1 /****************************************************************************
2 ****************************************************************************
3 ***
4 *** This header was automatically generated from a Linux kernel header
5 *** of the same name, to make information necessary for userspace to
6 *** call into the kernel available to libc. It contains only constants,
7 *** structures, and macros generated from the original header, and thus,
8 *** contains no copyrightable information.
9 ***
10 ****************************************************************************
11 ****************************************************************************/
12 #ifndef _LINUX_SUNRPC_SCHED_H_
13 #define _LINUX_SUNRPC_SCHED_H_
15 #include <linux/timer.h>
16 #include <linux/sunrpc/types.h>
17 #include <linux/spinlock.h>
18 #include <linux/wait.h>
19 #include <linux/workqueue.h>
20 #include <linux/sunrpc/xdr.h>
22 struct rpc_procinfo;
23 struct rpc_message {
24 struct rpc_procinfo * rpc_proc;
25 void * rpc_argp;
26 void * rpc_resp;
27 struct rpc_cred * rpc_cred;
28 };
30 struct rpc_call_ops;
31 struct rpc_wait_queue;
32 struct rpc_wait {
33 struct list_head list;
34 struct list_head links;
35 struct rpc_wait_queue * rpc_waitq;
36 };
38 struct rpc_task {
39 #ifdef RPC_DEBUG
40 unsigned long tk_magic;
41 #endif
42 atomic_t tk_count;
43 struct list_head tk_task;
44 struct rpc_clnt * tk_client;
45 struct rpc_rqst * tk_rqstp;
46 int tk_status;
48 struct rpc_message tk_msg;
49 __u8 tk_garb_retry;
50 __u8 tk_cred_retry;
52 unsigned long tk_cookie;
54 void (*tk_timeout_fn)(struct rpc_task *);
55 void (*tk_callback)(struct rpc_task *);
56 void (*tk_action)(struct rpc_task *);
57 const struct rpc_call_ops *tk_ops;
58 void * tk_calldata;
60 struct timer_list tk_timer;
61 unsigned long tk_timeout;
62 unsigned short tk_flags;
63 unsigned char tk_priority : 2;
64 unsigned long tk_runstate;
65 struct workqueue_struct *tk_workqueue;
66 union {
67 struct work_struct tk_work;
68 struct rpc_wait tk_wait;
69 } u;
71 unsigned short tk_timeouts;
72 size_t tk_bytes_sent;
73 unsigned long tk_start;
74 long tk_rtt;
76 #ifdef RPC_DEBUG
77 unsigned short tk_pid;
78 #endif
79 };
80 #define tk_auth tk_client->cl_auth
81 #define tk_xprt tk_client->cl_xprt
83 #define task_for_each(task, pos, head) list_for_each(pos, head) if ((task=list_entry(pos, struct rpc_task, u.tk_wait.list)),1)
85 #define task_for_first(task, head) if (!list_empty(head) && ((task=list_entry((head)->next, struct rpc_task, u.tk_wait.list)),1))
87 #define alltask_for_each(task, pos, head) list_for_each(pos, head) if ((task=list_entry(pos, struct rpc_task, tk_task)),1)
89 typedef void (*rpc_action)(struct rpc_task *);
91 struct rpc_call_ops {
92 void (*rpc_call_prepare)(struct rpc_task *, void *);
93 void (*rpc_call_done)(struct rpc_task *, void *);
94 void (*rpc_release)(void *);
95 };
97 #define RPC_TASK_ASYNC 0x0001
98 #define RPC_TASK_SWAPPER 0x0002
99 #define RPC_TASK_CHILD 0x0008
100 #define RPC_CALL_MAJORSEEN 0x0020
101 #define RPC_TASK_ROOTCREDS 0x0040
102 #define RPC_TASK_DYNAMIC 0x0080
103 #define RPC_TASK_KILLED 0x0100
104 #define RPC_TASK_SOFT 0x0200
105 #define RPC_TASK_NOINTR 0x0400
107 #define RPC_IS_ASYNC(t) ((t)->tk_flags & RPC_TASK_ASYNC)
108 #define RPC_IS_CHILD(t) ((t)->tk_flags & RPC_TASK_CHILD)
