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| /openbmc/linux/drivers/xen/ |
| H A D | evtchn.c | diff 73cc4bb0c79eebe1f0e92b700d9fe8d1c9b061bb Fri Jul 19 09:52:00 CDT 2013 David Vrabel <david.vrabel@citrix.com> xen/evtchn: improve scalability by using per-user locks
The global array of port users and the port_user_lock limits
scalability of the evtchn device. Instead of the global array lookup,
use a per-use (per-fd) tree of event channels bound by that user and
protect the tree with a per-user lock.
This is also a prerequiste for extended the number of supported event
channels, by removing the fixed size, per-event channel array.
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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