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SUNRPC: track length of RPC wait queues

Browse source 
RPC wait queue length will eventually be exported to userland via the RPC
iostats interface.

Test plan:
Compile kernel with CONFIG_NFS enabled.

Signed-off-by: Chuck Lever <[email protected]>
Signed-off-by: Trond Myklebust <[email protected]>
This commit is contained in:
Chuck Lever 2006-03-20 13:44:15 -05:00 • committed by Trond Myklebust
commit e19b63dafd
2 changed files with 3 additions and 0 deletions
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2
net/sunrpc/sched.c
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@ -181,6 +181,7 @@ static void __rpc_add_wait_queue(struct rpc_wait_queue *queue, struct rpc_task *
else
list_add_tail(&task->u.tk_wait.list, &queue->tasks[0]);
task->u.tk_wait.rpc_waitq = queue;
queue->qlen++;
rpc_set_queued(task);
dprintk("RPC: %4d added to queue %p \"%s\"\n",
@ -215,6 +216,7 @@ static void __rpc_remove_wait_queue(struct rpc_task *task)
__rpc_remove_wait_queue_priority(task);
else
list_del(&task->u.tk_wait.list);
queue->qlen--;
dprintk("RPC: %4d removed from queue %p \"%s\"\n",
task->tk_pid, queue, rpc_qname(queue));
}