linux-stable.git/drivers/infiniband, branch v3.10

Merge branches 'iser' and 'qib' into for-next

2013-06-05T00:06:46+00:00

IB/qib: Fix lockdep splat in qib_alloc_lkey()

2013-06-05T00:05:20+00:00

The following backtrace is reported with CONFIG_PROVE_RCU:

    drivers/infiniband/hw/qib/qib_keys.c:64 suspicious rcu_dereference_check() usage!
    other info that might help us debug this:
    rcu_scheduler_active = 1, debug_locks = 1
    4 locks held by kworker/0:1/56:
    #0:  (events){.+.+.+}, at: [] process_one_work+0x165/0x4a0
    #1:  ((&wfc.work)){+.+.+.}, at: [] process_one_work+0x165/0x4a0
    #2:  (device_mutex){+.+.+.}, at: [] ib_register_device+0x38/0x220 [ib_core]
    #3:  (&(&dev->lk_table.lock)->rlock){......}, at: [] qib_alloc_lkey+0x3c/0x1b0 [ib_qib]

    stack backtrace:
    Pid: 56, comm: kworker/0:1 Not tainted 3.10.0-rc1+ #6
    Call Trace:
    [] lockdep_rcu_suspicious+0xe5/0x130
    [] qib_alloc_lkey+0x101/0x1b0 [ib_qib]
    [] qib_get_dma_mr+0xa6/0xd0 [ib_qib]
    [] ib_get_dma_mr+0x1a/0x50 [ib_core]
    [] ib_mad_port_open+0x12c/0x390 [ib_mad]
    [] ?  trace_hardirqs_on_caller+0x105/0x190
    [] ib_mad_init_device+0x52/0x110 [ib_mad]
    [] ?  sl2vl_attr_show+0x30/0x30 [ib_qib]
    [] ib_register_device+0x1a9/0x220 [ib_core]
    [] qib_register_ib_device+0x735/0xa40 [ib_qib]
    [] ? mod_timer+0x118/0x220
    [] qib_init_one+0x1e5/0x400 [ib_qib]
    [] local_pci_probe+0x4e/0x90
    [] work_for_cpu_fn+0x18/0x30
    [] process_one_work+0x1d6/0x4a0
    [] ?  process_one_work+0x165/0x4a0
    [] worker_thread+0x119/0x370
    [] ?  manage_workers+0x180/0x180
    [] kthread+0xee/0x100
    [] ?  __init_kthread_worker+0x70/0x70
    [] ret_from_fork+0x7c/0xb0
    [] ?  __init_kthread_worker+0x70/0x70

Per Documentation/RCU/lockdep-splat.txt, the code now uses rcu_access_pointer()
vs. rcu_dereference().

Reported-by: Jay Fenlason 
Reviewed-by: Dean Luick 
Signed-off-by: Mike Marciniszyn 
Signed-off-by: Roland Dreier

IB/iser: Add Mellanox copyright

2013-06-05T00:03:12+00:00

Add Mellanox copyright to the iser initiator source code which I maintain.

Signed-off-by: Or Gerlitz 
Signed-off-by: Roland Dreier

IB/iser: Fix device removal flow

2013-06-05T00:03:11+00:00

Change the code to destroy the "last opened" rdma_cm id after making
sure we released all other objects (QP, CQs, PD, etc) associated with
the IB device.

Since iser accesses the IB device using the rdma_cm id, we need to
free any objects that are related to the device that is associated
with the rdma_cm id prior to destroying that id.  When this isn't
done, the low level driver that created this device can be unloaded
before iser has a chance to free all the objects and a such a call may
invoke code segment which isn't valid any more and crash.

Cc: Sean Hefty 
Signed-off-by: Or Gerlitz 
Signed-off-by: Roland Dreier

ib_srpt: Call target_sess_cmd_list_set_waiting during shutdown_session

2013-05-30T04:30:46+00:00

Given that srpt_release_channel_work() calls target_wait_for_sess_cmds()
to allow outstanding se_cmd_t->cmd_kref a change to complete, the call
to perform target_sess_cmd_list_set_waiting() needs to happen in
srpt_shutdown_session()

Also, this patch adds an explicit call to srpt_shutdown_session() within
srpt_drain_channel() so that target_sess_cmd_list_set_waiting() will be
called in the cases where TFO->shutdown_session() is not triggered
directly by TCM.

Cc: Joern Engel 
Cc: Roland Dreier 
Cc: stable@vger.kernel.org
Signed-off-by: Nicholas Bellinger

target: Remove unused wait_for_tasks bit in target_wait_for_sess_cmds

2013-05-21T04:44:10+00:00

Drop unused transport_wait_for_tasks() check in target_wait_for_sess_cmds
shutdown code, and convert tcm_qla2xxx + ib_srpt fabric drivers.

Cc: Joern Engel 
Cc: Roland Dreier 
Signed-off-by: Nicholas Bellinger

Merge tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband

2013-05-08T22:29:48+00:00

Pull InfiniBand/RDMA changes from Roland Dreier:
 - XRC transport fixes
 - Fix DHCP on IPoIB
 - mlx4 preparations for flow steering
 - iSER fixes
 - miscellaneous other fixes

* tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: (23 commits)
  IB/iser: Add support for iser CM REQ additional info
  IB/iser: Return error to upper layers on EAGAIN registration failures
  IB/iser: Move informational messages from error to info level
  IB/iser: Add module version
  mlx4_core: Expose a few helpers to fill DMFS HW strucutures
  mlx4_core: Directly expose fields of DMFS HW rule control segment
  mlx4_core: Change a few DMFS fields names to match firmare spec
  mlx4: Match DMFS promiscuous field names to firmware spec
  mlx4_core: Move DMFS HW structs to common header file
  IB/mlx4: Set link type for RAW PACKET QPs in the QP context
  IB/mlx4: Disable VLAN stripping for RAW PACKET QPs
  mlx4_core: Reduce warning message for SRQ_LIMIT event to debug level
  RDMA/iwcm: Don't touch cmid after dropping reference
  IB/qib: Correct qib_verbs_register_sysfs() error handling
  IB/ipath: Correct ipath_verbs_register_sysfs() error handling
  RDMA/cxgb4: Fix SQ allocation when on-chip SQ is disabled
  SRPT: Fix odd use of WARN_ON()
  IPoIB: Fix ipoib_hard_header() return value
  RDMA: Rename random32() to prandom_u32()
  RDMA/cxgb3: Fix uninitialized variable
  ...

Merge branches 'cxgb4', 'ipoib', 'iser', 'misc', 'mlx4', 'qib' and 'srp' into for-next

2013-05-08T21:12:37+00:00

aio: don't include aio.h in sched.h

2013-05-08T03:16:25+00:00

Faster kernel compiles by way of fewer unnecessary includes.

[akpm@linux-foundation.org: fix fallout]
[akpm@linux-foundation.org: fix build]
Signed-off-by: Kent Overstreet 
Cc: Zach Brown 
Cc: Felipe Balbi 
Cc: Greg Kroah-Hartman 
Cc: Mark Fasheh 
Cc: Joel Becker 
Cc: Rusty Russell 
Cc: Jens Axboe 
Cc: Asai Thambi S P 
Cc: Selvan Mani 
Cc: Sam Bradshaw 
Cc: Jeff Moyer 
Cc: Al Viro 
Cc: Benjamin LaHaise 
Reviewed-by: "Theodore Ts'o" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

drivers/infiniband/hw: rename random32() to prandom_u32()

2013-05-08T01:38:27+00:00

Use preferable function name which implies using a pseudo-random number
generator.

Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds