4 files changed, 6 insertions, 29 deletions

diff --git a/arch/hexagon/kernel/process.c b/arch/hexagon/kernel/process.c
index 7fcc636b6238..0a0dd5c05b46 100644
--- a/arch/hexagon/kernel/process.c
+++ b/arch/hexagon/kernel/process.c
@@ -52,28 +52,11 @@ void start_thread(struct pt_regs *regs, unsigned long pc, unsigned long sp)
  *  If hardware or VM offer wait termination even though interrupts
  *  are disabled.
  */
-static void default_idle(void)
+void arch_cpu_idle(void)
 {
         __vmwait();
-}
-
-void (*idle_sleep)(void) = default_idle;
-
-void cpu_idle(void)
-{
-        while (1) {
-                tick_nohz_idle_enter();
-                local_irq_disable();
-                while (!need_resched()) {
-                        idle_sleep();
-                        /*  interrupts wake us up, but aren't serviced  */
-                        local_irq_enable();     /* service interrupt   */
-                        local_irq_disable();
-                }
-                local_irq_enable();
-                tick_nohz_idle_exit();
-                schedule();
-        }
+        /*  interrupts wake us up, but irqs are still disabled */
+        local_irq_enable();
 }
 
 /*
diff --git a/arch/hexagon/kernel/smp.c b/arch/hexagon/kernel/smp.c
index 8e095dffd070..0e364ca43198 100644
--- a/arch/hexagon/kernel/smp.c
+++ b/arch/hexagon/kernel/smp.c
@@ -184,7 +184,7 @@ void __cpuinit start_secondary(void)
 
         local_irq_enable();
 
-        cpu_idle();
+        cpu_startup_entry(CPUHP_ONLINE);
 }
 
 
diff --git a/arch/hexagon/kernel/traps.c b/arch/hexagon/kernel/traps.c
index aaf53f883710..7858663352b9 100644
--- a/arch/hexagon/kernel/traps.c
+++ b/arch/hexagon/kernel/traps.c
@@ -195,14 +195,6 @@ void show_stack(struct task_struct *task, unsigned long *fp)
         do_show_stack(task, fp, 0);
 }
 
-void dump_stack(void)
-{
-        unsigned long *fp;
-        asm("%0 = r30" : "=r" (fp));
-        show_stack(current, fp);
-}
-EXPORT_SYMBOL(dump_stack);
-
 int die(const char *str, struct pt_regs *regs, long err)
 {
         static struct {
diff --git a/arch/hexagon/kernel/vm_events.c b/arch/hexagon/kernel/vm_events.c
index 3e4453091889..741aaa917cda 100644
--- a/arch/hexagon/kernel/vm_events.c
+++ b/arch/hexagon/kernel/vm_events.c
@@ -33,6 +33,8 @@
  */
 void show_regs(struct pt_regs *regs)
 {
+        show_regs_print_info(KERN_EMERG);
+
         printk(KERN_EMERG "restart_r0: \t0x%08lx   syscall_nr: %ld\n",
                regs->restart_r0, regs->syscall_nr);
         printk(KERN_EMERG "preds: \t\t0x%08lx\n", regs->preds);