Merge with /home/shaggy/git/linus-clean/

24 files changed, 132 insertions, 247 deletions

diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 3cfb8be3ff6..f944b58cdfe 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -9,10 +9,6 @@ config MMU
 	bool
 	default y
 
-config UID16
-	bool
-	default y
-
 config HIGHMEM
 	bool
 	default y
@@ -55,6 +51,10 @@ config NR_CPUS
 	depends on SMP
 	default "32"
 
+config SPARC
+	bool
+	default y
+
 # Identify this as a Sparc32 build
 config SPARC32
 	bool
diff --git a/arch/sparc/Makefile b/arch/sparc/Makefile
index dea48f6cff3..4cdbb2d59ed 100644
--- a/arch/sparc/Makefile
+++ b/arch/sparc/Makefile
@@ -34,7 +34,7 @@ libs-y += arch/sparc/prom/ arch/sparc/lib/
 # Renaming is done to avoid confusing pattern matching rules in 2.5.45 (multy-)
 INIT_Y		:= $(patsubst %/, %/built-in.o, $(init-y))
 CORE_Y		:= $(core-y)
-CORE_Y		+= kernel/ mm/ fs/ ipc/ security/ crypto/
+CORE_Y		+= kernel/ mm/ fs/ ipc/ security/ crypto/ block/
 CORE_Y		:= $(patsubst %/, %/built-in.o, $(CORE_Y))
 DRIVERS_Y	:= $(patsubst %/, %/built-in.o, $(drivers-y))
 NET_Y		:= $(patsubst %/, %/built-in.o, $(net-y))
diff --git a/arch/sparc/kernel/ebus.c b/arch/sparc/kernel/ebus.c
index 1754192c69d..5c3529ceb5d 100644
--- a/arch/sparc/kernel/ebus.c
+++ b/arch/sparc/kernel/ebus.c
@@ -22,7 +22,7 @@
 #include <asm/oplib.h>
 #include <asm/bpp.h>
 
-struct linux_ebus *ebus_chain = 0;
+struct linux_ebus *ebus_chain = NULL;
 
 /* We are together with pcic.c under CONFIG_PCI. */
 extern unsigned int pcic_pin_to_irq(unsigned int, char *name);
@@ -46,7 +46,7 @@ static struct ebus_device_irq je1_1[] = {
 	{ "SUNW,CS4231",	 0 },
 	{ "parallel",		 0 },
 	{ "se",			 2 },
-	{ 0, 0 }
+	{ NULL, 0 }
 };
 
 /*
@@ -55,7 +55,7 @@ static struct ebus_device_irq je1_1[] = {
  */
 static struct ebus_system_entry ebus_blacklist[] = {
 	{ "SUNW,JavaEngine1", je1_1 },
-	{ 0, 0 }
+	{ NULL, NULL }
 };
 
 static struct ebus_device_irq *ebus_blackp = NULL;
@@ -233,7 +233,7 @@ void __init fill_ebus_device(int node, struct linux_ebus_device *dev)
 			ebus_alloc(sizeof(struct linux_ebus_child));
 
 		child = dev->children;
-		child->next = 0;
+		child->next = NULL;
 		child->parent = dev;
 		child->bus = dev->bus;
 		fill_ebus_child(node, &regs[0], child);
@@ -243,7 +243,7 @@ void __init fill_ebus_device(int node, struct linux_ebus_device *dev)
 				ebus_alloc(sizeof(struct linux_ebus_child));
 
 			child = child->next;
-			child->next = 0;
+			child->next = NULL;
 			child->parent = dev;
 			child->bus = dev->bus;
 			fill_ebus_child(node, &regs[0], child);
@@ -275,7 +275,7 @@ void __init ebus_init(void)
 		}
 	}
 
-	pdev = pci_get_device(PCI_VENDOR_ID_SUN, PCI_DEVICE_ID_SUN_EBUS, 0);
+	pdev = pci_get_device(PCI_VENDOR_ID_SUN, PCI_DEVICE_ID_SUN_EBUS, NULL);
 	if (!pdev) {
 		return;
 	}
@@ -284,7 +284,7 @@ void __init ebus_init(void)
 
 	ebus_chain = ebus = (struct linux_ebus *)
 			ebus_alloc(sizeof(struct linux_ebus));
-	ebus->next = 0;
+	ebus->next = NULL;
 
 	while (ebusnd) {
 
@@ -325,8 +325,8 @@ void __init ebus_init(void)
 				ebus_alloc(sizeof(struct linux_ebus_device));
 
 		dev = ebus->devices;
-		dev->next = 0;
-		dev->children = 0;
+		dev->next = NULL;
+		dev->children = NULL;
 		dev->bus = ebus;
 		fill_ebus_device(nd, dev);
 
