1 #include <linux/list.h>
2 #include <linux/kernel.h>
3
4 #include "kvm/kvm.h"
5 #include "kvm/util-init.h"
6
7 #define PRIORITY_LISTS 10
8
9 static struct hlist_head init_lists[PRIORITY_LISTS];
10 static struct hlist_head exit_lists[PRIORITY_LISTS];
11
init_list_add(struct init_item * t,int (* init)(struct kvm *),int priority,const char * name)12 int init_list_add(struct init_item *t, int (*init)(struct kvm *),
13 int priority, const char *name)
14 {
15 t->init = init;
16 t->fn_name = name;
17 hlist_add_head(&t->n, &init_lists[priority]);
18
19 return 0;
20 }
21
exit_list_add(struct init_item * t,int (* init)(struct kvm *),int priority,const char * name)22 int exit_list_add(struct init_item *t, int (*init)(struct kvm *),
23 int priority, const char *name)
24 {
25 t->init = init;
26 t->fn_name = name;
27 hlist_add_head(&t->n, &exit_lists[priority]);
28
29 return 0;
30 }
31
init_list__init(struct kvm * kvm)32 int init_list__init(struct kvm *kvm)
33 {
34 unsigned int i;
35 int r = 0;
36 struct init_item *t;
37
38 for (i = 0; i < ARRAY_SIZE(init_lists); i++)
39 hlist_for_each_entry(t, &init_lists[i], n) {
40 r = t->init(kvm);
41 if (r < 0) {
42 pr_warning("Failed init: %s\n", t->fn_name);
43 goto fail;
44 }
45 }
46
47 fail:
48 return r;
49 }
50
init_list__exit(struct kvm * kvm)51 int init_list__exit(struct kvm *kvm)
52 {
53 int i;
54 int r = 0;
55 struct init_item *t;
56
57 for (i = ARRAY_SIZE(exit_lists) - 1; i >= 0; i--)
58 hlist_for_each_entry(t, &exit_lists[i], n) {
59 r = t->init(kvm);
60 if (r < 0) {
61 pr_warning("%s failed.\n", t->fn_name);
62 goto fail;
63 }
64 }
65 fail:
66 return r;
67 }
68