9 files changed, 24 insertions, 103 deletions

diff --git a/arch/um/kernel/exec.c b/arch/um/kernel/exec.c
index fda30d21fb9..97974c1bdd1 100644
--- a/arch/um/kernel/exec.c
+++ b/arch/um/kernel/exec.c
@@ -8,6 +8,7 @@
 #include "linux/smp_lock.h"
 #include "linux/ptrace.h"
 #include "linux/sched.h"
+#include "linux/slab.h"
 #include "asm/current.h"
 #include "asm/processor.h"
 #include "asm/uaccess.h"
diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c
index 89474ba0741..a3f0b04d710 100644
--- a/arch/um/kernel/irq.c
+++ b/arch/um/kernel/irq.c
@@ -12,6 +12,7 @@
 #include "linux/module.h"
 #include "linux/sched.h"
 #include "linux/seq_file.h"
+#include "linux/slab.h"
 #include "as-layout.h"
 #include "kern_util.h"
 #include "os.h"
diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c
index a5d5e70cf6f..8137ccc9635 100644
--- a/arch/um/kernel/mem.c
+++ b/arch/um/kernel/mem.c
@@ -5,10 +5,10 @@
 
 #include <linux/stddef.h>
 #include <linux/bootmem.h>
-#include <linux/gfp.h>
 #include <linux/highmem.h>
 #include <linux/mm.h>
 #include <linux/swap.h>
+#include <linux/slab.h>
 #include <asm/fixmap.h>
 #include <asm/page.h>
 #include "as-layout.h"
diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c
index 2f910a1b745..fab4371184f 100644
--- a/arch/um/kernel/process.c
+++ b/arch/um/kernel/process.c
@@ -7,13 +7,13 @@
 #include <linux/stddef.h>
 #include <linux/err.h>
 #include <linux/hardirq.h>
-#include <linux/gfp.h>
 #include <linux/mm.h>
 #include <linux/module.h>
 #include <linux/personality.h>
 #include <linux/proc_fs.h>
 #include <linux/ptrace.h>
 #include <linux/random.h>
+#include <linux/slab.h>
 #include <linux/sched.h>
 #include <linux/seq_file.h>
 #include <linux/tick.h>
diff --git a/arch/um/kernel/ptrace.c b/arch/um/kernel/ptrace.c
index 8e3d69e4fcb..484509948ee 100644
--- a/arch/um/kernel/ptrace.c
+++ b/arch/um/kernel/ptrace.c
@@ -12,16 +12,25 @@
 #endif
 #include "skas_ptrace.h"
 
-static inline void set_singlestepping(struct task_struct *child, int on)
+
+
+void user_enable_single_step(struct task_struct *child)
 {
-	if (on)
-		child->ptrace |= PT_DTRACE;
-	else
-		child->ptrace &= ~PT_DTRACE;
+	child->ptrace |= PT_DTRACE;
 	child->thread.singlestep_syscall = 0;
 
 #ifdef SUBARCH_SET_SINGLESTEPPING
-	SUBARCH_SET_SINGLESTEPPING(child, on);
+	SUBARCH_SET_SINGLESTEPPING(child, 1);
+#endif
+}
+
+void user_disable_single_step(struct task_struct *child)
+{
+	child->ptrace &= ~PT_DTRACE;
+	child->thread.singlestep_syscall = 0;
+
+#ifdef SUBARCH_SET_SINGLESTEPPING
+	SUBARCH_SET_SINGLESTEPPING(child, 0);
 #endif
 }
 
@@ -30,7 +39,7 @@ static inline void set_singlestepping(struct task_struct *child, int on)
  */
 void ptrace_disable(struct task_struct *child)
 {
-	set_singlestepping(child,0);
+	user_disable_single_step(child);
 }
 
 extern int peek_user(struct task_struct * child, long addr, long data);
@@ -69,53 +78,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 		ret = -EIO;
 		break;
 
-	/* continue and stop at next (return from) syscall */
-	case PTRACE_SYSCALL:
-	/* restart after signal. */
-	case PTRACE_CONT: {
-		ret = -EIO;
-		if (!valid_signal(data))
-			break;
-
-		set_singlestepping(child, 0);
-		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;
-		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: {
-		ret = 0;
-		if (child->exit_state == EXIT_ZOMBIE)	/* already dead */
-			break;
-
-		set_singlestepping(child, 0);
-		child->exit_code = SIGKILL;
-		wake_up_process(child);
-		break;
-	}
-
-	case PTRACE_SINGLESTEP: {  /* set the trap flag. */
-		ret = -EIO;
-		if (!valid_signal(data))
-			break;
-		clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-		set_singlestepping(child, 1);
-		child->exit_code = data;
-		/* give it a chance to run. */
-		wake_up_process(child);
-		ret = 0;
-		break;
-	}
-
 #ifdef PTRACE_GETREGS
 	case PTRACE_GETREGS: { /* Get all gp regs from the child. */
 		if (!access_ok(VERIFY_WRITE, p, MAX_REG_OFFSET)) {
diff --git a/arch/um/kernel/reboot.c b/arch/um/kernel/reboot.c
index 00197d3d21e..869bec9f251 100644
--- a/arch/um/kernel/reboot.c
+++ b/arch/um/kernel/reboot.c
@@ -4,6 +4,7 @@
  */
 
