linux-kernel - [PATCH 2/6] x86: add arch_compat_syscall

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Date:	Tue, 2 Feb 2010 16:21:42 -0500
From:	Jason Baron <jbaron@...hat.com>
To:	linux-kernel@...r.kernel.org, laijs@...fujitsu.com,
	lizf@...fujitsu.com, rostedt@...dmis.org, fweisbec@...il.com,
	mingo@...e.hu, hpa@...or.com, tglx@...utronix.de,
	mhiramat@...hat.com
Subject: [PATCH 2/6] x86: add arch_compat_syscall_addr()

Add arch_compat_syscall_addr(int nr) for x86. This is in preparation for adding
compat syscall support to the event tracer.

Signed-off-by: Jason Baron <jbaron@...hat.com>
---
 arch/x86/kernel/ftrace.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c
index 3096892..da2568c 100644
--- a/arch/x86/kernel/ftrace.c
+++ b/arch/x86/kernel/ftrace.c
@@ -488,9 +488,18 @@ void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr,
 #ifdef CONFIG_FTRACE_SYSCALLS
 
 extern unsigned long *sys_call_table;
+extern unsigned long *ia32_sys_call_table;
 
 unsigned long __init arch_syscall_addr(int nr)
 {
 	return (unsigned long)(&sys_call_table)[nr];
 }
+
+#ifdef CONFIG_COMPAT
+unsigned long __init arch_compat_syscall_addr(int nr)
+{
+	return (unsigned long)(&ia32_sys_call_table)[nr];
+}
+#endif
+
 #endif
-- 
1.6.5.1

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