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Commit 5efd1876 authored by Trond Myklebust's avatar Trond Myklebust Committed by Anna Schumaker
Browse files

SUNRPC: Fix up tracking of timeouts 



Add a helper to ensure that debugfs and friends print out the
correct current task timeout value.

Signed-off-by: default avatarTrond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: default avatarAnna Schumaker <Anna.Schumaker@Netapp.com>
parent 6b2e6856

include/linux/sunrpc/sched.h

+1 −0
Original line number Diff line number Diff line
@@ -226,6 +226,7 @@ void rpc_execute(struct rpc_task *); 
void		rpc_init_priority_wait_queue(struct rpc_wait_queue *, const char *);

void		rpc_init_wait_queue(struct rpc_wait_queue *, const char *);

void		rpc_destroy_wait_queue(struct rpc_wait_queue *);

unsigned long	rpc_task_timeout(const struct rpc_task *task);

void		rpc_sleep_on_timeout(struct rpc_wait_queue *queue,

					struct rpc_task *task,

					rpc_action action,

include/trace/events/sunrpc.h

+1 −1
Original line number Diff line number Diff line
@@ -186,7 +186,7 @@ DECLARE_EVENT_CLASS(rpc_task_queued, 
		__entry->client_id = task->tk_client ?

				     task->tk_client->cl_clid : -1;

		__entry->task_id = task->tk_pid;

		__entry->timeout = task->tk_timeout;

		__entry->timeout = rpc_task_timeout(task);

		__entry->runstate = task->tk_runstate;

		__entry->status = task->tk_status;

		__entry->flags = task->tk_flags;

net/sunrpc/clnt.c

+1 −1
Original line number Diff line number Diff line
@@ -2874,7 +2874,7 @@ static void rpc_show_task(const struct rpc_clnt *clnt, 


	printk(KERN_INFO "%5u %04x %6d %8p %8p %8ld %8p %sv%u %s a:%ps q:%s\n",

		task->tk_pid, task->tk_flags, task->tk_status,

		clnt, task->tk_rqstp, task->tk_timeout, task->tk_ops,

		clnt, task->tk_rqstp, rpc_task_timeout(task), task->tk_ops,

		clnt->cl_program->name, clnt->cl_vers, rpc_proc_name(task),

		task->tk_action, rpc_waitq);

}

net/sunrpc/debugfs.c

+1 −1
Original line number Diff line number Diff line
@@ -33,7 +33,7 @@ tasks_show(struct seq_file *f, void *v) 


	seq_printf(f, "%5u %04x %6d 0x%x 0x%x %8ld %ps %sv%u %s a:%ps q:%s\n",

		task->tk_pid, task->tk_flags, task->tk_status,

		clnt->cl_clid, xid, task->tk_timeout, task->tk_ops,

		clnt->cl_clid, xid, rpc_task_timeout(task), task->tk_ops,

		clnt->cl_program->name, clnt->cl_vers, rpc_proc_name(task),

		task->tk_action, rpc_waitq);

	return 0;

net/sunrpc/sched.c

+14 −0
Original line number Diff line number Diff line
@@ -58,6 +58,20 @@ static struct rpc_wait_queue delay_queue; 
struct workqueue_struct *rpciod_workqueue __read_mostly;

struct workqueue_struct *xprtiod_workqueue __read_mostly;



unsigned long

rpc_task_timeout(const struct rpc_task *task)

{

	unsigned long timeout = READ_ONCE(task->tk_timeout);



	if (timeout != 0) {

		unsigned long now = jiffies;

		if (time_before(now, timeout))

			return timeout - now;

	}

	return 0;

}

EXPORT_SYMBOL_GPL(rpc_task_timeout);



/*

 * Disable the timer for a given RPC task. Should be called with

 * queue->lock and bh_disabled in order to avoid races within