@@ -335,8 +335,8 @@ void __init ebus_init(void)
 				ebus_alloc(sizeof(struct linux_ebus_device));
 
 			dev = dev->next;
-			dev->next = 0;
-			dev->children = 0;
+			dev->next = NULL;
+			dev->children = NULL;
 			dev->bus = ebus;
 			fill_ebus_device(nd, dev);
 		}
@@ -353,7 +353,7 @@ void __init ebus_init(void)
 		ebus->next = (struct linux_ebus *)
 			ebus_alloc(sizeof(struct linux_ebus));
 		ebus = ebus->next;
-		ebus->next = 0;
+		ebus->next = NULL;
 		++num_ebus;
 	}
 	if (pdev)
diff --git a/arch/sparc/kernel/entry.S b/arch/sparc/kernel/entry.S
index 03ecb4e4614..c51d08d218e 100644
--- a/arch/sparc/kernel/entry.S
+++ b/arch/sparc/kernel/entry.S
@@ -1277,62 +1277,6 @@ sys_sigstack:
 	 mov	%l5, %o7
 
 	.align	4
-	.globl	sys_sigpause
-sys_sigpause:
-	/* Note: %o0 already has correct value... */
-	call	do_sigpause
-	 add	%sp, STACKFRAME_SZ, %o1
-
-	ld	[%curptr + TI_FLAGS], %l5
-	andcc	%l5, _TIF_SYSCALL_TRACE, %g0
-	be	1f
-	 nop
-
-	call	syscall_trace
-	 nop
-
-1:
-	/* We are returning to a signal handler. */
-	RESTORE_ALL
-
-	.align	4
-	.globl	sys_sigsuspend
-sys_sigsuspend:
-	call	do_sigsuspend
-	 add	%sp, STACKFRAME_SZ, %o0
-
-	ld	[%curptr + TI_FLAGS], %l5
-	andcc	%l5, _TIF_SYSCALL_TRACE, %g0
-	be	1f
-	 nop
-
-	call	syscall_trace
-	 nop
-
-1:
-	/* We are returning to a signal handler. */
-	RESTORE_ALL
-
-	.align	4
-	.globl	sys_rt_sigsuspend
-sys_rt_sigsuspend:
-	/* Note: %o0, %o1 already have correct value... */
-	call	do_rt_sigsuspend
-	 add	%sp, STACKFRAME_SZ, %o2
-
-	ld	[%curptr + TI_FLAGS], %l5
-	andcc	%l5, _TIF_SYSCALL_TRACE, %g0
-	be	1f
-	 nop
-
-	call	syscall_trace
-	 nop
-
-1:
-	/* We are returning to a signal handler. */
-	RESTORE_ALL
-
-	.align	4
 	.globl	sys_sigreturn
 sys_sigreturn:
 	call	do_sigreturn
diff --git a/arch/sparc/kernel/ioport.c b/arch/sparc/kernel/ioport.c
index d0f2bd227c4..d39c9f20627 100644
--- a/arch/sparc/kernel/ioport.c
+++ b/arch/sparc/kernel/ioport.c
@@ -252,7 +252,7 @@ void *sbus_alloc_consistent(struct sbus_dev *sdev, long len, u32 *dma_addrp)
 	}
 
 	order = get_order(len_total);
-	if ((va = __get_free_pages(GFP_KERNEL, order)) == 0)
+	if ((va = __get_free_pages(GFP_KERNEL|__GFP_COMP, order)) == 0)
 		goto err_nopages;
 
 	if ((res = kmalloc(sizeof(struct resource), GFP_KERNEL)) == NULL)
diff --git a/arch/sparc/kernel/led.c b/arch/sparc/kernel/led.c
index 2a3afca453c..313d1620ae8 100644
--- a/arch/sparc/kernel/led.c
+++ b/arch/sparc/kernel/led.c
@@ -55,7 +55,7 @@ static int led_read_proc(char *buf, char **start, off_t offset, int count,
 	return len;
 }
 
-static int led_write_proc(struct file *file, const char *buffer,
+static int led_write_proc(struct file *file, const char __user *buffer,
 			  unsigned long count, void *data)
 {
 	char *buf = NULL;
diff --git a/arch/sparc/kernel/pcic.c b/arch/sparc/kernel/pcic.c
index cccfc12802e..42002b742de 100644
--- a/arch/sparc/kernel/pcic.c
+++ b/arch/sparc/kernel/pcic.c
@@ -161,7 +161,7 @@ static struct pcic_sn2list pcic_known_sysnames[] = {
 static int pcic0_up;
 static struct linux_pcic pcic0;
 
-void * __iomem pcic_regs;
+void __iomem *pcic_regs;
 volatile int pcic_speculative;
 volatile int pcic_trapped;
 
diff --git a/arch/sparc/kernel/process.c b/arch/sparc/kernel/process.c
index ea864741146..fbb05a452e5 100644
--- a/arch/sparc/kernel/process.c
+++ b/arch/sparc/kernel/process.c
@@ -302,7 +302,7 @@ void show_stack(struct task_struct *tsk, unsigned long *_ksp)
 	int count = 0;
 
 	if (tsk != NULL)
-		task_base = (unsigned long) tsk->thread_info;
+		task_base = (unsigned long) task_stack_page(tsk);
 	else
 		task_base = (unsigned long) current_thread_info();
 
