diff options
Diffstat (limited to 'kernel/power/smp.c')
-rw-r--r-- | kernel/power/smp.c | 62 |
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 */ | ||
21 | static cpumask_t frozen_cpus; | ||
22 | |||
23 | void 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 | |||
46 | void 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 | |||