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e951747a08
linux/drivers/infiniband/core
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Jason Gunthorpe e951747a08 IB/uverbs: Rework the locking for cleaning up the ucontext 
The locking here has always been a bit crazy and spread out, upon some
careful analysis we can simplify things.

Create a single function uverbs_destroy_ufile_hw() that internally handles
all locking. This pulls together pieces of this process that were
sprinkled all over the places into one place, and covers them with one
lock.

This eliminates several duplicate/confusing locks and makes the control
flow in ib_uverbs_close() and ib_uverbs_free_hw_resources() extremely
simple.

Unfortunately we have to keep an extra mutex, ucontext_lock.  This lock is
logically part of the rwsem and provides the 'down write, fail if write
locked, wait if read locked' semantic we require.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-07-25 14:21:22 -06:00
..
addr.c IB/cm: Remove now useless rcu_lock in dst_fetch_ha 2018-06-29 11:45:50 -06:00
agent.c IB/core: Rename ib_destroy_ah to rdma_destroy_ah 2017-05-01 14:32:43 -04:00
agent.h
cache.c RDMA/core: Remove set-but-not-used variables 2018-07-09 12:11:22 -06:00
cgroup.c IB/core: added support to use rdma cgroup controller 2017-01-10 11:14:27 -05:00
cm_msgs.h IB/cm: Remove unused and erroneous msg sequence encoding 2018-07-09 11:39:28 -06:00
cm.c IB/cm: Remove unused and erroneous msg sequence encoding 2018-07-09 11:39:28 -06:00
cma_configfs.c IB/cma: use strlcpy() instead of strncpy() 2018-01-15 15:33:21 -07:00
cma_priv.h RDMA/cma: Move rdma_cm_state to cma_priv.h 2018-03-29 13:54:21 -06:00
cma.c IB/cm: Remove cma_multicast->igmp_joined 2018-07-13 12:18:55 -06:00
core_priv.h RDMA/core: Remove indirection through ib_cache_setup() 2018-05-29 15:19:31 -06:00
cq.c RDMA/core: Reduce poll batch for direct cq polling 2018-03-06 20:08:39 -07:00
device.c IB: Replace ib_query_gid/ib_get_cached_gid with rdma_query_gid 2018-06-18 11:09:05 -06:00
fmr_pool.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
iwcm.c RDMA/netlink: Fix general protection fault 2017-12-07 15:28:07 -05:00
iwcm.h
iwpm_msg.c RDMA/iwpm: Properly mark end of NL messages 2017-09-29 11:32:42 -04:00
iwpm_util.c treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
iwpm_util.h
mad_priv.h IB/mad: Use IDR for agent IDs 2018-06-18 11:22:54 -06:00
mad_rmpp.c IB/mad: Change slid in RMPP recv from 16 to 32 bits 2017-08-08 14:47:18 -04:00
mad_rmpp.h
mad.c RDMA/core: Simplify ib_post_(send|recv|srq_recv)() calls 2018-07-24 16:06:36 -06:00
Makefile Verbs flow counters support 2018-06-04 08:48:11 -06:00
mr_pool.c
multicast.c IB: Make ib_init_ah_from_mcmember set sgid_attr 2018-06-25 14:19:56 -06:00
netlink.c RDMA/netlink: Simplify code of autoload modules 2018-01-02 13:36:57 -07:00
nldev.c RDMA/nldev: Return port capability flag for IB only 2018-06-18 11:09:05 -06:00
opa_smi.h
packer.c
rdma_core.c IB/uverbs: Rework the locking for cleaning up the ucontext 2018-07-25 14:21:22 -06:00
rdma_core.h IB/uverbs: Rework the locking for cleaning up the ucontext 2018-07-25 14:21:22 -06:00
restrack.c RDMA/restrack: Change SPDX tag to properly reflect license 2018-06-05 14:04:20 -06:00
roce_gid_mgmt.c IB/core: Remove duplicate declaration of gid_cache_wq 2018-05-24 09:39:25 -06:00
rw.c RDMA/core: Simplify ib_post_(send|recv|srq_recv)() calls 2018-07-24 16:06:36 -06:00
sa_query.c RDMA: Validate grh_required when handling AVs 2018-07-10 11:13:04 -06:00
sa.h
security.c IB/core: Use CONFIG_SECURITY_INFINIBAND to compile out security code 2018-05-01 11:16:36 -04:00
smi.c
smi.h
sysfs.c IB/core: Replace ib_query_gid with rdma_get_gid_attr 2018-06-18 11:09:05 -06:00
ucm.c RDMA: Use u64_to_user_ptr everywhere 2018-03-29 13:42:29 -06:00
ucma.c infiniband: fix a possible use-after-free bug 2018-06-04 09:37:03 -06:00
ud_header.c
umem_odp.c treewide: Use array_size() in vzalloc() 2018-06-12 16:19:22 -07:00
umem.c RDMA/umem: Refactor exit paths in ib_umem_get 2018-07-13 12:15:05 -06:00
user_mad.c IB: Make ib_init_ah_attr_from_wc set sgid_attr 2018-06-25 14:19:56 -06:00
uverbs_cmd.c IB/uverbs: Rework the locking for cleaning up the ucontext 2018-07-25 14:21:22 -06:00
uverbs_ioctl_merge.c RDMA/uverbs: Combine MIN_SZ_OR_ZERO with UVERBS_ATTR_STRUCT 2018-07-04 13:47:01 -06:00
uverbs_ioctl.c IB/uverbs: Handle IDR and FD types without truncation 2018-07-25 14:21:21 -06:00
uverbs_main.c IB/uverbs: Rework the locking for cleaning up the ucontext 2018-07-25 14:21:22 -06:00
uverbs_marshall.c IB/cm: Replace members of sa_path_rec with 'struct sgid_attr *' 2018-06-25 14:19:57 -06:00
uverbs_std_types_counters.c RDMA/uverbs: Use UVERBS_ATTR_MIN_SIZE correctly and uniformly 2018-07-04 13:47:01 -06:00
uverbs_std_types_cq.c IB/uverbs: Do not use uverbs_cmd_mask in the ioctl path 2018-07-09 13:19:01 -06:00
uverbs_std_types_dm.c IB/uverbs: Tidy up remaining references to ucontext 2018-07-09 11:26:17 -06:00
uverbs_std_types_flow_action.c IB/mlx5: Introduce flow steering matcher uapi object 2018-07-24 13:34:37 -06:00
uverbs_std_types_mr.c RDMA/uverbs: Remove UA_FLAGS 2018-07-04 13:47:01 -06:00
uverbs_std_types.c IB: Support ib_flow creation in drivers 2018-07-24 13:34:55 -06:00
uverbs.h IB/uverbs: Rework the locking for cleaning up the ucontext 2018-07-25 14:21:22 -06:00
verbs.c RDMA/core: Simplify ib_post_(send|recv|srq_recv)() calls 2018-07-24 16:06:36 -06:00