This is a note to let you know that I've just added the patch titled
IB/rdmavt: Allocate CQ memory on the correct node
to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: ib-rdmavt-allocate-cq-memory-on-the-correct-node.patch and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From foo@baz Mon Apr 9 17:09:24 CEST 2018
From: Mike Marciniszyn mike.marciniszyn@intel.com Date: Mon, 18 Dec 2017 19:57:06 -0800 Subject: IB/rdmavt: Allocate CQ memory on the correct node
From: Mike Marciniszyn mike.marciniszyn@intel.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@intel.com Signed-off-by: Mike Marciniszyn mike.marciniszyn@intel.com Signed-off-by: Dennis Dalessandro dennis.dalessandro@intel.com Signed-off-by: Doug Ledford dledford@redhat.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.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 @@ -197,7 +197,7 @@ 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);
@@ -213,7 +213,9 @@ 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; @@ -368,7 +370,9 @@ 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;
Patches currently in stable-queue which might be from mike.marciniszyn@intel.com are
queue-4.9/ib-rdmavt-allocate-cq-memory-on-the-correct-node.patch