From 6529eba08fe7297852391a468d95322913de73fa Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Thu, 14 Jun 2007 16:40:14 -0400 Subject: SUNRPC: Move rpc_task->tk_task list into struct rpc_clnt Signed-off-by: Trond Myklebust --- net/sunrpc/sched.c | 117 +++++++++++++++++++++++++++++++++-------------------- 1 file changed, 74 insertions(+), 43 deletions(-) (limited to 'net/sunrpc/sched.c') diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c index 944d75396fb3..6309f3b52c53 100644 --- a/net/sunrpc/sched.c +++ b/net/sunrpc/sched.c @@ -50,9 +50,10 @@ static void rpc_release_task(struct rpc_task *task); static RPC_WAITQ(delay_queue, "delayq"); /* - * All RPC tasks are linked into this list + * All RPC clients are linked into this list */ -static LIST_HEAD(all_tasks); +static LIST_HEAD(all_clients); +static DECLARE_WAIT_QUEUE_HEAD(client_kill_wait); /* * rpciod-related stuff @@ -277,7 +278,8 @@ static void rpc_set_active(struct rpc_task *task) task->tk_pid = rpc_task_id++; #endif /* Add to global list of all tasks */ - list_add_tail(&task->tk_task, &all_tasks); + if (task->tk_client) + list_add_tail(&task->tk_task, &task->tk_client->cl_tasks); spin_unlock(&rpc_sched_lock); } @@ -818,6 +820,7 @@ void rpc_init_task(struct rpc_task *task, struct rpc_clnt *clnt, int flags, cons if (tk_ops->rpc_call_prepare != NULL) task->tk_action = rpc_prepare_task; task->tk_calldata = calldata; + INIT_LIST_HEAD(&task->tk_task); /* Initialize retry counters */ task->tk_garb_retry = 2; @@ -920,11 +923,12 @@ static void rpc_release_task(struct rpc_task *task) #endif dprintk("RPC: %5u release task\n", task->tk_pid); - /* Remove from global task list */ - spin_lock(&rpc_sched_lock); - list_del(&task->tk_task); - spin_unlock(&rpc_sched_lock); - + if (!list_empty(&task->tk_task)) { + /* Remove from client task list */ + spin_lock(&rpc_sched_lock); + list_del(&task->tk_task); + spin_unlock(&rpc_sched_lock); + } BUG_ON (RPC_IS_QUEUED(task)); /* Synchronously delete any running timer */ @@ -966,42 +970,52 @@ EXPORT_SYMBOL(rpc_run_task); * Kill all tasks for the given client. * XXX: kill their descendants as well? */ -void rpc_killall_tasks(struct rpc_clnt *clnt) +static void rpc_killall_tasks_locked(struct list_head *head) { struct rpc_task *rovr; - struct list_head *le; - dprintk("RPC: killing all tasks for client %p\n", clnt); - /* - * Spin lock all_tasks to prevent changes... - */ - spin_lock(&rpc_sched_lock); - alltask_for_each(rovr, le, &all_tasks) { + list_for_each_entry(rovr, head, tk_task) { if (! RPC_IS_ACTIVATED(rovr)) continue; - if (!clnt || rovr->tk_client == clnt) { + if (!(rovr->tk_flags & RPC_TASK_KILLED)) { rovr->tk_flags |= RPC_TASK_KILLED; rpc_exit(rovr, -EIO); rpc_wake_up_task(rovr); } } +} + +void rpc_killall_tasks(struct rpc_clnt *clnt) +{ + dprintk("RPC: killing all tasks for client %p\n", clnt); + /* + * Spin lock all_tasks to prevent changes... + */ + spin_lock(&rpc_sched_lock); + rpc_killall_tasks_locked(&clnt->cl_tasks); spin_unlock(&rpc_sched_lock); } static void rpciod_killall(void) { + struct rpc_clnt *clnt; unsigned long flags; - while (!list_empty(&all_tasks)) { + for(;;) { clear_thread_flag(TIF_SIGPENDING); - rpc_killall_tasks(NULL); + + spin_lock(&rpc_sched_lock); + list_for_each_entry(clnt, &all_clients, cl_clients) + rpc_killall_tasks_locked(&clnt->cl_tasks); + spin_unlock(&rpc_sched_lock); flush_workqueue(rpciod_workqueue); - if (!list_empty(&all_tasks)) { - dprintk("RPC: rpciod_killall: waiting for tasks " + if (!list_empty(&all_clients)) + break; + dprintk("RPC: rpciod_killall: waiting for tasks " "to exit\n"); - yield(); - } + wait_event_timeout(client_kill_wait, + list_empty(&all_clients), 1*HZ); } spin_lock_irqsave(¤t->sighand->siglock, flags); @@ -1009,6 +1023,22 @@ static void rpciod_killall(void) spin_unlock_irqrestore(¤t->sighand->siglock, flags); } +void rpc_register_client(struct rpc_clnt *clnt) +{ + spin_lock(&rpc_sched_lock); + list_add(&clnt->cl_clients, &all_clients); + spin_unlock(&rpc_sched_lock); +} + +void rpc_unregister_client(struct rpc_clnt *clnt) +{ + spin_lock(&rpc_sched_lock); + list_del(&clnt->cl_clients); + if (list_empty(&all_clients)) + wake_up(&client_kill_wait); + spin_unlock(&rpc_sched_lock); +} + /* * Start up the rpciod process if it's not already running. */ @@ -1071,32 +1101,33 @@ rpciod_down(void) #ifdef RPC_DEBUG void rpc_show_tasks(void) { - struct list_head *le; + struct rpc_clnt *clnt; struct rpc_task *t; spin_lock(&rpc_sched_lock); - if (list_empty(&all_tasks)) { - spin_unlock(&rpc_sched_lock); - return; - } + if (list_empty(&all_clients)) + goto out; printk("-pid- proc flgs status -client- -prog- --rqstp- -timeout " "-rpcwait -action- ---ops--\n"); - alltask_for_each(t, le, &all_tasks) { - const char *rpc_waitq = "none"; - - if (RPC_IS_QUEUED(t)) - rpc_waitq = rpc_qname(t->u.tk_wait.rpc_waitq); - - printk("%5u %04d %04x %6d %8p %6d %8p %8ld %8s %8p %8p\n", - t->tk_pid, - (t->tk_msg.rpc_proc ? t->tk_msg.rpc_proc->p_proc : -1), - t->tk_flags, t->tk_status, - t->tk_client, - (t->tk_client ? t->tk_client->cl_prog : 0), - t->tk_rqstp, t->tk_timeout, - rpc_waitq, - t->tk_action, t->tk_ops); + list_for_each_entry(clnt, &all_clients, cl_clients) { + list_for_each_entry(t, &clnt->cl_tasks, tk_task) { + const char *rpc_waitq = "none"; + + if (RPC_IS_QUEUED(t)) + rpc_waitq = rpc_qname(t->u.tk_wait.rpc_waitq); + + printk("%5u %04d %04x %6d %8p %6d %8p %8ld %8s %8p %8p\n", + t->tk_pid, + (t->tk_msg.rpc_proc ? t->tk_msg.rpc_proc->p_proc : -1), + t->tk_flags, t->tk_status, + t->tk_client, + (t->tk_client ? t->tk_client->cl_prog : 0), + t->tk_rqstp, t->tk_timeout, + rpc_waitq, + t->tk_action, t->tk_ops); + } } +out: spin_unlock(&rpc_sched_lock); } #endif -- cgit v1.2.3 From 4bef61ff7514396419563ca54fd42ef846485b06 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sat, 16 Jun 2007 14:17:01 -0400 Subject: SUNRPC: Add a per-rpc_clnt spinlock Use that to protect the rpc_clnt->cl_tasks list instead of using a global lock. Signed-off-by: Trond Myklebust --- net/sunrpc/sched.c | 47 +++++++++++++++++++++++++++-------------------- 1 file changed, 27 insertions(+), 20 deletions(-) (limited to 'net/sunrpc/sched.c') diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c index 6309f3b52c53..f56ebc5a08f7 100644 --- a/net/sunrpc/sched.c +++ b/net/sunrpc/sched.c @@ -270,17 +270,22 @@ static int rpc_wait_bit_interruptible(void *word) static void rpc_set_active(struct rpc_task *task) { + struct rpc_clnt *clnt; if (test_and_set_bit(RPC_TASK_ACTIVE, &task->tk_runstate) != 0) return; - spin_lock(&rpc_sched_lock); #ifdef RPC_DEBUG task->tk_magic = RPC_TASK_MAGIC_ID; + spin_lock(&rpc_sched_lock); task->tk_pid = rpc_task_id++; + spin_unlock(&rpc_sched_lock); #endif /* Add to global list of all tasks */ - if (task->tk_client) - list_add_tail(&task->tk_task, &task->tk_client->cl_tasks); - spin_unlock(&rpc_sched_lock); + clnt = task->tk_client; + if (clnt != NULL) { + spin_lock(&clnt->cl_lock); + list_add_tail(&task->tk_task, &clnt->cl_tasks); + spin_unlock(&clnt->cl_lock); + } } /* @@ -924,10 +929,11 @@ static void rpc_release_task(struct rpc_task *task) dprintk("RPC: %5u release task\n", task->tk_pid); if (!list_empty(&task->tk_task)) { + struct rpc_clnt *clnt = task->tk_client; /* Remove from client task list */ - spin_lock(&rpc_sched_lock); + spin_lock(&clnt->cl_lock); list_del(&task->tk_task); - spin_unlock(&rpc_sched_lock); + spin_unlock(&clnt->cl_lock); } BUG_ON (RPC_IS_QUEUED(task)); @@ -970,12 +976,19 @@ EXPORT_SYMBOL(rpc_run_task); * Kill all tasks for the given client. * XXX: kill their descendants as well? */ -static void rpc_killall_tasks_locked(struct list_head *head) +void rpc_killall_tasks(struct rpc_clnt *clnt) { struct rpc_task *rovr; - list_for_each_entry(rovr, head, tk_task) { + if (list_empty(&clnt->cl_tasks)) + return; + dprintk("RPC: killing all tasks for client %p\n", clnt); + /* + * Spin lock all_tasks to prevent changes... + */ + spin_lock(&clnt->cl_lock); + list_for_each_entry(rovr, &clnt->cl_tasks, tk_task) { if (! RPC_IS_ACTIVATED(rovr)) continue; if (!(rovr->tk_flags & RPC_TASK_KILLED)) { @@ -984,17 +997,7 @@ static void rpc_killall_tasks_locked(struct list_head *head) rpc_wake_up_task(rovr); } } -} - -void rpc_killall_tasks(struct rpc_clnt *clnt) -{ - dprintk("RPC: killing all tasks for client %p\n", clnt); - /* - * Spin lock all_tasks to prevent changes... - */ - spin_lock(&rpc_sched_lock); - rpc_killall_tasks_locked(&clnt->cl_tasks); - spin_unlock(&rpc_sched_lock); + spin_unlock(&clnt->cl_lock); } static void rpciod_killall(void) @@ -1007,7 +1010,7 @@ static void rpciod_killall(void) spin_lock(&rpc_sched_lock); list_for_each_entry(clnt, &all_clients, cl_clients) - rpc_killall_tasks_locked(&clnt->cl_tasks); + rpc_killall_tasks(clnt); spin_unlock(&rpc_sched_lock); flush_workqueue(rpciod_workqueue); if (!list_empty(&all_clients)) @@ -1110,6 +1113,9 @@ void rpc_show_tasks(void) printk("-pid- proc flgs status -client- -prog- --rqstp- -timeout " "-rpcwait -action- ---ops--\n"); list_for_each_entry(clnt, &all_clients, cl_clients) { + if (list_empty(&clnt->cl_tasks)) + continue; + spin_lock(&clnt->cl_lock); list_for_each_entry(t, &clnt->cl_tasks, tk_task) { const char *rpc_waitq = "none"; @@ -1126,6 +1132,7 @@ void rpc_show_tasks(void) rpc_waitq, t->tk_action, t->tk_ops); } + spin_unlock(&clnt->cl_lock); } out: spin_unlock(&rpc_sched_lock); -- cgit v1.2.3 From c44fe705530ff9ea5e563bf9b65bdd29defe682b Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sat, 16 Jun 2007 14:17:01 -0400 Subject: SUNRPC: Clean up tk_pid allocation and make it lockless Signed-off-by: Trond Myklebust --- net/sunrpc/sched.c | 22 +++++++++++++++------- 