linux/arch/arm64/include/asm/ptdump.h
Mark Rutland 4674fdb9f1 arm64: mm: dump: make page table dumping reusable
For debugging purposes, it would be nice if we could export page tables
other than the swapper_pg_dir to userspace. To enable this, this patch
refactors the arm64 page table dumping code such that multiple tables
may be registered with the framework, and exported under debugfs.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Laura Abbott <labbott@fedoraproject.org>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2016-06-21 15:09:11 +01:00

45 lines
1.1 KiB
C

/*
* Copyright (C) 2014 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_PTDUMP_H
#define __ASM_PTDUMP_H
#ifdef CONFIG_ARM64_PTDUMP
#include <linux/mm_types.h>
struct addr_marker {
unsigned long start_address;
char *name;
};
struct ptdump_info {
struct mm_struct *mm;
const struct addr_marker *markers;
unsigned long base_addr;
unsigned long max_addr;
};
int ptdump_register(struct ptdump_info *info, const char *name);
#else
static inline int ptdump_register(struct ptdump_info *info, const char *name)
{
return 0;
}
#endif /* CONFIG_ARM64_PTDUMP */
#endif /* __ASM_PTDUMP_H */