arch/arm64/include/asm/ptdump.h

   1 /*
   2  * Copyright (C) 2014 ARM Ltd.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15  */
  16 #ifndef __ASM_PTDUMP_H
  17 #define __ASM_PTDUMP_H
  18
  19 #ifdef CONFIG_ARM64_PTDUMP_CORE
  20
  21 #include <linux/mm_types.h>
  22 #include <linux/seq_file.h>
  23
  24 struct addr_marker {
  25         unsigned long start_address;
  26         char *name;
  27 };
  28
  29 struct ptdump_info {
  30         struct mm_struct                *mm;
  31         const struct addr_marker        *markers;
  32         unsigned long                   base_addr;
  33 };
  34
  35 void ptdump_walk_pgd(struct seq_file *s, struct ptdump_info *info);
  36 #ifdef CONFIG_ARM64_PTDUMP_DEBUGFS
  37 int ptdump_debugfs_register(struct ptdump_info *info, const char *name);
  38 #else
  39 static inline int ptdump_debugfs_register(struct ptdump_info *info,
  40                                         const char *name)
  41 {
  42         return 0;
  43 }
  44 #endif
  45 void ptdump_check_wx(void);
  46 #endif /* CONFIG_ARM64_PTDUMP_CORE */
  47
  48 #ifdef CONFIG_DEBUG_WX
  49 #define debug_checkwx() ptdump_check_wx()
  50 #else
  51 #define debug_checkwx() do { } while (0)
  52 #endif
  53
  54 #endif /* __ASM_PTDUMP_H */