linux-kernel - [RFC][PATCH -tip 4/9] power: add kernel_trap

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Date:	Thu, 19 Mar 2009 17:10:23 -0400
From:	Masami Hiramatsu <mhiramat@...hat.com>
To:	Ingo Molnar <mingo@...e.hu>, linuxppc-dev@...abs.org
CC:	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	LKML <linux-kernel@...r.kernel.org>,
	systemtap-ml <systemtap@...rces.redhat.com>,
	Steven Rostedt <rostedt@...dmis.org>
Subject: [RFC][PATCH -tip 4/9] power: add kernel_trap_sp()

Add kernel_trap_sp() on powerpc, based on systemtap's runtime/regs.h.

Signed-off-by: Masami Hiramatsu <mhiramat@...hat.com>
---
 arch/powerpc/include/asm/ptrace.h |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/arch/powerpc/include/asm/ptrace.h b/arch/powerpc/include/asm/ptrace.h
index c9c678f..0ac366c 100644
--- a/arch/powerpc/include/asm/ptrace.h
+++ b/arch/powerpc/include/asm/ptrace.h
@@ -83,6 +83,7 @@ struct pt_regs {

 #define instruction_pointer(regs) ((regs)->nip)
 #define user_stack_pointer(regs) ((regs)->gpr[1])
+#define kernel_trap_sp(regs) (user_stack_pointer(regs))
 #define regs_return_value(regs) ((regs)->gpr[3])

 #ifdef CONFIG_SMP
-- 
Masami Hiramatsu

Software Engineer
Hitachi Computer Products (America) Inc.
Software Solutions Division

e-mail: mhiramat@...hat.com


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