[PATCH v12 03/13] mm: Introduce VM_WARN_ON_PAGE macro
From: Muchun Song <hidden>
Date: 2021-01-06 14:21:40
Also in:
linux-fsdevel, linux-mm, lkml
Subsystem:
memory management - core, the rest · Maintainers:
Andrew Morton, David Hildenbrand, Linus Torvalds
Very similar to VM_WARN_ON_ONCE_PAGE and VM_BUG_ON_PAGE, add VM_WARN_ON_PAGE macro. Signed-off-by: Muchun Song <redacted> --- include/linux/mmdebug.h | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/include/linux/mmdebug.h b/include/linux/mmdebug.h
index 5d0767cb424a..eff5b13a6945 100644
--- a/include/linux/mmdebug.h
+++ b/include/linux/mmdebug.h@@ -37,6 +37,13 @@ void dump_mm(const struct mm_struct *mm); BUG(); \ } \ } while (0) +#define VM_WARN_ON_PAGE(cond, page) \ + do { \ + if (unlikely(cond)) { \ + dump_page(page, "VM_WARN_ON_PAGE(" __stringify(cond)")");\ + WARN_ON(1); \ + } \ + } while (0) #define VM_WARN_ON_ONCE_PAGE(cond, page) ({ \ static bool __section(".data.once") __warned; \ int __ret_warn_once = !!(cond); \
@@ -60,6 +67,7 @@ void dump_mm(const struct mm_struct *mm); #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_PAGE(cond, page) BUILD_BUG_ON_INVALID(cond) #define VM_WARN_ON_ONCE_PAGE(cond, page) 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)
--
2.11.0