4 files changed, 18 insertions, 71 deletions

diff --git a/arch/sh/kernel/process.c b/arch/sh/kernel/process.c
index 6dce9d0b81f8..fd4f240b833d 100644
--- a/arch/sh/kernel/process.c
+++ b/arch/sh/kernel/process.c
@@ -51,28 +51,24 @@ void enable_hlt(void)
 
 EXPORT_SYMBOL(enable_hlt);
 
-void default_idle(void)
+void cpu_idle(void)
 {
         /* endless idle loop with no priority at all */
         while (1) {
                 if (hlt_counter) {
-                        while (1)
-                                if (need_resched())
-                                        break;
+                        while (!need_resched())
+                                cpu_relax();
                 } else {
                         while (!need_resched())
                                 cpu_sleep();
                 }
 
+                preempt_enable_no_resched();
                 schedule();
+                preempt_disable();
         }
 }
 
-void cpu_idle(void)
-{
-        default_idle();
-}
-
 void machine_restart(char * __unused)
 {
         /* SR.BL=1 and invoke address error to let CPU reset (manual reset) */
diff --git a/arch/sh/kernel/ptrace.c b/arch/sh/kernel/ptrace.c
index 1fbe5a428e31..1a8be06519ec 100644
--- a/arch/sh/kernel/ptrace.c
+++ b/arch/sh/kernel/ptrace.c
@@ -80,48 +80,11 @@ void ptrace_disable(struct task_struct *child)
         /* nothing to do.. */
 }
 
-asmlinkage long sys_ptrace(long request, long pid, long addr, long data)
+long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 {
-        struct task_struct *child;
         struct user * dummy = NULL;
         int ret;
 
-        lock_kernel();
-        ret = -EPERM;
-        if (request == PTRACE_TRACEME) {
-                /* are we already being traced? */
-                if (current->ptrace & PT_PTRACED)
-                        goto out;
-                ret = security_ptrace(current->parent, current);
-                if (ret)
-                        goto out;
-                /* set the ptrace bit in the process flags. */
-                current->ptrace |= PT_PTRACED;
-                ret = 0;
-                goto out;
-        }
-        ret = -ESRCH;
-        read_lock(&tasklist_lock);
-        child = find_task_by_pid(pid);
-        if (child)
-                get_task_struct(child);
-        read_unlock(&tasklist_lock);
-        if (!child)
-                goto out;
-
-        ret = -EPERM;
-        if (pid == 1)           /* you may not mess with init */
-                goto out_tsk;
-
-        if (request == PTRACE_ATTACH) {
-                ret = ptrace_attach(child);
-                goto out_tsk;
-        }
-
-        ret = ptrace_check_attach(child, request == PTRACE_KILL);
-        if (ret < 0)
-                goto out_tsk;
-
         switch (request) {
         /* when I and D space are separate, these will need to be fixed. */
         case PTRACE_PEEKTEXT: /* read word at location addr. */ 
@@ -289,10 +252,7 @@ asmlinkage long sys_ptrace(long request, long pid, long addr, long data)
                 ret = ptrace_request(child, request, addr, data);
                 break;
         }
-out_tsk:
-        put_task_struct(child);
-out:
-        unlock_kernel();
+
         return ret;
 }
 
diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c
index 25b9d9ebe858..036050b377cd 100644
--- a/arch/sh/kernel/setup.c
+++ b/arch/sh/kernel/setup.c
@@ -83,9 +83,9 @@ static struct sh_machine_vector* __init get_mv_byname(const char* name);
 /* ... */
 #define COMMAND_LINE ((char *) (PARAM+0x100))
 
-#define RAMDISK_IMAGE_START_MASK        0x07FF
+#define RAMDISK_IMAGE_START_MASK        0x07FF
 #define RAMDISK_PROMPT_FLAG             0x8000
-#define RAMDISK_LOAD_FLAG               0x4000  
+#define RAMDISK_LOAD_FLAG               0x4000
 
 static char command_line[COMMAND_LINE_SIZE] = { 0, };
 
@@ -284,18 +284,6 @@ void __init setup_arch(char **cmdline_p)
 #define PFN_DOWN(x)     ((x) >> PAGE_SHIFT)
 #define PFN_PHYS(x)     ((x) << PAGE_SHIFT)
 
-#ifdef CONFIG_DISCONTIGMEM
-        NODE_DATA(0)->bdata = &discontig_node_bdata[0];
-        NODE_DATA(1)->bdata = &discontig_node_bdata[1];
-
-        bootmap_size = init_bootmem_node(NODE_DATA(1), 
-                                         PFN_UP(__MEMORY_START_2ND),
-                                         PFN_UP(__MEMORY_START_2ND),
-                                         PFN_DOWN(__MEMORY_START_2ND+__MEMORY_SIZE_2ND));
-        free_bootmem_node(NODE_DATA(1), __MEMORY_START_2ND, __MEMORY_SIZE_2ND);
-        reserve_bootmem_node(NODE_DATA(1), __MEMORY_START_2ND, bootmap_size);
-#endif
-
         /*
          * Find the highest page frame number we have available
          */
@@ -306,10 +294,10 @@ void __init setup_arch(char **cmdline_p)
          */
         max_low_pfn = max_pfn;
 
-        /*
+        /*
          * Partially used pages are not usable - thus
          * we are rounding upwards:
-         */
+         */
         start_pfn = PFN_UP(__pa(_end));
 
         /*
@@ -360,12 +348,12 @@ void __init setup_arch(char **cmdline_p)
         reserve_bootmem_node(NODE_DATA(0), __MEMORY_START, PAGE_SIZE);
 
 #ifdef CONFIG_BLK_DEV_INITRD
-        ROOT_DEV = MKDEV(RAMDISK_MAJOR, 0);
-        if (&__rd_start != &__rd_end) {
+        ROOT_DEV = MKDEV(RAMDISK_MAJOR, 0);
+        if (&__rd_start != &__rd_end) {
                 LOADER_TYPE = 1;
                 INITRD_START = PHYSADDR((unsigned long)&__rd_start) - __MEMORY_START;
                 INITRD_SIZE = (unsigned long)&__rd_end - (unsigned long)&__rd_start;
-        }
+        }
 
         if (LOADER_TYPE && INITRD_START) {
                 if (INITRD_START + INITRD_SIZE <= (max_low_pfn << PAGE_SHIFT)) {
diff --git a/arch/sh/kernel/smp.c b/arch/sh/kernel/smp.c
index 5ecefc02896a..59e49b18252c 100644
--- a/arch/sh/kernel/smp.c
+++ b/arch/sh/kernel/smp.c
@@ -112,7 +112,9 @@ int __cpu_up(unsigned int cpu)
 
 int start_secondary(void *unused)
 {
-        unsigned int cpu = smp_processor_id();
+        unsigned int cpu;
+
+        cpu = smp_processor_id();
 
         atomic_inc(&init_mm.mm_count);
         current->active_mm = &init_mm;
@@ -120,6 +122,7 @@ int start_secondary(void *unused)
         smp_store_cpu_info(cpu);
 
         __smp_slave_init(cpu);
+        preempt_disable();
         per_cpu_trap_init();
         
         atomic_inc(&cpus_booted);