Linux-RDMA Archive on lore.kernel.org
 help / color / Atom feed
From: Yishai Hadas <yishaih@mellanox.com>
To: linux-rdma@vger.kernel.org, jgg@mellanox.com, dledford@redhat.com
Cc: yishaih@mellanox.com, maorg@mellanox.com, michaelgur@mellanox.com
Subject: [PATCH rdma-next 12/14] RDMA/core: Remove the ufile arg from rdma_alloc_begin_uobject
Date: Wed,  8 Jan 2020 19:22:04 +0200
Message-ID: <1578504126-9400-13-git-send-email-yishaih@mellanox.com> (raw)
In-Reply-To: <1578504126-9400-1-git-send-email-yishaih@mellanox.com>

From: Jason Gunthorpe <jgg@mellanox.com>

Now that all callers provide a non-NULL attrs the ufile is redundant.
Adjust things so that the context handling is done inside alloc_uobj,
and the ib_uverbs_get_ucontext_file() is avoided if we already have the
context.

Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
---
 drivers/infiniband/core/rdma_core.c | 36 +++++++++++++++++++-----------------
 include/rdma/uverbs_std_types.h     |  3 +--
 include/rdma/uverbs_types.h         |  3 +--
 3 files changed, 21 insertions(+), 21 deletions(-)

diff --git a/drivers/infiniband/core/rdma_core.c b/drivers/infiniband/core/rdma_core.c
index 8ad6883..f839b93 100644
--- a/drivers/infiniband/core/rdma_core.c
+++ b/drivers/infiniband/core/rdma_core.c
@@ -262,15 +262,20 @@ int __uobj_perform_destroy(const struct uverbs_api_object *obj, u32 id,
 }
 
 /* alloc_uobj must be undone by uverbs_destroy_uobject() */
-static struct ib_uobject *alloc_uobj(struct ib_uverbs_file *ufile,
+static struct ib_uobject *alloc_uobj(struct uverbs_attr_bundle *attrs,
 				     const struct uverbs_api_object *obj)
 {
+	struct ib_uverbs_file *ufile = attrs->ufile;
 	struct ib_uobject *uobj;
-	struct ib_ucontext *ucontext;
 
-	ucontext = ib_uverbs_get_ucontext_file(ufile);
-	if (IS_ERR(ucontext))
-		return ERR_CAST(ucontext);
+	if (!attrs->context) {
+		struct ib_ucontext *ucontext =
+			ib_uverbs_get_ucontext_file(ufile);
+
+		if (IS_ERR(ucontext))
+			return ERR_CAST(ucontext);
+		attrs->context = ucontext;
+	}
 
 	uobj = kzalloc(obj->type_attrs->obj_size, GFP_KERNEL);
 	if (!uobj)
@@ -280,7 +285,7 @@ static struct ib_uobject *alloc_uobj(struct ib_uverbs_file *ufile,
 	 * The object is added to the list in the commit stage.
 	 */
 	uobj->ufile = ufile;
-	uobj->context = ucontext;
+	uobj->context = attrs->context;
 	INIT_LIST_HEAD(&uobj->list);
 	uobj->uapi_object = obj;
 	/*
@@ -423,12 +428,12 @@ struct ib_uobject *rdma_lookup_get_uobject(const struct uverbs_api_object *obj,
 
 static struct ib_uobject *
 alloc_begin_idr_uobject(const struct uverbs_api_object *obj,
-			struct ib_uverbs_file *ufile)
+			struct uverbs_attr_bundle *attrs)
 {
 	int ret;
 	struct ib_uobject *uobj;
 
-	uobj = alloc_uobj(ufile, obj);
+	uobj = alloc_uobj(attrs, obj);
 	if (IS_ERR(uobj))
 		return uobj;
 
