[PATCH 1/3] mem-hotplug: separate setup_per_cpu_pageset() into separate functions
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From: Haicheng Li on 17 May 2010 04:20 From: Wu Fengguang <fengguang.wu(a)intel.com> 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(a)intel.com> Signed-off-by: Haicheng Li <haicheng.li(a)linux.intel.com> Reviewed-by: Andi Kleen <andi.kleen(a)intel.com> --- 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 d03c946..3eb7c31 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -3146,31 +3146,34 @@ 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 -- 1.6.0.rc1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |