linux-kernel - [PATCH 2/3] arch/tile: Implement user_stack

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Message-Id: <1356153672-17545-2-git-send-email-simon.marchi@polymtl.ca>
Date:	Sat, 22 Dec 2012 00:21:11 -0500
From:	Simon Marchi <simon.marchi@...ymtl.ca>
To:	cmetcalf@...era.com
Cc:	linux-kernel@...r.kernel.org,
	Simon Marchi <simon.marchi@...ymtl.ca>
Subject: [PATCH 2/3] arch/tile: Implement user_stack_pointer

It is needed when we turn on HAVE_ARCH_TRACEHOOK.

Signed-off-by: Simon Marchi <simon.marchi@...ymtl.ca>
---
 arch/tile/include/asm/ptrace.h |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/arch/tile/include/asm/ptrace.h b/arch/tile/include/asm/ptrace.h
index 5ce052e..4be42fb 100644
--- a/arch/tile/include/asm/ptrace.h
+++ b/arch/tile/include/asm/ptrace.h
@@ -80,6 +80,11 @@ struct task_struct;
 extern void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs,
 			 int error_code);
 
+static inline unsigned long user_stack_pointer(struct pt_regs *regs)
+{
+	return regs->sp;
+}
+
 #ifdef __tilegx__
 /* We need this since sigval_t has a user pointer in it, for GETSIGINFO etc. */
 #define __ARCH_WANT_COMPAT_SYS_PTRACE
-- 
1.7.1

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