sched: Delay task_contributes_to_load()

[platform/adaptation/renesas_rcar/renesas_kernel.git] / kernel / perf_event.c

diff --git a/kernel/perf_event.c b/kernel/perf_event.c
index 0c71422..27960f1 100644 (file)
--- a/kernel/perf_event.c
+++ b/kernel/perf_event.c
@@ -145,7 +145,8 @@ static struct srcu_struct pmus_srcu;
  */
 int sysctl_perf_event_paranoid __read_mostly = 1;
 
-int sysctl_perf_event_mlock __read_mostly = 512; /* 'free' kb per user */
+/* Minimum for 512 kiB + 1 user control page */
+int sysctl_perf_event_mlock __read_mostly = 512 + (PAGE_SIZE / 1024); /* 'free' kiB per user */
 
 /*
  * max perf event sample rate
@@ -6530,6 +6531,11 @@ SYSCALL_DEFINE5(perf_event_open,
                goto err_alloc;
        }
 
+       if (task) {
+               put_task_struct(task);
+               task = NULL;
+       }
+
        /*
         * Look up the group leader (we will attach this event to it):
         */