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| author | Mark Zhang <markz@mellanox.com> | 2019-07-02 13:02:32 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2019-07-05 16:22:54 +0300 |
| commit | 699a9c540a04d05aa342cd84606bc8b1e8c05b7b (patch) | |
| tree | f1e00adeb4379f2adff3b33f5f82bbb5bbd2f560 | |
| parent | 7ade1ff96c7aa7e10445688a433d7ae39a13c6c9 (diff) | |
| download | linux-699a9c540a04d05aa342cd84606bc8b1e8c05b7b.tar.xz | |
RDMA/restrack: Add an API to attach a task to a resource
Add rdma_restrack_attach_task() which is able to attach a task other then
"current" to a resource.
Signed-off-by: Mark Zhang <markz@mellanox.com>
Reviewed-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| -rw-r--r-- | drivers/infiniband/core/restrack.c | 14 | ||||
| -rw-r--r-- | drivers/infiniband/core/restrack.h | 2 |
2 files changed, 16 insertions, 0 deletions
diff --git a/drivers/infiniband/core/restrack.c b/drivers/infiniband/core/restrack.c index 95573f292aae..3714634ae296 100644 --- a/drivers/infiniband/core/restrack.c +++ b/drivers/infiniband/core/restrack.c @@ -194,6 +194,20 @@ void rdma_restrack_set_task(struct rdma_restrack_entry *res, } EXPORT_SYMBOL(rdma_restrack_set_task); +/** + * rdma_restrack_attach_task() - attach the task onto this resource + * @res: resource entry + * @task: the task to attach, the current task will be used if it is NULL. + */ +void rdma_restrack_attach_task(struct rdma_restrack_entry *res, + struct task_struct *task) +{ + if (res->task) + put_task_struct(res->task); + get_task_struct(task); + res->task = task; +} + static void rdma_restrack_add(struct rdma_restrack_entry *res) { struct ib_device *dev = res_to_dev(res); diff --git a/drivers/infiniband/core/restrack.h b/drivers/infiniband/core/restrack.h index 09a1fbdf578e..d084e5f89849 100644 --- a/drivers/infiniband/core/restrack.h +++ b/drivers/infiniband/core/restrack.h @@ -25,4 +25,6 @@ struct rdma_restrack_root { int rdma_restrack_init(struct ib_device *dev); void rdma_restrack_clean(struct ib_device *dev); +void rdma_restrack_attach_task(struct rdma_restrack_entry *res, + struct task_struct *task); #endif /* _RDMA_CORE_RESTRACK_H_ */ |