diff options
Diffstat (limited to '9/platforms/android-18/arch-mips/usr/include/linux/elevator.h')
-rw-r--r-- | 9/platforms/android-18/arch-mips/usr/include/linux/elevator.h | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/9/platforms/android-18/arch-mips/usr/include/linux/elevator.h b/9/platforms/android-18/arch-mips/usr/include/linux/elevator.h new file mode 100644 index 0000000..2e79ce9 --- /dev/null +++ b/9/platforms/android-18/arch-mips/usr/include/linux/elevator.h @@ -0,0 +1,109 @@ +/**************************************************************************** + **************************************************************************** + *** + *** This header was automatically generated from a Linux kernel header + *** of the same name, to make information necessary for userspace to + *** call into the kernel available to libc. It contains only constants, + *** structures, and macros generated from the original header, and thus, + *** contains no copyrightable information. + *** + **************************************************************************** + ****************************************************************************/ +#ifndef _LINUX_ELEVATOR_H +#define _LINUX_ELEVATOR_H + +typedef int (elevator_merge_fn) (request_queue_t *, struct request **, + struct bio *); + +typedef void (elevator_merge_req_fn) (request_queue_t *, struct request *, struct request *); + +typedef void (elevator_merged_fn) (request_queue_t *, struct request *); + +typedef int (elevator_dispatch_fn) (request_queue_t *, int); + +typedef void (elevator_add_req_fn) (request_queue_t *, struct request *); +typedef int (elevator_queue_empty_fn) (request_queue_t *); +typedef struct request *(elevator_request_list_fn) (request_queue_t *, struct request *); +typedef void (elevator_completed_req_fn) (request_queue_t *, struct request *); +typedef int (elevator_may_queue_fn) (request_queue_t *, int, struct bio *); + +typedef int (elevator_set_req_fn) (request_queue_t *, struct request *, struct bio *, gfp_t); +typedef void (elevator_put_req_fn) (request_queue_t *, struct request *); +typedef void (elevator_activate_req_fn) (request_queue_t *, struct request *); +typedef void (elevator_deactivate_req_fn) (request_queue_t *, struct request *); + +typedef void *(elevator_init_fn) (request_queue_t *, elevator_t *); +typedef void (elevator_exit_fn) (elevator_t *); + +struct elevator_ops +{ + elevator_merge_fn *elevator_merge_fn; + elevator_merged_fn *elevator_merged_fn; + elevator_merge_req_fn *elevator_merge_req_fn; + + elevator_dispatch_fn *elevator_dispatch_fn; + elevator_add_req_fn *elevator_add_req_fn; + elevator_activate_req_fn *elevator_activate_req_fn; + elevator_deactivate_req_fn *elevator_deactivate_req_fn; + + elevator_queue_empty_fn *elevator_queue_empty_fn; + elevator_completed_req_fn *elevator_completed_req_fn; + + elevator_request_list_fn *elevator_former_req_fn; + elevator_request_list_fn *elevator_latter_req_fn; + + elevator_set_req_fn *elevator_set_req_fn; + elevator_put_req_fn *elevator_put_req_fn; + + elevator_may_queue_fn *elevator_may_queue_fn; + + elevator_init_fn *elevator_init_fn; + elevator_exit_fn *elevator_exit_fn; + void (*trim)(struct io_context *); +}; + +#define ELV_NAME_MAX (16) + +struct elv_fs_entry { + struct attribute attr; + ssize_t (*show)(elevator_t *, char *); + ssize_t (*store)(elevator_t *, const char *, size_t); +}; + +struct elevator_type +{ + struct list_head list; + struct elevator_ops ops; + struct elevator_type *elevator_type; + struct elv_fs_entry *elevator_attrs; + char elevator_name[ELV_NAME_MAX]; + struct module *elevator_owner; +}; + +struct elevator_queue +{ + struct elevator_ops *ops; + void *elevator_data; + struct kobject kobj; + struct elevator_type *elevator_type; + struct mutex sysfs_lock; +}; + +#define ELEVATOR_NO_MERGE 0 +#define ELEVATOR_FRONT_MERGE 1 +#define ELEVATOR_BACK_MERGE 2 + +#define ELEVATOR_INSERT_FRONT 1 +#define ELEVATOR_INSERT_BACK 2 +#define ELEVATOR_INSERT_SORT 3 +#define ELEVATOR_INSERT_REQUEUE 4 + +enum { + ELV_MQUEUE_MAY, + ELV_MQUEUE_NO, + ELV_MQUEUE_MUST, +}; + +#define rq_end_sector(rq) ((rq)->sector + (rq)->nr_sectors) + +#endif |