From: Konstantin Khlebnikov <khlebnikov@openvz.org>
To: Linus Torvalds <torvalds@linux-foundation.org>,
linux-kernel@vger.kernel.org
Cc: linux-arch@vger.kernel.org, Andrew Morton <akpm@linux-foundation.org>
Subject: [PATCH 2/4] bug: completely remove code of disabled VM_BUG_ON()
Date: Wed, 25 Apr 2012 15:26:29 +0400 [thread overview]
Message-ID: <20120425112629.26927.21609.stgit@zurg> (raw)
In-Reply-To: <20120425112623.26927.43229.stgit@zurg>
Even if CONFIG_DEBUG_VM=n gcc genereates code for some VM_BUG_ON()
bloat-o-meter: add/remove: 0/1 grow/shrink: 10/120 up/down: 185/-1889 (-1704)
Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
---
include/linux/mmdebug.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/mmdebug.h b/include/linux/mmdebug.h
index c04ecfe..9c9a2a0 100644
--- a/include/linux/mmdebug.h
+++ b/include/linux/mmdebug.h
@@ -4,7 +4,7 @@
#ifdef CONFIG_DEBUG_VM
#define VM_BUG_ON(cond) BUG_ON(cond)
#else
-#define VM_BUG_ON(cond) do { (void)(cond); } while (0)
+#define VM_BUG_ON(cond) unused_expression(cond)
#endif
#ifdef CONFIG_DEBUG_VIRTUAL
next prev parent reply other threads:[~2012-04-25 11:26 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-25 11:26 [PATCH 1/4] compiler.h: introduce unused_expression() macro Konstantin Khlebnikov
2012-04-25 11:26 ` Konstantin Khlebnikov [this message]
2012-04-25 14:40 ` [PATCH 2/4] bug: completely remove code of disabled VM_BUG_ON() Geert Uytterhoeven
2012-04-26 22:32 ` Andrew Morton
2012-04-27 5:17 ` Geert Uytterhoeven
2012-04-27 7:07 ` Andrew Morton
2012-04-25 11:26 ` [PATCH 3/4] bug: completely remove code of disabled BUG_ON() Konstantin Khlebnikov
2012-04-25 11:26 ` Konstantin Khlebnikov
2012-04-25 11:26 ` [PATCH 4/4] bug: mark disabled BUG() as unreachable() code Konstantin Khlebnikov
2012-04-25 11:26 ` Konstantin Khlebnikov
2012-04-28 5:10 ` Konstantin Khlebnikov
2012-04-28 5:21 ` Linus Torvalds
2012-04-28 5:21 ` Linus Torvalds
2012-04-28 6:14 ` Andrew Morton
2012-04-25 11:51 ` [PATCH 1/4] compiler.h: introduce unused_expression() macro Cong Wang
2012-04-25 11:54 ` Konstantin Khlebnikov
2012-04-25 11:54 ` Konstantin Khlebnikov
2012-04-26 22:29 ` Andrew Morton
2012-04-27 9:55 ` Konstantin Khlebnikov
2012-04-27 21:53 ` Andrew Morton
2012-04-26 22:34 ` Andrew Morton
2012-04-26 22:34 ` Andrew Morton
2012-04-27 7:54 ` Konstantin Khlebnikov
2012-04-27 8:16 ` H. Peter Anvin
2012-04-28 3:50 ` Konstantin Khlebnikov
2012-04-28 3:50 ` Konstantin Khlebnikov
2012-04-28 7:06 ` [PATCH v2 1/2] bug: introduce BUILD_BUG_ON_INVALID() macro Konstantin Khlebnikov
2012-04-28 7:06 ` Konstantin Khlebnikov
2012-04-28 7:06 ` [PATCH v2 2/2] bug: completely remove code of disabled VM_BUG_ON() Konstantin Khlebnikov
2012-04-28 7:06 ` Konstantin Khlebnikov
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