Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / include / linux / mmdebug.h

diff --git a/kernel/include/linux/mmdebug.h b/kernel/include/linux/mmdebug.h
new file mode 100644 (file)
index 0000000..877ef22
--- /dev/null
+++ b/kernel/include/linux/mmdebug.h
@@ -0,0 +1,58 @@
+#ifndef LINUX_MM_DEBUG_H
+#define LINUX_MM_DEBUG_H 1
+
+#include <linux/stringify.h>
+
+struct page;
+struct vm_area_struct;
+struct mm_struct;
+
+extern void dump_page(struct page *page, const char *reason);
+extern void dump_page_badflags(struct page *page, const char *reason,
+                              unsigned long badflags);
+void dump_vma(const struct vm_area_struct *vma);
+void dump_mm(const struct mm_struct *mm);
+
+#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, "VM_BUG_ON_PAGE(" __stringify(cond)")");\
+                       BUG();                                          \
+               }                                                       \
+       } while (0)
+#define VM_BUG_ON_VMA(cond, vma)                                       \
+       do {                                                            \
+               if (unlikely(cond)) {                                   \
+                       dump_vma(vma);                                  \
+                       BUG();                                          \
+               }                                                       \
+       } while (0)
+#define VM_BUG_ON_MM(cond, mm)                                         \
+       do {                                                            \
+               if (unlikely(cond)) {                                   \
+                       dump_mm(mm);                                    \
+                       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_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_ONCE(cond, format...) BUILD_BUG_ON_INVALID(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