linux-kernel - [PATCH v2 2/4] net: merge XPS_CPU_DEV_MAPS_SIZE and XPS_RXQ_DEV_MAPS

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Message-Id: <20221013234349.1165689-3-yury.norov@gmail.com>
Date:   Thu, 13 Oct 2022 16:43:46 -0700
From:   Yury Norov <yury.norov@...il.com>
To:     netdev@...r.kernel.org, "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Menglong Dong <imagedong@...cent.com>,
        Kuniyuki Iwashima <kuniyu@...zon.com>,
        Petr Machata <petrm@...dia.com>,
        Guo Ren <guoren@...ux.alibaba.com>,
        "Michael S . Tsirkin" <mst@...hat.com>
Cc:     Yury Norov <yury.norov@...il.com>, linux-kernel@...r.kernel.org
Subject: [PATCH v2 2/4] net: merge XPS_CPU_DEV_MAPS_SIZE and XPS_RXQ_DEV_MAPS_SIZE macros

The macros are used in a single place, and merging them
would simplify the code.

Signed-off-by: Yury Norov <yury.norov@...il.com>
---
 include/linux/netdevice.h | 7 ++-----
 net/core/dev.c            | 3 +--
 2 files changed, 3 insertions(+), 7 deletions(-)

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index a36edb0ec199..53d738f66159 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -825,11 +825,8 @@ struct xps_dev_maps {
 	struct xps_map __rcu *attr_map[]; /* Either CPUs map or RXQs map */
 };
 
-#define XPS_CPU_DEV_MAPS_SIZE(_tcs) (sizeof(struct xps_dev_maps) +	\
-	(nr_cpu_ids * (_tcs) * sizeof(struct xps_map *)))
-
-#define XPS_RXQ_DEV_MAPS_SIZE(_tcs, _rxqs) (sizeof(struct xps_dev_maps) +\
-	(_rxqs * (_tcs) * sizeof(struct xps_map *)))
+#define XPS_DEV_MAPS_SIZE(_tcs, nr) (sizeof(struct xps_dev_maps) +\
+	((nr) * (_tcs) * sizeof(struct xps_map *)))
 
 #endif /* CONFIG_XPS */
 
diff --git a/net/core/dev.c b/net/core/dev.c
index 70fa12c6551c..9dc6fcb0d48a 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2564,15 +2564,14 @@ int __netif_set_xps_queue(struct net_device *dev, const unsigned long *mask,
 	}
 
 	if (type == XPS_RXQS) {
-		maps_sz = XPS_RXQ_DEV_MAPS_SIZE(num_tc, dev->num_rx_queues);
 		nr_ids = dev->num_rx_queues;
 	} else {
-		maps_sz = XPS_CPU_DEV_MAPS_SIZE(num_tc);
 		if (num_possible_cpus() > 1)
 			online_mask = cpumask_bits(cpu_online_mask);
 		nr_ids = nr_cpu_ids;
 	}
 
+	maps_sz = XPS_DEV_MAPS_SIZE(num_tc, nr_ids);
 	if (maps_sz < L1_CACHE_BYTES)
 		maps_sz = L1_CACHE_BYTES;
 
-- 
2.34.1