[PATCH 3/4] bug: completely remove code of disabled BUG_ON()

From: Konstantin Khlebnikov
Date: Wed Apr 25 2012 - 07:26:37 EST


Even if CONFIG_BUG=n gcc generates code for some BUG_ON()

bloat-o-meter: add/remove: 2/9 grow/shrink: 25/229 up/down: 1053/-5019 (-3966)

Signed-off-by: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxx>
---
include/asm-generic/bug.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/asm-generic/bug.h b/include/asm-generic/bug.h
index 2520a6e..aadb6fc 100644
--- a/include/asm-generic/bug.h
+++ b/include/asm-generic/bug.h
@@ -112,7 +112,7 @@ extern void warn_slowpath_null(const char *file, const int line);
#endif

#ifndef HAVE_ARCH_BUG_ON
-#define BUG_ON(condition) do { if (condition) ; } while(0)
+#define BUG_ON(condition) unused_expression(condition)
#endif

#ifndef HAVE_ARCH_WARN_ON

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