From: Matt Mackall <mpm@selenic.com>
Date: Tue, 29 Apr 2008 08:03:01 +0000 (-0700)
Subject: random: remove cacheline alignment for locks
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=433582093a9dc5454ba03b4a7ea201d85e6aa4de;p=sagit-ice-cold%2Fkernel_xiaomi_msm8998.git

random: remove cacheline alignment for locks

Earlier changes greatly reduce the number of times we grab the lock
per output byte, so we shouldn't need this particular hack any more.

Signed-off-by: Matt Mackall <mpm@selenic.com>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/drivers/char/random.c b/drivers/char/random.c
index e52f64cbef04..973706e97e77 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -395,7 +395,7 @@ module_param(debug, bool, 0644);
 
 struct entropy_store;
 struct entropy_store {
-	/* mostly-read data: */
+	/* read-only data: */
 	struct poolinfo *poolinfo;
 	__u32 *pool;
 	const char *name;
@@ -403,7 +403,7 @@ struct entropy_store {
 	struct entropy_store *pull;
 
 	/* read-write data: */
-	spinlock_t lock ____cacheline_aligned_in_smp;
+	spinlock_t lock;
 	unsigned add_ptr;
 	int entropy_count;
 	int input_rotate;