Commit | Line | Data |
---|---|---|
16295bec SK |
1 | /* |
2 | * padata.h - header for the padata parallelization interface | |
3 | * | |
4 | * Copyright (C) 2008, 2009 secunet Security Networks AG | |
5 | * Copyright (C) 2008, 2009 Steffen Klassert <steffen.klassert@secunet.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms and conditions of the GNU General Public License, | |
9 | * version 2, as published by the Free Software Foundation. | |
10 | * | |
11 | * This program is distributed in the hope it will be useful, but WITHOUT | |
12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
14 | * more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License along with | |
17 | * this program; if not, write to the Free Software Foundation, Inc., | |
18 | * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
19 | */ | |
20 | ||
21 | #ifndef PADATA_H | |
22 | #define PADATA_H | |
23 | ||
24 | #include <linux/workqueue.h> | |
25 | #include <linux/spinlock.h> | |
26 | #include <linux/list.h> | |
27 | ||
28 | struct padata_priv { | |
29 | struct list_head list; | |
30 | struct parallel_data *pd; | |
31 | int cb_cpu; | |
32 | int seq_nr; | |
33 | int info; | |
34 | void (*parallel)(struct padata_priv *padata); | |
35 | void (*serial)(struct padata_priv *padata); | |
36 | }; | |
37 | ||
38 | struct padata_list { | |
39 | struct list_head list; | |
40 | spinlock_t lock; | |
41 | }; | |
42 | ||
43 | struct padata_queue { | |
44 | struct padata_list parallel; | |
45 | struct padata_list reorder; | |
46 | struct padata_list serial; | |
47 | struct work_struct pwork; | |
48 | struct work_struct swork; | |
49 | struct parallel_data *pd; | |
50 | atomic_t num_obj; | |
51 | int cpu_index; | |
52 | }; | |
53 | ||
54 | struct parallel_data { | |
55 | struct padata_instance *pinst; | |
56 | struct padata_queue *queue; | |
57 | atomic_t seq_nr; | |
58 | atomic_t reorder_objects; | |
59 | atomic_t refcnt; | |
60 | unsigned int max_seq_nr; | |
61 | cpumask_var_t cpumask; | |
62 | spinlock_t lock; | |
63 | }; | |
64 | ||
65 | struct padata_instance { | |
66 | struct notifier_block cpu_notifier; | |
67 | struct workqueue_struct *wq; | |
68 | struct parallel_data *pd; | |
69 | cpumask_var_t cpumask; | |
70 | struct mutex lock; | |
71 | u8 flags; | |
72 | #define PADATA_INIT 1 | |
73 | #define PADATA_RESET 2 | |
74 | }; | |
75 | ||
76 | extern struct padata_instance *padata_alloc(const struct cpumask *cpumask, | |
77 | struct workqueue_struct *wq); | |
78 | extern void padata_free(struct padata_instance *pinst); | |
79 | extern int padata_do_parallel(struct padata_instance *pinst, | |
80 | struct padata_priv *padata, int cb_cpu); | |
81 | extern void padata_do_serial(struct padata_priv *padata); | |
82 | extern int padata_set_cpumask(struct padata_instance *pinst, | |
83 | cpumask_var_t cpumask); | |
84 | extern int padata_add_cpu(struct padata_instance *pinst, int cpu); | |
85 | extern int padata_remove_cpu(struct padata_instance *pinst, int cpu); | |
86 | extern void padata_start(struct padata_instance *pinst); | |
87 | extern void padata_stop(struct padata_instance *pinst); | |
88 | #endif |