[PATCHv1, RFC 01/33] tools: Add WARN_ON_ONCE
From: Kirill A. Shutemov <hidden>
Date: 2016-07-26 00:35:03
Also in:
linux-ext4, linux-fsdevel, linux-mm, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
From: Matthew Wilcox <redacted> The radix tree uses its own buggy WARN_ON_ONCE. Replace it with the definition from asm-generic/bug.h Signed-off-by: Matthew Wilcox <redacted> Signed-off-by: Kirill A. Shutemov <redacted> --- tools/include/asm/bug.h | 11 +++++++++++ tools/testing/radix-tree/Makefile | 2 +- tools/testing/radix-tree/linux/bug.h | 2 +- 3 files changed, 13 insertions(+), 2 deletions(-)
diff --git a/tools/include/asm/bug.h b/tools/include/asm/bug.h
index 9e5f4846967f..beda1a884b50 100644
--- a/tools/include/asm/bug.h
+++ b/tools/include/asm/bug.h@@ -12,6 +12,17 @@ unlikely(__ret_warn_on); \ }) +#define WARN_ON_ONCE(condition) ({ \ + static int __warned; \ + int __ret_warn_once = !!(condition); \ + \ + if (unlikely(__ret_warn_once && !__warned)) { \ + __warned = true; \ + WARN_ON(1); \ + } \ + unlikely(__ret_warn_once); \ +}) + #define WARN_ONCE(condition, format...) ({ \ static int __warned; \ int __ret_warn_once = !!(condition); \
diff --git a/tools/testing/radix-tree/Makefile b/tools/testing/radix-tree/Makefile
index 3b530467148e..20d8bb37017a 100644
--- a/tools/testing/radix-tree/Makefile
+++ b/tools/testing/radix-tree/Makefile@@ -1,5 +1,5 @@ -CFLAGS += -I. -g -Wall -D_LGPL_SOURCE +CFLAGS += -I. -I../../include -g -Wall -D_LGPL_SOURCE LDFLAGS += -lpthread -lurcu TARGETS = main OFILES = main.o radix-tree.o linux.o test.o tag_check.o find_next_bit.o \
diff --git a/tools/testing/radix-tree/linux/bug.h b/tools/testing/radix-tree/linux/bug.h
index ccbe444977df..23b8ed52f8c8 100644
--- a/tools/testing/radix-tree/linux/bug.h
+++ b/tools/testing/radix-tree/linux/bug.h@@ -1 +1 @@ -#define WARN_ON_ONCE(x) assert(x) +#include "asm/bug.h"
--
2.8.1