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-rw-r--r--crypto/xor.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/crypto/xor.c b/crypto/xor.c
index 87884435bddb..84daa1111dad 100644
--- a/crypto/xor.c
+++ b/crypto/xor.c
@@ -21,6 +21,7 @@
#include <linux/gfp.h>
#include <linux/raid/xor.h>
#include <linux/jiffies.h>
+#include <linux/preempt.h>
#include <asm/xor.h>
/* The xor routines to use. */
@@ -69,6 +70,8 @@ do_xor_speed(struct xor_block_template *tmpl, void *b1, void *b2)
tmpl->next = template_list;
template_list = tmpl;
+ preempt_disable();
+
/*
* Count the number of XORs done during a whole jiffy, and use
* this to calculate the speed of checksumming. We use a 2-page
@@ -91,6 +94,8 @@ do_xor_speed(struct xor_block_template *tmpl, void *b1, void *b2)
max = count;
}
+ preempt_enable();
+
speed = max * (HZ * BENCH_SIZE / 1024);
tmpl->speed = speed;