Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-…

…linus

arch/mips/kernel/process.c

@@ -4,6 +4,7 @@
  * for more details.
  *
  * Copyright (C) 1994 - 1999, 2000 by Ralf Baechle and others.
+ * Copyright (C) 2005, 2006 by Ralf Baechle (ralf@linux-mips.org)
  * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
  * Copyright (C) 2004 Thiemo Seufer
  */
@@ -58,8 +59,8 @@ ATTRIB_NORET void cpu_idle(void)
 	}
 }
 
-extern int do_signal(sigset_t *oldset, struct pt_regs *regs);
-extern int do_signal32(sigset_t *oldset, struct pt_regs *regs);
+extern void do_signal(struct pt_regs *regs);
+extern void do_signal32(struct pt_regs *regs);
 
 /*
  * Native o32 and N64 ABI without DSP ASE

arch/mips/kernel/scall32-o32.S

@@ -617,6 +617,23 @@ einval:	li	v0, -EINVAL
 	sys	sys_inotify_init	0
 	sys	sys_inotify_add_watch	3	/* 4285 */
 	sys	sys_inotify_rm_watch	2
+	sys	sys_migrate_pages	4
+	sys	sys_openat		4
+	sys	sys_mkdirat		3
+	sys	sys_mknodat		4	/* 4290 */
+	sys	sys_fchownat		5
+	sys	sys_futimesat		3
+	sys	sys_newfstatat		4
+	sys	sys_unlinkat		3
+	sys	sys_renameat		4	/* 4295 */
+	sys	sys_linkat		4
+	sys	sys_symlinkat		3
+	sys	sys_readlinkat		4
+	sys	sys_fchmodat		3
+	sys	sys_faccessat		3	/* 4300 */
+	sys	sys_pselect6		6
+	sys	sys_ppoll		5
+	sys	sys_unshare		1
 	.endm
 
 	/* We pre-compute the number of _instruction_ bytes needed to

arch/mips/kernel/scall64-64.S

@@ -443,3 +443,20 @@ sys_call_table:
 	PTR	sys_inotify_init
 	PTR	sys_inotify_add_watch
 	PTR	sys_inotify_rm_watch		/* 5245 */
+	PTR	sys_migrate_pages
+	PTR	sys_openat
+	PTR	sys_mkdirat
+	PTR	sys_mknodat
+	PTR	sys_fchownat			/* 5250 */
+	PTR	sys_futimesat
+	PTR	sys_newfstatat
+	PTR	sys_unlinkat
+	PTR	sys_renameat
+	PTR	sys_linkat			/* 5255 */
+	PTR	sys_symlinkat
+	PTR	sys_readlinkat
+	PTR	sys_fchmodat
+	PTR	sys_faccessat
+	PTR	sys_pselect6			/* 5260 */
+	PTR	sys_ppoll
+	PTR	sys_unshare

arch/mips/kernel/scall64-n32.S

@@ -369,3 +369,20 @@ EXPORT(sysn32_call_table)
 	PTR	sys_inotify_init
 	PTR	sys_inotify_add_watch
 	PTR	sys_inotify_rm_watch
+	PTR	sys_migrate_pages		/* 6250 */
+	PTR	sys_openat
+	PTR	sys_mkdirat
+	PTR	sys_mknodat
+	PTR	sys_fchownat
+	PTR	sys_futimesat			/* 6255 */
+	PTR	sys_newfstatat
+	PTR	sys_unlinkat
+	PTR	sys_renameat
+	PTR	sys_linkat
+	PTR	sys_symlinkat			/* 6260 */
+	PTR	sys_readlinkat
+	PTR	sys_fchmodat
+	PTR	sys_faccessat
+	PTR	sys_pselect6
+	PTR	sys_ppoll			/* 6265 */
+	PTR	sys_unshare

arch/mips/kernel/scall64-o32.S

@@ -491,4 +491,21 @@ sys_call_table:
 	PTR	sys_inotify_init
 	PTR	sys_inotify_add_watch		/* 4285 */
 	PTR	sys_inotify_rm_watch
+	PTR	sys_migrate_pages
+	PTR	compat_sys_openat
+	PTR	sys_mkdirat
+	PTR	sys_mknodat			/* 4290 */
+	PTR	sys_fchownat
+	PTR	compat_sys_futimesat
+	PTR	compat_sys_newfstatat
+	PTR	sys_unlinkat
+	PTR	sys_renameat			/* 4295 */
+	PTR	sys_linkat
+	PTR	sys_symlinkat
+	PTR	sys_readlinkat
+	PTR	sys_fchmodat
+	PTR	sys_faccessat			/* 4300 */
+	PTR	sys_pselect6
+	PTR	sys_ppoll
+	PTR	sys_unshare
 	.size	sys_call_table,.-sys_call_table

