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 | |||
