Commits
Paul E. McKenney committed e90328b87ee
mce: Stop using array-index-based RCU primitives Because mce is arch-specific x86 code, there is little or no performance benefit of using rcu_dereference_index_check() over using smp_load_acquire(). It also turns out that mce is the only place that array-index-based RCU is used, and it would be convenient to drop this portion of the RCU API. This patch therefore changes rcu_dereference_index_check() uses to smp_load_acquire(), but keeping the lockdep diagnostics, and also changes rcu_access_index() uses to READ_ONCE(). Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: linux-edac@vger.kernel.org Cc: Tony Luck <tony.luck@intel.com> Acked-by: Borislav Petkov <bp@suse.de>