diff options
Diffstat (limited to 'include/linux/padata.h')
| -rw-r--r-- | include/linux/padata.h | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/include/linux/padata.h b/include/linux/padata.h new file mode 100644 index 000000000000..51611da9c498 --- /dev/null +++ b/include/linux/padata.h | |||
| @@ -0,0 +1,88 @@ | |||
| 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 | ||