arch/mips/kernel/signal.c

@@ -39,8 +39,6 @@
 
 #define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
 
-int do_signal(sigset_t *oldset, struct pt_regs *regs);
-
 /*
  * Atomically swap in the new signal mask, and wait for a signal.
  */
@@ -50,7 +48,7 @@ save_static_function(sys_sigsuspend);
 __attribute_used__ noinline static int
 _sys_sigsuspend(nabi_no_regargs struct pt_regs regs)
 {
-	sigset_t saveset, newset;
+	sigset_t newset;
 	sigset_t __user *uset;
 
 	uset = (sigset_t __user *) regs.regs[4];
@@ -59,27 +57,23 @@ _sys_sigsuspend(nabi_no_regargs struct pt_regs regs)
 	sigdelsetmask(&newset, ~_BLOCKABLE);
 
 	spin_lock_irq(&current->sighand->siglock);
-	saveset = current->blocked;
+	current->saved_sigmask = current->blocked;
 	current->blocked = newset;
 	recalc_sigpending();
 	spin_unlock_irq(&current->sighand->siglock);
 
-	regs.regs[2] = EINTR;
-	regs.regs[7] = 1;
-	while (1) {
-		current->state = TASK_INTERRUPTIBLE;
-		schedule();
-		if (do_signal(&saveset, &regs))
-			return -EINTR;
-	}
+	current->state = TASK_INTERRUPTIBLE;
+	schedule();
+	set_thread_flag(TIF_RESTORE_SIGMASK);
+	return -ERESTARTNOHAND;
 }
 #endif
 
 save_static_function(sys_rt_sigsuspend);
 __attribute_used__ noinline static int
 _sys_rt_sigsuspend(nabi_no_regargs struct pt_regs regs)
 {
-	sigset_t saveset, newset;
+	sigset_t newset;
 	sigset_t __user *unewset;
 	size_t sigsetsize;
 
@@ -94,19 +88,15 @@ _sys_rt_sigsuspend(nabi_no_regargs struct pt_regs regs)
 	sigdelsetmask(&newset, ~_BLOCKABLE);
 
 	spin_lock_irq(&current->sighand->siglock);
-	saveset = current->blocked;
+	current->saved_sigmask = current->blocked;
 	current->blocked = newset;
         recalc_sigpending();
 	spin_unlock_irq(&current->sighand->siglock);
 
-	regs.regs[2] = EINTR;
-	regs.regs[7] = 1;
-	while (1) {
-		current->state = TASK_INTERRUPTIBLE;
-		schedule();
-		if (do_signal(&saveset, &regs))
-			return -EINTR;
-	}
+	current->state = TASK_INTERRUPTIBLE;
+	schedule();
+	set_thread_flag(TIF_RESTORE_SIGMASK);
+	return -ERESTARTNOHAND;
 }
 
 #ifdef CONFIG_TRAD_SIGNALS
@@ -315,11 +305,11 @@ int setup_frame(struct k_sigaction * ka, struct pt_regs *regs,
 	       current->comm, current->pid,
 	       frame, regs->cp0_epc, frame->regs[31]);
 #endif
-        return 1;
+        return 0;
 
 give_sigsegv:
 	force_sigsegv(signr, current);
-	return 0;
+	return -EFAULT;
 }
 #endif
 
@@ -375,11 +365,11 @@ int setup_rt_frame(struct k_sigaction * ka, struct pt_regs *regs,
 	       current->comm, current->pid,
 	       frame, regs->cp0_epc, regs->regs[31]);
 #endif
-	return 1;
+	return 0;
 
 give_sigsegv:
 	force_sigsegv(signr, current);
-	return 0;
+	return -EFAULT;
 }
 
 static inline int handle_signal(unsigned long sig, siginfo_t *info,
@@ -393,7 +383,7 @@ static inline int handle_signal(unsigned long sig, siginfo_t *info,
 		regs->regs[2] = EINTR;
 		break;
 	case ERESTARTSYS:
-		if(!(ka->sa.sa_flags & SA_RESTART)) {
+		if (!(ka->sa.sa_flags & SA_RESTART)) {
 			regs->regs[2] = EINTR;
 			break;
 		}
@@ -420,9 +410,10 @@ static inline int handle_signal(unsigned long sig, siginfo_t *info,
 	return ret;
 }
 
