in:
Arnaldo Carvalho de Melo 2014-10-10 12:03:46 -03:00
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);