7 files changed, 19 insertions, 199 deletions

diff --git a/arch/arm/kernel/calls.S b/arch/arm/kernel/calls.S
index 9314a2d681f1..37ae301cc47c 100644
--- a/arch/arm/kernel/calls.S
+++ b/arch/arm/kernel/calls.S
@@ -91,7 +91,7 @@
 		CALL(sys_settimeofday)
 /* 80 */	CALL(sys_getgroups16)
 		CALL(sys_setgroups16)
-		CALL(OBSOLETE(old_select))	/* used by libc4 */
+		CALL(OBSOLETE(sys_old_select))	/* used by libc4 */
 		CALL(sys_symlink)
 		CALL(sys_ni_syscall)		/* was sys_lstat */
 /* 85 */	CALL(sys_readlink)
@@ -99,7 +99,7 @@
 		CALL(sys_swapon)
 		CALL(sys_reboot)
 		CALL(OBSOLETE(sys_old_readdir))	/* used by libc4 */
-/* 90 */	CALL(OBSOLETE(old_mmap))	/* used by libc4 */
+/* 90 */	CALL(OBSOLETE(sys_old_mmap))	/* used by libc4 */
 		CALL(sys_munmap)
 		CALL(sys_truncate)
 		CALL(sys_ftruncate)
diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c
index c54ceb3d1f97..3875d99cc40f 100644
--- a/arch/arm/kernel/perf_event.c
+++ b/arch/arm/kernel/perf_event.c
@@ -965,7 +965,7 @@ armv6pmu_handle_irq(int irq_num,
 	 */
 	armv6_pmcr_write(pmcr);
 
-	data.addr = 0;
+	perf_sample_data_init(&data, 0);
 
 	cpuc = &__get_cpu_var(cpu_hw_events);
 	for (idx = 0; idx <= armpmu->num_events; ++idx) {
@@ -1945,7 +1945,7 @@ static irqreturn_t armv7pmu_handle_irq(int irq_num, void *dev)
 	 */
 	regs = get_irq_regs();
 
-	data.addr = 0;
+	perf_sample_data_init(&data, 0);
 
 	cpuc = &__get_cpu_var(cpu_hw_events);
 	for (idx = 0; idx <= armpmu->num_events; ++idx) {
diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c
index 08f899fb76a6..3f562a7c0a99 100644
--- a/arch/arm/kernel/ptrace.c
+++ b/arch/arm/kernel/ptrace.c
@@ -452,12 +452,23 @@ void ptrace_cancel_bpt(struct task_struct *child)
 		clear_breakpoint(child, &child->thread.debug.bp[i]);
 }
 
+void user_disable_single_step(struct task_struct *task)
+{
+	task->ptrace &= ~PT_SINGLESTEP;
+	ptrace_cancel_bpt(task);
+}
+
+void user_enable_single_step(struct task_struct *task)
+{
+	task->ptrace |= PT_SINGLESTEP;
+}
+
 /*
  * Called by kernel/ptrace.c when detaching..
  */
 void ptrace_disable(struct task_struct *child)
 {
-	single_step_disable(child);
+	user_disable_single_step(child);
 }
 
 /*
@@ -753,53 +764,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 			ret = ptrace_write_user(child, addr, data);
 			break;
 
