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| author | Ben Hutchings <bhutchings@solarflare.com> | 2012-04-05 14:39:30 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-04-06 02:43:12 -0400 |
| commit | 04fd3d3515612b71f96b851db7888bfe58ef2142 (patch) | |
| tree | 9ad160f25a0b293d5d4d561d02b75314fef88273 /Documentation/networking/netdevices.txt | |
| parent | 93b6a3adbd159174772702744b142d60e3891dfa (diff) | |
| download | linux-04fd3d3515612b71f96b851db7888bfe58ef2142.tar.gz linux-04fd3d3515612b71f96b851db7888bfe58ef2142.tar.bz2 linux-04fd3d3515612b71f96b851db7888bfe58ef2142.zip | |
doc, net: Update documentation of synchronisation for TX multiqueue
Commits e308a5d806c852f56590ffdd3834d0df0cbed8d7 ('netdev: Add
netdev->addr_list_lock protection.') and
e8a0464cc950972824e2e128028ae3db666ec1ed ('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>
Diffstat (limited to 'Documentation/networking/netdevices.txt')
| -rw-r--r-- | Documentation/networking/netdevices.txt | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/Documentation/networking/netdevices.txt b/Documentation/networking/netdevices.txt index 336fe8e85b20..b107733cfdcd 100644 --- a/Documentation/networking/netdevices.txt +++ b/Documentation/networking/netdevices.txt @@ -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 |