@@ -337,7 +337,7 @@ EXPORT_SYMBOL(dump_stack);
  */
 unsigned long thread_saved_pc(struct task_struct *tsk)
 {
-	return tsk->thread_info->kpc;
+	return task_thread_info(tsk)->kpc;
 }
 
 /*
@@ -392,7 +392,7 @@ void flush_thread(void)
 		/* We must fixup kregs as well. */
 		/* XXX This was not fixed for ti for a while, worked. Unused? */
 		current->thread.kregs = (struct pt_regs *)
-		    ((char *)current->thread_info + (THREAD_SIZE - TRACEREG_SZ));
+		    (task_stack_page(current) + (THREAD_SIZE - TRACEREG_SZ));
 	}
 }
 
@@ -459,7 +459,7 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long sp,
 		unsigned long unused,
 		struct task_struct *p, struct pt_regs *regs)
 {
-	struct thread_info *ti = p->thread_info;
+	struct thread_info *ti = task_thread_info(p);
 	struct pt_regs *childregs;
 	char *new_stack;
 
@@ -482,7 +482,7 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long sp,
 	 *  V                      V (stk.fr.) V  (pt_regs)  { (stk.fr.) }
 	 *  +----- - - - - - ------+===========+============={+==========}+
 	 */
-	new_stack = (char*)ti + THREAD_SIZE;
+	new_stack = task_stack_page(p) + THREAD_SIZE;
 	if (regs->psr & PSR_PS)
 		new_stack -= STACKFRAME_SZ;
 	new_stack -= STACKFRAME_SZ + TRACEREG_SZ;
@@ -724,7 +724,7 @@ unsigned long get_wchan(struct task_struct *task)
             task->state == TASK_RUNNING)
 		goto out;
 
-	fp = task->thread_info->ksp + bias;
+	fp = task_thread_info(task)->ksp + bias;
 	do {
 		/* Bogus frame pointer? */
 		if (fp < (task_base + sizeof(struct thread_info)) ||
diff --git a/arch/sparc/kernel/ptrace.c b/arch/sparc/kernel/ptrace.c
index 475c4c13462..1baf13ed5c3 100644
--- a/arch/sparc/kernel/ptrace.c
+++ b/arch/sparc/kernel/ptrace.c
@@ -75,7 +75,7 @@ static inline void read_sunos_user(struct pt_regs *regs, unsigned long offset,
 				   struct task_struct *tsk, long __user *addr)
 {
 	struct pt_regs *cregs = tsk->thread.kregs;
-	struct thread_info *t = tsk->thread_info;
+	struct thread_info *t = task_thread_info(tsk);
 	int v;
 	
 	if(offset >= 1024)
@@ -170,7 +170,7 @@ static inline void write_sunos_user(struct pt_regs *regs, unsigned long offset,
 				    struct task_struct *tsk)
 {
 	struct pt_regs *cregs = tsk->thread.kregs;
-	struct thread_info *t = tsk->thread_info;
+	struct thread_info *t = task_thread_info(tsk);
 	unsigned long value = regs->u_regs[UREG_I3];
 
 	if(offset >= 1024)
@@ -286,40 +286,17 @@ asmlinkage void do_ptrace(struct pt_regs *regs)
 			       s, (int) request, (int) pid, addr, data, addr2);
 	}
 #endif
-	if (request == PTRACE_TRACEME) {
-		int my_ret;
-
-		/* are we already being traced? */
-		if (current->ptrace & PT_PTRACED) {
-			pt_error_return(regs, EPERM);
-			goto out;
-		}
-		my_ret = security_ptrace(current->parent, current);
-		if (my_ret) {
-			pt_error_return(regs, -my_ret);
-			goto out;
-		}
 
-		/* set the ptrace bit in the process flags. */
-		current->ptrace |= PT_PTRACED;
+	if (request == PTRACE_TRACEME) {
+		ret = ptrace_traceme();
 		pt_succ_return(regs, 0);
 		goto out;
 	}
-#ifndef ALLOW_INIT_TRACING
-	if (pid == 1) {
-		/* Can't dork with init. */
-		pt_error_return(regs, EPERM);
-		goto out;
-	}
-#endif
-	read_lock(&tasklist_lock);
-	child = find_task_by_pid(pid);
-	if (child)
-		get_task_struct(child);
-	read_unlock(&tasklist_lock);
 
