[this_cpu_xx V8 02/16] this_cpu ops: Remove pageset_notifier

[Christoph Lameter]

Remove the pageset notifier since it only marks that a processor
exists on a specific node. Move that code into the vmstat notifier.

Signed-off-by: Christoph Lameter <cl@xxxxxxxxxxxxxxxxxxxx>

---
 mm/page_alloc.c |   27 ---------------------------
 mm/vmstat.c     |    1 +
 2 files changed, 1 insertion(+), 27 deletions(-)

Index: linux-2.6/mm/vmstat.c
===================================================================
--- linux-2.6.orig/mm/vmstat.c	2009-12-18 13:15:32.000000000 -0600
+++ linux-2.6/mm/vmstat.c	2009-12-18 13:37:41.000000000 -0600
@@ -908,6 +908,7 @@ static int __cpuinit vmstat_cpuup_callba
 	case CPU_ONLINE:
 	case CPU_ONLINE_FROZEN:
 		start_cpu_timer(cpu);
+		node_set_state(cpu_to_node(cpu), N_CPU);
 		break;
 	case CPU_DOWN_PREPARE:
 	case CPU_DOWN_PREPARE_FROZEN:
Index: linux-2.6/mm/page_alloc.c
===================================================================
--- linux-2.6.orig/mm/page_alloc.c	2009-12-18 13:34:02.000000000 -0600
+++ linux-2.6/mm/page_alloc.c	2009-12-18 13:39:19.000000000 -0600
@@ -3122,27 +3122,6 @@ static void setup_pagelist_highmark(stru
 		pcp->batch = PAGE_SHIFT * 8;
 }
 
-
-static int __cpuinit pageset_cpuup_callback(struct notifier_block *nfb,
-		unsigned long action,
-		void *hcpu)
-{
-	int cpu = (long)hcpu;
-
-	switch (action) {
-	case CPU_UP_PREPARE:
-	case CPU_UP_PREPARE_FROZEN:
-		node_set_state(cpu_to_node(cpu), N_CPU);
-		break;
-	default:
-		break;
-	}
-	return ret;
-}
-
-static struct notifier_block __cpuinitdata pageset_notifier =
-	{ &pageset_cpuup_callback, NULL, 0 };
-
 /*
  * Allocate per cpu pagesets and initialize them.
  * Before this call only boot pagesets were available.
@@ -3168,12 +3147,6 @@ void __init setup_per_cpu_pageset(void)
 						percpu_pagelist_fraction));
 		}
 	}
-	/*
-	 * The boot cpu is always the first active.
-	 * The boot node has a processor.
-	 */
-	node_set_state(cpu_to_node(smp_processor_id()), N_CPU);
-	register_cpu_notifier(&pageset_notifier);
 }
 
 static noinline __init_refok

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