@@ -444,7 +449,7 @@ struct ib_uobject *rdma_lookup_get_uobject(const struct uverbs_api_object *obj,
 	return uobj;
 
 remove:
-	xa_erase(&ufile->idr, uobj->id);
+	xa_erase(&attrs->ufile->idr, uobj->id);
 uobj_put:
 	uverbs_uobject_put(uobj);
 	return ERR_PTR(ret);
@@ -452,7 +457,7 @@ struct ib_uobject *rdma_lookup_get_uobject(const struct uverbs_api_object *obj,
 
 static struct ib_uobject *
 alloc_begin_fd_uobject(const struct uverbs_api_object *obj,
-		       struct ib_uverbs_file *ufile)
+		       struct uverbs_attr_bundle *attrs)
 {
 	const struct uverbs_obj_fd_type *fd_type =
 		container_of(obj->type_attrs, struct uverbs_obj_fd_type, type);
@@ -467,7 +472,7 @@ struct ib_uobject *rdma_lookup_get_uobject(const struct uverbs_api_object *obj,
 	if (new_fd < 0)
 		return ERR_PTR(new_fd);
 
-	uobj = alloc_uobj(ufile, obj);
+	uobj = alloc_uobj(attrs, obj);
 	if (IS_ERR(uobj))
 		goto err_fd;
 
@@ -481,7 +486,6 @@ struct ib_uobject *rdma_lookup_get_uobject(const struct uverbs_api_object *obj,
 	uobj->object = filp;
 
 	uobj->id = new_fd;
-	uobj->ufile = ufile;
 	return uobj;
 
 err_uobj:
@@ -492,9 +496,9 @@ struct ib_uobject *rdma_lookup_get_uobject(const struct uverbs_api_object *obj,
 }
 
 struct ib_uobject *rdma_alloc_begin_uobject(const struct uverbs_api_object *obj,
-					    struct ib_uverbs_file *ufile,
 					    struct uverbs_attr_bundle *attrs)
 {
+	struct ib_uverbs_file *ufile = attrs->ufile;
 	struct ib_uobject *ret;
 
 	if (IS_ERR(obj))
@@ -508,13 +512,11 @@ struct ib_uobject *rdma_alloc_begin_uobject(const struct uverbs_api_object *obj,
 	if (!down_read_trylock(&ufile->hw_destroy_rwsem))
 		return ERR_PTR(-EIO);
 
-	ret = obj->type_class->alloc_begin(obj, ufile);
+	ret = obj->type_class->alloc_begin(obj, attrs);
 	if (IS_ERR(ret)) {
 		up_read(&ufile->hw_destroy_rwsem);
 		return ret;
 	}
-	if (attrs)
-		attrs->context = ret->context;
 	return ret;
 }
 
@@ -949,7 +951,7 @@ struct ib_uobject *
 		return rdma_lookup_get_uobject(obj, attrs->ufile, id,
 					       UVERBS_LOOKUP_WRITE, attrs);
 	case UVERBS_ACCESS_NEW:
-		return rdma_alloc_begin_uobject(obj, attrs->ufile, attrs);
+		return rdma_alloc_begin_uobject(obj, attrs);
 	default:
 		WARN_ON(true);
 		return ERR_PTR(-EOPNOTSUPP);
diff --git a/include/rdma/uverbs_std_types.h b/include/rdma/uverbs_std_types.h
index c6bcaad..1b28ce1 100644
--- a/include/rdma/uverbs_std_types.h
+++ b/include/rdma/uverbs_std_types.h
@@ -114,8 +114,7 @@ static inline void uobj_alloc_abort(struct ib_uobject *uobj,
 __uobj_alloc(const struct uverbs_api_object *obj,
 	     struct uverbs_attr_bundle *attrs, struct ib_device **ib_dev)
 {
-	struct ib_uobject *uobj =
-		rdma_alloc_begin_uobject(obj, attrs->ufile, attrs);
+	struct ib_uobject *uobj = rdma_alloc_begin_uobject(obj, attrs);
 
