mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-20 12:17:31 +07:00
b6531456ba
Some headers rely on PAGE_* definitions from <asm/page.h>, but cannot include this due to potential circular includes. For example, a number of definitions in <asm/memory.h> rely on PAGE_SHIFT, and <asm/page.h> includes <asm/memory.h>. This requires users of these definitions to include both headers, which is fragile and error-prone. This patch ameliorates matters by moving the basic definitions out to a new header, <asm/page-def.h>. Both <asm/page.h> and <asm/memory.h> are updated to include this, avoiding this fragility, and avoiding the possibility of circular include dependencies. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Tested-by: Laura Abbott <labbott@redhat.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: James Morse <james.morse@arm.com>
35 lines
1.2 KiB
C
35 lines
1.2 KiB
C
/*
|
|
* Based on arch/arm/include/asm/page.h
|
|
*
|
|
* Copyright (C) 1995-2003 Russell King
|
|
* Copyright (C) 2017 ARM Ltd.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#ifndef __ASM_PAGE_DEF_H
|
|
#define __ASM_PAGE_DEF_H
|
|
|
|
#include <linux/const.h>
|
|
|
|
/* PAGE_SHIFT determines the page size */
|
|
/* CONT_SHIFT determines the number of pages which can be tracked together */
|
|
#define PAGE_SHIFT CONFIG_ARM64_PAGE_SHIFT
|
|
#define CONT_SHIFT CONFIG_ARM64_CONT_SHIFT
|
|
#define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT)
|
|
#define PAGE_MASK (~(PAGE_SIZE-1))
|
|
|
|
#define CONT_SIZE (_AC(1, UL) << (CONT_SHIFT + PAGE_SHIFT))
|
|
#define CONT_MASK (~(CONT_SIZE-1))
|
|
|
|
#endif /* __ASM_PAGE_DEF_H */
|