mm: introduce VM_BUG_ON_VMA

Very similar to VM_BUG_ON_PAGE but dumps VMA information instead. Signed-off-by: Sasha Levin <[email protected]> Reviewed-by: Naoya Horiguchi <[email protected]> Cc: Kirill A. Shutemov <[email protected]> Cc: Konstantin Khlebnikov <[email protected]> Cc: Rik van Riel <[email protected]> Cc: Mel Gorman <[email protected]> Cc: Michal Hocko <[email protected]> Cc: Hugh Dickins <[email protected]> Cc: Vlastimil Babka <[email protected]> Cc: Michel Lespinasse <[email protected]> Cc: Minchan Kim <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
marineam · Oct 10, 2014 · fa3759c · fa3759c
1 parent 0bf5513
commit fa3759c
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/include/linux/mmdebug.h b/include/linux/mmdebug.h
@@ -20,12 +20,20 @@ void dump_vma(const struct vm_area_struct *vma);
 			BUG();						\
 		}							\
 	} while (0)
+#define VM_BUG_ON_VMA(cond, vma)					\
+	do {								\
+		if (unlikely(cond)) {					\
+			dump_vma(vma);					\
+			BUG();						\
+		}							\
+	} while (0)
 #define VM_WARN_ON(cond) WARN_ON(cond)
 #define VM_WARN_ON_ONCE(cond) WARN_ON_ONCE(cond)
 #define VM_WARN_ONCE(cond, format...) WARN_ONCE(cond, format)
 #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_VMA(cond, vma) 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_ONCE(cond, format...) BUILD_BUG_ON_INVALID(cond)