Commit-ID: 7db905e636f08ea5bc9825c1f73d77802e8ccad5
Gitweb: http://git.kernel.org/tip/7db905e636f08ea5bc9825c1f73d77802e8ccad5
Author: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
AuthorDate: Wed, 2 Sep 2009 14:01:24 -0700
Committer: Ingo Molnar <mingo@xxxxxxx>
CommitDate: Fri, 4 Sep 2009 09:29:34 +0200
rcu: Move end of special early-boot RCU operation earlier
Ingo was getting warnings from rcu_scheduler_starting()
indicating that context switches had occurred before RCU ended
its special early-boot handling of grace periods.
This is a dangerous condition, as it indicates that RCU might
have prematurely ended grace periods. This exploratory fix
moves rcu_scheduler_starting() earlier in boot.
Reported-by: Ingo Molnar <mingo@xxxxxxx>
Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
---
init/main.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/init/main.c b/init/main.c
index 11f4f14..525f6fb 100644
--- a/init/main.c
+++ b/init/main.c
@@ -451,6 +451,7 @@ static noinline void __init_refok rest_init(void)
{
int pid;
+ rcu_scheduler_starting();
kernel_thread(kernel_init, NULL, CLONE_FS | CLONE_SIGHAND);
numa_default_policy();
pid = kernel_thread(kthreadd, NULL, CLONE_FS | CLONE_FILES);
@@ -462,7 +463,6 @@ static noinline void __init_refok rest_init(void)
* at least once to get things moving:
*/
init_idle_bootup_task(current);
- rcu_scheduler_starting();
preempt_enable_no_resched();
schedule();
preempt_disable();
--
To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
|