Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754631Ab0FPJQb (ORCPT ); Wed, 16 Jun 2010 05:16:31 -0400 Received: from verein.lst.de ([213.95.11.210]:51290 "EHLO verein.lst.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751249Ab0FPJQa (ORCPT ); Wed, 16 Jun 2010 05:16:30 -0400 Date: Wed, 16 Jun 2010 11:16:21 +0200 From: Christoph Hellwig To: x86@kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] x86-32: remove CONFIG_4KSTACKS Message-ID: <20100616091621.GA4486@lst.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.3.28i X-Spam-Score: 0 () Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2436 Lines: 65 These days 4 kilobytes of stack just aren't enough for reliably operation, and people using lots of threads have long switched to x86-64, so remove the CONFIG_4KSTACKS option. Signed-off-by: Christoph Hellwig Index: linux-2.6/arch/x86/Kconfig.debug =================================================================== --- linux-2.6.orig/arch/x86/Kconfig.debug 2010-06-16 10:24:06.902272433 +0200 +++ linux-2.6/arch/x86/Kconfig.debug 2010-06-16 10:24:11.837068354 +0200 @@ -121,15 +121,6 @@ config DEBUG_NX_TEST and the software setup of this feature. If in doubt, say "N" -config 4KSTACKS - bool "Use 4Kb for kernel stacks instead of 8Kb" - depends on X86_32 - ---help--- - If you say Y here the kernel will use a 4Kb stacksize for the - kernel stack attached to each process/thread. This facilitates - running more threads on a system and also reduces the pressure - on the VM subsystem for higher order allocations. - config DOUBLEFAULT default y bool "Enable doublefault exception handler" if EMBEDDED Index: linux-2.6/arch/x86/include/asm/module.h =================================================================== --- linux-2.6.orig/arch/x86/include/asm/module.h 2010-06-16 10:24:06.922004449 +0200 +++ linux-2.6/arch/x86/include/asm/module.h 2010-06-16 10:24:23.255291640 +0200 @@ -60,12 +60,7 @@ #endif #ifdef CONFIG_X86_32 -# ifdef CONFIG_4KSTACKS -# define MODULE_STACKSIZE "4KSTACKS " -# else -# define MODULE_STACKSIZE "" -# endif -# define MODULE_ARCH_VERMAGIC MODULE_PROC_FAMILY MODULE_STACKSIZE +# define MODULE_ARCH_VERMAGIC MODULE_PROC_FAMILY #endif #endif /* _ASM_X86_MODULE_H */ Index: linux-2.6/arch/x86/include/asm/page_32_types.h =================================================================== --- linux-2.6.orig/arch/x86/include/asm/page_32_types.h 2010-06-16 10:24:06.933273132 +0200 +++ linux-2.6/arch/x86/include/asm/page_32_types.h 2010-06-16 10:24:30.251005496 +0200 @@ -15,11 +15,7 @@ */ #define __PAGE_OFFSET _AC(CONFIG_PAGE_OFFSET, UL) -#ifdef CONFIG_4KSTACKS -#define THREAD_ORDER 0 -#else #define THREAD_ORDER 1 -#endif #define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER) #define STACKFAULT_STACK 0 -- 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/