-int do_signal(sigset_t *oldset, struct pt_regs *regs)
+void do_signal(struct pt_regs *regs)
 {
 	struct k_sigaction ka;
+	sigset_t *oldset;
 	siginfo_t info;
 	int signr;
 
@@ -432,17 +423,31 @@ int do_signal(sigset_t *oldset, struct pt_regs *regs)
 	 * if so.
 	 */
 	if (!user_mode(regs))
-		return 1;
+		return;
 
 	if (try_to_freeze())
 		goto no_signal;
 
-	if (!oldset)
+	if (test_thread_flag(TIF_RESTORE_SIGMASK))
+		oldset = &current->saved_sigmask;
+	else
 		oldset = &current->blocked;
 
+
 	signr = get_signal_to_deliver(&info, &ka, regs, NULL);
-	if (signr > 0)
-		return handle_signal(signr, &info, &ka, oldset, regs);
+	if (signr > 0) {
+		/* Whee!  Actually deliver the signal.  */
+		if (handle_signal(signr, &info, &ka, oldset, regs) == 0) {
+			/*
+			 * A signal was successfully delivered; the saved
+			 * sigmask will have been stored in the signal frame,
+			 * and will be restored by sigreturn, so we can simply
+			 * clear the TIF_RESTORE_SIGMASK flag.
+			 */
+			if (test_thread_flag(TIF_RESTORE_SIGMASK))
+				clear_thread_flag(TIF_RESTORE_SIGMASK);
+		}
+	}
 
 no_signal:
 	/*
@@ -463,18 +468,25 @@ int do_signal(sigset_t *oldset, struct pt_regs *regs)
 			regs->cp0_epc -= 4;
 		}
 	}
-	return 0;
+
+	/*
+	 * If there's no signal to deliver, we just 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);
+	}
 }
 
 /*
  * notification of userspace execution resumption
- * - triggered by current->work.notify_resume
+ * - triggered by the TIF_WORK_MASK flags
  */
-asmlinkage void do_notify_resume(struct pt_regs *regs, sigset_t *oldset,
+asmlinkage void do_notify_resume(struct pt_regs *regs, void *unused,
 	__u32 thread_info_flags)
 {
 	/* deal with pending signal delivery */
-	if (thread_info_flags & _TIF_SIGPENDING) {
-		current->thread.abi->do_signal(oldset, regs);
-	}
+	if (thread_info_flags & (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK))
+		current->thread.abi->do_signal(regs);
 }

arch/mips/kernel/signal32.c

@@ -694,11 +694,11 @@ int setup_frame_32(struct k_sigaction * ka, struct pt_regs *regs,
 	       current->comm, current->pid,
 	       frame, regs->cp0_epc, frame->sf_code);
 #endif
-	return 1;
+	return 0;
 
 give_sigsegv:
 	force_sigsegv(signr, current);
-	return 0;
+	return -EFAULT;
 }
 
 int setup_rt_frame_32(struct k_sigaction * ka, struct pt_regs *regs,
@@ -765,11 +765,11 @@ int setup_rt_frame_32(struct k_sigaction * ka, struct pt_regs *regs,
 	       current->comm, current->pid,
 	       frame, regs->cp0_epc, frame->rs_code);
 #endif
-	return 1;
+	return 0;
 
 give_sigsegv:
 	force_sigsegv(signr, current);
-	return 0;
+	return -EFAULT;
 }
 
 static inline int handle_signal(unsigned long sig, siginfo_t *info,

arch/mips/kernel/signal_n32.c

@@ -186,9 +186,9 @@ int setup_rt_frame_n32(struct k_sigaction * ka,
 	       current->comm, current->pid,
 	       frame, regs->cp0_epc, regs->regs[31]);
 #endif
-	return 1;
+	return 0;
 
 give_sigsegv:
 	force_sigsegv(signr, current);
-	return 0;
+	return -EFAULT;
 }