From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail172.messagelabs.com (mail172.messagelabs.com [216.82.254.3]) by kanga.kvack.org (Postfix) with SMTP id A2A3A8D003C for ; Tue, 15 Mar 2011 22:28:07 -0400 (EDT) Message-ID: <20110316022804.27679.qmail@science.horizon.com> From: George Spelvin Date: Sun, 13 Mar 2011 20:20:44 -0400 Subject: [PATCH 1/8] drivers/random: Cache align ip_random better Sender: owner-linux-mm@kvack.org List-ID: To: penberg@cs.helsinki.fi, herbert@gondor.apana.org.au, mpm@selenic.com Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux@horizon.com Cache aligning the secret[] buffer makes copying from it infinitesimally more efficient. --- drivers/char/random.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/char/random.c b/drivers/char/random.c index 72a4fcb..4bcc4f2 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -1417,8 +1417,8 @@ static __u32 twothirdsMD4Transform(__u32 const buf[4], __u32 const in[12]) #define HASH_MASK ((1 << HASH_BITS) - 1) static struct keydata { - __u32 count; /* already shifted to the final position */ __u32 secret[12]; + __u32 count; /* already shifted to the final position */ } ____cacheline_aligned ip_keydata[2]; static unsigned int ip_cnt; -- 1.7.4.1 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org