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authorJohn Hawkes <hawkes@sgi.com>2005-10-29 18:17:01 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-10-29 21:40:45 -0700
commit2f96996de0eda378df2a5f857ee1ef615ae10a4f (patch)
treeee3075c48a99369c9748ee17d3bb8396e9f38372 /mm/page_alloc.c
parent5fcbb23050936d69de8087d4b311eaf55cb42740 (diff)
downloadop-kernel-dev-2f96996de0eda378df2a5f857ee1ef615ae10a4f.zip
op-kernel-dev-2f96996de0eda378df2a5f857ee1ef615ae10a4f.tar.gz
[PATCH] mm: wider use of for_each_*cpu()
In 'mm' change the explicit use of a for-loop using NR_CPUS into the general for_each_cpu() constructs. This widens the scope of potential future optimizations of the general constructs, as well as takes advantage of the existing optimizations of first_cpu() and next_cpu(), which is advantageous when the true CPU count is much smaller than NR_CPUS. Signed-off-by: John Hawkes <hawkes@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm/page_alloc.c')
-rw-r--r--mm/page_alloc.c5
1 files changed, 1 insertions, 4 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 183abf3..2dbdd98 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1331,12 +1331,9 @@ void show_free_areas(void)
} else
printk("\n");
- for (cpu = 0; cpu < NR_CPUS; ++cpu) {
+ for_each_cpu(cpu) {
struct per_cpu_pageset *pageset;
- if (!cpu_possible(cpu))
- continue;
-
pageset = zone_pcp(zone, cpu);
for (temperature = 0; temperature < 2; temperature++)
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