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| author |   Eliezer Tamir <eliezer.tamir@linux.intel.com> | 2013-06-24 10:28:03 +0300 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2013-06-25 16:35:52 -0700 |
| commit | 2d48d67fa8cd129ea85ea02d91b4a793286866f8 (patch) | |
| tree | be47e2406605760d949b08d29d988d46c4a20799 /net/core/sysctl_net_core.c | |
| parent | ethernet/arc/arc_emac - Add new driver (diff) | |
| download | linux-dev-2d48d67fa8cd129ea85ea02d91b4a793286866f8.tar.xz linux-dev-2d48d67fa8cd129ea85ea02d91b4a793286866f8.zip | |
net: poll/select low latency socket support
select/poll busy-poll support.
Split sysctl value into two separate ones, one for read and one for poll.
updated Documentation/sysctl/net.txt
Add a new poll flag POLL_LL. When this flag is set, sock_poll will call
sk_poll_ll if possible. sock_poll sets this flag in its return value
to indicate to select/poll when a socket that can busy poll is found.
When poll/select have nothing to report, call the low-level
sock_poll again until we are out of time or we find something.
Once the system call finds something, it stops setting POLL_LL, so it can
return the result to the user ASAP.
Signed-off-by: Eliezer Tamir <eliezer.tamir@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/sysctl_net_core.c')
| -rw-r--r-- | net/core/sysctl_net_core.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/net/core/sysctl_net_core.c b/net/core/sysctl_net_core.c index 62702c2053de..afc677eadd93 100644 --- a/net/core/sysctl_net_core.c +++ b/net/core/sysctl_net_core.c @@ -306,6 +306,14 @@ static struct ctl_table net_core_table[] = { .mode = 0644, .proc_handler = proc_dointvec }, + { + .procname = "low_latency_read", + .data = &sysctl_net_ll_read, + .maxlen = sizeof(unsigned int), + .mode = 0644, + .proc_handler = proc_dointvec + }, +# #endif #endif /* CONFIG_NET */ { |