-	if (!child) {
-		pt_error_return(regs, ESRCH);
+	child = ptrace_get_task_struct(pid);
+	if (IS_ERR(child)) {
+		ret = PTR_ERR(child);
+		pt_error_return(regs, -ret);
 		goto out;
 	}
 
diff --git a/arch/sparc/kernel/rtrap.S b/arch/sparc/kernel/rtrap.S
index f7460d897e7..77ca6fd8125 100644
--- a/arch/sparc/kernel/rtrap.S
+++ b/arch/sparc/kernel/rtrap.S
@@ -68,15 +68,14 @@ ret_trap_lockless_ipi:
 
 	ld	[%curptr + TI_FLAGS], %g2
 signal_p:
-	andcc	%g2, (_TIF_NOTIFY_RESUME|_TIF_SIGPENDING), %g0
+	andcc	%g2, (_TIF_SIGPENDING|_TIF_RESTORE_SIGMASK), %g0
 	bz,a	ret_trap_continue
 	 ld	[%sp + STACKFRAME_SZ + PT_PSR], %t_psr
 
-	clr	%o0
-	mov	%l5, %o2
-	mov	%l6, %o3
+	mov	%l5, %o1
+	mov	%l6, %o2
 	call	do_signal
-	 add	%sp, STACKFRAME_SZ, %o1	! pt_regs ptr
+	 add	%sp, STACKFRAME_SZ, %o0	! pt_regs ptr
 
 	/* Fall through. */
 	ld	[%sp + STACKFRAME_SZ + PT_PSR], %t_psr
diff --git a/arch/sparc/kernel/signal.c b/arch/sparc/kernel/signal.c
index 5f34d7dc2b8..0748d8147bb 100644
--- a/arch/sparc/kernel/signal.c
+++ b/arch/sparc/kernel/signal.c
@@ -35,9 +35,6 @@ extern void fpsave(unsigned long *fpregs, unsigned long *fsr,
 		   void *fpqueue, unsigned long *fpqdepth);
 extern void fpload(unsigned long *fpregs, unsigned long *fsr);
 
-asmlinkage int do_signal(sigset_t *oldset, struct pt_regs * regs,
-			 unsigned long orig_o0, int restart_syscall);
-
 /* Signal frames: the original one (compatible with SunOS):
  *
  * Set up a signal frame... Make the stack look the way SunOS
@@ -95,98 +92,30 @@ struct rt_signal_frame {
 #define NF_ALIGNEDSZ  (((sizeof(struct new_signal_frame) + 7) & (~7)))
 #define RT_ALIGNEDSZ  (((sizeof(struct rt_signal_frame) + 7) & (~7)))
 
-/*
- * atomically swap in the new signal mask, and wait for a signal.
- * This is really tricky on the Sparc, watch out...
- */
-asmlinkage void _sigpause_common(old_sigset_t set, struct pt_regs *regs)
+static int _sigpause_common(old_sigset_t set)
 {
-	sigset_t saveset;
-
 	set &= _BLOCKABLE;
 	spin_lock_irq(&current->sighand->siglock);
-	saveset = current->blocked;
+	current->saved_sigmask = current->blocked;
 	siginitset(&current->blocked, set);
 	recalc_sigpending();
 	spin_unlock_irq(&current->sighand->siglock);
 
-	regs->pc = regs->npc;
-	regs->npc += 4;
-
-	/* Condition codes and return value where set here for sigpause,
-	 * and so got used by setup_frame, which again causes sigreturn()
-	 * to return -EINTR.
-	 */
-	while (1) {
-		current->state = TASK_INTERRUPTIBLE;
-		schedule();
-		/*
-		 * Return -EINTR and set condition code here,
-		 * so the interrupted system call actually returns
-		 * these.
-		 */
-		regs->psr |= PSR_C;
-		regs->u_regs[UREG_I0] = EINTR;
-		if (do_signal(&saveset, regs, 0, 0))
-			return;
-	}
-}
+	current->state = TASK_INTERRUPTIBLE;
+	schedule();
+	set_thread_flag(TIF_RESTORE_SIGMASK);
 
-asmlinkage void do_sigpause(unsigned int set, struct pt_regs *regs)
-{
-	_sigpause_common(set, regs);
+	return -ERESTARTNOHAND;
 }
 
-asmlinkage void do_sigsuspend (struct pt_regs *regs)
+asmlinkage int sys_sigpause(unsigned int set)
 {
-	_sigpause_common(regs->u_regs[UREG_I0], regs);
+	return _sigpause_common(set);
 }
 
