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SUNRPC: Declare RPC timers as TIMER_DEFERRABLE

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Don't wake idle CPUs only for the purpose of servicing an RPC
queue timeout.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Trond Myklebust 2019-04-07 13:58:52 -04:00 committed by Anna Schumaker
parent 24a9d9a21e
commit 431235818b
2 changed files with 6 additions and 2 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

4
net/sunrpc/sched.c
View file

@ -249,7 +249,9 @@ static void __rpc_init_priority_wait_queue(struct rpc_wait_queue *queue, const c
queue->maxpriority = nr_queues - 1;
rpc_reset_waitqueue_priority(queue);
queue->qlen = 0;
timer_setup(&queue->timer_list.timer, __rpc_queue_timer_fn, 0);
timer_setup(&queue->timer_list.timer,
__rpc_queue_timer_fn,
TIMER_DEFERRABLE);
INIT_LIST_HEAD(&queue->timer_list.list);
rpc_assign_waitqueue_name(queue, qname);
}

4
net/sunrpc/xprt.c
View file

@ -1842,7 +1842,9 @@ struct rpc_xprt *xprt_create_transport(struct xprt_create *args)
xprt->idle_timeout = 0;
INIT_WORK(&xprt->task_cleanup, xprt_autoclose);
if (xprt_has_timer(xprt))
timer_setup(&xprt->timer, xprt_init_autodisconnect, 0);
timer_setup(&xprt->timer,
xprt_init_autodisconnect,
TIMER_DEFERRABLE);
else
timer_setup(&xprt->timer, NULL, 0);