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authorIngo Molnar <mingo@elte.hu>2010-07-05 08:30:55 +0200
committerIngo Molnar <mingo@elte.hu>2010-07-05 08:30:58 +0200
commit08f8ba07998ab1b9efcdd3f28dadf6866a605ddb (patch)
tree8e09855446f7b0312bb729d4b539090756e57927 /init
parent0879b100f3c187257729f36cba33d96ec2875766 (diff)
parent815c4163b6c8ebf8152f42b0a5fd015cfdcedc78 (diff)
downloadkernel-08f8ba07998ab1b9efcdd3f28dadf6866a605ddb.tar.gz
Merge commit 'v2.6.35-rc4' into perf/core
Merge reason: Pick up the latest perf fixes Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'init')
-rw-r--r--init/main.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/init/main.c b/init/main.c
index e407a05adc29..4ab5124a2952 100644
--- a/init/main.c
+++ b/init/main.c
@@ -422,18 +422,26 @@ static void __init setup_command_line(char *command_line)
* gcc-3.4 accidentally inlines this function, so use noinline.
*/
+static __initdata DECLARE_COMPLETION(kthreadd_done);
+
static noinline void __init_refok rest_init(void)
__releases(kernel_lock)
{
int pid;
rcu_scheduler_starting();
+ /*
+ * We need to spawn init first so that it obtains pid 1, however
+ * the init task will end up wanting to create kthreads, which, if
+ * we schedule it before we create kthreadd, will OOPS.
+ */
kernel_thread(kernel_init, NULL, CLONE_FS | CLONE_SIGHAND);
numa_default_policy();
pid = kernel_thread(kthreadd, NULL, CLONE_FS | CLONE_FILES);
rcu_read_lock();
kthreadd_task = find_task_by_pid_ns(pid, &init_pid_ns);
rcu_read_unlock();
+ complete(&kthreadd_done);
unlock_kernel();
/*
@@ -849,6 +857,10 @@ static noinline int init_post(void)
static int __init kernel_init(void * unused)
{
+ /*
+ * Wait until kthreadd is all set-up.
+ */
+ wait_for_completion(&kthreadd_done);
lock_kernel();
/*