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-rw-r--r--tools/perf/builtin-sched.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index dd71481..7fe3b3c 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -472,6 +472,7 @@ static u64 get_cpu_usage_nsec_self(int fd)
struct sched_thread_parms {
struct task_desc *task;
struct perf_sched *sched;
+ int fd;
};
static void *thread_func(void *ctx)
@@ -482,13 +483,12 @@ static void *thread_func(void *ctx)
u64 cpu_usage_0, cpu_usage_1;
unsigned long i, ret;
char comm2[22];
- int fd;
+ int fd = parms->fd;
zfree(&parms);
sprintf(comm2, ":%s", this_task->comm);
prctl(PR_SET_NAME, comm2);
- fd = self_open_counters();
if (fd < 0)
return NULL;
again:
@@ -540,6 +540,7 @@ static void create_tasks(struct perf_sched *sched)
BUG_ON(parms == NULL);
parms->task = task = sched->tasks[i];
parms->sched = sched;
+ parms->fd = self_open_counters();
sem_init(&task->sleep_sem, 0, 0);
sem_init(&task->ready_for_work, 0, 0);
sem_init(&task->work_done_sem, 0, 0);
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