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-rw-r--r--mm/page_alloc.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index f4e929e356db..1a3a893ef50e 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -3142,6 +3142,32 @@ int zone_wait_table_init(struct zone *zone, unsigned long zone_size_pages)
return 0;
}
+static int __zone_pcp_update(void *data)
+{
+ struct zone *zone = data;
+ int cpu;
+ unsigned long batch = zone_batchsize(zone), flags;
+
+ for (cpu = 0; cpu < NR_CPUS; cpu++) {
+ struct per_cpu_pageset *pset;
+ struct per_cpu_pages *pcp;
+
+ pset = zone_pcp(zone, cpu);
+ pcp = &pset->pcp;
+
+ local_irq_save(flags);
+ free_pages_bulk(zone, pcp->count, &pcp->list, 0);
+ setup_pageset(pset, batch);
+ local_irq_restore(flags);
+ }
+ return 0;
+}
+
+void zone_pcp_update(struct zone *zone)
+{
+ stop_machine(__zone_pcp_update, zone, NULL);
+}
+
static __meminit void zone_pcp_init(struct zone *zone)
{
int cpu;