Commit-ID: 8a173b1476d126674104c7c5c6cef0bcd824b001 Gitweb: http://git.kernel.org/tip/8a173b1476d126674104c7c5c6cef0bcd824b001 Author: Christian Borntraeger <borntraeger@xxxxxxxxxx> AuthorDate: Tue, 29 May 2012 11:18:44 +0200 Committer: Ingo Molnar <mingo@xxxxxxxxxx> CommitDate: Wed, 6 Jun 2012 11:34:20 +0200 spinlock: Indicate that a lockup is only suspected On an over-committed KVM system we got a: "BUG: spinlock lockup on CPU#2, swapper/2/0" message on the heavily contended virtio blk spinlock. While we might want to reconsider the locking of virtio-blk (lock is held while switching to the host) this patch tries to make the message clearer: the lockup is only suspected. Signed-off-by: Christian Borntraeger <borntraeger@xxxxxxxxxx> Cc: Rusty Russell <rusty@xxxxxxxxxxxxxxx> Cc: Michael S. Tsirkin <mst@xxxxxxxxxx> Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> Link: http://lkml.kernel.org/r/1338283124-7063-1-git-send-email-borntraeger@xxxxxxxxxx Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> --- lib/spinlock_debug.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/lib/spinlock_debug.c b/lib/spinlock_debug.c index d0ec4f3..e91fbc2 100644 --- a/lib/spinlock_debug.c +++ b/lib/spinlock_debug.c @@ -118,7 +118,7 @@ static void __spin_lock_debug(raw_spinlock_t *lock) /* lockup suspected: */ if (print_once) { print_once = 0; - spin_dump(lock, "lockup"); + spin_dump(lock, "lockup suspected"); #ifdef CONFIG_SMP trigger_all_cpu_backtrace(); #endif -- 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