include/linux/mmdebug.h

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