5 files changed, 45 insertions, 24 deletions

diff --git a/arch/sparc/kernel/process.c b/arch/sparc/kernel/process.c
index 143fe2f3c1c4..2c216ffeea90 100644
--- a/arch/sparc/kernel/process.c
+++ b/arch/sparc/kernel/process.c
@@ -83,9 +83,6 @@ void default_idle(void)
  */
 void cpu_idle(void)
 {
-        if (current->pid != 0)
-                goto out;
-
         /* endless idle loop with no priority at all */
         for (;;) {
                 if (ARCH_SUN4C_SUN4) {
@@ -126,8 +123,6 @@ void cpu_idle(void)
                 schedule();
                 check_pgt_cache();
         }
-out:
-        return;
 }
 
 #else
@@ -333,6 +328,17 @@ void show_stack(struct task_struct *tsk, unsigned long *_ksp)
         printk("\n");
 }
 
+void dump_stack(void)
+{
+        unsigned long *ksp;
+
+        __asm__ __volatile__("mov       %%fp, %0"
+                             : "=r" (ksp));
+        show_stack(current, ksp);
+}
+
+EXPORT_SYMBOL(dump_stack);
+
 /*
  * Note: sparc64 has a pretty intricated thread_saved_pc, check it out.
  */
diff --git a/arch/sparc/kernel/ptrace.c b/arch/sparc/kernel/ptrace.c
index c4f93bd2daf2..475c4c13462c 100644
--- a/arch/sparc/kernel/ptrace.c
+++ b/arch/sparc/kernel/ptrace.c
@@ -18,6 +18,7 @@
 #include <linux/smp.h>
 #include <linux/smp_lock.h>
 #include <linux/security.h>
+#include <linux/signal.h>
 
 #include <asm/pgtable.h>
 #include <asm/system.h>
@@ -526,7 +527,7 @@ asmlinkage void do_ptrace(struct pt_regs *regs)
                 addr = 1;
 
         case PTRACE_CONT: { /* restart after signal. */
-                if (data > _NSIG) {
+                if (!valid_signal(data)) {
                         pt_error_return(regs, EIO);
                         goto out_tsk;
                 }
diff --git a/arch/sparc/kernel/sparc_ksyms.c b/arch/sparc/kernel/sparc_ksyms.c
index f91b0e8d0dc8..1bd430d0ca06 100644
--- a/arch/sparc/kernel/sparc_ksyms.c
+++ b/arch/sparc/kernel/sparc_ksyms.c
@@ -20,6 +20,7 @@
 #include <linux/in6.h>
 #include <linux/spinlock.h>
 #include <linux/mm.h>
+#include <linux/syscalls.h>
 #ifdef CONFIG_PCI
 #include <linux/pci.h>
 #endif
@@ -89,6 +90,9 @@ extern void ___atomic24_sub(void);
 extern void ___set_bit(void);
 extern void ___clear_bit(void);
 extern void ___change_bit(void);
+extern void ___rw_read_enter(void);
+extern void ___rw_read_exit(void);
+extern void ___rw_write_enter(void);
 
 /* Alias functions whose names begin with "." and export the aliases.
  * The module references will be fixed up by module_frob_arch_sections.
@@ -121,9 +125,9 @@ EXPORT_SYMBOL(_do_write_unlock);
 #endif
 #else
 // XXX find what uses (or used) these.
-// EXPORT_SYMBOL_PRIVATE(_rw_read_enter);
-// EXPORT_SYMBOL_PRIVATE(_rw_read_exit);
-// EXPORT_SYMBOL_PRIVATE(_rw_write_enter);
+EXPORT_SYMBOL(___rw_read_enter);
+EXPORT_SYMBOL(___rw_read_exit);
+EXPORT_SYMBOL(___rw_write_enter);
 #endif
 /* semaphores */
 EXPORT_SYMBOL(__up);
@@ -144,6 +148,9 @@ EXPORT_SYMBOL(___set_bit);
 EXPORT_SYMBOL(___clear_bit);
 EXPORT_SYMBOL(___change_bit);
 
+/* Per-CPU information table */
+EXPORT_PER_CPU_SYMBOL(__cpu_data);
+
 #ifdef CONFIG_SMP
 /* IRQ implementation. */
 EXPORT_SYMBOL(synchronize_irq);
@@ -151,6 +158,10 @@ EXPORT_SYMBOL(synchronize_irq);
 /* Misc SMP information */
 EXPORT_SYMBOL(__cpu_number_map);
 EXPORT_SYMBOL(__cpu_logical_map);
+
+/* CPU online map and active count. */
+EXPORT_SYMBOL(cpu_online_map);
+EXPORT_SYMBOL(phys_cpu_present_map);
 #endif
 
 EXPORT_SYMBOL(__udelay);
@@ -332,3 +343,6 @@ EXPORT_SYMBOL(do_BUG);
 
 /* Sun Power Management Idle Handler */
 EXPORT_SYMBOL(pm_idle);
+
+/* Binfmt_misc needs this */
+EXPORT_SYMBOL(sys_close);
diff --git a/arch/sparc/prom/memory.c b/arch/sparc/prom/memory.c
index 46aa51afec14..c20e5309f8aa 100644
--- a/arch/sparc/prom/memory.c
+++ b/arch/sparc/prom/memory.c
@@ -47,9 +47,9 @@ prom_sortmemlist(struct linux_mlist_v0 *thislist)
         char *tmpaddr;
         char *lowest;
 
