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 <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Andi Kleen <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
mrcsosa · Oct 17, 2007 · 3806204 · 3806204
1 parent 97b4303
commit 3806204
Showing 1 changed file with 0 additions and 3 deletions.
diff --git a/arch/x86/kernel/mce_64.c b/arch/x86/kernel/mce_64.c
@@ -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. */