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doc, net: Update documentation of synchronisation for TX multiqueue 

Commits e308a5d806 ('netdev: Add
netdev->addr_list_lock protection.') and
e8a0464cc9 ('netdev: Allocate multiple
queues for TX.') introduced more fine-grained locks.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ben Hutchings 2012-04-05 14:39:30 +00:00 committed by David S. Miller
parent 93b6a3adbd
commit 04fd3d3515
1 changed files with 3 additions and 3 deletions
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6
Documentation/networking/netdevices.txt
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@ -65,7 +65,7 @@ dev->get_stats:
Context: nominally process, but don't sleep inside an rwlock
dev->hard_start_xmit:
Synchronization: netif_tx_lock spinlock.
Synchronization: __netif_tx_lock spinlock.
When the driver sets NETIF_F_LLTX in dev->features this will be
called without holding netif_tx_lock. In this case the driver
@ -87,12 +87,12 @@ dev->hard_start_xmit:
Only valid when NETIF_F_LLTX is set.
dev->tx_timeout:
Synchronization: netif_tx_lock spinlock.
Synchronization: netif_tx_lock spinlock; all TX queues frozen.
Context: BHs disabled
Notes: netif_queue_stopped() is guaranteed true
dev->set_rx_mode:
Synchronization: netif_tx_lock spinlock.
Synchronization: netif_addr_lock spinlock.
Context: BHs disabled
struct napi_struct synchronization rules