1 files changed, 5 insertions, 146 deletions

diff --git a/arch/sparc/kernel/process_32.c b/arch/sparc/kernel/process_32.c
index efa07542e85f..cb36e82dcd5d 100644
--- a/arch/sparc/kernel/process_32.c
+++ b/arch/sparc/kernel/process_32.c
@@ -65,84 +65,25 @@ extern void fpsave(unsigned long *, unsigned long *, void *, unsigned long *);
 struct task_struct *last_task_used_math = NULL;
 struct thread_info *current_set[NR_CPUS];
 
-#ifndef CONFIG_SMP
-
-#define SUN4C_FAULT_HIGH 100
-
 /*
  * the idle loop on a Sparc... ;)
  */
 void cpu_idle(void)
 {
-	/* endless idle loop with no priority at all */
-	for (;;) {
-		if (ARCH_SUN4C) {
-			static int count = HZ;
-			static unsigned long last_jiffies;
-			static unsigned long last_faults;
-			static unsigned long fps;
-			unsigned long now;
-			unsigned long faults;
-
-			extern unsigned long sun4c_kernel_faults;
-			extern void sun4c_grow_kernel_ring(void);
-
-			local_irq_disable();
-			now = jiffies;
-			count -= (now - last_jiffies);
-			last_jiffies = now;
-			if (count < 0) {
-				count += HZ;
-				faults = sun4c_kernel_faults;
-				fps = (fps + (faults - last_faults)) >> 1;
-				last_faults = faults;
-#if 0
-				printk("kernel faults / second = %ld\n", fps);
-#endif
-				if (fps >= SUN4C_FAULT_HIGH) {
-					sun4c_grow_kernel_ring();
-				}
-			}
-			local_irq_enable();
-		}
-
-		if (pm_idle) {
-			while (!need_resched())
-				(*pm_idle)();
-		} else {
-			while (!need_resched())
-				cpu_relax();
-		}
-		schedule_preempt_disabled();
-		check_pgt_cache();
-	}
-}
+	set_thread_flag(TIF_POLLING_NRFLAG);
 
-#else
-
-/* This is being executed in task 0 'user space'. */
-void cpu_idle(void)
-{
-        set_thread_flag(TIF_POLLING_NRFLAG);
 	/* endless idle loop with no priority at all */
-	while(1) {
-#ifdef CONFIG_SPARC_LEON
-		if (pm_idle) {
-			while (!need_resched())
+	for (;;) {
+		while (!need_resched()) {
+			if (pm_idle)
 				(*pm_idle)();
-		} else
-#endif
-		{
-			while (!need_resched())
+			else
 				cpu_relax();
 		}
 		schedule_preempt_disabled();
-		check_pgt_cache();
 	}
 }
 
-#endif
-
 /* XXX cli/sti -> local_irq_xxx here, check this works once SMP is fixed. */
 void machine_halt(void)
 {
@@ -179,88 +120,6 @@ void machine_power_off(void)
 	machine_halt();
 }
 
-#if 0
-
-static DEFINE_SPINLOCK(sparc_backtrace_lock);
-
-void __show_backtrace(unsigned long fp)
-{
-	struct reg_window32 *rw;
-	unsigned long flags;
-	int cpu = smp_processor_id();
-
-	spin_lock_irqsave(&sparc_backtrace_lock, flags);
-
-	rw = (struct reg_window32 *)fp;
-        while(rw && (((unsigned long) rw) >= PAGE_OFFSET) &&
-            !(((unsigned long) rw) & 0x7)) {
-		printk("CPU[%d]: ARGS[%08lx,%08lx,%08lx,%08lx,%08lx,%08lx] "
-		       "FP[%08lx] CALLER[%08lx]: ", cpu,
-		       rw->ins[0], rw->ins[1], rw->ins[2], rw->ins[3],
-		       rw->ins[4], rw->ins[5],
-		       rw->ins[6],
-		       rw->ins[7]);
-		printk("%pS\n", (void *) rw->ins[7]);
-		rw = (struct reg_window32 *) rw->ins[6];
-	}
-	spin_unlock_irqrestore(&sparc_backtrace_lock, flags);
-}
-
-#define __SAVE __asm__ __volatile__("save %sp, -0x40, %sp\n\t")
-#define __RESTORE __asm__ __volatile__("restore %g0, %g0, %g0\n\t")
-#define __GET_FP(fp) __asm__ __volatile__("mov %%i6, %0" : "=r" (fp))
-
-void show_backtrace(void)
-{
-	unsigned long fp;
-
-	__SAVE; __SAVE; __SAVE; __SAVE;
-	__SAVE; __SAVE; __SAVE; __SAVE;
-	__RESTORE; __RESTORE; __RESTORE; __RESTORE;
-	__RESTORE; __RESTORE; __RESTORE; __RESTORE;
-
-	__GET_FP(fp);
-
-	__show_backtrace(fp);
-}
-
-#ifdef CONFIG_SMP
-void smp_show_backtrace_all_cpus(void)
-{
-	xc0((smpfunc_t) show_backtrace);
-	show_backtrace();
-}
-#endif
-
-void show_stackframe(struct sparc_stackf *sf)
-{
-	unsigned long size;
-	unsigned long *stk;
-	int i;
-
-	printk("l0: %08lx l1: %08lx l2: %08lx l3: %08lx "
-	       "l4: %08lx l5: %08lx l6: %08lx l7: %08lx\n",
-	       sf->locals[0], sf->locals[1], sf->locals[2], sf->locals[3],
-	       sf->locals[4], sf->locals[5], sf->locals[6], sf->locals[7]);
-	printk("i0: %08lx i1: %08lx i2: %08lx i3: %08lx "
-	       "i4: %08lx i5: %08lx fp: %08lx i7: %08lx\n",
-	       sf->ins[0], sf->ins[1], sf->ins[2], sf->ins[3],
-	       sf->ins[4], sf->ins[5], (unsigned long)sf->fp, sf->callers_pc);
-	printk("sp: %08lx x0: %08lx x1: %08lx x2: %08lx "
-	       "x3: %08lx x4: %08lx x5: %08lx xx: %08lx\n",
-	       (unsigned long)sf->structptr, sf->xargs[0], sf->xargs[1],
-	       sf->xargs[2], sf->xargs[3], sf->xargs[4], sf->xargs[5],
-	       sf->xxargs[0]);
-	size = ((unsigned long)sf->fp) - ((unsigned long)sf);
-	size -= STACKFRAME_SZ;
-	stk = (unsigned long *)((unsigned long)sf + STACKFRAME_SZ);
-	i = 0;
-	do {
-		printk("s%d: %08lx\n", i++, *stk++);
-	} while ((size -= sizeof(unsigned long)));
-}
-#endif
-
 void show_regs(struct pt_regs *r)
 {
 	struct reg_window32 *rw = (struct reg_window32 *) r->u_regs[14];