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mem-hotplug: separate setup_per_cpu_pageset() into separate functions

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No behavior change here.

Move some of setup_per_cpu_pageset() code into a new function
setup_zone_pageset() that will be useful for memory hotplug.

Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Haicheng Li <haicheng.li@linux.intel.com>
Reviewed-by: Andi Kleen <andi.kleen@intel.com>
Reviewed-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Wu Fengguang 2010-05-24 14:32:49 -07:00 committed by Linus Torvalds
parent 0faa56389c
commit 319774e25f
1 changed files with 20 additions and 17 deletions
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37
mm/page_alloc.c
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@ -3292,31 +3292,34 @@ static void setup_pagelist_highmark(struct per_cpu_pageset *p,
pcp->batch = PAGE_SHIFT * 8;
}
static __meminit void setup_zone_pageset(struct zone *zone)
{
int cpu;
zone->pageset = alloc_percpu(struct per_cpu_pageset);
for_each_possible_cpu(cpu) {
struct per_cpu_pageset *pcp = per_cpu_ptr(zone->pageset, cpu);
setup_pageset(pcp, zone_batchsize(zone));
if (percpu_pagelist_fraction)
setup_pagelist_highmark(pcp,
(zone->present_pages /
percpu_pagelist_fraction));
}
}
/*
* Allocate per cpu pagesets and initialize them.
* Before this call only boot pagesets were available.
* Boot pagesets will no longer be used by this processorr
* after setup_per_cpu_pageset().
*/
void __init setup_per_cpu_pageset(void)
{
struct zone *zone;
int cpu;
for_each_populated_zone(zone) {
zone->pageset = alloc_percpu(struct per_cpu_pageset);
for_each_possible_cpu(cpu) {
struct per_cpu_pageset *pcp = per_cpu_ptr(zone->pageset, cpu);
setup_pageset(pcp, zone_batchsize(zone));
if (percpu_pagelist_fraction)
setup_pagelist_highmark(pcp,
(zone->present_pages /
percpu_pagelist_fraction));
}
}
for_each_populated_zone(zone)
setup_zone_pageset(zone);
}
static noinline __init_refok