netdev - [PATCH net-next 12/18] gve: Add netif_set_xps

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Date:   Tue, 18 Aug 2020 12:44:11 -0700
From:   David Awogbemila <awogbemila@...gle.com>
To:     netdev@...r.kernel.org
Cc:     Catherine Sullivan <csully@...gle.com>,
        Yangchun Fu <yangchun@...gle.com>,
        David Awogbemila <awogbemila@...gle.com>
Subject: [PATCH net-next 12/18] gve: Add netif_set_xps_queue call

From: Catherine Sullivan <csully@...gle.com>

Configure XPS when adding tx queues to the notification blocks.

Reviewed-by: Yangchun Fu <yangchun@...gle.com>
Signed-off-by: Catherine Sullivan <csully@...gle.com>
Signed-off-by: David Awogbemila <awogbemila@...gle.com>
---
 drivers/net/ethernet/google/gve/gve_tx.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/ethernet/google/gve/gve_tx.c b/drivers/net/ethernet/google/gve/gve_tx.c
index 01d26bdca9b1..5d75dec1c520 100644
--- a/drivers/net/ethernet/google/gve/gve_tx.c
+++ b/drivers/net/ethernet/google/gve/gve_tx.c
@@ -176,12 +176,16 @@ static void gve_tx_free_ring(struct gve_priv *priv, int idx)
 
 static void gve_tx_add_to_block(struct gve_priv *priv, int queue_idx)
 {
+	unsigned int active_cpus = min_t(int, priv->num_ntfy_blks / 2,
+					 num_online_cpus());
 	int ntfy_idx = gve_tx_idx_to_ntfy(priv, queue_idx);
 	struct gve_notify_block *block = &priv->ntfy_blocks[ntfy_idx];
 	struct gve_tx_ring *tx = &priv->tx[queue_idx];
 
 	block->tx = tx;
 	tx->ntfy_id = ntfy_idx;
+	netif_set_xps_queue(priv->dev, get_cpu_mask(ntfy_idx % active_cpus),
+			    queue_idx);
 }
 
 static int gve_tx_alloc_ring(struct gve_priv *priv, int idx)
-- 
2.28.0.220.ged08abb693-goog