linux-kernel - [PATCH 4.15 051/168] IB/rdmavt: Allocate CQ memory on the correct node

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Date:   Wed, 11 Apr 2018 00:23:13 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Sebastian Sanchez <sebastian.sanchez@...el.com>,
        Mike Marciniszyn <mike.marciniszyn@...el.com>,
        Dennis Dalessandro <dennis.dalessandro@...el.com>,
        Doug Ledford <dledford@...hat.com>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.15 051/168] IB/rdmavt: Allocate CQ memory on the correct node

4.15-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Mike Marciniszyn <mike.marciniszyn@...el.com>


[ Upstream commit db9a2c6f9b6196b889b98e961cb9a37617b11ccf ]

CQ allocation does not ensure that completion queue entries
and the completion queue structure are allocated on the correct
numa node.

Fix by allocating the rvt_cq and kernel CQ entries on the device node,
leaving the user CQ entries on the default local node.  Also ensure
CQ resizes use the correct allocator when extending a CQ.

Reviewed-by: Sebastian Sanchez <sebastian.sanchez@...el.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@...el.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@...el.com>
Signed-off-by: Doug Ledford <dledford@...hat.com>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/infiniband/sw/rdmavt/cq.c |   10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

--- a/drivers/infiniband/sw/rdmavt/cq.c
+++ b/drivers/infiniband/sw/rdmavt/cq.c
@@ -198,7 +198,7 @@ struct ib_cq *rvt_create_cq(struct ib_de
 		return ERR_PTR(-EINVAL);
 
 	/* Allocate the completion queue structure. */
-	cq = kzalloc(sizeof(*cq), GFP_KERNEL);
+	cq = kzalloc_node(sizeof(*cq), GFP_KERNEL, rdi->dparms.node);
 	if (!cq)
 		return ERR_PTR(-ENOMEM);
 
@@ -214,7 +214,9 @@ struct ib_cq *rvt_create_cq(struct ib_de
 		sz += sizeof(struct ib_uverbs_wc) * (entries + 1);
 	else
 		sz += sizeof(struct ib_wc) * (entries + 1);
-	wc = vmalloc_user(sz);
+	wc = udata ?
+		vmalloc_user(sz) :
+		vzalloc_node(sz, rdi->dparms.node);
 	if (!wc) {
 		ret = ERR_PTR(-ENOMEM);
 		goto bail_cq;
@@ -369,7 +371,9 @@ int rvt_resize_cq(struct ib_cq *ibcq, in
 		sz += sizeof(struct ib_uverbs_wc) * (cqe + 1);
 	else
 		sz += sizeof(struct ib_wc) * (cqe + 1);
-	wc = vmalloc_user(sz);
+	wc = udata ?
+		vmalloc_user(sz) :
+		vzalloc_node(sz, rdi->dparms.node);
 	if (!wc)
 		return -ENOMEM;