From: Miao Xie <miaox@cn.fujitsu.com>
Date: Thu, 23 Oct 2008 16:50:03 +0000 (+0000)
Subject: sched: fix the wrong mask_len
X-Git-Tag: v2.6.27.4~22
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=919e14cd03504d00e4ba13933ac229f7eca21444;p=karo-tx-linux.git

sched: fix the wrong mask_len

commit c851c8676bd7ae456e9b3af8e6bb2c434eddcc75 upstream

If NR_CPUS isn't a multiple of 32, we get a truncated string of sched
domains by catting /proc/schedstat. This is caused by the wrong mask_len.

This patch fixes it.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/kernel/sched_stats.h b/kernel/sched_stats.h
index 8385d43987e2..81365b3d89f8 100644
--- a/kernel/sched_stats.h
+++ b/kernel/sched_stats.h
@@ -9,7 +9,7 @@
 static int show_schedstat(struct seq_file *seq, void *v)
 {
 	int cpu;
-	int mask_len = NR_CPUS/32 * 9;
+	int mask_len = (NR_CPUS/32 + 1) * 9;
 	char *mask_str = kmalloc(mask_len, GFP_KERNEL);
 
 	if (mask_str == NULL)