diff options
author | Zhu Yi <yi.zhu@intel.com> | 2008-12-17 16:52:33 +0800 |
---|---|---|
committer | John W. Linville <linville@tuxdriver.com> | 2008-12-19 15:23:41 -0500 |
commit | f1bc4ac61f2c08515afd80c6dc3962aa6d0b138b (patch) | |
tree | d9c765de135de818dbf12d5910d38658cac5be47 /drivers/net/wireless/iwlwifi/iwl-agn.c | |
parent | 4087f6f68cdbd2845c7e54236bae1b058a7b827b (diff) |
iwlwifi: use GFP_KERNEL to allocate Rx SKB memory
Previously we allocate Rx SKB with GFP_ATOMIC flag. This is because we need
to hold a spinlock to protect the two rx_used and rx_free lists operation
in the rxq.
spin_lock();
...
element = rxq->rx_used.next;
element->skb = alloc_skb(..., GFP_ATOMIC);
list_del(element);
list_add_tail(&element->list, &rxq->rx_free);
...
spin_unlock();
After spliting the rx_used delete and rx_free insert into two operations,
we don't require the skb allocation in an atomic context any more (the
function itself is scheduled in a workqueue).
spin_lock();
...
element = rxq->rx_used.next;
list_del(element);
...
spin_unlock();
...
element->skb = alloc_skb(..., GFP_KERNEL);
...
spin_lock()
...
list_add_tail(&element->list, &rxq->rx_free);
...
spin_unlock();
This patch should fix the "iwlagn: Can not allocate SKB buffers" warning
we see recently.
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Acked-by: Tomas Winkler <tomas.winkler@intel.com>
Cc: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-agn.c')
-rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-agn.c | 12 |
1 files changed, 1 insertions, 11 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c index a0051928d29..ff8635f0ed4 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn.c @@ -1110,16 +1110,6 @@ static void iwl_setup_rx_handlers(struct iwl_priv *priv) priv->cfg->ops->lib->rx_handler_setup(priv); } -/* - * this should be called while priv->lock is locked -*/ -static void __iwl_rx_replenish(struct iwl_priv *priv) -{ - iwl_rx_allocate(priv); - iwl_rx_queue_restock(priv); -} - - /** * iwl_rx_handle - Main entry function for receiving responses from uCode * @@ -1228,7 +1218,7 @@ void iwl_rx_handle(struct iwl_priv *priv) count++; if (count >= 8) { priv->rxq.read = i; - __iwl_rx_replenish(priv); + iwl_rx_queue_restock(priv); count = 0; } } |