---

yaml
---
r: 56453
b: refs/heads/master
c: c18fe9a
h: refs/heads/master
i:
  56451: 0bff418
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 599c26d32950c33bdd2a5ac6939bfe15ecf057e0
+refs/heads/master: c18fe9a0467afaec7de05ec76cd994ae7c866760

trunk/arch/sh64/kernel/entry.S

@@ -947,14 +947,14 @@ ret_with_reschedule:
 	! FIXME:!!!
 	! no handling of TIF_SYSCALL_TRACE yet!!
 
-	movi	(1 << TIF_NEED_RESCHED), r8
+	movi	_TIF_NEED_RESCHED, r8
 	and	r8, r7, r8
 	pta	work_resched, tr0
 	bne	r8, ZERO, tr0
 
 	pta	restore_all, tr1
 
-	movi	(1 << TIF_SIGPENDING), r8
+	movi	(_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK), r8
 	and	r8, r7, r8
 	pta	work_notifysig, tr0
 	bne	r8, ZERO, tr0

trunk/arch/sh64/kernel/signal.c

@@ -698,28 +698,53 @@ int do_signal(struct pt_regs *regs, sigset_t *oldset)
 	if (try_to_freeze())
 		goto no_signal;
 
-	if (!oldset)
+	if (test_thread_flag(TIF_RESTORE_SIGMASK))
+		oldset = &current->saved_sigmask;
+	else if (!oldset)
 		oldset = &current->blocked;
 
 	signr = get_signal_to_deliver(&info, &ka, regs, 0);
 
 	if (signr > 0) {
 		/* Whee!  Actually deliver the signal.  */
 		handle_signal(signr, &info, &ka, oldset, regs);
+
+		/*
+		 * If a signal was successfully delivered, the saved sigmask
+		 * is in its frame, and we can clear the TIF_RESTORE_SIGMASK
+		 * flag.
+		 */
+		if (test_thread_flag(TIF_RESTORE_SIGMASK))
+			clear_thread_flag(TIF_RESTORE_SIGMASK);
+
 		return 1;
 	}
 
 no_signal:
 	/* Did we come from a system call? */
 	if (regs->syscall_nr >= 0) {
 		/* Restart the system call - no handlers present */
-		if (regs->regs[REG_RET] == -ERESTARTNOHAND ||
-		    regs->regs[REG_RET] == -ERESTARTSYS ||
-		    regs->regs[REG_RET] == -ERESTARTNOINTR) {
+		switch (regs->regs[REG_RET]) {
+		case -ERESTARTNOHAND:
+		case -ERESTARTSYS:
+		case -ERESTARTNOINTR:
 			/* Decode Syscall # */
 			regs->regs[REG_RET] = regs->syscall_nr;
 			regs->pc -= 4;
+			break;
+
+		case -ERESTART_RESTARTBLOCK:
+			regs->regs[REG_RET] = __NR_restart_syscall;
+			regs->pc -= 4;
+			break;
 		}
 	}
+
+	/* No signal to deliver -- put the saved sigmask back */
+	if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
+		clear_thread_flag(TIF_RESTORE_SIGMASK);
+		sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
+	}
+
 	return 0;
 }

trunk/include/asm-sh64/thread_info.h

@@ -78,7 +78,13 @@ static inline struct thread_info *current_thread_info(void)
 #define TIF_SIGPENDING		2	/* signal pending */
 #define TIF_NEED_RESCHED	3	/* rescheduling necessary */
 #define TIF_MEMDIE		4
+#define TIF_RESTORE_SIGMASK	5	/* Restore signal mask in do_signal */
 
+#define _TIF_SYSCALL_TRACE	(1 << TIF_SYSCALL_TRACE)
+#define _TIF_SIGPENDING		(1 << TIF_SIGPENDING)
+#define _TIF_NEED_RESCHED	(1 << TIF_NEED_RESCHED)
+#define _TIF_MEMDIE		(1 << TIF_MEMDIE)
+#define _TIF_RESTORE_SIGMASK	(1 << TIF_RESTORE_SIGMASK)
 
 #endif /* __KERNEL__ */