Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750772AbWAOUsH (ORCPT ); Sun, 15 Jan 2006 15:48:07 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750786AbWAOUr4 (ORCPT ); Sun, 15 Jan 2006 15:47:56 -0500 Received: from saraswathi.solana.com ([198.99.130.12]:30371 "EHLO saraswathi.solana.com") by vger.kernel.org with ESMTP id S1750773AbWAOUrw (ORCPT ); Sun, 15 Jan 2006 15:47:52 -0500 Message-Id: <200601152139.k0FLdrwi027752@ccure.user-mode-linux.org> X-Mailer: exmh version 2.7.2 01/07/2005 with nmh-1.0.4 To: akpm@osdl.org cc: linux-kernel@vger.kernel.org, user-mode-linux-devel@lists.sourceforge.net Subject: [PATCH 10/11] UML - Use setjmp/longjmp instead of sigsetjmp/siglongjmp Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Sun, 15 Jan 2006 16:39:53 -0500 From: Jeff Dike Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1053 Lines: 32 Now that we are doing soft interrupts, there's no point in using sigsetjmp and siglongjmp. Using setjmp and longjmp saves a sigprocmask on every jump. Signed-off-by: Jeff Dike Index: linux-2.6.15-mm/arch/um/include/longjmp.h =================================================================== --- linux-2.6.15-mm.orig/arch/um/include/longjmp.h 2006-01-09 11:44:53.000000000 -0500 +++ linux-2.6.15-mm/arch/um/include/longjmp.h 2006-01-09 11:48:47.000000000 -0500 @@ -5,13 +5,13 @@ #include "os.h" #define UML_SIGLONGJMP(buf, val) do { \ - siglongjmp(*buf, val); \ + longjmp(*buf, val); \ } while(0) #define UML_SIGSETJMP(buf, enable) ({ \ int n; \ enable = get_signals(); \ - n = sigsetjmp(*buf, 1); \ + n = setjmp(*buf); \ if(n != 0) \ set_signals(enable); \ n; }) - 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/