Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752704AbZIJX5g (ORCPT ); Thu, 10 Sep 2009 19:57:36 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752338AbZIJX5f (ORCPT ); Thu, 10 Sep 2009 19:57:35 -0400 Received: from mail3.caviumnetworks.com ([12.108.191.235]:16086 "EHLO mail3.caviumnetworks.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751028AbZIJX5d (ORCPT ); Thu, 10 Sep 2009 19:57:33 -0400 From: David Daney To: torvalds@linux-foundation.org, akpm@linux-foundation.org Cc: linux-kernel@vger.kernel.org, David Daney , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , x86@kernel.org Subject: [PATCH 02/10] x86: Convert BUG() to use unreachable() Date: Thu, 10 Sep 2009 16:56:43 -0700 Message-Id: <1252627011-2933-2-git-send-email-ddaney@caviumnetworks.com> X-Mailer: git-send-email 1.6.0.6 In-Reply-To: <4AA991C1.1050800@caviumnetworks.com> References: <4AA991C1.1050800@caviumnetworks.com> X-OriginalArrivalTime: 10 Sep 2009 23:57:04.0829 (UTC) FILETIME=[65C106D0:01CA3272] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1251 Lines: 42 Use the new unreachable() macro instead of for(;;);. When allyesconfig is built with a GCC-4.5 snapshot on i686 the size of the text segment is reduced by 3987 bytes (from 6827019 to 6823032). Signed-off-by: David Daney CC: Thomas Gleixner CC: Ingo Molnar CC: "H. Peter Anvin" CC: x86@kernel.org --- arch/x86/include/asm/bug.h | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/include/asm/bug.h b/arch/x86/include/asm/bug.h index d9cf1cd..f654d1b 100644 --- a/arch/x86/include/asm/bug.h +++ b/arch/x86/include/asm/bug.h @@ -22,14 +22,14 @@ do { \ ".popsection" \ : : "i" (__FILE__), "i" (__LINE__), \ "i" (sizeof(struct bug_entry))); \ - for (;;) ; \ + unreachable(); \ } while (0) #else #define BUG() \ do { \ asm volatile("ud2"); \ - for (;;) ; \ + unreachable(); \ } while (0) #endif -- 1.6.2.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/