1 file changed, 15 insertions(+), 7 deletions(-) (limited to 'net/sunrpc/sched.c') diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c index f56ebc5a08f7..0e9fbbd4f987 100644 --- a/net/sunrpc/sched.c +++ b/net/sunrpc/sched.c @@ -25,7 +25,6 @@ #ifdef RPC_DEBUG #define RPCDBG_FACILITY RPCDBG_SCHED #define RPC_TASK_MAGIC_ID 0xf00baa -static int rpc_task_id; #endif /* @@ -268,17 +267,26 @@ static int rpc_wait_bit_interruptible(void *word) return 0; } +#ifdef RPC_DEBUG +static void rpc_task_set_debuginfo(struct rpc_task *task) +{ + static atomic_t rpc_pid; + + task->tk_magic = RPC_TASK_MAGIC_ID; + task->tk_pid = atomic_inc_return(&rpc_pid); +} +#else +static inline void rpc_task_set_debuginfo(struct rpc_task *task) +{ +} +#endif + static void rpc_set_active(struct rpc_task *task) { struct rpc_clnt *clnt; if (test_and_set_bit(RPC_TASK_ACTIVE, &task->tk_runstate) != 0) return; -#ifdef RPC_DEBUG - task->tk_magic = RPC_TASK_MAGIC_ID; - spin_lock(&rpc_sched_lock); - task->tk_pid = rpc_task_id++; - spin_unlock(&rpc_sched_lock); -#endif + rpc_task_set_debuginfo(task); /* Add to global list of all tasks */ clnt = task->tk_client; if (clnt != NULL) { -- cgit v1.2.3 From 34f52e3591f241b825353ba27def956d8487c400 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Thu, 14 Jun 2007 16:40:31 -0400 Subject: SUNRPC: Convert rpc_clnt->cl_users to a kref Signed-off-by: Trond Myklebust --- net/sunrpc/sched.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) (limited to 'net/sunrpc/sched.c') diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c index 0e9fbbd4f987..bb12983580a0 100644 --- a/net/sunrpc/sched.c +++ b/net/sunrpc/sched.c @@ -846,7 +846,7 @@ void rpc_init_task(struct rpc_task *task, struct rpc_clnt *clnt, int flags, cons task->tk_workqueue = rpciod_workqueue; if (clnt) { - atomic_inc(&clnt->cl_users); + kref_get(&clnt->cl_kref); if (clnt->cl_softrtry) task->tk_flags |= RPC_TASK_SOFT; if (!clnt->cl_intr) @@ -898,9 +898,7 @@ out: cleanup: /* Check whether to release the client */ if (clnt) { - printk("rpc_new_task: failed, users=%d, oneshot=%d\n", - atomic_read(&clnt->cl_users), clnt->cl_oneshot); - atomic_inc(&clnt->cl_users); /* pretend we were used ... */ + kref_get(&clnt->cl_kref); /* pretend we were used ... */ rpc_release_client(clnt); } goto out; -- cgit v1.2.3 From 90c5755ff5111ffdcca10a1e8a823dba29f37b6d Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sat, 9 Jun 2007 19:49:36 -0400 Subject: SUNRPC: Kill rpc_clnt->cl_oneshot Replace it with explicit calls to rpc_shutdown_client() or rpc_destroy_client() (for the case of asynchronous calls). Signed-off-by: Trond Myklebust --- net/sunrpc/sched.c | 14 ++------------ 1 file changed, 2 insertions(+), 12 deletions(-) (limited to 'net/sunrpc/sched.c') diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c index bb12983580a0..d95fe4e40eb4 100644 --- a/net/sunrpc/sched.c +++ b/net/sunrpc/sched.c @@ -876,9 +876,7 @@ static void rpc_free_task(struct rcu_head *rcu) } /* - * Create a new task for the specified client. We have to - * clean up after an allocation failure, as the client may - * have specified "oneshot". + * Create a new task for the specified client. */ struct rpc_task *rpc_new_task(struct