109 #define RPC_IS_SWAPPER(t) ((t)->tk_flags & RPC_TASK_SWAPPER)
110 #define RPC_DO_ROOTOVERRIDE(t) ((t)->tk_flags & RPC_TASK_ROOTCREDS)
111 #define RPC_ASSASSINATED(t) ((t)->tk_flags & RPC_TASK_KILLED)
112 #define RPC_DO_CALLBACK(t) ((t)->tk_callback != NULL)
113 #define RPC_IS_SOFT(t) ((t)->tk_flags & RPC_TASK_SOFT)
114 #define RPC_TASK_UNINTERRUPTIBLE(t) ((t)->tk_flags & RPC_TASK_NOINTR)
116 #define RPC_TASK_RUNNING 0
117 #define RPC_TASK_QUEUED 1
118 #define RPC_TASK_WAKEUP 2
119 #define RPC_TASK_HAS_TIMER 3
120 #define RPC_TASK_ACTIVE 4
122 #define RPC_IS_RUNNING(t) (test_bit(RPC_TASK_RUNNING, &(t)->tk_runstate))
123 #define rpc_set_running(t) (set_bit(RPC_TASK_RUNNING, &(t)->tk_runstate))
124 #define rpc_test_and_set_running(t) (test_and_set_bit(RPC_TASK_RUNNING, &(t)->tk_runstate))
125 #define rpc_clear_running(t) do { smp_mb__before_clear_bit(); clear_bit(RPC_TASK_RUNNING, &(t)->tk_runstate); smp_mb__after_clear_bit(); } while (0)
127 #define RPC_IS_QUEUED(t) (test_bit(RPC_TASK_QUEUED, &(t)->tk_runstate))
128 #define rpc_set_queued(t) (set_bit(RPC_TASK_QUEUED, &(t)->tk_runstate))
129 #define rpc_clear_queued(t) do { smp_mb__before_clear_bit(); clear_bit(RPC_TASK_QUEUED, &(t)->tk_runstate); smp_mb__after_clear_bit(); } while (0)
131 #define rpc_start_wakeup(t) (test_and_set_bit(RPC_TASK_WAKEUP, &(t)->tk_runstate) == 0)
132 #define rpc_finish_wakeup(t) do { smp_mb__before_clear_bit(); clear_bit(RPC_TASK_WAKEUP, &(t)->tk_runstate); smp_mb__after_clear_bit(); } while (0)
134 #define RPC_IS_ACTIVATED(t) (test_bit(RPC_TASK_ACTIVE, &(t)->tk_runstate))
135 #define rpc_set_active(t) (set_bit(RPC_TASK_ACTIVE, &(t)->tk_runstate))
136 #define rpc_clear_active(t) do { smp_mb__before_clear_bit(); clear_bit(RPC_TASK_ACTIVE, &(t)->tk_runstate); smp_mb__after_clear_bit(); } while(0)
138 #define RPC_PRIORITY_LOW 0
139 #define RPC_PRIORITY_NORMAL 1
140 #define RPC_PRIORITY_HIGH 2
141 #define RPC_NR_PRIORITY (RPC_PRIORITY_HIGH+1)
143 struct rpc_wait_queue {
144 spinlock_t lock;
145 struct list_head tasks[RPC_NR_PRIORITY];
146 unsigned long cookie;
147 unsigned char maxpriority;
148 unsigned char priority;
149 unsigned char count;
150 unsigned char nr;
151 unsigned short qlen;
152 #ifdef RPC_DEBUG
153 const char * name;
154 #endif
155 };
157 #define RPC_BATCH_COUNT 16
159 #ifndef RPC_DEBUG
160 #define RPC_WAITQ_INIT(var,qname) { .lock = SPIN_LOCK_UNLOCKED, .tasks = { [0] = LIST_HEAD_INIT(var.tasks[0]), [1] = LIST_HEAD_INIT(var.tasks[1]), [2] = LIST_HEAD_INIT(var.tasks[2]), }, }
161 #else
162 #define RPC_WAITQ_INIT(var,qname) { .lock = SPIN_LOCK_UNLOCKED, .tasks = { [0] = LIST_HEAD_INIT(var.tasks[0]), [1] = LIST_HEAD_INIT(var.tasks[1]), [2] = LIST_HEAD_INIT(var.tasks[2]), }, .name = qname, }
163 #endif
164 #define RPC_WAITQ(var,qname) struct rpc_wait_queue var = RPC_WAITQ_INIT(var,qname)
166 #define RPC_IS_PRIORITY(q) ((q)->maxpriority > 0)
168 struct rpc_task *rpc_new_task(struct rpc_clnt *, int flags,
169 const struct rpc_call_ops *ops, void *data);
170 struct rpc_task *rpc_run_task(struct rpc_clnt *clnt, int flags,
171 const struct rpc_call_ops *ops, void *data);
172 struct rpc_task *rpc_new_child(struct rpc_clnt *, struct rpc_task *parent);
174 struct rpc_task *rpc_wake_up_next(struct rpc_wait_queue *);
176 #ifdef RPC_DEBUG
178 #endif
180 #ifdef RPC_DEBUG
181 #endif
182 #endif