Thread (22 messages) flat view 22 messages, 3 authors, 2021-03-17
STALE1974d

Revision v3 of 4 in this series.

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[PATCH net-next v3 10/16] net: improve queue removal readability in __netif_set_xps_queue

From: Antoine Tenart <atenart@kernel.org>
Date: 2021-03-12 15:06:13
Subsystem: networking [general], the rest · Maintainers: "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds

Improve the readability of the loop removing tx-queue from unused
CPUs/rx-queues in __netif_set_xps_queue. The change should only be
cosmetic.

Signed-off-by: Antoine Tenart <atenart@kernel.org>
---
 net/core/dev.c | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/net/core/dev.c b/net/core/dev.c
index 4d39938417c4..052797ca65f6 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2786,13 +2786,16 @@ int __netif_set_xps_queue(struct net_device *dev, const unsigned long *mask,
 
 	/* removes tx-queue from unused CPUs/rx-queues */
 	for (j = 0; j < dev_maps->nr_ids; j++) {
-		for (i = tc, tci = j * dev_maps->num_tc; i--; tci++)
-			active |= remove_xps_queue(dev_maps, tci, index);
-		if (!netif_attr_test_mask(j, mask, dev_maps->nr_ids) ||
-		    !netif_attr_test_online(j, online_mask, dev_maps->nr_ids))
-			active |= remove_xps_queue(dev_maps, tci, index);
-		for (i = dev_maps->num_tc - tc, tci++; --i; tci++)
+		tci = j * dev_maps->num_tc;
+
+		for (i = 0; i < dev_maps->num_tc; i++, tci++) {
+			if (i == tc &&
+			    netif_attr_test_mask(j, mask, dev_maps->nr_ids) &&
+			    netif_attr_test_online(j, online_mask, dev_maps->nr_ids))
+				continue;
+
 			active |= remove_xps_queue(dev_maps, tci, index);
+		}
 	}
 
 	/* free map if not active */
-- 
2.29.2
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