 #include "linux/sched.h"
+#include "linux/slab.h"
 #include "kern_util.h"
 #include "os.h"
 #include "skas.h"
diff --git a/arch/um/kernel/skas/mmu.c b/arch/um/kernel/skas/mmu.c
index 8bfd1e90581..3d099f97478 100644
--- a/arch/um/kernel/skas/mmu.c
+++ b/arch/um/kernel/skas/mmu.c
@@ -5,6 +5,7 @@
 
 #include "linux/mm.h"
 #include "linux/sched.h"
+#include "linux/slab.h"
 #include "asm/pgalloc.h"
 #include "asm/pgtable.h"
 #include "as-layout.h"
diff --git a/arch/um/kernel/skas/syscall.c b/arch/um/kernel/skas/syscall.c
index 4e3b820bd2b..f5173e1ec3a 100644
--- a/arch/um/kernel/skas/syscall.c
+++ b/arch/um/kernel/skas/syscall.c
@@ -10,7 +10,7 @@
 #include "sysdep/syscalls.h"
 
 extern int syscall_table_size;
-#define NR_syscalls (syscall_table_size / sizeof(void *))
+#define NR_SYSCALLS (syscall_table_size / sizeof(void *))
 
 void handle_syscall(struct uml_pt_regs *r)
 {
@@ -30,7 +30,7 @@ void handle_syscall(struct uml_pt_regs *r)
 	 * in case it's a compiler bug.
 	 */
 	syscall = UPT_SYSCALL_NR(r);
-	if ((syscall >= NR_syscalls) || (syscall < 0))
+	if ((syscall >= NR_SYSCALLS) || (syscall < 0))
 		result = -ENOSYS;
 	else result = EXECUTE_SYSCALL(syscall, regs);
 
diff --git a/arch/um/kernel/syscall.c b/arch/um/kernel/syscall.c
index cccab850c27..4393173923f 100644
--- a/arch/um/kernel/syscall.c
+++ b/arch/um/kernel/syscall.c
@@ -51,51 +51,6 @@ long old_mmap(unsigned long addr, unsigned long len,
 	return err;
 }
 
-long sys_uname(struct old_utsname __user * name)
-{
-	long err;
-	if (!name)
-		return -EFAULT;
-	down_read(&uts_sem);
-	err = copy_to_user(name, utsname(), sizeof (*name));
-	up_read(&uts_sem);
-	return err?-EFAULT:0;
-}
-
-long sys_olduname(struct oldold_utsname __user * name)
-{
-	long error;
-
-	if (!name)
-		return -EFAULT;
-	if (!access_ok(VERIFY_WRITE,name,sizeof(struct oldold_utsname)))
-		return -EFAULT;
-
-	down_read(&uts_sem);
-
-	error = __copy_to_user(&name->sysname, &utsname()->sysname,
-			       __OLD_UTS_LEN);
-	error |= __put_user(0, name->sysname + __OLD_UTS_LEN);
-	error |= __copy_to_user(&name->nodename, &utsname()->nodename,
-				__OLD_UTS_LEN);
-	error |= __put_user(0, name->nodename + __OLD_UTS_LEN);
-	error |= __copy_to_user(&name->release, &utsname()->release,
-				__OLD_UTS_LEN);
-	error |= __put_user(0, name->release + __OLD_UTS_LEN);
-	error |= __copy_to_user(&name->version, &utsname()->version,
-				__OLD_UTS_LEN);
-	error |= __put_user(0, name->version + __OLD_UTS_LEN);
-	error |= __copy_to_user(&name->machine, &utsname()->machine,
-				__OLD_UTS_LEN);
-	error |= __put_user(0, name->machine + __OLD_UTS_LEN);
-
-	up_read(&uts_sem);
-
-	error = error ? -EFAULT : 0;
-
-	return error;
-}
-
 int kernel_execve(const char *filename, char *const argv[], char *const envp[])
 {
 	mm_segment_t fs;