rpc_clnt *clnt, int flags, const struct rpc_call_ops *tk_ops, void *calldata) { @@ -886,7 +884,7 @@ struct rpc_task *rpc_new_task(struct rpc_clnt *clnt, int flags, const struct rpc task = rpc_alloc_task(); if (!task) - goto cleanup; + goto out; rpc_init_task(task, clnt, flags, tk_ops, calldata); @@ -894,14 +892,6 @@ struct rpc_task *rpc_new_task(struct rpc_clnt *clnt, int flags, const struct rpc task->tk_flags |= RPC_TASK_DYNAMIC; out: return task; - -cleanup: - /* Check whether to release the client */ - if (clnt) { - kref_get(&clnt->cl_kref); /* pretend we were used ... */ - rpc_release_client(clnt); - } - goto out; } -- cgit v1.2.3 From ab418d70e1fceda1e2824c45ba3323a1b1413507 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Thu, 14 Jun 2007 17:08:36 -0400 Subject: SUNRPC: Optimise rpciod_up() Instead of taking the mutex every time we just need to increment/decrement rpciod_users, we can optmise by using atomic_inc_not_zero and atomic_dec_and_test. Signed-off-by: Trond Myklebust --- net/sunrpc/sched.c | 49 +++++++++++++++++++++---------------------------- 1 file changed, 21 insertions(+), 28 deletions(-) (limited to 'net/sunrpc/sched.c') diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c index d95fe4e40eb4..f6eed4d4e5dd 100644 --- a/net/sunrpc/sched.c +++ b/net/sunrpc/sched.c @@ -58,7 +58,7 @@ static DECLARE_WAIT_QUEUE_HEAD(client_kill_wait); * rpciod-related stuff */ static DEFINE_MUTEX(rpciod_mutex); -static unsigned int rpciod_users; +static atomic_t rpciod_users = ATOMIC_INIT(0); struct workqueue_struct *rpciod_workqueue; /* @@ -1047,28 +1047,27 @@ rpciod_up(void) struct workqueue_struct *wq; int error = 0; + if (atomic_inc_not_zero(&rpciod_users)) + return 0; + mutex_lock(&rpciod_mutex); - dprintk("RPC: rpciod_up: users %u\n", rpciod_users); - rpciod_users++; - if (rpciod_workqueue) - goto out; - /* - * If there's no pid, we should be the first user. - */ - if (rpciod_users > 1) - printk(KERN_WARNING "rpciod_up: no workqueue, %u users??\n", rpciod_users); + + /* Guard against races with rpciod_down() */ + if (rpciod_workqueue != NULL) + goto out_ok; /* * Create the rpciod thread and wait for it to start. */ + dprintk("RPC: creating workqueue rpciod\n"); error = -ENOMEM; wq = create_workqueue("rpciod"); - if (wq == NULL) { - printk(KERN_WARNING "rpciod_up: create workqueue failed, error=%d\n", error); - rpciod_users--; + if (wq == NULL) goto out; - } + rpciod_workqueue = wq; error = 0; +out_ok: + atomic_inc(&rpciod_users); out: mutex_unlock(&rpciod_mutex); return error; @@ -1077,23 +1076,17 @@ out: void rpciod_down(void) { + if (!atomic_dec_and_test(&rpciod_users)) + return; + mutex_lock(&rpciod_mutex); - dprintk("RPC: rpciod_down sema %u\n", rpciod_users); - if (rpciod_users) { - if (--rpciod_users) - goto out; - } else - printk(KERN_WARNING "rpciod_down: no users??\n"); + dprintk("RPC: destroying workqueue rpciod\n"); - if (!rpciod_workqueue) { - dprintk("RPC: rpciod_down: Nothing to do!