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From: Shannon Nelson <snelson@pensando.io>
To: davem@davemloft.net, netdev@vger.kernel.org, kuba@kernel.org
Cc: drivers@pensando.io, Shannon Nelson <snelson@pensando.io>
Subject: [PATCH net 3/5] ionic: remove intr coalesce update from napi
Date: Fri, 23 Jul 2021 11:02:47 -0700	[thread overview]
Message-ID: <20210723180249.57599-4-snelson@pensando.io> (raw)
In-Reply-To: <20210723180249.57599-1-snelson@pensando.io>

Move the interrupt coalesce value update out of the napi
thread and into the dim_work thread and set it only when it
has actually changed.

Fixes: 04a834592bf5 ("ionic: dynamic interrupt moderation")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
---
 drivers/net/ethernet/pensando/ionic/ionic_lif.c  | 14 +++++++++++++-
 drivers/net/ethernet/pensando/ionic/ionic_txrx.c |  4 ----
 2 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.c b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
index 7815e9034fb8..e795fa63ca12 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_lif.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
@@ -53,7 +53,19 @@ static void ionic_dim_work(struct work_struct *work)
 	cur_moder = net_dim_get_rx_moderation(dim->mode, dim->profile_ix);
 	qcq = container_of(dim, struct ionic_qcq, dim);
 	new_coal = ionic_coal_usec_to_hw(qcq->q.lif->ionic, cur_moder.usec);
-	qcq->intr.dim_coal_hw = new_coal ? new_coal : 1;
+	new_coal = new_coal ? new_coal : 1;
+
+	if (qcq->intr.dim_coal_hw != new_coal) {
+		unsigned int qi = qcq->cq.bound_q->index;
+		struct ionic_lif *lif = qcq->q.lif;
+
+		qcq->intr.dim_coal_hw = new_coal;
+
+		ionic_intr_coal_init(lif->ionic->idev.intr_ctrl,
+				     lif->rxqcqs[qi]->intr.index,
+				     qcq->intr.dim_coal_hw);
+	}
+
 	dim->state = DIM_START_MEASURE;
 }
 
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_txrx.c b/drivers/net/ethernet/pensando/ionic/ionic_txrx.c
index 08934888575c..9d3a04110685 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_txrx.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_txrx.c
@@ -463,10 +463,6 @@ static void ionic_dim_update(struct ionic_qcq *qcq)
 	lif = qcq->q.lif;
 	qi = qcq->cq.bound_q->index;
 
-	ionic_intr_coal_init(lif->ionic->idev.intr_ctrl,
-			     lif->rxqcqs[qi]->intr.index,
-			     qcq->intr.dim_coal_hw);
-
 	dim_update_sample(qcq->cq.bound_intr->rearm_count,
 			  lif->txqstats[qi].pkts,
 			  lif->txqstats[qi].bytes,
-- 
2.17.1


  parent reply	other threads:[~2021-07-23 18:03 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-23 18:02 [PATCH net 0/5] ionic: bug fixes Shannon Nelson
2021-07-23 18:02 ` [PATCH net 1/5] ionic: make all rx_mode work threadsafe Shannon Nelson
2021-07-23 18:02 ` [PATCH net 2/5] ionic: catch no ptp support earlier Shannon Nelson
2021-07-23 18:02 ` Shannon Nelson [this message]
2021-07-23 18:02 ` [PATCH net 4/5] ionic: fix up dim accounting for tx and rx Shannon Nelson
2021-07-23 18:02 ` [PATCH net 5/5] ionic: count csum_none when offload enabled Shannon Nelson
2021-07-23 21:10 ` [PATCH net 0/5] ionic: bug fixes patchwork-bot+netdevbpf

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