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Date: Fri, 26 Nov 2010 17:25:45 +0100 From: Tejun Heo <tj@...nel.org> To: Christoph Lameter <cl@...ux.com> CC: akpm@...ux-foundation.org, Pekka Enberg <penberg@...helsinki.fi>, linux-kernel@...r.kernel.org, Eric Dumazet <eric.dumazet@...il.com>, Mathieu Desnoyers <mathieu.desnoyers@...icios.com>, Namhyung Kim <namhyung@...il.com> Subject: Re: [thiscpuops upgrade 02/10] vmstat: Optimize zone counter modifications through the use of this cpu operations 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@...ux.com> Looks correct to me but it would be nice to run this through sparse. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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