SUNRPC: Declare RPC timers as TIMER_DEFERRABLE

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>

diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c
index 301e0f7f1dc98b191290ccc529d13da544eb47e6..1a12fb03e611d4213dc9e59c60dda4864817ab50 100644 (file)
--- a/net/sunrpc/sched.c
+++ b/net/sunrpc/sched.c
@@ -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);
 }

diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c
index 7c3623b174939da63d897dc41a2b11c3be7627d1..36af1a1929afe70467c2e1a62cb35570ccdd1413 100644 (file)
--- a/net/sunrpc/xprt.c
+++ b/net/sunrpc/xprt.c
@@ -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);