[deliverable/linux.git] / include / linux / mmdebug.h

#ifndef LINUX_MM_DEBUG_H
#define LINUX_MM_DEBUG_H 1

struct page;

extern void dump_page(struct page *page, const char *reason);
extern void dump_page_badflags(struct page *page, const char *reason,
			       unsigned long badflags);

#ifdef CONFIG_DEBUG_VM
#define VM_BUG_ON(cond) BUG_ON(cond)
#define VM_BUG_ON_PAGE(cond, page) \
	do { if (unlikely(cond)) { dump_page(page, NULL); BUG(); } } while (0)
#else
#define VM_BUG_ON(cond) BUILD_BUG_ON_INVALID(cond)
#define VM_BUG_ON_PAGE(cond, page) VM_BUG_ON(cond)
#endif

#ifdef CONFIG_DEBUG_VIRTUAL
#define VIRTUAL_BUG_ON(cond) BUG_ON(cond)
#else
#define VIRTUAL_BUG_ON(cond) do { } while (0)
#endif

#endif
Commit	Line	Data
59ea7463 JS	1	#ifndef LINUX_MM_DEBUG_H
	2	#define LINUX_MM_DEBUG_H 1
	3
309381fe SL	4	struct page;
309381fe SL	5
d230dec1 KS	6	extern void dump_page(struct page page, const char reason);
d230dec1 KS	7	extern void dump_page_badflags(struct page page, const char reason,
309381fe SL	8	unsigned long badflags);
309381fe SL	9
59ea7463 JS	10	#ifdef CONFIG_DEBUG_VM
59ea7463 JS	11	#define VM_BUG_ON(cond) BUG_ON(cond)
309381fe SL	12	#define VM_BUG_ON_PAGE(cond, page) \
309381fe SL	13	do { if (unlikely(cond)) { dump_page(page, NULL); BUG(); } } while (0)
59ea7463	14	#else
02602a18	15	#define VM_BUG_ON(cond) BUILD_BUG_ON_INVALID(cond)
309381fe	16	#define VM_BUG_ON_PAGE(cond, page) VM_BUG_ON(cond)
59ea7463 JS	17	#endif
	18
	19	#ifdef CONFIG_DEBUG_VIRTUAL
	20	#define VIRTUAL_BUG_ON(cond) BUG_ON(cond)
	21	#else
7aa413de	22	#define VIRTUAL_BUG_ON(cond) do { } while (0)
59ea7463 JS	23	#endif
	24
	25	#endif