\n"); - goto out; + if (atomic_read(&rpciod_users) == 0 && rpciod_workqueue != NULL) { + rpciod_killall(); + destroy_workqueue(rpciod_workqueue); + rpciod_workqueue = NULL; } - rpciod_killall(); - - destroy_workqueue(rpciod_workqueue); - rpciod_workqueue = NULL; - out: mutex_unlock(&rpciod_mutex); } -- cgit v1.2.3 From 4ada539ed77c7a2bbcb75cafbbd7bd8d2b9bef7b Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Thu, 14 Jun 2007 17:26:17 -0400 Subject: SUNRPC: Make create_client() take a reference to the rpciod workqueue Ensures that an rpc_client always has the possibility to send asynchronous RPC calls. Signed-off-by: Trond Myklebust --- net/sunrpc/sched.c | 31 ------------------------------- 1 file changed, 31 deletions(-) (limited to 'net/sunrpc/sched.c') diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c index f6eed4d4e5dd..05825154ddd9 100644 --- a/net/sunrpc/sched.c +++ b/net/sunrpc/sched.c @@ -39,7 +39,6 @@ static mempool_t *rpc_task_mempool __read_mostly; static mempool_t *rpc_buffer_mempool __read_mostly; static void __rpc_default_timer(struct rpc_task *task); -static void rpciod_killall(void); static void rpc_async_schedule(struct work_struct *); static void rpc_release_task(struct rpc_task *task); @@ -52,7 +51,6 @@ static RPC_WAITQ(delay_queue, "delayq"); * All RPC clients are linked into this list */ static LIST_HEAD(all_clients); -static DECLARE_WAIT_QUEUE_HEAD(client_kill_wait); /* * rpciod-related stuff @@ -996,32 +994,6 @@ void rpc_killall_tasks(struct rpc_clnt *clnt) spin_unlock(&clnt->cl_lock); } -static void rpciod_killall(void) -{ - struct rpc_clnt *clnt; - unsigned long flags; - - for(;;) { - clear_thread_flag(TIF_SIGPENDING); - - spin_lock(&rpc_sched_lock); - list_for_each_entry(clnt, &all_clients, cl_clients) - rpc_killall_tasks(clnt); - spin_unlock(&rpc_sched_lock); - flush_workqueue(rpciod_workqueue); - if (!list_empty(&all_clients)) - break; - dprintk("RPC: rpciod_killall: waiting for tasks " - "to exit\n"); - wait_event_timeout(client_kill_wait, - list_empty(&all_clients), 1*HZ); - } - - spin_lock_irqsave(¤t->sighand->siglock, flags); - recalc_sigpending(); - spin_unlock_irqrestore(¤t->sighand->siglock, flags); -} - void rpc_register_client(struct rpc_clnt *clnt) { spin_lock(&rpc_sched_lock); @@ -1033,8 +1005,6 @@ void rpc_unregister_client(struct rpc_clnt *clnt) { spin_lock(&rpc_sched_lock); list_del(&clnt->cl_clients); - if (list_empty(&all_clients)) - wake_up(&client_kill_wait); spin_unlock(&rpc_sched_lock); } @@ -1083,7 +1053,6 @@ rpciod_down(void) dprintk("RPC: destroying workqueue rpciod\n"); if (atomic_read(&rpciod_users) == 0 && rpciod_workqueue != NULL) { - rpciod_killall(); destroy_workqueue(rpciod_workqueue); rpciod_workqueue = NULL; } -- cgit v1.2.3 From 188fef11db219f13f32d055ba59985e7d1a349fe Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sat, 16 Jun 2007 14:18:40 -0400 Subject: SUNRPC: Move rpc_register_client and friends into net/sunrpc/clnt.c Signed-off-by: Trond Myklebust --- net/sunrpc/sched.c | 62 ------------------------------------------------------ 1 file changed, 62 deletions(-) (limited to 'net/sunrpc/sched.c') diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c index 05825154ddd9..c0f8d25caf57 100644 --- a/net/sunrpc/sched.c +++ b/net/sunrpc/sched.c @@ -47,11 +47,6 @@ static void rpc_release_task(struct rpc_task *task); */ static RPC_WAITQ(delay_queue, "delayq"); -/* - * All RPC clients are linked into this list - */ -static