| Date | Fri, 26 Nov 2010 17:25:45 +0100 | From | Tejun Heo <> | Subject | Re: [thiscpuops upgrade 02/10] vmstat: Optimize zone counter modifications through the use of this cpu operations |
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On 11/24/2010 12:51 AM, Christoph Lameter wrote: > this cpu operations can be used to slightly optimize the function. The > changes will avoid some address calculations and replace them with the > use of the percpu segment register. > > If one would have this_cpu_inc_return and this_cpu_dec_return then it > would be possible to optimize inc_zone_page_state and dec_zone_page_state even > more. > > Signed-off-by: Christoph Lameter <cl@linux.com>
Looks correct to me but it would be nice to run this through sparse.
Thanks.
-- tejun
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