From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f45.google.com (mail-pa0-f45.google.com [209.85.220.45]) by kanga.kvack.org (Postfix) with ESMTP id C0D266B0071 for ; Fri, 30 Jan 2015 09:43:40 -0500 (EST) Received: by mail-pa0-f45.google.com with SMTP id et14so53121873pad.4 for ; Fri, 30 Jan 2015 06:43:40 -0800 (PST) Received: from mga01.intel.com (mga01.intel.com. [192.55.52.88]) by mx.google.com with ESMTP id sm10si13821105pab.239.2015.01.30.06.43.38 for ; Fri, 30 Jan 2015 06:43:38 -0800 (PST) From: "Kirill A. Shutemov" Subject: [PATCH 07/19] m68k: mark PMD folded and expose number of page table levels Date: Fri, 30 Jan 2015 16:43:16 +0200 Message-Id: <1422629008-13689-8-git-send-email-kirill.shutemov@linux.intel.com> In-Reply-To: <1422629008-13689-1-git-send-email-kirill.shutemov@linux.intel.com> References: <1422629008-13689-1-git-send-email-kirill.shutemov@linux.intel.com> Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Guenter Roeck , "Kirill A. Shutemov" , Geert Uytterhoeven We would want to use number of page table level to define mm_struct. Let's expose it as CONFIG_PGTABLE_LEVELS. Core mm expects __PAGETABLE_{PUD,PMD}_FOLDED to be defined if these page table levels folded. Signed-off-by: Kirill A. Shutemov Cc: Geert Uytterhoeven --- arch/m68k/Kconfig | 4 ++++ arch/m68k/include/asm/pgtable_mm.h | 2 ++ 2 files changed, 6 insertions(+) diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig index 87b7c7581b1d..2dd8f63bfbbb 100644 --- a/arch/m68k/Kconfig +++ b/arch/m68k/Kconfig @@ -67,6 +67,10 @@ config HZ default 1000 if CLEOPATRA default 100 +config PGTABLE_LEVELS + default 2 if SUN3 || COLDFIRE + default 3 + source "init/Kconfig" source "kernel/Kconfig.freezer" diff --git a/arch/m68k/include/asm/pgtable_mm.h b/arch/m68k/include/asm/pgtable_mm.h index 28a145bfbb71..35ed4a9981ae 100644 --- a/arch/m68k/include/asm/pgtable_mm.h +++ b/arch/m68k/include/asm/pgtable_mm.h @@ -54,10 +54,12 @@ */ #ifdef CONFIG_SUN3 #define PTRS_PER_PTE 16 +#define __PAGETABLE_PMD_FOLDED #define PTRS_PER_PMD 1 #define PTRS_PER_PGD 2048 #elif defined(CONFIG_COLDFIRE) #define PTRS_PER_PTE 512 +#define __PAGETABLE_PMD_FOLDED #define PTRS_PER_PMD 1 #define PTRS_PER_PGD 1024 #else -- 2.1.4 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org