[NETPOLL]: pre-fill skb pool

we could do one thing (see the patch below): i think it would be useful
to fill up the netlogging skb queue straight at initialization time.
Especially if netpoll is used for dumping alone, the system might not be
in a situation to fill up the queue at the point of crash, so better be
a bit more prepared and keep the pipeline filled.

[ I've modified this to be called earlier - mpm ]

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index d09affdbad3c5cdabb6aa8a6a8fc9a2bdc8ab21a..c02a08da6d42a3f59afee93de979e81e090d633f 100644 (file)
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -725,6 +725,10 @@ int netpoll_setup(struct netpoll *np)
                npinfo->rx_np = np;
                spin_unlock_irqrestore(&npinfo->rx_lock, flags);
        }
+
+       /* fill up the skb queue */
+       refill_skbs();
+
        /* last thing to do is link it to the net device structure */
        ndev->npinfo = npinfo;