From e6de3ca91cd7ee252ef271c96a4c480c1f3e071e Mon Sep 17 00:00:00 2001
From: Richard Weinberger <richard@nod.at>
Date: Fri, 27 Mar 2015 09:55:52 +0100
Subject: [PATCH] arc: Remove signal translation and exec_domain

As execution domain support is gone we can remove
signal translation from the signal code and remove
exec_domain from thread_info.

Signed-off-by: Richard Weinberger <richard@nod.at>
---
 arch/arc/include/asm/thread_info.h |  2 --
 arch/arc/kernel/signal.c           | 14 +-------------
 2 files changed, 1 insertion(+), 15 deletions(-)

diff --git a/arch/arc/include/asm/thread_info.h b/arch/arc/include/asm/thread_info.h
index 1163a1838ac1..aca0d5a45c7b 100644
--- a/arch/arc/include/asm/thread_info.h
+++ b/arch/arc/include/asm/thread_info.h
@@ -43,7 +43,6 @@ struct thread_info {
 	int preempt_count;		/* 0 => preemptable, <0 => BUG */
 	struct task_struct *task;	/* main task structure */
 	mm_segment_t addr_limit;	/* thread address space */
-	struct exec_domain *exec_domain;/* execution domain */
 	__u32 cpu;			/* current CPU */
 	unsigned long thr_ptr;		/* TLS ptr */
 };
@@ -56,7 +55,6 @@ struct thread_info {
 #define INIT_THREAD_INFO(tsk)			\
 {						\
 	.task       = &tsk,			\
-	.exec_domain    = &default_exec_domain,	\
 	.flags      = 0,			\
 	.cpu        = 0,			\
 	.preempt_count  = INIT_PREEMPT_COUNT,	\
diff --git a/arch/arc/kernel/signal.c b/arch/arc/kernel/signal.c
index edda76fae83f..2251fb4bbfd7 100644
--- a/arch/arc/kernel/signal.c
+++ b/arch/arc/kernel/signal.c
@@ -171,18 +171,6 @@ static inline void __user *get_sigframe(struct ksignal *ksig,
 	return frame;
 }
 
-/*
- * translate the signal
- */
-static inline int map_sig(int sig)
-{
-	struct thread_info *thread = current_thread_info();
-	if (thread->exec_domain && thread->exec_domain->signal_invmap
-	    && sig < 32)
-		sig = thread->exec_domain->signal_invmap[sig];
-	return sig;
-}
-
 static int
 setup_rt_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs)
 {
@@ -231,7 +219,7 @@ setup_rt_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs)
 		return err;
 
 	/* #1 arg to the user Signal handler */
-	regs->r0 = map_sig(ksig->sig);
+	regs->r0 = ksig->sig;
 
 	/* setup PC of user space signal handler */
 	regs->ret = (unsigned long)ksig->ka.sa.sa_handler;