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From: Bob Pearson <rpearsonhpe@gmail.com>
To: jgg@nvidia.com, zyjzyj2000@gmail.com, linux-rdma@vger.kernel.org
Cc: Bob Pearson <rpearson@hpe.com>
Subject: [PATCH for-next 3/5] RDMA/rxe: Remove RXE_POOL_ATOMIC
Date: Thu, 21 Jan 2021 22:23:11 -0600	[thread overview]
Message-ID: <20210122042313.3336-4-rpearson@hpe.com> (raw)
In-Reply-To: <20210122042313.3336-1-rpearson@hpe.com>

rxe_alloc() used the RXE_POOL_ATOMIC flag in rxe_type_info
to select GFP_ATOMIC in calls to kzalloc(). This was intended
to handle cases where an object could be created in interrupt
context. This no longer occurs since allocating those objects
has moved into the core so this flag is not necessary. An
incorrect use of this flag was still present for rxe_mc_elem
objects and is removed.

Signed-off-by: Bob Pearson <rpearson@hpe.com>
---
 drivers/infiniband/sw/rxe/rxe_pool.c | 6 +-----
 drivers/infiniband/sw/rxe/rxe_pool.h | 1 -
 2 files changed, 1 insertion(+), 6 deletions(-)

diff --git a/drivers/infiniband/sw/rxe/rxe_pool.c b/drivers/infiniband/sw/rxe/rxe_pool.c
index 80deec1e2924..7e68f99558a7 100644
--- a/drivers/infiniband/sw/rxe/rxe_pool.c
+++ b/drivers/infiniband/sw/rxe/rxe_pool.c
@@ -84,7 +84,6 @@ struct rxe_type_info rxe_type_info[RXE_NUM_TYPES] = {
 		.name		= "rxe-mc_elem",
 		.size		= sizeof(struct rxe_mc_elem),
 		.elem_offset	= offsetof(struct rxe_mc_elem, pelem),
-		.flags		= RXE_POOL_ATOMIC,
 	},
 };
 
@@ -380,8 +379,6 @@ void *rxe_alloc(struct rxe_pool *pool)
 	struct rxe_pool_entry *elem;
 	u8 *obj;
 
-	might_sleep_if(!(pool->flags & RXE_POOL_ATOMIC));
-
 	read_lock_irqsave(&pool->pool_lock, flags);
 	if (pool->state != RXE_POOL_STATE_VALID) {
 		read_unlock_irqrestore(&pool->pool_lock, flags);
@@ -397,8 +394,7 @@ void *rxe_alloc(struct rxe_pool *pool)
 	if (atomic_inc_return(&pool->num_elem) > pool->max_elem)
 		goto out_cnt;
 
-	obj = kzalloc(info->size, (pool->flags & RXE_POOL_ATOMIC) ?
-		      GFP_ATOMIC : GFP_KERNEL);
+	obj = kzalloc(info->size, GFP_KERNEL);
 	if (!obj)
 		goto out_cnt;
 
diff --git a/drivers/infiniband/sw/rxe/rxe_pool.h b/drivers/infiniband/sw/rxe/rxe_pool.h
index b9680f9e907c..f916ad4d0406 100644
--- a/drivers/infiniband/sw/rxe/rxe_pool.h
+++ b/drivers/infiniband/sw/rxe/rxe_pool.h
@@ -11,7 +11,6 @@
 #define RXE_POOL_CACHE_FLAGS	(0)
 
 enum rxe_pool_flags {
-	RXE_POOL_ATOMIC		= BIT(0),
 	RXE_POOL_INDEX		= BIT(1),
 	RXE_POOL_KEY		= BIT(2),
 	RXE_POOL_NO_ALLOC	= BIT(4),
-- 
2.27.0


  parent reply	other threads:[~2021-01-22  4:24 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-22  4:23 [PATCH for-next 0/5] RDMA/rxe: Fix rxe_alloc() bug Bob Pearson
2021-01-22  4:23 ` [PATCH for-next 1/5] RDMA/rxe: Fix bug in rxe_alloc Bob Pearson
2021-01-22  4:23 ` [PATCH for-next 2/5] RDMA/rxe: Fix misleading comments and names Bob Pearson
2021-01-22 19:27   ` Jason Gunthorpe
2021-01-22 21:48     ` Pearson, Robert B
2021-01-25 15:15       ` Jason Gunthorpe
2021-01-22  4:23 ` Bob Pearson [this message]
2021-01-22  4:23 ` [PATCH for-next 4/5] RDMA/rxe: Remove calls to ib_device_try_get/put Bob Pearson
2021-01-22  4:23 ` [PATCH for-next 5/5] RDMA/rxe: Remove unneeded pool->flag Bob Pearson

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