diff options
Diffstat (limited to 'net/core/netpoll.c')
| -rw-r--r-- | net/core/netpoll.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/net/core/netpoll.c b/net/core/netpoll.c index 64f51eec657..1b76eb11deb 100644 --- a/net/core/netpoll.c +++ b/net/core/netpoll.c @@ -24,6 +24,7 @@ #include <net/tcp.h> #include <net/udp.h> #include <asm/unaligned.h> +#include <trace/events/napi.h> /* * We maintain a small pool of fully-sized skbs, to make sure the @@ -137,6 +138,7 @@ static int poll_one_napi(struct netpoll_info *npinfo, set_bit(NAPI_STATE_NPSVC, &napi->state); work = napi->poll(napi, budget); + trace_napi_poll(napi); clear_bit(NAPI_STATE_NPSVC, &napi->state); atomic_dec(&trapped); @@ -300,8 +302,11 @@ static void netpoll_send_skb(struct netpoll *np, struct sk_buff *skb) for (tries = jiffies_to_usecs(1)/USEC_PER_POLL; tries > 0; --tries) { if (__netif_tx_trylock(txq)) { - if (!netif_tx_queue_stopped(txq)) + if (!netif_tx_queue_stopped(txq)) { status = ops->ndo_start_xmit(skb, dev); + if (status == NETDEV_TX_OK) + txq_trans_update(txq); + } __netif_tx_unlock(txq); if (status == NETDEV_TX_OK) @@ -314,6 +319,11 @@ static void netpoll_send_skb(struct netpoll *np, struct sk_buff *skb) udelay(USEC_PER_POLL); } + + WARN_ONCE(!irqs_disabled(), + "netpoll_send_skb(): %s enabled interrupts in poll (%pF)\n", + dev->name, ops->ndo_start_xmit); + local_irq_restore(flags); } @@ -735,7 +745,7 @@ int netpoll_setup(struct netpoll *np) np->name); break; } - cond_resched(); + msleep(1); } /* If carrier appears to come up instantly, we don't |