linux-kernel - linux-next: build failure after merge of the final tree (Linus' tree related)

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Date:	Fri, 30 Mar 2012 14:31:56 +1100
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	David Howells <dhowells@...hat.com>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Linus <torvalds@...ux-foundation.org>,
	"David S. Miller" <davem@...emloft.net>
Subject: linux-next: build failure after merge of the final tree (Linus'
 tree related)

Hi all,

After merging the final tree, today's linux-next build (sparc64 defconfig)
failed like this:

kernel/signal.c: In function 'ptrace_stop':
kernel/signal.c:1860:3: error: implicit declaration of function 'synchronize_user_stack' [-Werror=implicit-function-declaration]

Presumably caused by commit d550bbd40c0e ("Disintegrate asm/system.h for
Sparc").

I added this patch for today:

From: Stephen Rothwell <sfr@...b.auug.org.au>
Date: Fri, 30 Mar 2012 14:26:24 +1100
Subject: [PATCH] sparc: fix fallout from system.h split

Fixes this build error:

kernel/signal.c: In function 'ptrace_stop':
kernel/signal.c:1860:3: error: implicit declaration of function 'synchronize_user_stack' [-Werror=implicit-function-declaration]

Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au>
---
 arch/sparc/include/asm/ptrace.h |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/sparc/include/asm/ptrace.h b/arch/sparc/include/asm/ptrace.h
index ef8c7c0..8112096 100644
--- a/arch/sparc/include/asm/ptrace.h
+++ b/arch/sparc/include/asm/ptrace.h
@@ -165,6 +165,7 @@ struct sparc_stackf {
 #ifdef __KERNEL__
 
 #include <linux/threads.h>
+#include <asm/switch_to.h>
 
 static inline int pt_regs_trap_type(struct pt_regs *regs)
 {
@@ -241,6 +242,8 @@ extern unsigned long profile_pc(struct pt_regs *);
 
 #ifdef __KERNEL__
 
+#include <asm/switch_to.h>
+
 static inline bool pt_regs_is_syscall(struct pt_regs *regs)
 {
 	return (regs->psr & PSR_SYSCALL);
-- 
1.7.9.5

-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au

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