[RFC PATCH rdma-next 12/14] RDMA/core: Add resource tracking for create and destroy PDs

[Leon Romanovsky <leon-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>]

From: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>

Track all creation and destroy of PD objects.

Reviewed-by: Mark Bloch <markb-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Signed-off-by: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
---
 drivers/infiniband/core/uverbs_cmd.c | 1 +
 drivers/infiniband/core/verbs.c      | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index f462bde6e3b4..ef50c919b09d 100644
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -340,6 +340,7 @@ ssize_t ib_uverbs_alloc_pd(struct ib_uverbs_file *file,
 	uobj->object = pd;
 	memset(&resp, 0, sizeof resp);
 	resp.pd_handle = uobj->id;
+	rdma_restrack_add(&pd->res, RDMA_RESTRACK_PD, NULL);

 	if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) {
 		ret = -EFAULT;
diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
index 1e023e2d1dde..8dd5ffc5de40 100644
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -246,6 +246,7 @@ struct ib_pd *__ib_alloc_pd(struct ib_device *device, unsigned int flags,
 		pr_warn("%s: enabling unsafe global rkey\n", caller);
 		mr_access_flags |= IB_ACCESS_REMOTE_READ | IB_ACCESS_REMOTE_WRITE;
 	}
+	rdma_restrack_add(&pd->res, RDMA_RESTRACK_PD, NULL);

 	if (mr_access_flags) {
 		struct ib_mr *mr;
@@ -296,6 +297,7 @@ void ib_dealloc_pd(struct ib_pd *pd)
 	   requires the caller to guarantee we can't race here. */
 	WARN_ON(atomic_read(&pd->usecnt));

+	rdma_restrack_del(&pd->res, RDMA_RESTRACK_PD);
 	/* Making delalloc_pd a void return is a WIP, no driver should return
 	   an error here. */
 	ret = pd->device->dealloc_pd(pd);
--
2.15.1

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