Messages in this thread Patch in this message | | | From | Nick Piggin <> | Subject | [patch 8/12] mm: remove pcp low | Date | Mon, 21 Nov 2005 07:00:57 -0500 |
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struct per_cpu_pages.low is useless. Remove it.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Index: linux-2.6/include/linux/mmzone.h =================================================================== --- linux-2.6.orig/include/linux/mmzone.h +++ linux-2.6/include/linux/mmzone.h @@ -46,7 +46,6 @@ struct zone_padding { struct per_cpu_pages { int count; /* number of pages in the list */ - int low; /* low watermark, refill needed */ int high; /* high watermark, emptying needed */ int batch; /* chunk size for buddy add/remove */ struct list_head list; /* the list of pages */ Index: linux-2.6/mm/page_alloc.c =================================================================== --- linux-2.6.orig/mm/page_alloc.c +++ linux-2.6/mm/page_alloc.c @@ -719,7 +719,7 @@ buffered_rmqueue(struct zone *zone, int pcp = &zone_pcp(zone, get_cpu())->pcp[cold]; local_irq_save(flags); - if (pcp->count <= pcp->low) + if (!pcp->count) pcp->count += rmqueue_bulk(zone, 0, pcp->batch, &pcp->list); if (likely(pcp->count)) { @@ -1314,10 +1314,9 @@ void show_free_areas(void) pageset = zone_pcp(zone, cpu); for (temperature = 0; temperature < 2; temperature++) - printk("cpu %d %s: low %d, high %d, batch %d used:%d\n", + printk("cpu %d %s: high %d, batch %d used:%d\n", cpu, temperature ? "cold" : "hot", - pageset->pcp[temperature].low, pageset->pcp[temperature].high, pageset->pcp[temperature].batch, pageset->pcp[temperature].count); @@ -1761,14 +1760,12 @@ inline void setup_pageset(struct per_cpu pcp = &p->pcp[0]; /* hot */ pcp->count = 0; - pcp->low = 0; pcp->high = 6 * batch; pcp->batch = max(1UL, 1 * batch); INIT_LIST_HEAD(&pcp->list); pcp = &p->pcp[1]; /* cold*/ pcp->count = 0; - pcp->low = 0; pcp->high = 2 * batch; pcp->batch = max(1UL, batch/2); INIT_LIST_HEAD(&pcp->list); @@ -2164,12 +2161,10 @@ static int zoneinfo_show(struct seq_file seq_printf(m, "\n cpu: %i pcp: %i" "\n count: %i" - "\n low: %i" "\n high: %i" "\n batch: %i", i, j, pageset->pcp[j].count, - pageset->pcp[j].low, pageset->pcp[j].high, pageset->pcp[j].batch); } Send instant messages to your online friends http://au.messenger.yahoo.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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