Commit 116dce0f authored by Brett Creeley's avatar Brett Creeley Committed by Jakub Kicinski
Browse files

ionic: Use vzalloc for large per-queue related buffers 



Use vzalloc for per-queue info structs that don't need any
DMA mapping to help relieve memory pressure found when used
in our limited SOC environment.

Signed-off-by: default avatarBrett Creeley <brett@pensando.io>
Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 12b1b997

drivers/net/ethernet/pensando/ionic/ionic_lif.c

+6 −8
Original line number Diff line number Diff line
@@ -393,11 +393,11 @@ static void ionic_qcq_free(struct ionic_lif *lif, struct ionic_qcq *qcq) 
	ionic_qcq_intr_free(lif, qcq);



	if (qcq->cq.info) {

		devm_kfree(dev, qcq->cq.info);

		vfree(qcq->cq.info);

		qcq->cq.info = NULL;

	}

	if (qcq->q.info) {

		devm_kfree(dev, qcq->q.info);

		vfree(qcq->q.info);

		qcq->q.info = NULL;

	}

}
@@ -528,8 +528,7 @@ static int ionic_qcq_alloc(struct ionic_lif *lif, unsigned int type, 
	new->q.dev = dev;

	new->flags = flags;



	new->q.info = devm_kcalloc(dev, num_descs, sizeof(*new->q.info),

				   GFP_KERNEL);

	new->q.info = vzalloc(num_descs * sizeof(*new->q.info));

	if (!new->q.info) {

		netdev_err(lif->netdev, "Cannot allocate queue info\n");

		err = -ENOMEM;
@@ -550,8 +549,7 @@ static int ionic_qcq_alloc(struct ionic_lif *lif, unsigned int type, 
	if (err)

		goto err_out;



	new->cq.info = devm_kcalloc(dev, num_descs, sizeof(*new->cq.info),

				    GFP_KERNEL);

	new->cq.info = vzalloc(num_descs * sizeof(*new->cq.info));

	if (!new->cq.info) {

		netdev_err(lif->netdev, "Cannot allocate completion queue info\n");

		err = -ENOMEM;
@@ -640,14 +638,14 @@ static int ionic_qcq_alloc(struct ionic_lif *lif, unsigned int type, 
err_out_free_q:

	dma_free_coherent(dev, new->q_size, new->q_base, new->q_base_pa);

err_out_free_cq_info:

	devm_kfree(dev, new->cq.info);

	vfree(new->cq.info);

err_out_free_irq:

	if (flags & IONIC_QCQ_F_INTR) {

		devm_free_irq(dev, new->intr.vector, &new->napi);

		ionic_intr_free(lif->ionic, new->intr.index);

	}

err_out_free_q_info:

	devm_kfree(dev, new->q.info);

	vfree(new->q.info);

err_out_free_qcq:

	devm_kfree(dev, new);

err_out: