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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>
This commit is contained in:
Paul E. McKenney 2007-10-16 23:26:05 -07:00 committed by Linus Torvalds
parent 97b430320c
commit 3806204ca9
1 changed files with 0 additions and 3 deletions
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3
arch/x86/kernel/mce_64.c
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@ -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. */