Add the rt linux 4.1.3-rt3 as base
[kvmfornfv.git] / kernel / arch / mips / kernel / smp-up.c
1 /*
2  * This file is subject to the terms and conditions of the GNU General Public
3  * License.  See the file "COPYING" in the main directory of this archive
4  * for more details.
5  *
6  * Copyright (C) 2006, 07 by Ralf Baechle (ralf@linux-mips.org)
7  *
8  * Symmetric Uniprocessor (TM) Support
9  */
10 #include <linux/kernel.h>
11 #include <linux/sched.h>
12
13 /*
14  * Send inter-processor interrupt
15  */
16 static void up_send_ipi_single(int cpu, unsigned int action)
17 {
18         panic(KERN_ERR "%s called", __func__);
19 }
20
21 static inline void up_send_ipi_mask(const struct cpumask *mask,
22                                     unsigned int action)
23 {
24         panic(KERN_ERR "%s called", __func__);
25 }
26
27 /*
28  *  After we've done initial boot, this function is called to allow the
29  *  board code to clean up state, if needed
30  */
31 static void up_init_secondary(void)
32 {
33 }
34
35 static void up_smp_finish(void)
36 {
37 }
38
39 /*
40  * Firmware CPU startup hook
41  */
42 static void up_boot_secondary(int cpu, struct task_struct *idle)
43 {
44 }
45
46 static void __init up_smp_setup(void)
47 {
48 }
49
50 static void __init up_prepare_cpus(unsigned int max_cpus)
51 {
52 }
53
54 #ifdef CONFIG_HOTPLUG_CPU
55 static int up_cpu_disable(void)
56 {
57         return -ENOSYS;
58 }
59
60 static void up_cpu_die(unsigned int cpu)
61 {
62         BUG();
63 }
64 #endif
65
66 struct plat_smp_ops up_smp_ops = {
67         .send_ipi_single        = up_send_ipi_single,
68         .send_ipi_mask          = up_send_ipi_mask,
69         .init_secondary         = up_init_secondary,
70         .smp_finish             = up_smp_finish,
71         .boot_secondary         = up_boot_secondary,
72         .smp_setup              = up_smp_setup,
73         .prepare_cpus           = up_prepare_cpus,
74 #ifdef CONFIG_HOTPLUG_CPU
75         .cpu_disable            = up_cpu_disable,
76         .cpu_die                = up_cpu_die,
77 #endif
78 };