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| author | Wu Fengguang <fengguang.wu@intel.com> | 2010-05-24 14:32:49 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-05-25 08:07:01 -0700 |
| commit | 319774e25fa4b7641bdc3b0a464dd84e62103347 (patch) | |
| tree | 6865aee1b58fff5d7042fbdcb989ee7751660bcc /mm/page_alloc.c | |
| parent | 0faa56389c793cda7f967117415717bbab24fe4e (diff) | |
| download | lwn-319774e25fa4b7641bdc3b0a464dd84e62103347.tar.gz lwn-319774e25fa4b7641bdc3b0a464dd84e62103347.zip | |
mem-hotplug: separate setup_per_cpu_pageset() into separate functions
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>
Diffstat (limited to 'mm/page_alloc.c')
| -rw-r--r-- | mm/page_alloc.c | 37 |
1 files changed, 20 insertions, 17 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 8f4f27841b71..595d0ac211e2 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -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 |