From: Cyrill Gorcunov <gorcunov@gmail.com>
To: mingo@elte.hu, hpa@zytor.com, heukelum@fastmail.fm
Cc: linux-kernel@vger.kernel.org, Cyrill Gorcunov <gorcunov@openvz.org>
Subject: [RFC 1/6] x86: asm linkage - introduce GLOBAL macro
Date: Sat, 14 Feb 2009 00:50:18 +0300 [thread overview]
Message-ID: <20090213215404.146776098@gmail.com> (raw)
In-Reply-To: 20090213215017.959278111@gmail.com
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If the code is time critical and this entry is called
from other places we use ENTRY to have it globally defined
and especially aligned.
Contrary we have some snippets which are size
critical. So we use plane ".globl name; name:"
directive. Introduce GLOBAL macro for this.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
---
arch/x86/include/asm/linkage.h | 4 ++++
1 file changed, 4 insertions(+)
Index: linux-2.6.git/arch/x86/include/asm/linkage.h
===================================================================
--- linux-2.6.git.orig/arch/x86/include/asm/linkage.h
+++ linux-2.6.git/arch/x86/include/asm/linkage.h
@@ -52,6 +52,10 @@
#endif
+#define GLOBAL(name) \
+ .globl name; \
+ name:
+
#ifdef CONFIG_X86_ALIGNMENT_16
#define __ALIGN .align 16,0x90
#define __ALIGN_STR ".align 16,0x90"
next prev parent reply other threads:[~2009-02-13 21:56 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-13 21:50 [RFC 0/6] x86 tip asm ENTRY,ENDPROC cleanup Cyrill Gorcunov
2009-02-13 21:50 ` Cyrill Gorcunov [this message]
2009-02-13 21:50 ` [RFC 2/6] x86: linkage - get rid of _X86 macros Cyrill Gorcunov
2009-02-13 21:50 ` [RFC 3/6] x86: copy.S - use GLOBAL,ENDPROC macros Cyrill Gorcunov
2009-02-13 21:50 ` [RFC 4/6] x86: pmjump " Cyrill Gorcunov
2009-02-13 21:50 ` [RFC 5/6] x86: compressed head_64 - use ENTRY,ENDPROC macros Cyrill Gorcunov
2009-02-13 21:50 ` [RFC 6/6] x86: compressed head_32 " Cyrill Gorcunov
2009-02-13 23:23 ` [RFC 0/6] x86 tip asm ENTRY,ENDPROC cleanup Alexander van Heukelum
2009-02-14 0:34 ` H. Peter Anvin
2009-02-14 8:21 ` Cyrill Gorcunov
2009-02-14 11:42 ` Alexander van Heukelum
2009-02-14 20:02 ` H. Peter Anvin
2009-02-19 16:13 ` Ingo Molnar
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