-asmlinkage void do_rt_sigsuspend(sigset_t __user *uset, size_t sigsetsize,
-				 struct pt_regs *regs)
+asmlinkage int sys_sigsuspend(old_sigset_t set)
 {
-	sigset_t oldset, set;
-
-	/* XXX: Don't preclude handling different sized sigset_t's.  */
-	if (sigsetsize != sizeof(sigset_t)) {
-		regs->psr |= PSR_C;
-		regs->u_regs[UREG_I0] = EINVAL;
-		return;
-	}
-
-	if (copy_from_user(&set, uset, sizeof(set))) {
-		regs->psr |= PSR_C;
-		regs->u_regs[UREG_I0] = EFAULT;
-		return;
-	}
-
-	sigdelsetmask(&set, ~_BLOCKABLE);
-	spin_lock_irq(&current->sighand->siglock);
-	oldset = current->blocked;
-	current->blocked = set;
-	recalc_sigpending();
-	spin_unlock_irq(&current->sighand->siglock);
-
-	regs->pc = regs->npc;
-	regs->npc += 4;
-
-	/* Condition codes and return value where set here for sigpause,
-	 * and so got used by setup_frame, which again causes sigreturn()
-	 * to return -EINTR.
-	 */
-	while (1) {
-		current->state = TASK_INTERRUPTIBLE;
-		schedule();
-		/*
-		 * Return -EINTR and set condition code here,
-		 * so the interrupted system call actually returns
-		 * these.
-		 */
-		regs->psr |= PSR_C;
-		regs->u_regs[UREG_I0] = EINTR;
-		if (do_signal(&oldset, regs, 0, 0))
-			return;
-	}
+	return _sigpause_common(set);
 }
 
 static inline int
@@ -1067,13 +996,13 @@ static inline void syscall_restart(unsigned long orig_i0, struct pt_regs *regs,
  * want to handle. Thus you cannot kill init even with a SIGKILL even by
  * mistake.
  */
-asmlinkage int do_signal(sigset_t *oldset, struct pt_regs * regs,
-			 unsigned long orig_i0, int restart_syscall)
+asmlinkage void do_signal(struct pt_regs * regs, unsigned long orig_i0, int restart_syscall)
 {
 	siginfo_t info;
 	struct sparc_deliver_cookie cookie;
 	struct k_sigaction ka;
 	int signr;
+	sigset_t *oldset;
 
 	/*
 	 * XXX Disable svr4 signal handling until solaris emulation works.
@@ -1089,7 +1018,9 @@ asmlinkage int do_signal(sigset_t *oldset, struct pt_regs * regs,
 	cookie.restart_syscall = restart_syscall;
 	cookie.orig_i0 = orig_i0;
 
-	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, &cookie);
@@ -1098,7 +1029,14 @@ asmlinkage int do_signal(sigset_t *oldset, struct pt_regs * regs,
 			syscall_restart(cookie.orig_i0, regs, &ka.sa);
 		handle_signal(signr, &ka, &info, oldset,
 			      regs, svr4_signal);
-		return 1;
+		/* 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);
+		return;
 	}
 	if (cookie.restart_syscall &&
 	    (regs->u_regs[UREG_I0] == ERESTARTNOHAND ||
@@ -1115,7 +1053,14 @@ asmlinkage int do_signal(sigset_t *oldset, struct pt_regs * regs,
 		regs->pc -= 4;
 		regs->npc -= 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);
+	}
 }
 
 asmlinkage int
diff --git a/arch/sparc/kernel/sparc_ksyms.c b/arch/sparc/kernel/sparc_ksyms.c
index 1c8fd0fd930..19b25399d7e 100644
--- a/arch/sparc/kernel/sparc_ksyms.c
+++ b/arch/sparc/kernel/sparc_ksyms.c
@@ -66,7 +66,6 @@ struct poll {
 
 extern int svr4_getcontext (svr4_ucontext_t *, struct pt_regs *);
 extern int svr4_setcontext (svr4_ucontext_t *, struct pt_regs *);
-void _sigpause_common (unsigned int set, struct pt_regs *);
 extern void (*__copy_1page)(void *, const void *);
 extern void __memmove(void *, const void *, __kernel_size_t);
 extern void (*bzero_1page)(void *);
@@ -82,8 +81,6 @@ extern int __lshrdi3(int, int);
 extern int __muldi3(int, int);
 extern int __divdi3(int, int);
 
-extern void dump_thread(struct pt_regs *, struct user *);
-
 /* Private functions with odd calling conventions. */
 extern void ___atomic24_add(void);
 extern void ___atomic24_sub(void);
@@ -229,7 +226,6 @@ EXPORT_SYMBOL(kunmap_atomic);
 /* Solaris/SunOS binary compatibility */
 EXPORT_SYMBOL(svr4_setcontext);
 EXPORT_SYMBOL(svr4_getcontext);
-EXPORT_SYMBOL(_sigpause_common);
 
