From: Alexey Zaytsev <alexey.zaytsev@gmail.com>
To: linux-kernel@vger.kernel.org
Cc: Ingo Molnar <mingo@elte.hu>, Steven Rostedt <rostedt@goodmis.org>
Subject: [PATCH] Disable branch profiling macros when sparsed.
Date: Sat, 10 Jan 2009 08:57:28 +0300 [thread overview]
Message-ID: <20090110052727.5471.3654.stgit@zaytsev.su> (raw)
The macros produce lots of unneeded warnings when
recursive if(({ .. if() {..} ..})) {..} and such
are substituted. And there is no point in sparsing
them anyway. This is useful if someone decides to
sparse an allyesconfig kernel.
Signed-off-by: Alexey Zaytsev <alexey.zaytsev@gmail.com>
---
Also, there is little point in profiling unlikely() inside
WARN_ON() and friends, so maybe they should be replaced
with the _notrace counterparts?
include/linux/compiler.h | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/include/linux/compiler.h b/include/linux/compiler.h
index d95da10..f5f173b 100644
--- a/include/linux/compiler.h
+++ b/include/linux/compiler.h
@@ -17,6 +17,7 @@
# define __cond_lock(x,c) ((c) ? ({ __acquire(x); 1; }) : 0)
extern void __chk_user_ptr(const volatile void __user *);
extern void __chk_io_ptr(const volatile void __iomem *);
+# define DISABLE_BRANCH_PROFILING
#else
# define __user
# define __kernel
next reply other threads:[~2009-01-10 5:48 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-10 5:57 Alexey Zaytsev [this message]
2009-01-10 6:13 ` David Miller
2009-01-10 7:18 ` Harvey Harrison
2009-01-10 9:35 ` Alexey Zaytsev
2009-01-10 21:33 ` Harvey Harrison
2009-01-10 23:04 ` Steven Rostedt
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