 	if (!IS_ERR(uobj))
 		*ib_dev = attrs->context->device;
diff --git a/include/rdma/uverbs_types.h b/include/rdma/uverbs_types.h
index 0532588..ded608b 100644
--- a/include/rdma/uverbs_types.h
+++ b/include/rdma/uverbs_types.h
@@ -83,7 +83,7 @@ enum rdma_lookup_mode {
  */
 struct uverbs_obj_type_class {
 	struct ib_uobject *(*alloc_begin)(const struct uverbs_api_object *obj,
-					  struct ib_uverbs_file *ufile);
+					  struct uverbs_attr_bundle *attrs);
 	/* This consumes the kref on uobj */
 	void (*alloc_commit)(struct ib_uobject *uobj);
 	/* This does not consume the kref on uobj */
@@ -138,7 +138,6 @@ struct ib_uobject *rdma_lookup_get_uobject(const struct uverbs_api_object *obj,
 void rdma_lookup_put_uobject(struct ib_uobject *uobj,
 			     enum rdma_lookup_mode mode);
 struct ib_uobject *rdma_alloc_begin_uobject(const struct uverbs_api_object *obj,
-					    struct ib_uverbs_file *ufile,
 					    struct uverbs_attr_bundle *attrs);
 void rdma_alloc_abort_uobject(struct ib_uobject *uobj,
 			      struct uverbs_attr_bundle *attrs);
-- 
1.8.3.1


  parent reply index

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-08 17:21 [PATCH rdma-next 00/14] Refactoring FD usage Yishai Hadas
2020-01-08 17:21 ` [PATCH rdma-next 01/14] RDMA/mlx5: Use RCU and direct refcounts to keep memory alive Yishai Hadas
2020-01-08 17:21 ` [PATCH rdma-next 02/14] RDMA/core: Simplify destruction of FD uobjects Yishai Hadas
2020-01-08 17:21 ` [PATCH rdma-next 03/14] RDMA/mlx5: Simplify devx async commands Yishai Hadas
2020-01-08 17:21 ` [PATCH rdma-next 04/14] RDMA/core: Do not allow alloc_commit to fail Yishai Hadas
2020-01-08 17:21 ` [PATCH rdma-next 05/14] RDMA/core: Make ib_ucq_object use ib_uevent_object Yishai Hadas
2020-01-08 17:21 ` [PATCH rdma-next 06/14] RDMA/core: Do not erase the type of ib_cq.uobject Yishai Hadas
2020-01-08 17:21 ` [PATCH rdma-next 07/14] RDMA/core: Do not erase the type of ib_qp.uobject Yishai Hadas
2020-01-08 17:22 ` [PATCH rdma-next 08/14] RDMA/core: Do not erase the type of ib_srq.uobject Yishai Hadas
2020-01-08 17:22 ` [PATCH rdma-next 09/14] RDMA/core: Do not erase the type of ib_wq.uobject Yishai Hadas
2020-01-08 17:22 ` [PATCH rdma-next 10/14] RDMA/core: Simplify type usage for ib_uverbs_async_handler() Yishai Hadas
2020-01-08 17:22 ` [PATCH rdma-next 11/14] RDMA/core: Fix locking in ib_uverbs_event_read Yishai Hadas
2020-01-10 14:54   ` Jason Gunthorpe
2020-01-08 17:22 ` Yishai Hadas [this message]
2020-01-08 17:22 ` [PATCH rdma-next 13/14] RDMA/core: Make ib_uverbs_async_event_file into a uobject Yishai Hadas
2020-01-08 17:22 ` [PATCH rdma-next 14/14] RDMA/core: Use READ_ONCE for ib_ufile.async_file Yishai Hadas
2020-01-13 20:37 ` [PATCH rdma-next 00/14] Refactoring FD usage Jason Gunthorpe

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1578504126-9400-13-git-send-email-yishaih@mellanox.com \
    --to=yishaih@mellanox.com \
    --cc=dledford@redhat.com \
    --cc=jgg@mellanox.com \
    --cc=linux-rdma@vger.kernel.org \
    --cc=maorg@mellanox.com \
    --cc=michaelgur@mellanox.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-RDMA Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-rdma/0 linux-rdma/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-rdma linux-rdma/ https://lore.kernel.org/linux-rdma \
		linux-rdma@vger.kernel.org
	public-inbox-index linux-rdma

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-rdma


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git