Commit 3806204c authored Oct 16, 2007 by Paul E. McKenney Committed by Linus Torvalds Oct 17, 2007

Remove workaround for unimmunized rcu_dereference from mce_log()

Remove the rmb() from mce_log(), since the immunized version of
rcu_dereference() makes it unnecessary.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 97b43032

arch/x86/kernel/mce_64.c

+0 −3

Original line number	Diff line number	Diff line
		@@ -76,9 +76,6 @@ void mce_log(struct mce *mce)
		wmb();
		for (;;) {
		entry = rcu_dereference(mcelog.next);
		/* The rmb forces the compiler to reload next in each
		iteration */
		rmb();
		for (;;) {
		/* When the buffer fills up discard new entries. Assume
		that the earlier errors are the more interesting. */