kernel/linux.git/include/rdma/restrack.h, branch v5.10.141

RDMA/restrack: Improve readability in task name management

2020-09-22T22:47:35+00:00

Use rdma_restrack_set_name() and rdma_restrack_parent_name() instead of tricky uses of rdma_restrack_attach_task()/rdma_restrack_uadd(). This uniformly makes all restracks add'd using rdma_restrack_add(). Link: https://lore.kernel.org/r/20200922091106.2152715-6-leon@kernel.org Signed-off-by: Leon Romanovsky Signed-off-by: Jason Gunthorpe

RDMA/restrack: Simplify restrack tracking in kernel flows

2020-09-22T22:47:35+00:00

Have a single rdma_restrack_add() that adds an entry, there is no reason to split the user/kernel here, the rdma_restrack_set_task() is responsible for this difference. This patch prepares the code to the future requirement of making restrack is mandatory for managing ib objects. Link: https://lore.kernel.org/r/20200922091106.2152715-5-leon@kernel.org Signed-off-by: Leon Romanovsky Signed-off-by: Jason Gunthorpe

RDMA/restrack: Count references to the verbs objects

2020-09-22T22:47:35+00:00

Refactor the restrack code to make sure the kref inside the restrack entry properly kref's the object in which it is embedded. This slight change is needed for future conversions of MR and QP which are refcounted before the release and kfree. The ideal flow from ib_core perspective as follows: * Allocate ib_* structure with rdma_zalloc_*. * Set everything that is known to ib_core to that newly created object. * Initialize kref with restrack help * Call to driver specific allocation functions. * Insert into restrack DB .... * Return and release restrack with restrack_put. Largely this means a rdma_restrack_new() should be called near allocating the containing structure. Link: https://lore.kernel.org/r/20200922091106.2152715-4-leon@kernel.org Signed-off-by: Leon Romanovsky Signed-off-by: Jason Gunthorpe

RDMA/nldev: Provide MR statistics

2019-10-22T18:33:31+00:00

Add RDMA nldev netlink interface for dumping MR statistics information. Output example: $ ./ibv_rc_pingpong -o -P -s 500000000 local address: LID 0x0001, QPN 0x00008a, PSN 0xf81096, GID :: $ rdma stat show mr dev mlx5_0 mrn 2 page_faults 122071 page_invalidations 0 Link: https://lore.kernel.org/r/20191016062308.11886-5-leon@kernel.org Signed-off-by: Erez Alfasi Signed-off-by: Leon Romanovsky Reviewed-by: Jason Gunthorpe Signed-off-by: Jason Gunthorpe

RDMA/mlx5: Return ODP type per MR

2019-10-22T18:22:47+00:00

Provide an ODP explicit/implicit type as part of 'rdma -dd resource show mr' dump. For example: $ rdma -dd resource show mr dev mlx5_0 mrn 1 rkey 0xa99a lkey 0xa99a mrlen 50000000 pdn 9 pid 7372 comm ibv_rc_pingpong drv_odp explicit For non-ODP MRs, we won't print "drv_odp ..." at all. Link: https://lore.kernel.org/r/20191016062308.11886-4-leon@kernel.org Signed-off-by: Erez Alfasi Signed-off-by: Leon Romanovsky Reviewed-by: Jason Gunthorpe Signed-off-by: Jason Gunthorpe

RDMA/restrack: Rewrite PID namespace check to be reliable

2019-08-20T17:44:44+00:00

task_active_pid_ns() is wrong API to check PID namespace because it posses some restrictions and return PID namespace where the process was allocated. It created mismatches with current namespace, which can be different. Rewrite whole rdma_is_visible_in_pid_ns() logic to provide reliable results without any relation to allocated PID namespace. Fixes: 8be565e65fa9 ("RDMA/nldev: Factor out the PID namespace check") Fixes: 6a6c306a09b5 ("RDMA/restrack: Make is_visible_in_pid_ns() as an API") Reviewed-by: Mark Zhang Signed-off-by: Leon Romanovsky Link: https://lore.kernel.org/r/20190815083834.9245-4-leon@kernel.org Signed-off-by: Doug Ledford

RDMA/core: Make rdma_counter.h compile stand alone

2019-07-09T12:44:47+00:00

5.4-rc1 will have new compile time debugging to test that headers can be compiled stand alone. Many rdma headers are already broken and excluded from the mechanism, however to avoid compile failures during the merge window fix enough so that the newly added header compiles clean. Fixes: 413d3347503b ("RDMA/counter: Add set/clear per-port auto mode support") Reported-by: Stephen Rothwell Signed-off-by: Jason Gunthorpe Signed-off-by: Mark Zhang

RDMA/restrack: Introduce statistic counter

2019-07-05T13:22:54+00:00

Introduce statistic counter as a new resource. It allows a user to monitor specific objects (e.g., QPs) by binding to a counter. In some cases a user counter resource is created with task other then "current", because its creation is done as part of rdmatool call. Signed-off-by: Mark Zhang Reviewed-by: Majd Dibbiny Signed-off-by: Leon Romanovsky Signed-off-by: Jason Gunthorpe

RDMA/restrack: Hide restrack DB from IB/core

2019-02-19T04:04:36+00:00

There is no need to expose internals of restrack DB to IB/core. Signed-off-by: Leon Romanovsky Signed-off-by: Jason Gunthorpe

RDMA/restrack: Reduce scope of synchronization lock while updating DB

2019-02-19T04:04:36+00:00

XArray uses internal lock for updates to XArray. This means that our external RW lock is needed to ensure that entry is not deleted while we are performing iteration over list. Signed-off-by: Leon Romanovsky Signed-off-by: Jason Gunthorpe