From 56ec095321a04670553efb4a9fe1f6a2558de5ab Mon Sep 17 00:00:00 2001
From: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
Date: Fri, 9 Nov 2007 22:39:39 +0100
Subject: [PATCH] --- yaml --- r: 73407 b: refs/heads/master c:
 3c90e6e99b08f01d5684a3a07cceae6a543e4fa8 h: refs/heads/master i:   73405:
 f29c9e19eda616db42aee0f7e42de55c543cff85   73403:
 05e05b22b8ef71144e427cf6db8a04a279d4e35b   73399:
 7a98f08579b0fd1d1663d83a3a0d4938da5afa7b   73391:
 a7814db8c7dc413ac396cd2c8e8975758660b8d8   73375:
 1063f928c20b02584812ab131525d53fba76ddc9   73343:
 0e75578b3b44ddffd06621ff373cafc93821660b v: v3

---
 [refs]                    | 2 +-
 trunk/kernel/fork.c       | 6 +++---
 trunk/kernel/sched_fair.c | 3 ++-
 3 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/[refs] b/[refs]
index 97e81e691884..0e103fb0e10c 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 502d26b524d8980f3ed80d9aec398e85671a8160
+refs/heads/master: 3c90e6e99b08f01d5684a3a07cceae6a543e4fa8
diff --git a/trunk/kernel/fork.c b/trunk/kernel/fork.c
index 28a740151988..8ca1a14cdc8c 100644
--- a/trunk/kernel/fork.c
+++ b/trunk/kernel/fork.c
@@ -1123,6 +1123,9 @@ static struct task_struct *copy_process(unsigned long clone_flags,
 	p->blocked_on = NULL; /* not blocked yet */
 #endif
 
+	/* Perform scheduler related setup. Assign this task to a CPU. */
+	sched_fork(p, clone_flags);
+
 	if ((retval = security_task_alloc(p)))
 		goto bad_fork_cleanup_policy;
 	if ((retval = audit_alloc(p)))
@@ -1212,9 +1215,6 @@ static struct task_struct *copy_process(unsigned long clone_flags,
 	INIT_LIST_HEAD(&p->ptrace_children);
 	INIT_LIST_HEAD(&p->ptrace_list);
 
-	/* Perform scheduler related setup. Assign this task to a CPU. */
-	sched_fork(p, clone_flags);
-
 	/* Now that the task is set up, run cgroup callbacks if
 	 * necessary. We need to run them before the task is visible
 	 * on the tasklist. */
diff --git a/trunk/kernel/sched_fair.c b/trunk/kernel/sched_fair.c
index 6c361472cc74..d3c03070872d 100644
--- a/trunk/kernel/sched_fair.c
+++ b/trunk/kernel/sched_fair.c
@@ -1067,8 +1067,9 @@ static void task_new_fair(struct rq *rq, struct task_struct *p)
 	update_curr(cfs_rq);
 	place_entity(cfs_rq, se, 1);
 
+	/* 'curr' will be NULL if the child belongs to a different group */
 	if (sysctl_sched_child_runs_first && this_cpu == task_cpu(p) &&
-			curr->vruntime < se->vruntime) {
+			curr && curr->vruntime < se->vruntime) {
 		/*
 		 * Upon rescheduling, sched_class::put_prev_task() will place
 		 * 'current' within the tree based on its new key value.