1 files changed, 0 insertions, 238 deletions
diff --git a/arch/um/kernel/smp.c b/arch/um/kernel/smp.c
deleted file mode 100644
index 5c8c3ea7db7b..000000000000
--- a/arch/um/kernel/smp.c
+++ /dev/null
@@ -1,238 +0,0 @@
-/*
- * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- * Licensed under the GPL
- */
-
-#include <linux/percpu.h>
-#include <asm/pgalloc.h>
-#include <asm/tlb.h>
-
-#ifdef CONFIG_SMP
-
-#include <linux/sched.h>
-#include <linux/module.h>
-#include <linux/threads.h>
-#include <linux/interrupt.h>
-#include <linux/err.h>
-#include <linux/hardirq.h>
-#include <asm/smp.h>
-#include <asm/processor.h>
-#include <asm/spinlock.h>
-#include <kern.h>
-#include <irq_user.h>
-#include <os.h>
-
-/* Per CPU bogomips and other parameters
- * The only piece used here is the ipi pipe, which is set before SMP is
- * started and never changed.
- */
-struct cpuinfo_um cpu_data[NR_CPUS];
-
-/* A statistic, can be a little off */
-int num_reschedules_sent = 0;
-
-/* Not changed after boot */
-struct task_struct *idle_threads[NR_CPUS];
-
-void smp_send_reschedule(int cpu)
-{
-	os_write_file(cpu_data[cpu].ipi_pipe[1], "R", 1);
-	num_reschedules_sent++;
-}
-
-void smp_send_stop(void)
-{
-	int i;
-
-	printk(KERN_INFO "Stopping all CPUs...");
-	for (i = 0; i < num_online_cpus(); i++) {
-		if (i == current_thread->cpu)
-			continue;
-		os_write_file(cpu_data[i].ipi_pipe[1], "S", 1);
-	}
-	printk(KERN_CONT "done\n");
-}
-
-static cpumask_t smp_commenced_mask = CPU_MASK_NONE;
-static cpumask_t cpu_callin_map = CPU_MASK_NONE;
-
-static int idle_proc(void *cpup)
-{
-	int cpu = (int) cpup, err;
-
-	err = os_pipe(cpu_data[cpu].ipi_pipe, 1, 1);
-	if (err < 0)
-		panic("CPU#%d failed to create IPI pipe, err = %d", cpu, -err);
-
-	os_set_fd_async(cpu_data[cpu].ipi_pipe[0]);
-
-	wmb();
-	if (cpu_test_and_set(cpu, cpu_callin_map)) {
-		printk(KERN_ERR "huh, CPU#%d already present??\n", cpu);
-		BUG();
-	}
-
-	while (!cpu_isset(cpu, smp_commenced_mask))
-		cpu_relax();
-
-	notify_cpu_starting(cpu);
-	set_cpu_online(cpu, true);
-	default_idle();
-	return 0;
-}
-
-static struct task_struct *idle_thread(int cpu)
-{
-	struct task_struct *new_task;
-
-	current->thread.request.u.thread.proc = idle_proc;
-	current->thread.request.u.thread.arg = (void *) cpu;
-	new_task = fork_idle(cpu);
-	if (IS_ERR(new_task))
-		panic("copy_process failed in idle_thread, error = %ld",
-		      PTR_ERR(new_task));
-
-	cpu_tasks[cpu] = ((struct cpu_task)
-		          { .pid = 	new_task->thread.mode.tt.extern_pid,
-			    .task = 	new_task } );
-	idle_threads[cpu] = new_task;
-	panic("skas mode doesn't support SMP");
-	return new_task;
-}
-
-void smp_prepare_cpus(unsigned int maxcpus)
-{
-	struct task_struct *idle;
-	unsigned long waittime;
-	int err, cpu, me = smp_processor_id();
-	int i;
-
-	for (i = 0; i < ncpus; ++i)
-		set_cpu_possible(i, true);
-
-	set_cpu_online(me, true);
-	cpu_set(me, cpu_callin_map);
-
-	err = os_pipe(cpu_data[me].ipi_pipe, 1, 1);
-	if (err < 0)
-		panic("CPU#0 failed to create IPI pipe, errno = %d", -err);
-
-	os_set_fd_async(cpu_data[me].ipi_pipe[0]);
-
-	for (cpu = 1; cpu < ncpus; cpu++) {
-		printk(KERN_INFO "Booting processor %d...\n", cpu);
-
-		idle = idle_thread(cpu);
-
-		init_idle(idle, cpu);
-
-		waittime = 200000000;
-		while (waittime-- && !cpu_isset(cpu, cpu_callin_map))
-			cpu_relax();
-
-		printk(KERN_INFO "%s\n",
-		       cpu_isset(cpu, cpu_calling_map) ? "done" : "failed");
-	}
-}
-
-void smp_prepare_boot_cpu(void)
-{
-	set_cpu_online(smp_processor_id(), true);
-}
-
-int __cpu_up(unsigned int cpu, struct task_struct *tidle)
-{
-	cpu_set(cpu, smp_commenced_mask);
-	while (!cpu_online(cpu))
-		mb();
-	return 0;
-}
-
-int setup_profiling_timer(unsigned int multiplier)
-{
-	printk(KERN_INFO "setup_profiling_timer\n");
-	return 0;
-}
-
-void smp_call_function_slave(int cpu);
-
-void IPI_handler(int cpu)
-{
-	unsigned char c;
-	int fd;
-
-	fd = cpu_data[cpu].ipi_pipe[0];
-	while (os_read_file(fd, &c, 1) == 1) {
-		switch (c) {
-		case 'C':
-			smp_call_function_slave(cpu);
-			break;
-
-		case 'R':
-			scheduler_ipi();
-			break;
-
-		case 'S':
-			printk(KERN_INFO "CPU#%d stopping\n", cpu);
-			while (1)
-				pause();
-			break;
-
-		default:
-			printk(KERN_ERR "CPU#%d received unknown IPI [%c]!\n",
-			       cpu, c);
-			break;
-		}
-	}
-}
-
-int hard_smp_processor_id(void)
-{
-	return pid_to_processor_id(os_getpid());
-}
-
-static DEFINE_SPINLOCK(call_lock);
-static atomic_t scf_started;
-static atomic_t scf_finished;
-static void (*func)(void *info);
-static void *info;
-
-void smp_call_function_slave(int cpu)
-{
-	atomic_inc(&scf_started);
-	(*func)(info);
-	atomic_inc(&scf_finished);
-}
-
-int smp_call_function(void (*_func)(void *info), void *_info, int wait)
-{
-	int cpus = num_online_cpus() - 1;
-	int i;
-
-	if (!cpus)
-		return 0;
-
-	/* Can deadlock when called with interrupts disabled */
-	WARN_ON(irqs_disabled());
-
-	spin_lock_bh(&call_lock);
-	atomic_set(&scf_started, 0);
-	atomic_set(&scf_finished, 0);
-	func = _func;
-	info = _info;
-
-	for_each_online_cpu(i)
-		os_write_file(cpu_data[i].ipi_pipe[1], "C", 1);
-
-	while (atomic_read(&scf_started) != cpus)
-		barrier();
-
-	if (wait)
-		while (atomic_read(&scf_finished) != cpus)
-			barrier();
-
-	spin_unlock_bh(&call_lock);
-	return 0;
-}
-
-#endif