From d5a7430ddcdb598261d70f7eb1bf450b5be52085 Mon Sep 17 00:00:00 2001
From: Mike Travis <travis@sgi.com>
Date: Tue, 16 Oct 2007 01:24:05 -0700
Subject: Convert cpu_sibling_map to be a per cpu variable

Convert cpu_sibling_map from a static array sized by NR_CPUS to a per_cpu
variable.  This saves sizeof(cpumask_t) * NR unused cpus.  Access is mostly
from startup and CPU HOTPLUG functions.

Signed-off-by: Mike Travis <travis@sgi.com>
Cc: Andi Kleen <ak@suse.de>
Cc: Christoph Lameter <clameter@sgi.com>
Cc: "Siddha, Suresh B" <suresh.b.siddha@intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 block/blktrace.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'block/blktrace.c')

diff --git a/block/blktrace.c b/block/blktrace.c
index 775471ef84a..d00ac3993c1 100644
--- a/block/blktrace.c
+++ b/block/blktrace.c
@@ -550,7 +550,7 @@ static void blk_trace_set_ht_offsets(void)
 	for_each_online_cpu(cpu) {
 		unsigned long long *cpu_off, *sibling_off;
 
-		for_each_cpu_mask(i, cpu_sibling_map[cpu]) {
+		for_each_cpu_mask(i, per_cpu(cpu_sibling_map, cpu)) {
 			if (i == cpu)
 				continue;
 
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