Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754680AbZILUsy (ORCPT ); Sat, 12 Sep 2009 16:48:54 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754500AbZILUsw (ORCPT ); Sat, 12 Sep 2009 16:48:52 -0400 Received: from mail-fx0-f217.google.com ([209.85.220.217]:57277 "EHLO mail-fx0-f217.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754496AbZILUsw (ORCPT ); Sat, 12 Sep 2009 16:48:52 -0400 From: "Kirill A. Shutemov" To: linux-arm-kernel@lists.infradead.org, Russell King Cc: linux-kernel@vger.kernel.org, Bityutskiy Artem , Siarhei Siamashka , "Kirill A. Shutemov" Subject: [PATCH v3 1/2] ARM: Introduce ARM_L1_CACHE_SHIFT to define cache line size Date: Sat, 12 Sep 2009 23:48:30 +0300 Message-Id: <188e5f14411c04ec999ef25bfe3616f77f1387b0.1252788311.git.kirill@shutemov.name> X-Mailer: git-send-email 1.6.4.2 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1379 Lines: 48 Currently kernel believes that all ARM CPUs have L1_CACHE_SHIFT == 5. It's not true at least for CPUs based on Cortex-A8. List of CPUs with cache line size != 32 should be expanded later. V2: - remove unnecessary parens Signed-off-by: Kirill A. Shutemov --- arch/arm/include/asm/cache.h | 2 +- arch/arm/mm/Kconfig | 5 +++++ 2 files changed, 6 insertions(+), 1 deletions(-) diff --git a/arch/arm/include/asm/cache.h b/arch/arm/include/asm/cache.h index feaa75f..66c160b 100644 --- a/arch/arm/include/asm/cache.h +++ b/arch/arm/include/asm/cache.h @@ -4,7 +4,7 @@ #ifndef __ASMARM_CACHE_H #define __ASMARM_CACHE_H -#define L1_CACHE_SHIFT 5 +#define L1_CACHE_SHIFT CONFIG_ARM_L1_CACHE_SHIFT #define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) /* diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig index 83c025e..3c37d4c 100644 --- a/arch/arm/mm/Kconfig +++ b/arch/arm/mm/Kconfig @@ -771,3 +771,8 @@ config CACHE_XSC3L2 select OUTER_CACHE help This option enables the L2 cache on XScale3. + +config ARM_L1_CACHE_SHIFT + int + default 6 if ARCH_OMAP3 + default 5 -- 1.6.4.2 -- 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/