LIST_HEAD(all_clients); - /* * rpciod-related stuff */ @@ -59,11 +54,6 @@ static DEFINE_MUTEX(rpciod_mutex); static atomic_t rpciod_users = ATOMIC_INIT(0); struct workqueue_struct *rpciod_workqueue; -/* - * Spinlock for other critical sections of code. - */ -static DEFINE_SPINLOCK(rpc_sched_lock); - /* * Disable the timer for a given RPC task. Should be called with * queue->lock and bh_disabled in order to avoid races within @@ -994,20 +984,6 @@ void rpc_killall_tasks(struct rpc_clnt *clnt) spin_unlock(&clnt->cl_lock); } -void rpc_register_client(struct rpc_clnt *clnt) -{ - spin_lock(&rpc_sched_lock); - list_add(&clnt->cl_clients, &all_clients); - spin_unlock(&rpc_sched_lock); -} - -void rpc_unregister_client(struct rpc_clnt *clnt) -{ - spin_lock(&rpc_sched_lock); - list_del(&clnt->cl_clients); - spin_unlock(&rpc_sched_lock); -} - /* * Start up the rpciod process if it's not already running. */ @@ -1059,44 +1035,6 @@ rpciod_down(void) mutex_unlock(&rpciod_mutex); } -#ifdef RPC_DEBUG -void rpc_show_tasks(void) -{ - struct rpc_clnt *clnt; - struct rpc_task *t; - - spin_lock(&rpc_sched_lock); - if (list_empty(&all_clients)) - goto out; - printk("-pid- proc flgs status -client- -prog- --rqstp- -timeout " - "-rpcwait -action- ---ops--\n"); - list_for_each_entry(clnt, &all_clients, cl_clients) { - if (list_empty(&clnt->cl_tasks)) - continue; - spin_lock(&clnt->cl_lock); - list_for_each_entry(t, &clnt->cl_tasks, tk_task) { - const char *rpc_waitq = "none"; - - if (RPC_IS_QUEUED(t)) - rpc_waitq = rpc_qname(t->u.tk_wait.rpc_waitq); - - printk("%5u %04d %04x %6d %8p %6d %8p %8ld %8s %8p %8p\n", - t->tk_pid, - (t->tk_msg.rpc_proc ? t->tk_msg.rpc_proc->p_proc : -1), - t->tk_flags, t->tk_status, - t->tk_client, - (t->tk_client ? t->tk_client->cl_prog : 0), - t->tk_rqstp, t->tk_timeout, - rpc_waitq, - t->tk_action, t->tk_ops); - } - spin_unlock(&clnt->cl_lock); - } -out: - spin_unlock(&rpc_sched_lock); -} -#endif - void rpc_destroy_mempool(void) { -- cgit v1.2.3 From 6e5b70e9d1e712d8dad5514e0ab5240ac4b5fb57 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 12 Jun 2007 10:02:37 -0400 Subject: SUNRPC: clean up rpc_call_async/rpc_call_sync/rpc_run_task Signed-off-by: Trond Myklebust --- net/sunrpc/sched.c | 23 ----------------------- 1 file changed, 23 deletions(-) (limited to 'net/sunrpc/sched.c') diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c index c0f8d25caf57..2ac43c41c3a9 100644 --- a/net/sunrpc/sched.c +++ b/net/sunrpc/sched.c @@ -933,29 +933,6 @@ static void rpc_release_task(struct rpc_task *task) rpc_put_task(task); } -/** - * rpc_run_task - Allocate a new RPC task, then run rpc_execute against it - * @clnt: pointer to RPC client - * @flags: RPC flags - * @ops: RPC call ops - * @data: user call data - */ -struct rpc_task *rpc_run_task(struct rpc_clnt *clnt, int flags, - const struct rpc_call_ops *ops, - void *data) -{ - struct rpc_task *task; - task = rpc_new_task(clnt, flags, ops, data); - if (task == NULL) { - rpc_release_calldata(ops, data); - return ERR_PTR(-ENOMEM); - } - atomic_inc(&task->tk_count); - rpc_execute(task); - return task; -} -EXPORT_SYMBOL(rpc_run_task); - /* * Kill all tasks for the given client. * XXX: kill their descendants as well? -- cgit v1.2.3