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-rw-r--r--kernel/power/smp.c62
1 files changed, 0 insertions, 62 deletions
diff --git a/kernel/power/smp.c b/kernel/power/smp.c
deleted file mode 100644
index 5957312b2d68..000000000000
--- a/kernel/power/smp.c
+++ /dev/null
@@ -1,62 +0,0 @@
1/*
2 * drivers/power/smp.c - Functions for stopping other CPUs.
3 *
4 * Copyright 2004 Pavel Machek <pavel@suse.cz>
5 * Copyright (C) 2002-2003 Nigel Cunningham <ncunningham@clear.net.nz>
6 *
7 * This file is released under the GPLv2.
8 */
9
10#undef DEBUG
11
12#include <linux/smp_lock.h>
13#include <linux/interrupt.h>
14#include <linux/suspend.h>
15#include <linux/module.h>
16#include <linux/cpu.h>
17#include <asm/atomic.h>
18#include <asm/tlbflush.h>
19
20/* This is protected by pm_sem semaphore */
21static cpumask_t frozen_cpus;
22
23void disable_nonboot_cpus(void)
24{
25 int cpu, error;
26
27 error = 0;
28 cpus_clear(frozen_cpus);
29 printk("Freezing cpus ...\n");
30 for_each_online_cpu(cpu) {
31 if (cpu == 0)
32 continue;
33 error = cpu_down(cpu);
34 if (!error) {
35 cpu_set(cpu, frozen_cpus);
36 printk("CPU%d is down\n", cpu);
37 continue;
38 }
39 printk("Error taking cpu %d down: %d\n", cpu, error);
40 }
41 BUG_ON(raw_smp_processor_id() != 0);
42 if (error)
43 panic("cpus not sleeping");
44}
45
46void enable_nonboot_cpus(void)
47{
48 int cpu, error;
49
50 printk("Thawing cpus ...\n");
51 for_each_cpu_mask(cpu, frozen_cpus) {
52 error = cpu_up(cpu);
53 if (!error) {
54 printk("CPU%d is up\n", cpu);
55 continue;
56 }
57 printk("Error taking cpu %d up: %d\n", cpu, error);
58 panic("Not enough cpus");
59 }
60 cpus_clear(frozen_cpus);
61}
62