s390: 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/s390/include/asm/thread_info.h

@@ -34,7 +34,6 @@
  */
 struct thread_info {
 	struct task_struct	*task;		/* main task structure */
-	struct exec_domain	*exec_domain;	/* execution domain */
 	unsigned long		flags;		/* low level flags */
 	unsigned long		sys_call_table;	/* System call table address */
 	unsigned int		cpu;		/* current CPU */
@@ -51,7 +50,6 @@ struct thread_info {
 #define INIT_THREAD_INFO(tsk)			\
 {						\
 	.task		= &tsk,			\
-	.exec_domain	= &default_exec_domain,	\
 	.flags		= 0,			\
 	.cpu		= 0,			\
 	.preempt_count	= INIT_PREEMPT_COUNT,	\

arch/s390/kernel/asm-offsets.c

@@ -34,7 +34,6 @@ int main(void)
 	DEFINE(__THREAD_per_paid, offsetof(struct task_struct, thread.per_event.paid));
 	BLANK();
 	DEFINE(__TI_task, offsetof(struct thread_info, task));
-	DEFINE(__TI_domain, offsetof(struct thread_info, exec_domain));
 	DEFINE(__TI_flags, offsetof(struct thread_info, flags));
 	DEFINE(__TI_sysc_table, offsetof(struct thread_info, sys_call_table));
 	DEFINE(__TI_cpu, offsetof(struct thread_info, cpu));

arch/s390/kernel/compat_signal.c

@@ -370,16 +370,6 @@ get_sigframe(struct k_sigaction *ka, struct pt_regs * regs, size_t frame_size)
 	return (void __user *)((sp - frame_size) & -8ul);
 }
 
-static inline int map_signal(int sig)
-{
-	if (current_thread_info()->exec_domain
-	    && current_thread_info()->exec_domain->signal_invmap
-	    && sig < 32)
-		return current_thread_info()->exec_domain->signal_invmap[sig];
-        else
-		return sig;
-}
-
 static int setup_frame32(struct ksignal *ksig, sigset_t *set,
 			 struct pt_regs *regs)
 {
@@ -449,7 +439,7 @@ static int setup_frame32(struct ksignal *ksig, sigset_t *set,
 		(regs->psw.mask & ~PSW_MASK_ASC);
 	regs->psw.addr = (__force __u64) ksig->ka.sa.sa_handler;
 
-	regs->gprs[2] = map_signal(sig);
+	regs->gprs[2] = sig;
 	regs->gprs[3] = (__force __u64) &frame->sc;
 
 	/* We forgot to include these in the sigcontext.
@@ -532,7 +522,7 @@ static int setup_rt_frame32(struct ksignal *ksig, sigset_t *set,
 		(regs->psw.mask & ~PSW_MASK_ASC);
 	regs->psw.addr = (__u64 __force) ksig->ka.sa.sa_handler;
 
-	regs->gprs[2] = map_signal(ksig->sig);
+	regs->gprs[2] = ksig->sig;
 	regs->gprs[3] = (__force __u64) &frame->info;
 	regs->gprs[4] = (__force __u64) &frame->uc;
 	regs->gprs[5] = task_thread_info(current)->last_break;

arch/s390/kernel/signal.c

@@ -309,16 +309,6 @@ get_sigframe(struct k_sigaction *ka, struct pt_regs * regs, size_t frame_size)
 	return (void __user *)((sp - frame_size) & -8ul);
 }
 
-static inline int map_signal(int sig)
-{
-	if (current_thread_info()->exec_domain
-	    && current_thread_info()->exec_domain->signal_invmap
-	    && sig < 32)
-		return current_thread_info()->exec_domain->signal_invmap[sig];
-	else
-		return sig;
-}
-
 static int setup_frame(int sig, struct k_sigaction *ka,
 		       sigset_t *set, struct pt_regs * regs)
 {
@@ -386,7 +376,7 @@ static int setup_frame(int sig, struct k_sigaction *ka,
 		(regs->psw.mask & ~PSW_MASK_ASC);
 	regs->psw.addr = (unsigned long) ka->sa.sa_handler | PSW_ADDR_AMODE;
 
-	regs->gprs[2] = map_signal(sig);
+	regs->gprs[2] = sig;
 	regs->gprs[3] = (unsigned long) &frame->sc;
 
 	/* We forgot to include these in the sigcontext.
@@ -468,7 +458,7 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
 		(regs->psw.mask & ~PSW_MASK_ASC);
 	regs->psw.addr = (unsigned long) ksig->ka.sa.sa_handler | PSW_ADDR_AMODE;
 
-	regs->gprs[2] = map_signal(ksig->sig);
+	regs->gprs[2] = ksig->sig;
 	regs->gprs[3] = (unsigned long) &frame->info;
 	regs->gprs[4] = (unsigned long) &frame->uc;
 	regs->gprs[5] = task_thread_info(current)->last_break;