RDMA/core: Delete function indirection for alloc/free kernel CQ

The ib_alloc_cq*() and ib_free_cq*() are solely kernel verbs to manage CQs
and doesn't need extra indirection just to call same functions with
constant parameter NULL as udata.

Link: https://lore.kernel.org/r/20200907120921.476363-6-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

diff --git a/drivers/infiniband/core/cq.c b/drivers/infiniband/core/cq.c
index 513825e..ab55640 100644 (file)
--- a/drivers/infiniband/core/cq.c
+++ b/drivers/infiniband/core/cq.c
@@ -197,24 +197,22 @@ static void ib_cq_completion_workqueue(struct ib_cq *cq, void *private)
 }
 
 /**
- * __ib_alloc_cq_user - allocate a completion queue
+ * __ib_alloc_cq        allocate a completion queue
  * @dev:               device to allocate the CQ for
  * @private:           driver private data, accessible from cq->cq_context
  * @nr_cqe:            number of CQEs to allocate
  * @comp_vector:       HCA completion vectors for this CQ
  * @poll_ctx:          context to poll the CQ from.
  * @caller:            module owner name.
- * @udata:             Valid user data or NULL for kernel object
  *
  * This is the proper interface to allocate a CQ for in-kernel users. A
  * CQ allocated with this interface will automatically be polled from the
  * specified context. The ULP must use wr->wr_cqe instead of wr->wr_id
  * to use this CQ abstraction.
  */
-struct ib_cq *__ib_alloc_cq_user(struct ib_device *dev, void *private,
-                                int nr_cqe, int comp_vector,
-                                enum ib_poll_context poll_ctx,
-                                const char *caller, struct ib_udata *udata)
+struct ib_cq *__ib_alloc_cq(struct ib_device *dev, void *private, int nr_cqe,
+                           int comp_vector, enum ib_poll_context poll_ctx,
+                           const char *caller)
 {
        struct ib_cq_init_attr cq_attr = {
                .cqe            = nr_cqe,
@@ -277,7 +275,7 @@ struct ib_cq *__ib_alloc_cq_user(struct ib_device *dev, void *private,
 out_destroy_cq:
        rdma_dim_destroy(cq);
        rdma_restrack_del(&cq->res);
-       cq->device->ops.destroy_cq(cq, udata);
+       cq->device->ops.destroy_cq(cq, NULL);
 out_free_wc:
        kfree(cq->wc);
 out_free_cq:
@@ -285,7 +283,7 @@ out_free_cq:
        trace_cq_alloc_error(nr_cqe, comp_vector, poll_ctx, ret);
        return ERR_PTR(ret);
 }
-EXPORT_SYMBOL(__ib_alloc_cq_user);
+EXPORT_SYMBOL(__ib_alloc_cq);
 
 /**
  * __ib_alloc_cq_any - allocate a completion queue
@@ -310,17 +308,16 @@ struct ib_cq *__ib_alloc_cq_any(struct ib_device *dev, void *private,
                        atomic_inc_return(&counter) %
                        min_t(int, dev->num_comp_vectors, num_online_cpus());
 
-       return __ib_alloc_cq_user(dev, private, nr_cqe, comp_vector, poll_ctx,
-                                 caller, NULL);
+       return __ib_alloc_cq(dev, private, nr_cqe, comp_vector, poll_ctx,
+                            caller);
 }
 EXPORT_SYMBOL(__ib_alloc_cq_any);
 
