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| author | David S. Miller <davem@davemloft.net> | 2008-07-31 16:58:50 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-07-31 16:58:50 -0700 |
| commit | c3f26a269c2421f97f10cf8ed05d5099b573af4d (patch) | |
| tree | d0602cbb48742b3e39ab6bdcaa08c342d4cd2cae /net/core/pktgen.c | |
| parent | 967ab999a090b1a4e7d3c7febfd6d89b42fb4cf4 (diff) | |
| download | linux-c3f26a269c2421f97f10cf8ed05d5099b573af4d.tar.gz linux-c3f26a269c2421f97f10cf8ed05d5099b573af4d.tar.bz2 linux-c3f26a269c2421f97f10cf8ed05d5099b573af4d.zip | |
netdev: Fix lockdep warnings in multiqueue configurations.
When support for multiple TX queues were added, the
netif_tx_lock() routines we converted to iterate over
all TX queues and grab each queue's spinlock.
This causes heartburn for lockdep and it's not a healthy
thing to do with lots of TX queues anyways.
So modify this to use a top-level lock and a "frozen"
state for the individual TX queues.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/pktgen.c')
| -rw-r--r-- | net/core/pktgen.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/net/core/pktgen.c b/net/core/pktgen.c index c7d484f7e1c4..3284605f2ec7 100644 --- a/net/core/pktgen.c +++ b/net/core/pktgen.c @@ -3305,6 +3305,7 @@ static __inline__ void pktgen_xmit(struct pktgen_dev *pkt_dev) txq = netdev_get_tx_queue(odev, queue_map); if (netif_tx_queue_stopped(txq) || + netif_tx_queue_frozen(txq) || need_resched()) { idle_start = getCurUs(); @@ -3320,7 +3321,8 @@ static __inline__ void pktgen_xmit(struct pktgen_dev *pkt_dev) pkt_dev->idle_acc += getCurUs() - idle_start; - if (netif_tx_queue_stopped(txq)) { + if (netif_tx_queue_stopped(txq) || + netif_tx_queue_frozen(txq)) { pkt_dev->next_tx_us = getCurUs(); /* TODO */ pkt_dev->next_tx_ns = 0; goto out; /* Try the next interface */ @@ -3352,7 +3354,8 @@ static __inline__ void pktgen_xmit(struct pktgen_dev *pkt_dev) txq = netdev_get_tx_queue(odev, queue_map); __netif_tx_lock_bh(txq); - if (!netif_tx_queue_stopped(txq)) { + if (!netif_tx_queue_stopped(txq) && + !netif_tx_queue_frozen(txq)) { atomic_inc(&(pkt_dev->skb->users)); retry_now: |