Re: [PATCH 0/7] preempt_count rework -v2

[Peter Zijlstra]

On Tue, Sep 10, 2013 at 08:29:16AM -0700, Arjan van de Ven wrote:

> also.. yuck on using "dec" "dec" sucks, please use "sub foo  ,1"
> instead (dec sucks because of its broken flags behavior; it creates
> basically a bubble in the pipeline)

Then someone needs to go change:

  atomic{,64}_dec*()
  local{,64}_dec*()
  percpu_add_op()

All of which use decl/incl, percpu_add_op() actually goes out of its way
to generate them.

Also, subl ,1 is 4 bytes larger.
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