From e99b861a3e9ec93a48b985519e09b2515c201e8d Mon Sep 17 00:00:00 2001
From: Andi Kleen <ak@suse.de>
Date: Mon, 12 Sep 2005 18:49:24 +0200
Subject: [PATCH] [PATCH] x86-64: Only allocate per cpu data for possible CPUs,
not compiled in CPUs.
Saves some memory except for hotplug situations.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
arch/x86_64/kernel/setup64.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86_64/kernel/setup64.c b/arch/x86_64/kernel/setup64.c
index e8b54dccb3ee..bd33be24a386 100644
--- a/arch/x86_64/kernel/setup64.c
+++ b/arch/x86_64/kernel/setup64.c
@@ -94,7 +94,7 @@ void __init setup_per_cpu_areas(void)
size = PERCPU_ENOUGH_ROOM;
#endif
- for (i = 0; i < NR_CPUS; i++) {
+ for_each_cpu_mask (i, cpu_possible_map) {
char *ptr;
if (!NODE_DATA(cpu_to_node(i))) {