From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754424Ab3JFTcW (ORCPT ); Sun, 6 Oct 2013 15:32:22 -0400 Received: from smtprelay0164.hostedemail.com ([216.40.44.164]:55764 "EHLO smtprelay.hostedemail.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754389Ab3JFTcV (ORCPT ); Sun, 6 Oct 2013 15:32:21 -0400 X-Session-Marker: 6A6F6540706572636865732E636F6D X-Spam-Summary: 2,0,0,,d41d8cd98f00b204,joe@perches.com,:::,RULES_HIT:41:355:379:541:800:960:973:988:989:1260:1261:1277:1311:1313:1314:1345:1373:1437:1515:1516:1518:1534:1541:1593:1594:1711:1730:1747:1777:1792:2393:2559:2562:2828:3138:3139:3140:3141:3142:3352:3865:3866:3872:5007:7652:10004:10400:10848:11026:11658:11914:12296:12517:12519:12555:13069:13311:13357,0,RBL:none,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fn,MSBL:0,DNSBL:none,Custom_rules:0:0:0 X-HE-Tag: oven48_88af016e1b65c X-Filterd-Recvd-Size: 1737 Message-ID: <1381087937.2081.151.camel@joe-AO722> Subject: [PATCH] printk: Mark printk_once test variable __read_mostly From: Joe Perches To: Andrew Morton Cc: LKML Date: Sun, 06 Oct 2013 12:32:17 -0700 Content-Type: text/plain; charset="ISO-8859-1" X-Mailer: Evolution 3.6.4-0ubuntu1 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org It's only set once so mark it __read_mostly. Neaten the alignment so it matches the rest of the pr__once #defines too. Signed-off-by: Joe Perches --- include/linux/printk.h | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/include/linux/printk.h b/include/linux/printk.h index e6131a78..abd42dd 100644 --- a/include/linux/printk.h +++ b/include/linux/printk.h @@ -251,17 +251,17 @@ extern asmlinkage void dump_stack(void) __cold; */ #ifdef CONFIG_PRINTK -#define printk_once(fmt, ...) \ -({ \ - static bool __print_once; \ - \ - if (!__print_once) { \ - __print_once = true; \ - printk(fmt, ##__VA_ARGS__); \ - } \ +#define printk_once(fmt, ...) \ +({ \ + static bool __print_once __read_mostly; \ + \ + if (!__print_once) { \ + __print_once = true; \ + printk(fmt, ##__VA_ARGS__); \ + } \ }) #else -#define printk_once(fmt, ...) \ +#define printk_once(fmt, ...) \ no_printk(fmt, ##__VA_ARGS__) #endif