Messages in this thread | | | Subject | Re: [PATCH RFC tip/core/rcu 11/11] rcu: move TREE_RCU from softirq to kthread | From | Peter Zijlstra <> | Date | Wed, 23 Feb 2011 20:23:50 +0100 |
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On Wed, 2011-02-23 at 13:19 -0600, Christoph Lameter wrote:
> this_cpu_inc is already percpu atomic. On x86 it is an instruction that > cannot be interrupted nor preempted while in progress.
On x86, yes, but is this true for all architectures? I guess the fallback is implemented with local_irq_disable() which might be good enough for some but not for NMI usage.
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