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perf sched: Factor out destroy_tasks()

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Add destroy_tasks() as a counterpart of create_tasks() and put the
thread safety notations there.  After join, it destroys semaphores too.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220908225448.4105056-1-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim 2022-09-08 15:54:48 -07:00 committed by Arnaldo Carvalho de Melo
parent c7202d20fb
commit 165da80296
1 changed files with 22 additions and 2 deletions
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24
tools/perf/builtin-sched.c
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@ -690,6 +690,27 @@ static void create_tasks(struct perf_sched *sched)
}
}
static void destroy_tasks(struct perf_sched *sched)
UNLOCK_FUNCTION(sched->start_work_mutex)
UNLOCK_FUNCTION(sched->work_done_wait_mutex)
{
struct task_desc *task;
unsigned long i;
int err;
mutex_unlock(&sched->start_work_mutex);
mutex_unlock(&sched->work_done_wait_mutex);
/* Get rid of threads so they won't be upset by mutex destrunction */
for (i = 0; i < sched->nr_tasks; i++) {
task = sched->tasks[i];
err = pthread_join(task->thread, NULL);
BUG_ON(err);
sem_destroy(&task->sleep_sem);
sem_destroy(&task->ready_for_work);
sem_destroy(&task->work_done_sem);
}
}
static void wait_for_tasks(struct perf_sched *sched)
EXCLUSIVE_LOCKS_REQUIRED(sched->work_done_wait_mutex)
EXCLUSIVE_LOCKS_REQUIRED(sched->start_work_mutex)
@ -3324,8 +3345,7 @@ static int perf_sched__replay(struct perf_sched *sched)
run_one_test(sched);
sched->thread_funcs_exit = true;
mutex_unlock(&sched->start_work_mutex);
mutex_unlock(&sched->work_done_wait_mutex);
destroy_tasks(sched);
return 0;
}