Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux-2.6.git] / kernel / sched.c
index c0d2067..5a5cc33 100644 (file)
@@ -4645,7 +4645,7 @@ recheck:
        }
 
        if (user) {
-               retval = security_task_setscheduler(p, policy, param);
+               retval = security_task_setscheduler(p);
                if (retval)
                        return retval;
        }
@@ -4887,7 +4887,7 @@ long sched_setaffinity(pid_t pid, const struct cpumask *in_mask)
        if (!check_same_owner(p) && !capable(CAP_SYS_NICE))
                goto out_unlock;
 
-       retval = security_task_setscheduler(p, 0, NULL);
+       retval = security_task_setscheduler(p);
        if (retval)
                goto out_unlock;
 
@@ -5337,7 +5337,19 @@ void __cpuinit init_idle(struct task_struct *idle, int cpu)
        idle->se.exec_start = sched_clock();
 
        cpumask_copy(&idle->cpus_allowed, cpumask_of(cpu));
+       /*
+        * We're having a chicken and egg problem, even though we are
+        * holding rq->lock, the cpu isn't yet set to this cpu so the
+        * lockdep check in task_group() will fail.
+        *
+        * Similar case to sched_fork(). / Alternatively we could
+        * use task_rq_lock() here and obtain the other rq->lock.
+        *
+        * Silence PROVE_RCU
+        */
+       rcu_read_lock();
        __set_task_cpu(idle, cpu);
+       rcu_read_unlock();
 
        rq->curr = rq->idle = idle;
 #if defined(CONFIG_SMP) && defined(__ARCH_WANT_UNLOCKED_CTXSW)