RE: [PATCH 13/16] percpu: remove per_cpu__ prefix.
From: Christoph Lameter
Date: Wed Oct 14 2009 - 14:30:44 EST
On Wed, 14 Oct 2009, Luck, Tony wrote:
> But that would leave no visual indicator in the source
> code that a per-cpu variable was being used. E.g. in
> delayed_tlb_flush() we'd end up with:
we would still have to use per cpu operations to get to the contents of
these variables.
>
> if (unlikely(ia64_need_tlb_flush)) {
if (unlikely(this_cpu_read(ia64_need_tlb_flush))
> spin_lock ...
> if (ia64_need_tlb_flush) {
ditto.
> local_flush_tlb_all();
> ia64_need_tlb_flush = 0;
this_cpu_write(ia64_need_tlb_flush, 0);
> }
> spin_unlock ...
> }
>
Hope that addresses your concerns.
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