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_ 14 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> 21 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 }; 29 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 }; 37 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; 47 48 struct rpc_message tk_msg; 49 __u8 tk_garb_retry; 50 __u8 tk_cred_retry; 51 52 unsigned long tk_cookie; 53 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; 59 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; 70 71 unsigned short tk_timeouts; 72 size_t tk_bytes_sent; 73 unsigned long tk_start; 74 long tk_rtt; 75 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 82 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) 84 85 #define task_for_first(task, head) if (!list_empty(head) && ((task=list_entry((head)->next, struct rpc_task, u.tk_wait.list)),1)) 86 87 #define alltask_for_each(task, pos, head) list_for_each(pos, head) if ((task=list_entry(pos, struct rpc_task, tk_task)),1) 88 89 typedef void (*rpc_action)(struct rpc_task *); 90 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 }; 96 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 106 107 #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) 115 116 #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 4 121 122 #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) 126 127 #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) 130 131 #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) 133 134 #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) 137 138 #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) 142 143 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 }; 156 157 #define RPC_BATCH_COUNT 16 158 159 #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) 165 166 #define RPC_IS_PRIORITY(q) ((q)->maxpriority > 0) 167 168 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); 173 174 struct rpc_task *rpc_wake_up_next(struct rpc_wait_queue *); 175 176 #ifdef RPC_DEBUG 177 178 #endif 179 180 #ifdef RPC_DEBUG 181 #endif 182 #endif 183