[PATCH] arm: add kernel/fork.c function definitions

[Ben Dooks <ben.dooks@codethink.co.uk>]

Add the definitions of arch_release_task_struct,
arch_task_cache_init and arch_dup_task_struct which
are used in kernel/fork.c but defined in various
architecture's <asm/thread_info.h>.

Fixes the following warnings:

kernel/fork.c:160:13: warning: symbol 'arch_release_task_struct' was not declared. Should it be static?
kernel/fork.c:752:20: warning: symbol 'arch_task_cache_init' was not declared. Should it be static?
kernel/fork.c:841:12: warning: symbol 'arch_dup_task_struct' was not declared. Should it be static?

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
---
Cc: Russell King <linux@armlinux.org.uk>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 arch/arm/include/asm/thread_info.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm/include/asm/thread_info.h b/arch/arm/include/asm/thread_info.h
index 0d0d5178e2c3..3d65d152dd19 100644
--- a/arch/arm/include/asm/thread_info.h
+++ b/arch/arm/include/asm/thread_info.h
@@ -118,6 +118,11 @@ extern void iwmmxt_task_switch(struct thread_info *);
 extern void vfp_sync_hwstate(struct thread_info *);
 extern void vfp_flush_hwstate(struct thread_info *);
 
+/* for kernel/fork.c */
+extern void arch_release_task_struct(struct task_struct *tsk);
+extern void arch_task_cache_init(void);
+extern int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src);
+
 struct user_vfp;
 struct user_vfp_exc;
 
-- 
2.23.0