Commit 9e9edb20 authored by Matthew Wilcox (Oracle)'s avatar Matthew Wilcox (Oracle)
Browse files

mm/debug: Add VM_BUG_ON_FOLIO() and VM_WARN_ON_ONCE_FOLIO() 



These are the folio equivalents of VM_BUG_ON_PAGE and
VM_WARN_ON_ONCE_PAGE.  No change to generated code.

Signed-off-by: default avatarMatthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: default avatarZi Yan <ziy@nvidia.com>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Acked-by: default avatarJeff Layton <jlayton@kernel.org>
Acked-by: default avatarKirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: default avatarVlastimil Babka <vbabka@suse.cz>
Reviewed-by: default avatarWilliam Kucharski <william.kucharski@oracle.com>
Reviewed-by: default avatarDavid Howells <dhowells@redhat.com>
Acked-by: default avatarMike Rapoport <rppt@linux.ibm.com>
parent a53e17e4

include/linux/mmdebug.h

+20 −0
Original line number Diff line number Diff line
@@ -22,6 +22,13 @@ void dump_mm(const struct mm_struct *mm); 
			BUG();						\

		}							\

	} while (0)

#define VM_BUG_ON_FOLIO(cond, folio)					\

	do {								\

		if (unlikely(cond)) {					\

			dump_page(&folio->page, "VM_BUG_ON_FOLIO(" __stringify(cond)")");\

			BUG();						\

		}							\

	} while (0)

#define VM_BUG_ON_VMA(cond, vma)					\

	do {								\

		if (unlikely(cond)) {					\
@@ -47,6 +54,17 @@ void dump_mm(const struct mm_struct *mm); 
	}								\

	unlikely(__ret_warn_once);					\

})

#define VM_WARN_ON_ONCE_FOLIO(cond, folio)	({			\

	static bool __section(".data.once") __warned;			\

	int __ret_warn_once = !!(cond);					\

									\

	if (unlikely(__ret_warn_once && !__warned)) {			\

		dump_page(&folio->page, "VM_WARN_ON_ONCE_FOLIO(" __stringify(cond)")");\

		__warned = true;					\

		WARN_ON(1);						\

	}								\

	unlikely(__ret_warn_once);					\

})



#define VM_WARN_ON(cond) (void)WARN_ON(cond)

#define VM_WARN_ON_ONCE(cond) (void)WARN_ON_ONCE(cond)
@@ -55,11 +73,13 @@ void dump_mm(const struct mm_struct *mm); 
#else

#define VM_BUG_ON(cond) BUILD_BUG_ON_INVALID(cond)

#define VM_BUG_ON_PAGE(cond, page) VM_BUG_ON(cond)

#define VM_BUG_ON_FOLIO(cond, folio) VM_BUG_ON(cond)

#define VM_BUG_ON_VMA(cond, vma) VM_BUG_ON(cond)

#define VM_BUG_ON_MM(cond, mm) VM_BUG_ON(cond)

#define VM_WARN_ON(cond) BUILD_BUG_ON_INVALID(cond)

#define VM_WARN_ON_ONCE(cond) BUILD_BUG_ON_INVALID(cond)

#define VM_WARN_ON_ONCE_PAGE(cond, page)  BUILD_BUG_ON_INVALID(cond)

#define VM_WARN_ON_ONCE_FOLIO(cond, folio)  BUILD_BUG_ON_INVALID(cond)

#define VM_WARN_ONCE(cond, format...) BUILD_BUG_ON_INVALID(cond)

#define VM_WARN(cond, format...) BUILD_BUG_ON_INVALID(cond)

#endif