kernel_optimize_test/include
Yishai Hadas 036b106357 IB/uverbs: Enable device removal when there are active user space applications
Enables the uverbs_remove_one to succeed despite the fact that there are
running IB applications working with the given ib device.  This
functionality enables a HW device to be unbind/reset despite the fact that
there are running user space applications using it.

It exposes a new IB kernel API named 'disassociate_ucontext' which lets
a driver detaching its HW resources from a given user context without
crashing/terminating the application. In case a driver implemented the
above API and registered with ib_uverb there will be no dependency between its
device to its uverbs_device. Upon calling remove_one of ib_uverbs the call
should return after disassociating the open HW resources without waiting to
clients disconnecting. In case driver didn't implement this API there will be no
change to current behaviour and uverbs_remove_one will return only when last
client has disconnected and reference count on uverbs device became 0.

In case the lower driver device was removed any application will
continue working over some zombie HCA, further calls will ended with an
immediate error.

Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Shachar Raindel <raindel@mellanox.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-08-30 18:12:40 -04:00
..
acpi
asm-generic mm: clean up per architecture MM hook header files 2015-07-17 16:39:53 -07:00
clocksource
crypto
drm drm/edid: add function to help find SADs 2015-08-20 09:46:08 +10:00
dt-bindings
keys
kvm
linux IB/mlx4: Implement ib_device callbacks 2015-08-30 18:12:20 -04:00
math-emu
media media fixes for v4.2-rc8 2015-08-21 11:03:06 -07:00
memory
misc
net net/bonding: Export bond_option_active_slave_get_rcu 2015-08-30 18:08:50 -04:00
pcmcia
ras
rdma IB/uverbs: Enable device removal when there are active user space applications 2015-08-30 18:12:40 -04:00
rxrpc
scsi Merge branch 'for-4.2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata 2015-08-17 16:20:45 -07:00
soc
sound ASoC: topology: Add Kconfig option for topology 2015-08-17 22:45:47 -07:00
target iscsi-target: Fix iscsit_start_kthreads failure OOPs 2015-07-24 14:19:43 -07:00
trace
uapi IB/netlink: Add defines for local service requests through netlink 2015-08-30 18:12:25 -04:00
video
xen
Kbuild