-		/*
-		 * continue/restart and stop at next (return from) syscall
-		 */
-		case PTRACE_SYSCALL:
-		case PTRACE_CONT:
-			ret = -EIO;
-			if (!valid_signal(data))
-				break;
-			if (request == PTRACE_SYSCALL)
-				set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-			else
-				clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-			child->exit_code = data;
-			single_step_disable(child);
-			wake_up_process(child);
-			ret = 0;
-			break;
-
-		/*
-		 * make the child exit.  Best I can do is send it a sigkill.
-		 * perhaps it should be put in the status that it wants to
-		 * exit.
-		 */
-		case PTRACE_KILL:
-			single_step_disable(child);
-			if (child->exit_state != EXIT_ZOMBIE) {
-				child->exit_code = SIGKILL;
-				wake_up_process(child);
-			}
-			ret = 0;
-			break;
-
-		/*
-		 * execute single instruction.
-		 */
-		case PTRACE_SINGLESTEP:
-			ret = -EIO;
-			if (!valid_signal(data))
-				break;
-			single_step_enable(child);
-			clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-			child->exit_code = data;
-			/* give it a chance to run. */
-			wake_up_process(child);
-			ret = 0;
-			break;
-
 		case PTRACE_GETREGS:
 			ret = ptrace_getregs(child, (void __user *)data);
 			break;
diff --git a/arch/arm/kernel/ptrace.h b/arch/arm/kernel/ptrace.h
index def3b6184a79..3926605b82ea 100644
--- a/arch/arm/kernel/ptrace.h
+++ b/arch/arm/kernel/ptrace.h
@@ -14,20 +14,6 @@ extern void ptrace_set_bpt(struct task_struct *);
 extern void ptrace_break(struct task_struct *, struct pt_regs *);
 
 /*
- * make sure single-step breakpoint is gone.
- */
-static inline void single_step_disable(struct task_struct *task)
-{
-	task->ptrace &= ~PT_SINGLESTEP;
-	ptrace_cancel_bpt(task);
-}
-
-static inline void single_step_enable(struct task_struct *task)
-{
-	task->ptrace |= PT_SINGLESTEP;
-}
-
-/*
  * Send SIGTRAP if we're single-stepping
  */
 static inline void single_step_trap(struct task_struct *task)
diff --git a/arch/arm/kernel/sys_arm.c b/arch/arm/kernel/sys_arm.c
index ae4027bd01bd..4350f75e578c 100644
--- a/arch/arm/kernel/sys_arm.c
+++ b/arch/arm/kernel/sys_arm.c
@@ -28,135 +28,6 @@
 #include <linux/ipc.h>
 #include <linux/uaccess.h>
 
