Messages in this thread Patch in this message |  | | | Date | Mon, 5 Oct 2009 10:55:49 -0400 (EDT) | | From | Christoph Lameter <> | | Subject | Re: [this_cpu_xx V4 13/20] this_cpu_ops: page allocator conversion |
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Changes to this patch so far:
Index: linux-2.6/mm/page_alloc.c =================================================================== --- linux-2.6.orig/mm/page_alloc.c 2009-10-05 09:49:07.000000000 -0500 +++ linux-2.6/mm/page_alloc.c 2009-10-05 09:48:43.000000000 -0500 @@ -1098,8 +1098,6 @@ static void free_hot_cold_page(struct pa arch_free_page(page, 0); kernel_map_pages(page, 1, 0);
- local_irq_save(flags); - pcp = &this_cpu_ptr(zone->pageset)->pcp; migratetype = get_pageblock_migratetype(page); set_page_private(page, migratetype); if (unlikely(wasMlocked)) @@ -1121,6 +1119,8 @@ static void free_hot_cold_page(struct pa migratetype = MIGRATE_MOVABLE; }
+ local_irq_save(flags); + pcp = &this_cpu_ptr(zone->pageset)->pcp; if (cold) list_add_tail(&page->lru, &pcp->lists[migratetype]); else @@ -3120,7 +3120,8 @@ static struct notifier_block __cpuinitda /* * Allocate per cpu pagesets and initialize them. * Before this call only boot pagesets were available. - * Boot pagesets will no longer be used after this call is complete. + * Boot pagesets will no longer be used by this processorr + * after setup_per_cpu_pageset(). */ void __init setup_per_cpu_pageset(void) { @@ -3232,11 +3233,11 @@ __meminit void setup_pagesets(void) zone->pageset = &per_cpu_var(boot_pageset);
/* - * Special pagesets with zero elements so that frees + * Special pagesets with one element so that frees * and allocations are not buffered at all. */ for_each_possible_cpu(cpu) - setup_pageset(per_cpu_ptr(zone->pageset, cpu), 0); + setup_pageset(per_cpu_ptr(zone->pageset, cpu), 1);
} }
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