From: Paul E. McKenney Date: Mon, 16 May 2011 09:44:06 +0000 (-0700) Subject: rcu: Remove old memory barriers from rcu_process_callbacks() X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=1135633bddcf7a819a1490c18d04965c490bcc1e;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git rcu: Remove old memory barriers from rcu_process_callbacks() Second step of partitioning of commit e59fb3120b. Signed-off-by: Paul E. McKenney --- diff --git a/kernel/rcutree.c b/kernel/rcutree.c index 3731141d8ad7..011bf6f261a2 100644 --- a/kernel/rcutree.c +++ b/kernel/rcutree.c @@ -1460,25 +1460,11 @@ __rcu_process_callbacks(struct rcu_state *rsp, struct rcu_data *rdp) */ static void rcu_process_callbacks(void) { - /* - * Memory references from any prior RCU read-side critical sections - * executed by the interrupted code must be seen before any RCU - * grace-period manipulations below. - */ - smp_mb(); /* See above block comment. */ - __rcu_process_callbacks(&rcu_sched_state, &__get_cpu_var(rcu_sched_data)); __rcu_process_callbacks(&rcu_bh_state, &__get_cpu_var(rcu_bh_data)); rcu_preempt_process_callbacks(); - /* - * Memory references from any later RCU read-side critical sections - * executed by the interrupted code must be seen after any RCU - * grace-period manipulations above. - */ - smp_mb(); /* See above block comment. */ - /* If we are last CPU on way to dyntick-idle mode, accelerate it. */ rcu_needs_cpu_flush(); }