-        for(i=0; thislist[i].theres_more != 0; i++) {
+        for(i=0; thislist[i].theres_more; i++) {
                 lowest = thislist[i].start_adr;
-                for(mitr = i+1; thislist[mitr-1].theres_more != 0; mitr++)
+                for(mitr = i+1; thislist[mitr-1].theres_more; mitr++)
                         if(thislist[mitr].start_adr < lowest) {
                                 lowest = thislist[mitr].start_adr;
                                 swapi = mitr;
@@ -85,7 +85,7 @@ void __init prom_meminit(void)
                         prom_phys_total[iter].num_bytes = mptr->num_bytes;
                         prom_phys_total[iter].theres_more = &prom_phys_total[iter+1];
                 }
-                prom_phys_total[iter-1].theres_more = 0x0;
+                prom_phys_total[iter-1].theres_more = NULL;
                 /* Second, the total prom taken descriptors. */
                 for(mptr = (*(romvec->pv_v0mem.v0_prommap)), iter=0;
                     mptr; mptr=mptr->theres_more, iter++) {
@@ -93,7 +93,7 @@ void __init prom_meminit(void)
                         prom_prom_taken[iter].num_bytes = mptr->num_bytes;
                         prom_prom_taken[iter].theres_more = &prom_prom_taken[iter+1];
                 }
-                prom_prom_taken[iter-1].theres_more = 0x0;
+                prom_prom_taken[iter-1].theres_more = NULL;
                 /* Last, the available physical descriptors. */
                 for(mptr = (*(romvec->pv_v0mem.v0_available)), iter=0;
                     mptr; mptr=mptr->theres_more, iter++) {
@@ -101,7 +101,7 @@ void __init prom_meminit(void)
                         prom_phys_avail[iter].num_bytes = mptr->num_bytes;
                         prom_phys_avail[iter].theres_more = &prom_phys_avail[iter+1];
                 }
-                prom_phys_avail[iter-1].theres_more = 0x0;
+                prom_phys_avail[iter-1].theres_more = NULL;
                 /* Sort all the lists. */
                 prom_sortmemlist(prom_phys_total);
                 prom_sortmemlist(prom_prom_taken);
@@ -124,7 +124,7 @@ void __init prom_meminit(void)
                         prom_phys_avail[iter].theres_more =
                                 &prom_phys_avail[iter+1];
                 }
-                prom_phys_avail[iter-1].theres_more = 0x0;
+                prom_phys_avail[iter-1].theres_more = NULL;
 
                 num_regs = prom_getproperty(node, "reg",
                                             (char *) prom_reg_memlist,
@@ -138,7 +138,7 @@ void __init prom_meminit(void)
                         prom_phys_total[iter].theres_more =
                                 &prom_phys_total[iter+1];
                 }
-                prom_phys_total[iter-1].theres_more = 0x0;
+                prom_phys_total[iter-1].theres_more = NULL;
 
                 node = prom_getchild(prom_root_node);
                 node = prom_searchsiblings(node, "virtual-memory");
@@ -158,7 +158,7 @@ void __init prom_meminit(void)
                         prom_prom_taken[iter].theres_more =
                                 &prom_prom_taken[iter+1];
                 }
-                prom_prom_taken[iter-1].theres_more = 0x0;
+                prom_prom_taken[iter-1].theres_more = NULL;
 
                 prom_sortmemlist(prom_prom_taken);
 
@@ -182,15 +182,15 @@ void __init prom_meminit(void)
         case PROM_SUN4:
 #ifdef CONFIG_SUN4      
                 /* how simple :) */
-                prom_phys_total[0].start_adr = 0x0;
+                prom_phys_total[0].start_adr = NULL;
                 prom_phys_total[0].num_bytes = *(sun4_romvec->memorysize);
-                prom_phys_total[0].theres_more = 0x0;
-                prom_prom_taken[0].start_adr = 0x0; 
+                prom_phys_total[0].theres_more = NULL;
+                prom_prom_taken[0].start_adr = NULL; 
                 prom_prom_taken[0].num_bytes = 0x0;
-                prom_prom_taken[0].theres_more = 0x0;
-                prom_phys_avail[0].start_adr = 0x0;
+                prom_prom_taken[0].theres_more = NULL;
+                prom_phys_avail[0].start_adr = NULL;
                 prom_phys_avail[0].num_bytes = *(sun4_romvec->memoryavail);
-                prom_phys_avail[0].theres_more = 0x0;
+                prom_phys_avail[0].theres_more = NULL;
 #endif
                 break;
 
diff --git a/arch/sparc/prom/sun4prom.c b/arch/sparc/prom/sun4prom.c
index 69ca735f0d4e..00390a2652aa 100644
--- a/arch/sparc/prom/sun4prom.c
+++ b/arch/sparc/prom/sun4prom.c
@@ -151,7 +151,7 @@ struct linux_romvec * __init sun4_prom_init(void)
          * have more time, we can teach the penguin to say "By your
          * command" or "Activating turbo boost, Michael". :-)
          */
-        sun4_romvec->setLEDs(0x0);
+        sun4_romvec->setLEDs(NULL);
         
         printk("PROMLIB: Old Sun4 boot PROM monitor %s, romvec version %d\n",
                 sun4_romvec->monid,