 EXPORT_SYMBOL(dump_thread);
 
diff --git a/arch/sparc/kernel/sun4d_smp.c b/arch/sparc/kernel/sun4d_smp.c
index cc1fc898495..40d426cce82 100644
--- a/arch/sparc/kernel/sun4d_smp.c
+++ b/arch/sparc/kernel/sun4d_smp.c
@@ -200,7 +200,7 @@ void __init smp4d_boot_cpus(void)
 			/* Cook up an idler for this guy. */
 			p = fork_idle(i);
 			cpucount++;
-			current_set[i] = p->thread_info;
+			current_set[i] = task_thread_info(p);
 			for (no = 0; !cpu_find_by_instance(no, NULL, &mid)
 				     && mid != i; no++) ;
 
diff --git a/arch/sparc/kernel/sun4m_smp.c b/arch/sparc/kernel/sun4m_smp.c
index f113422a372..a21f27d10e5 100644
--- a/arch/sparc/kernel/sun4m_smp.c
+++ b/arch/sparc/kernel/sun4m_smp.c
@@ -173,7 +173,7 @@ void __init smp4m_boot_cpus(void)
 			/* Cook up an idler for this guy. */
 			p = fork_idle(i);
 			cpucount++;
-			current_set[i] = p->thread_info;
+			current_set[i] = task_thread_info(p);
 			/* See trampoline.S for details... */
 			entry += ((i-1) * 3);
 
diff --git a/arch/sparc/kernel/sys_sunos.c b/arch/sparc/kernel/sys_sunos.c
index 81c894acd0d..288de276d9f 100644
--- a/arch/sparc/kernel/sys_sunos.c
+++ b/arch/sparc/kernel/sys_sunos.c
@@ -30,6 +30,7 @@
 #include <linux/stat.h>
 #include <linux/slab.h>
 #include <linux/pagemap.h>
+#include <linux/capability.h>
 #include <linux/errno.h>
 #include <linux/smp.h>
 #include <linux/smp_lock.h>
@@ -894,7 +895,7 @@ asmlinkage long sunos_sysconf (int name)
 		ret = ARG_MAX;
 		break;
 	case _SC_CHILD_MAX:
-		ret = CHILD_MAX;
+		ret = -1; /* no limit */
 		break;
 	case _SC_CLK_TCK:
 		ret = HZ;
diff --git a/arch/sparc/kernel/systbls.S b/arch/sparc/kernel/systbls.S
index e457a40838f..6877ae4cd1d 100644
--- a/arch/sparc/kernel/systbls.S
+++ b/arch/sparc/kernel/systbls.S
@@ -75,7 +75,10 @@ sys_call_table:
 /*265*/	.long sys_timer_delete, sys_timer_create, sys_nis_syscall, sys_io_setup, sys_io_destroy
 /*270*/	.long sys_io_submit, sys_io_cancel, sys_io_getevents, sys_mq_open, sys_mq_unlink
 /*275*/	.long sys_mq_timedsend, sys_mq_timedreceive, sys_mq_notify, sys_mq_getsetattr, sys_waitid
-/*280*/	.long sys_ni_syscall, sys_add_key, sys_request_key, sys_keyctl
+/*280*/	.long sys_ni_syscall, sys_add_key, sys_request_key, sys_keyctl, sys_openat
+/*285*/	.long sys_mkdirat, sys_mknodat, sys_fchownat, sys_futimesat, sys_newfstatat
+/*290*/	.long sys_unlinkat, sys_renameat, sys_linkat, sys_symlinkat, sys_readlinkat
+/*295*/	.long sys_fchmodat, sys_faccessat, sys_pselect6, sys_ppoll
 
 #ifdef CONFIG_SUNOS_EMUL
 	/* Now the SunOS syscall table. */
@@ -181,6 +184,11 @@ sunos_sys_table:
 	.long sunos_nosys, sunos_nosys, sunos_nosys
 	.long sunos_nosys
 /*280*/	.long sunos_nosys, sunos_nosys, sunos_nosys
+	.long sunos_nosys, sunos_nosys, sunos_nosys
+	.long sunos_nosys, sunos_nosys, sunos_nosys
 	.long sunos_nosys
+/*290*/	.long sunos_nosys, sunos_nosys, sunos_nosys
+	.long sunos_nosys, sunos_nosys, sunos_nosys
+	.long sunos_nosys, sunos_nosys, sunos_nosys
 
 #endif
diff --git a/arch/sparc/kernel/time.c b/arch/sparc/kernel/time.c
index 24814d58f9e..7dadcdb4ca4 100644
--- a/arch/sparc/kernel/time.c
+++ b/arch/sparc/kernel/time.c
@@ -49,7 +49,7 @@ DEFINE_SPINLOCK(rtc_lock);
 enum sparc_clock_type sp_clock_typ;
 DEFINE_SPINLOCK(mostek_lock);
 void __iomem *mstk48t02_regs = NULL;
-static struct mostek48t08 *mstk48t08_regs = NULL;
+static struct mostek48t08 __iomem *mstk48t08_regs = NULL;
 static int set_rtc_mmss(unsigned long);
 static int sbus_do_settimeofday(struct timespec *tv);
 
