Merge tag 'md/4.5' of git://neil.brown.name/md
[deliverable/linux.git] / include / linux / mmdebug.h
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1#ifndef LINUX_MM_DEBUG_H
2#define LINUX_MM_DEBUG_H 1
3
1d5cda40 4#include <linux/bug.h>
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5#include <linux/stringify.h>
6
309381fe 7struct page;
0bf55139 8struct vm_area_struct;
31c9afa6 9struct mm_struct;
309381fe 10
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11extern void dump_page(struct page *page, const char *reason);
12extern void dump_page_badflags(struct page *page, const char *reason,
309381fe 13 unsigned long badflags);
0bf55139 14void dump_vma(const struct vm_area_struct *vma);
31c9afa6 15void dump_mm(const struct mm_struct *mm);
309381fe 16
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17#ifdef CONFIG_DEBUG_VM
18#define VM_BUG_ON(cond) BUG_ON(cond)
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19#define VM_BUG_ON_PAGE(cond, page) \
20 do { \
21 if (unlikely(cond)) { \
22 dump_page(page, "VM_BUG_ON_PAGE(" __stringify(cond)")");\
23 BUG(); \
24 } \
25 } while (0)
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26#define VM_BUG_ON_VMA(cond, vma) \
27 do { \
28 if (unlikely(cond)) { \
29 dump_vma(vma); \
30 BUG(); \
31 } \
32 } while (0)
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33#define VM_BUG_ON_MM(cond, mm) \
34 do { \
35 if (unlikely(cond)) { \
36 dump_mm(mm); \
37 BUG(); \
38 } \
39 } while (0)
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40#define VM_WARN_ON(cond) WARN_ON(cond)
41#define VM_WARN_ON_ONCE(cond) WARN_ON_ONCE(cond)
ef6b571f 42#define VM_WARN_ONCE(cond, format...) WARN_ONCE(cond, format)
59ea7463 43#else
02602a18 44#define VM_BUG_ON(cond) BUILD_BUG_ON_INVALID(cond)
309381fe 45#define VM_BUG_ON_PAGE(cond, page) VM_BUG_ON(cond)
fa3759cc 46#define VM_BUG_ON_VMA(cond, vma) VM_BUG_ON(cond)
31c9afa6 47#define VM_BUG_ON_MM(cond, mm) VM_BUG_ON(cond)
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48#define VM_WARN_ON(cond) BUILD_BUG_ON_INVALID(cond)
49#define VM_WARN_ON_ONCE(cond) BUILD_BUG_ON_INVALID(cond)
ef6b571f 50#define VM_WARN_ONCE(cond, format...) BUILD_BUG_ON_INVALID(cond)
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51#endif
52
53#ifdef CONFIG_DEBUG_VIRTUAL
54#define VIRTUAL_BUG_ON(cond) BUG_ON(cond)
55#else
7aa413de 56#define VIRTUAL_BUG_ON(cond) do { } while (0)
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57#endif
58
59#endif
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