 /**
- * ib_free_cq_user - free a completion queue
+ * ib_free_cq - free a completion queue
  * @cq:                completion queue to free.
- * @udata:     User data or NULL for kernel object
  */
-void ib_free_cq_user(struct ib_cq *cq, struct ib_udata *udata)
+void ib_free_cq(struct ib_cq *cq)
 {
        if (WARN_ON_ONCE(atomic_read(&cq->usecnt)))
                return;
@@ -344,11 +341,11 @@ void ib_free_cq_user(struct ib_cq *cq, struct ib_udata *udata)
        rdma_dim_destroy(cq);
        trace_cq_free(cq);
        rdma_restrack_del(&cq->res);
-       cq->device->ops.destroy_cq(cq, udata);
+       cq->device->ops.destroy_cq(cq, NULL);
        kfree(cq->wc);
        kfree(cq);
 }
-EXPORT_SYMBOL(ib_free_cq_user);
+EXPORT_SYMBOL(ib_free_cq);
 
 void ib_cq_pool_init(struct ib_device *dev)
 {

diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 40bb6a4..b74fd1a 100644 (file)
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -3802,46 +3802,15 @@ static inline int ib_post_recv(struct ib_qp *qp,
        return qp->device->ops.post_recv(qp, recv_wr, bad_recv_wr ? : &dummy);
 }
 
-struct ib_cq *__ib_alloc_cq_user(struct ib_device *dev, void *private,
-                                int nr_cqe, int comp_vector,
-                                enum ib_poll_context poll_ctx,
-                                const char *caller, struct ib_udata *udata);
-
-/**
- * ib_alloc_cq_user: Allocate kernel/user CQ
- * @dev: The IB device
- * @private: Private data attached to the CQE
- * @nr_cqe: Number of CQEs in the CQ
- * @comp_vector: Completion vector used for the IRQs
- * @poll_ctx: Context used for polling the CQ
- * @udata: Valid user data or NULL for kernel objects
- */
-static inline struct ib_cq *ib_alloc_cq_user(struct ib_device *dev,
-                                            void *private, int nr_cqe,
-                                            int comp_vector,
-                                            enum ib_poll_context poll_ctx,
-                                            struct ib_udata *udata)
-{
-       return __ib_alloc_cq_user(dev, private, nr_cqe, comp_vector, poll_ctx,
-                                 KBUILD_MODNAME, udata);
-}
-
-/**
- * ib_alloc_cq: Allocate kernel CQ
- * @dev: The IB device
- * @private: Private data attached to the CQE
- * @nr_cqe: Number of CQEs in the CQ
- * @comp_vector: Completion vector used for the IRQs
- * @poll_ctx: Context used for polling the CQ
- *
- * NOTE: for user cq use ib_alloc_cq_user with valid udata!
- */
+struct ib_cq *__ib_alloc_cq(struct ib_device *dev, void *private, int nr_cqe,
+                           int comp_vector, enum ib_poll_context poll_ctx,
+                           const char *caller);
 static inline struct ib_cq *ib_alloc_cq(struct ib_device *dev, void *private,
                                        int nr_cqe, int comp_vector,
                                        enum ib_poll_context poll_ctx)
 {
-       return ib_alloc_cq_user(dev, private, nr_cqe, comp_vector, poll_ctx,
-                               NULL);
+       return __ib_alloc_cq(dev, private, nr_cqe, comp_vector, poll_ctx,
+                            KBUILD_MODNAME);
 }
 
 struct ib_cq *__ib_alloc_cq_any(struct ib_device *dev, void *private,
@@ -3863,26 +3832,7 @@ static inline struct ib_cq *ib_alloc_cq_any(struct ib_device *dev,
                                 KBUILD_MODNAME);
 }
 
-/**
- * ib_free_cq_user - Free kernel/user CQ
- * @cq: The CQ to free
- * @udata: Valid user data or NULL for kernel objects
- *
- * NOTE: This function shouldn't be called on shared CQs.
- */
-void ib_free_cq_user(struct ib_cq *cq, struct ib_udata *udata);
-
-/**
- * ib_free_cq - Free kernel CQ
- * @cq: The CQ to free
- *
- * NOTE: for user cq use ib_free_cq_user with valid udata!
- */
-static inline void ib_free_cq(struct ib_cq *cq)
-{
-       ib_free_cq_user(cq, NULL);
-}
-
+void ib_free_cq(struct ib_cq *cq);
 int ib_process_cq_direct(struct ib_cq *cq, int budget);
 
 /**