@@ -342,7 +342,7 @@ static __inline__ void clock_probe(void)
 		/* XXX r/o attribute is somewhere in r.flags */
 		r.flags = clk_reg[0].which_io;
 		r.start = clk_reg[0].phys_addr;
-		mstk48t08_regs = (struct mostek48t08 *) sbus_ioremap(&r, 0,
+		mstk48t08_regs = sbus_ioremap(&r, 0,
 		    sizeof(struct mostek48t08), "mk48t08");
 
 		mstk48t02_regs = &mstk48t08_regs->regs;
diff --git a/arch/sparc/kernel/traps.c b/arch/sparc/kernel/traps.c
index 3f451ae6648..41d45c298fb 100644
--- a/arch/sparc/kernel/traps.c
+++ b/arch/sparc/kernel/traps.c
@@ -291,7 +291,7 @@ void do_fpe_trap(struct pt_regs *regs, unsigned long pc, unsigned long npc,
 #ifndef CONFIG_SMP
 	if(!fpt) {
 #else
-        if(!(fpt->thread_info->flags & _TIF_USEDFPU)) {
+        if(!(task_thread_info(fpt)->flags & _TIF_USEDFPU)) {
 #endif
 		fpsave(&fake_regs[0], &fake_fsr, &fake_queue[0], &fake_depth);
 		regs->psr &= ~PSR_EF;
@@ -334,7 +334,7 @@ void do_fpe_trap(struct pt_regs *regs, unsigned long pc, unsigned long npc,
 	/* nope, better SIGFPE the offending process... */
 	       
 #ifdef CONFIG_SMP
-	fpt->thread_info->flags &= ~_TIF_USEDFPU;
+	task_thread_info(fpt)->flags &= ~_TIF_USEDFPU;
 #endif
 	if(psr & PSR_PS) {
 		/* The first fsr store/load we tried trapped,
diff --git a/arch/sparc/kernel/vmlinux.lds.S b/arch/sparc/kernel/vmlinux.lds.S
index 38938d2e63a..346c19a949f 100644
--- a/arch/sparc/kernel/vmlinux.lds.S
+++ b/arch/sparc/kernel/vmlinux.lds.S
@@ -85,19 +85,9 @@ SECTIONS
   }
   _end = . ;
   PROVIDE (end = .);
-  /* Stabs debugging sections.  */
-  .stab 0 : { *(.stab) }
-  .stabstr 0 : { *(.stabstr) }
-  .stab.excl 0 : { *(.stab.excl) }
-  .stab.exclstr 0 : { *(.stab.exclstr) }
-  .stab.index 0 : { *(.stab.index) }
-  .stab.indexstr 0 : { *(.stab.indexstr) }
-  .comment 0 : { *(.comment) }
-  .debug          0 : { *(.debug) }
-  .debug_srcinfo  0 : { *(.debug_srcinfo) }
-  .debug_aranges  0 : { *(.debug_aranges) }
-  .debug_pubnames 0 : { *(.debug_pubnames) }
-  .debug_sfnames  0 : { *(.debug_sfnames) }
-  .line           0 : { *(.line) }
   /DISCARD/ : { *(.exit.text) *(.exit.data) *(.exitcall.exit) }
+
+  STABS_DEBUG
+
+  DWARF_DEBUG
 }
diff --git a/arch/sparc/lib/atomic32.c b/arch/sparc/lib/atomic32.c
index 2e64e8c3e8e..de84f8534ba 100644
--- a/arch/sparc/lib/atomic32.c
+++ b/arch/sparc/lib/atomic32.c
@@ -37,17 +37,42 @@ int __atomic_add_return(int i, atomic_t *v)
 	spin_unlock_irqrestore(ATOMIC_HASH(v), flags);
 	return ret;
 }
+EXPORT_SYMBOL(__atomic_add_return);
 
-void atomic_set(atomic_t *v, int i)
+int atomic_cmpxchg(atomic_t *v, int old, int new)
 {
+	int ret;
 	unsigned long flags;
+
 	spin_lock_irqsave(ATOMIC_HASH(v), flags);
+	ret = v->counter;
+	if (likely(ret == old))
+		v->counter = new;
 
-	v->counter = i;
+	spin_unlock_irqrestore(ATOMIC_HASH(v), flags);
+	return ret;
+}
+
+int atomic_add_unless(atomic_t *v, int a, int u)
+{
+	int ret;
+	unsigned long flags;
 
+	spin_lock_irqsave(ATOMIC_HASH(v), flags);
+	ret = v->counter;
+	if (ret != u)
+		v->counter += a;
 	spin_unlock_irqrestore(ATOMIC_HASH(v), flags);
+	return ret != u;
 }
 
-EXPORT_SYMBOL(__atomic_add_return);
-EXPORT_SYMBOL(atomic_set);
+/* Atomic operations are already serializing */
+void atomic_set(atomic_t *v, int i)
+{
+	unsigned long flags;
 
+	spin_lock_irqsave(ATOMIC_HASH(v), flags);
+	v->counter = i;
+	spin_unlock_irqrestore(ATOMIC_HASH(v), flags);
+}
+EXPORT_SYMBOL(atomic_set);
diff --git a/arch/sparc/lib/bitext.c b/arch/sparc/lib/bitext.c
index 94b05e8c906..2e168d16547 100644
--- a/arch/sparc/lib/bitext.c
+++ b/arch/sparc/lib/bitext.c
@@ -10,6 +10,7 @@
  */
 
 #include <linux/smp_lock.h>
+#include <linux/string.h>
 #include <linux/bitops.h>
 
 #include <asm/bitext.h>
diff --git a/arch/sparc/mm/generic.c b/arch/sparc/mm/generic.c
index 9604893ffdb..2cb0728cee0 100644
--- a/arch/sparc/mm/generic.c
+++ b/arch/sparc/mm/generic.c
@@ -32,9 +32,7 @@ static inline void io_remap_pte_range(struct mm_struct *mm, pte_t * pte, unsigne
 	if (end > PMD_SIZE)
 		end = PMD_SIZE;
 	do {
-		pte_t oldpage = *pte;
-		pte_clear(mm, address, pte);
-		set_pte(pte, mk_pte_io(offset, prot, space));
+		set_pte_at(mm, address, pte, mk_pte_io(offset, prot, space));
 		address += PAGE_SIZE;
 		offset += PAGE_SIZE;
 		pte++;
@@ -63,7 +61,7 @@ static inline int io_remap_pmd_range(struct mm_struct *mm, pmd_t * pmd, unsigned
 }
 
 int io_remap_pfn_range(struct vm_area_struct *vma, unsigned long from,
-			unsigned long pfn, unsigned long size, pgprot_t prot)
+		       unsigned long pfn, unsigned long size, pgprot_t prot)
 {
 	int error = 0;
 	pgd_t * dir;
@@ -74,7 +72,9 @@ int io_remap_pfn_range(struct vm_area_struct *vma, unsigned long from,
 	unsigned long offset = GET_PFN(pfn) << PAGE_SHIFT;
 
 	/* See comment in mm/memory.c remap_pfn_range */
-	vma->vm_flags |= VM_IO | VM_RESERVED;
+	vma->vm_flags |= VM_IO | VM_RESERVED | VM_PFNMAP;
+	vma->vm_pgoff = (offset >> PAGE_SHIFT) |
+		((unsigned long)space << 28UL);
 
 	prot = __pgprot(pg_iobits);
 	offset -= from;
diff --git a/arch/sparc/mm/iommu.c b/arch/sparc/mm/iommu.c
index 489bf68d5f0..77840c80478 100644
--- a/arch/sparc/mm/iommu.c
+++ b/arch/sparc/mm/iommu.c
@@ -295,8 +295,7 @@ static void iommu_release_one(u32 busa, int npages, struct sbus_bus *sbus)
 	int ioptex;
 	int i;
 
-	if (busa < iommu->start)
-		BUG();
+	BUG_ON(busa < iommu->start);
 	ioptex = (busa - iommu->start) >> PAGE_SHIFT;
 	for (i = 0; i < npages; i++) {
 		iopte_val(iommu->page_table[ioptex + i]) = 0;
@@ -340,9 +339,9 @@ static int iommu_map_dma_area(dma_addr_t *pba, unsigned long va,
 	iopte_t *first;
 	int ioptex;
 
-	if ((va & ~PAGE_MASK) != 0) BUG();
-	if ((addr & ~PAGE_MASK) != 0) BUG();
-	if ((len & ~PAGE_MASK) != 0) BUG();
+	BUG_ON((va & ~PAGE_MASK) != 0);
+	BUG_ON((addr & ~PAGE_MASK) != 0);
+	BUG_ON((len & ~PAGE_MASK) != 0);
 
 	/* page color = physical address */
 	ioptex = bit_map_string_get(&iommu->usemap, len >> PAGE_SHIFT,
@@ -405,8 +404,8 @@ static void iommu_unmap_dma_area(unsigned long busa, int len)
 	unsigned long end;
 	int ioptex = (busa - iommu->start) >> PAGE_SHIFT;
 
-	if ((busa & ~PAGE_MASK) != 0) BUG();
-	if ((len & ~PAGE_MASK) != 0) BUG();
+	BUG_ON((busa & ~PAGE_MASK) != 0);
+	BUG_ON((len & ~PAGE_MASK) != 0);
 
 	iopte += ioptex;
 	end = busa + len;
diff --git a/arch/sparc/mm/sun4c.c b/arch/sparc/mm/sun4c.c
index 1d560390e28..731f19603ca 100644
--- a/arch/sparc/mm/sun4c.c
+++ b/arch/sparc/mm/sun4c.c
@@ -497,7 +497,7 @@ static void __init sun4c_probe_mmu(void)
 	patch_kernel_fault_handler();
 }
 
-volatile unsigned long *sun4c_memerr_reg = NULL;
+volatile unsigned long __iomem *sun4c_memerr_reg = NULL;
 
 void __init sun4c_probe_memerr_reg(void)
 {