-struct mmap_arg_struct {
-	unsigned long addr;
-	unsigned long len;
-	unsigned long prot;
-	unsigned long flags;
-	unsigned long fd;
-	unsigned long offset;
-};
-
-asmlinkage int old_mmap(struct mmap_arg_struct __user *arg)
-{
-	int error = -EFAULT;
-	struct mmap_arg_struct a;
-
-	if (copy_from_user(&a, arg, sizeof(a)))
-		goto out;
-
-	error = -EINVAL;
-	if (a.offset & ~PAGE_MASK)
-		goto out;
-
-	error = sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd, a.offset >> PAGE_SHIFT);
-out:
-	return error;
-}
-
-/*
- * Perform the select(nd, in, out, ex, tv) and mmap() system
- * calls.
- */
-
-struct sel_arg_struct {
-	unsigned long n;
-	fd_set __user *inp, *outp, *exp;
-	struct timeval __user *tvp;
-};
-
-asmlinkage int old_select(struct sel_arg_struct __user *arg)
-{
-	struct sel_arg_struct a;
-
-	if (copy_from_user(&a, arg, sizeof(a)))
-		return -EFAULT;
-	/* sys_select() does the appropriate kernel locking */
-	return sys_select(a.n, a.inp, a.outp, a.exp, a.tvp);
-}
-
-#if !defined(CONFIG_AEABI) || defined(CONFIG_OABI_COMPAT)
-/*
- * sys_ipc() is the de-multiplexer for the SysV IPC calls..
- *
- * This is really horribly ugly.
- */
-asmlinkage int sys_ipc(uint call, int first, int second, int third,
-		       void __user *ptr, long fifth)
-{
-	int version, ret;
-
-	version = call >> 16; /* hack for backward compatibility */
-	call &= 0xffff;
-
-	switch (call) {
-	case SEMOP:
-		return sys_semtimedop (first, (struct sembuf __user *)ptr, second, NULL);
-	case SEMTIMEDOP:
-		return sys_semtimedop(first, (struct sembuf __user *)ptr, second,
-					(const struct timespec __user *)fifth);
-
-	case SEMGET:
-		return sys_semget (first, second, third);
-	case SEMCTL: {
-		union semun fourth;
-		if (!ptr)
-			return -EINVAL;
-		if (get_user(fourth.__pad, (void __user * __user *) ptr))
-			return -EFAULT;
-		return sys_semctl (first, second, third, fourth);
-	}
-
-	case MSGSND:
-		return sys_msgsnd(first, (struct msgbuf __user *) ptr, 
-				  second, third);
-	case MSGRCV:
-		switch (version) {
-		case 0: {
-			struct ipc_kludge tmp;
-			if (!ptr)
-				return -EINVAL;
-			if (copy_from_user(&tmp,(struct ipc_kludge __user *)ptr,
-					   sizeof (tmp)))
-				return -EFAULT;
-			return sys_msgrcv (first, tmp.msgp, second,
-					   tmp.msgtyp, third);
-		}
-		default:
-			return sys_msgrcv (first,
-					   (struct msgbuf __user *) ptr,
-					   second, fifth, third);
-		}
-	case MSGGET:
-		return sys_msgget ((key_t) first, second);
-	case MSGCTL:
-		return sys_msgctl(first, second, (struct msqid_ds __user *)ptr);
-
-	case SHMAT:
-		switch (version) {
-		default: {
-			ulong raddr;
-			ret = do_shmat(first, (char __user *)ptr, second, &raddr);
-			if (ret)
-				return ret;
-			return put_user(raddr, (ulong __user *)third);
-		}
-		case 1: /* Of course, we don't support iBCS2! */
-			return -EINVAL;
-		}
-	case SHMDT: 
-		return sys_shmdt ((char __user *)ptr);
-	case SHMGET:
-		return sys_shmget (first, second, third);
-	case SHMCTL:
-		return sys_shmctl (first, second,
-				   (struct shmid_ds __user *) ptr);
-	default:
-		return -ENOSYS;
-	}
-}
-#endif
-
 /* Fork a new task - this creates a new program thread.
  * This is called indirectly via a small wrapper
  */
diff --git a/arch/arm/kernel/sys_oabi-compat.c b/arch/arm/kernel/sys_oabi-compat.c
index d59a0cd537f0..33ff678e32f2 100644
--- a/arch/arm/kernel/sys_oabi-compat.c
+++ b/arch/arm/kernel/sys_oabi-compat.c
@@ -346,9 +346,6 @@ asmlinkage long sys_oabi_semop(int semid, struct oabi_sembuf __user *tsops,
 	return sys_oabi_semtimedop(semid, tsops, nsops, NULL);
 }
 
-extern asmlinkage int sys_ipc(uint call, int first, int second, int third,
-			      void __user *ptr, long fifth);
-
 asmlinkage int sys_oabi_ipc(uint call, int first, int second, int third,
 			    void __user *ptr, long fifth)
 {
diff --git a/arch/arm/kernel/unwind.c b/arch/arm/kernel/unwind.c
index 786ac2b6914a..50292cd9c120 100644
--- a/arch/arm/kernel/unwind.c
+++ b/arch/arm/kernel/unwind.c
@@ -359,7 +359,9 @@ void unwind_backtrace(struct pt_regs *regs, struct task_struct *tsk)
 		frame.fp = regs->ARM_fp;
 		frame.sp = regs->ARM_sp;
 		frame.lr = regs->ARM_lr;
-		frame.pc = regs->ARM_pc;
+		/* PC might be corrupted, use LR in that case. */
+		frame.pc = kernel_text_address(regs->ARM_pc)
+			 ? regs->ARM_pc : regs->ARM_lr;
 	} else if (tsk == current) {
 		frame.fp = (unsigned long)__builtin_frame_address(0);
 		frame.sp = current_sp;