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| author | Eliezer Tamir <eliezer.tamir@linux.intel.com> | 2013-06-10 11:39:50 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-06-10 21:22:35 -0700 |
| commit | 060212928670593fb89243640bf05cf89560b023 (patch) | |
| tree | 32ae5c7be094983fb06430dbe09d36e2b317ca9c /Documentation/sysctl | |
| parent | af12fa6e46aa651e7b86a4c4117b562518fef184 (diff) | |
| download | linux-060212928670593fb89243640bf05cf89560b023.tar.gz linux-060212928670593fb89243640bf05cf89560b023.tar.bz2 linux-060212928670593fb89243640bf05cf89560b023.zip | |
net: add low latency socket poll
Adds an ndo_ll_poll method and the code that supports it.
This method can be used by low latency applications to busy-poll
Ethernet device queues directly from the socket code.
sysctl_net_ll_poll controls how many microseconds to poll.
Default is zero (disabled).
Individual protocol support will be added by subsequent patches.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Eliezer Tamir <eliezer.tamir@linux.intel.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Tested-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/sysctl')
| -rw-r--r-- | Documentation/sysctl/net.txt | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/sysctl/net.txt b/Documentation/sysctl/net.txt index c1f8640c2fc8..85ab72dcdc3c 100644 --- a/Documentation/sysctl/net.txt +++ b/Documentation/sysctl/net.txt @@ -50,6 +50,13 @@ The maximum number of packets that kernel can handle on a NAPI interrupt, it's a Per-CPU variable. Default: 64 +low_latency_poll +---------------- +Low latency busy poll timeout. (needs CONFIG_NET_LL_RX_POLL) +Approximate time in us to spin waiting for packets on the device queue. +Recommended value is 50. May increase power usage. +Default: 0 (off) + rmem_default ------------ |