linux-stable.git/include/rdma/restrack.h, branch linux-5.0.y

RDMA/restrack: Resource-tracker should not use uobject pointers

2018-12-18T22:38:26+00:00

Having uobject pointer embedded in ib core objects is not aligned with a
future shared ib_x model. The resource tracker only does this to keep
track of user/kernel objects - track this directly instead.

Signed-off-by: Shamir Rabinovitch 
Signed-off-by: Jason Gunthorpe

RDMA/restrack: Track ucontext

2018-12-03T19:58:25+00:00

Add ability to track allocated ib_ucontext, which are limited
resource and worth to be visible by users.

Signed-off-by: Leon Romanovsky 
Signed-off-by: Doug Ledford

RDMA/restrack: Consolidate task name updates in one place

2018-10-05T22:07:39+00:00

Unify task update and kernel name set in one place.

Reviewed-by: Artemy Kovalyov 
Reviewed-by: Yossi Itigin 
Signed-off-by: Leon Romanovsky 
Reviewed-by: Steve Wise 
Signed-off-by: Jason Gunthorpe

RDMA/restrack: Un-inline set task implementation

2018-10-05T22:07:39+00:00

Prepare rdma_restrack_set_task() call to accommodate more
code by moving its implementation from *.h to *.c.

Reviewed-by: Artemy Kovalyov 
Reviewed-by: Yossi Itigin 
Signed-off-by: Leon Romanovsky 
Reviewed-by: Steve Wise 
Signed-off-by: Jason Gunthorpe

RDMA/restrack: Change SPDX tag to properly reflect license

2018-06-05T20:04:20+00:00

Resource tracking is supposed to be dual licensed: GPL-2.0 and
OpenIB, but the SPDX tag was not compliant to it. Update the tag to
properly reflect license.

Fixes: 02d8883f520e ("RDMA/restrack: Add general infrastructure to track RDMA resources")
Signed-off-by: Leon Romanovsky 
Signed-off-by: Jason Gunthorpe

RDMA/nldev: helper functions to add driver attributes

2018-05-03T19:51:27+00:00

These help rdma drivers to fill out the driver entries.

Signed-off-by: Steve Wise 
Signed-off-by: Doug Ledford

RDMA/nldev: add driver-specific resource tracking

2018-05-03T19:51:27+00:00

Each driver can register a "fill entry" function with the restrack core.
This function will be called when filling out a resource, allowing the
driver to add driver-specific details.  The details consist of a
nltable of nested attributes, that are in the form of  tuples.  Both key and value attributes are mandatory.  The key
nlattr must be a string, and the value nlattr can be one of the driver
attributes that are generic, but typed, allowing the attributes to be
validated.  Currently the driver nlattr types include string, s32,
u32, s64, and u64.  The print-type nlattr allows a driver to specify
an alternative display format for user tools displaying the attribute.
For example, a u32 attribute will default to "%u", but a print-type
attribute can be included for it to be displayed in hex.  This allows
the user tool to print the number in the format desired by the driver
driver.

More attrs can be defined as they become needed by drivers.

Signed-off-by: Steve Wise 
Reviewed-by: Leon Romanovsky 
Signed-off-by: Doug Ledford

RDMA/restrack: Remove ambiguity in resource track clean logic

2018-03-22T18:42:48+00:00

The restrack clean routine had simple, but powerful WARN_ON check
to see if all resources are cleared prior to releasing device.

The WARN_ON check performed very well, but lack of information
which device caused to resource leak, the object type and origin
made debug to be fun and challenging at the same time.

The fact that all dumps were the same because restrack_clean() is
called in dealloc() didn't help either.

So let's fix spelling error and convert WARN_ON to be more debug
friendly. The dmesg cut below gives example of how the output
will look output for the case fixed in patch [1]

[  438.421372] restrack: ------------[ cut here ]------------
[  438.423448] restrack: BUG: RESTRACK detected leak of resources on mlx5_2
[  438.425600] restrack: Kernel PD object allocated by mlx5_ib is not freed
[  438.427753] restrack: Kernel CQ object allocated by mlx5_ib is not freed
[  438.429660] restrack: ------------[ cut here ]------------

[1] https://patchwork.kernel.org/patch/10298695/

Cc: Michal Kalderon 
Cc: Chuck Lever 
Reviewed-by: Mark Bloch 
Signed-off-by: Leon Romanovsky 
Signed-off-by: Jason Gunthorpe

RDMA/nldev: provide detailed MR information

2018-03-08T20:03:03+00:00

Implement the RDMA nldev netlink interface for dumping detailed
MR information.

Signed-off-by: Steve Wise 
Reviewed-by: Leon Romanovsky 
Signed-off-by: Doug Ledford

RDMA/nldev: provide detailed CM_ID information

2018-03-08T20:03:03+00:00

Implement RDMA nldev netlink interface to get detailed CM_ID information.

Because cm_id's are attached to rdma devices in various work queue
contexts, the pid and task information at restrak_add() time is sometimes
not useful.  For example, an nvme/f host connection cm_id ends up being
bound to a device in a work queue context and the resulting pid at attach
time no longer exists after connection setup.  So instead we mark all
cm_id's created via the rdma_ucm as "user", and all others as "kernel".
This required tweaking the restrack code a little.  It also required
wrapping some rdma_cm functions to allow passing the module name string.

Signed-off-by: Steve Wise 
Reviewed-by: Leon Romanovsky 
Signed-off-by: Doug Ledford