fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / arch / m68k / kernel / process.c

diff --git a/arch/m68k/kernel/process.c b/arch/m68k/kernel/process.c
index 93b043e..765bb57 100644 (file)
--- a/arch/m68k/kernel/process.c
+++ b/arch/m68k/kernel/process.c
@@ -10,7 +10,6 @@
  * This file handles the architecture-dependent parts of process handling..
  */
 
-#include <linux/config.h>
 #include <linux/errno.h>
 #include <linux/module.h>
 #include <linux/sched.h>
@@ -77,7 +76,7 @@ unsigned long thread_saved_pc(struct task_struct *tsk)
 /*
  * The idle loop on an m68k..
  */
-void default_idle(void)
+static void default_idle(void)
 {
        if (!need_resched())
 #if defined(MACH_ATARI_ONLY) && !defined(CONFIG_HADES)
@@ -102,7 +101,9 @@ void cpu_idle(void)
        while (1) {
                while (!need_resched())
                        idle();
+               preempt_enable_no_resched();
                schedule();
+               preempt_disable();
        }
 }
 
@@ -113,8 +114,6 @@ void machine_restart(char * __unused)
        for (;;);
 }
 
-EXPORT_SYMBOL(machine_restart);
-
 void machine_halt(void)
 {
        if (mach_halt)
@@ -122,8 +121,6 @@ void machine_halt(void)
        for (;;);
 }
 
-EXPORT_SYMBOL(machine_halt);
-
 void machine_power_off(void)
 {
        if (mach_power_off)
@@ -131,7 +128,8 @@ void machine_power_off(void)
        for (;;);
 }
 
-EXPORT_SYMBOL(machine_power_off);
+void (*pm_power_off)(void) = machine_power_off;
+EXPORT_SYMBOL(pm_power_off);
 
 void show_regs(struct pt_regs * regs)
 {
@@ -161,7 +159,8 @@ int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
 
        {
        register long retval __asm__ ("d0");
-       register long clone_arg __asm__ ("d1") = flags | CLONE_VM | CLONE_UNTRACED;
+       register long clone_arg __asm__ ("d1") =
+               flags | CLONE_VM | CLONE_UNTRACED | CLONE_KTHREAD;
 
        retval = __NR_clone;
        __asm__ __volatile__
@@ -189,6 +188,7 @@ int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
        set_fs (fs);
        return pid;
 }
+EXPORT_SYMBOL(kernel_thread);
 
 void flush_thread(void)
 {
@@ -223,13 +223,13 @@ asmlinkage int m68k_clone(struct pt_regs *regs)
 {
        unsigned long clone_flags;
        unsigned long newsp;
-       int *parent_tidptr, *child_tidptr;
+       int __user *parent_tidptr, *child_tidptr;
 
        /* syscall2 puts clone_flags in d1 and usp in d2 */
        clone_flags = regs->d1;
        newsp = regs->d2;
-       parent_tidptr = (int *)regs->d3;
-       child_tidptr = (int *)regs->d4;
+       parent_tidptr = (int __user *)regs->d3;
+       child_tidptr = (int __user *)regs->d4;
        if (!newsp)
                newsp = rdusp();
        return do_fork(clone_flags, newsp, regs, 0,
@@ -242,10 +242,9 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long usp,
 {
        struct pt_regs * childregs;
        struct switch_stack * childstack, *stack;
-       unsigned long stack_offset, *retp;
+       unsigned long *retp;
 
-       stack_offset = THREAD_SIZE - sizeof(struct pt_regs);
-       childregs = (struct pt_regs *) ((unsigned long) (p->thread_info) + stack_offset);
+       childregs = (struct pt_regs *) (task_stack_page(p) + THREAD_SIZE) - 1;
 
        *childregs = *regs;
        childregs->d0 = 0;
@@ -314,6 +313,7 @@ int dump_fpu (struct pt_regs *regs, struct user_m68kfp_struct *fpu)
                : "memory");
        return 1;
 }
+EXPORT_SYMBOL(dump_fpu);
 
 /*
  * fill in the user structure for a core dump..
@@ -360,11 +360,12 @@ void dump_thread(struct pt_regs * regs, struct user * dump)
        /* dump floating point stuff */
        dump->u_fpvalid = dump_fpu (regs, &dump->m68kfp);
 }
+EXPORT_SYMBOL(dump_thread);
 
 /*
  * sys_execve() executes a new program.
  */
-asmlinkage int sys_execve(char *name, char **argv, char **envp)
+asmlinkage int sys_execve(char __user *name, char __user * __user *argv, char __user * __user *envp)
 {
        int error;
        char * filename;
@@ -390,7 +391,7 @@ unsigned long get_wchan(struct task_struct *p)
        if (!p || p == current || p->state == TASK_RUNNING)
                return 0;
 
-       stack_page = (unsigned long)(p->thread_info);
+       stack_page = (unsigned long)task_stack_page(p);
        fp = ((struct switch_stack *)p->thread.ksp)->a6;
        do {
                if (fp < stack_page+sizeof(struct thread_info) ||