[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20210106180428.722521-2-atenart@kernel.org>
Date: Wed, 6 Jan 2021 19:04:26 +0100
From: Antoine Tenart <atenart@...nel.org>
To: davem@...emloft.net, kuba@...nel.org, alexander.duyck@...il.com
Cc: Antoine Tenart <atenart@...nel.org>, netdev@...r.kernel.org
Subject: [PATCH net 1/3] net-sysfs: convert xps_cpus_show to bitmap_zalloc
Use bitmap_zalloc instead if zalloc_cpumask_var in xps_cpus_show to
align with xps_rxqs_show. This will improve maintenance and allow us to
factorize the two functions. The function should behave the same.
Signed-off-by: Antoine Tenart <atenart@...nel.org>
---
net/core/net-sysfs.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index daf502c13d6d..e052fc5f7e94 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -1320,8 +1320,7 @@ static ssize_t xps_cpus_show(struct netdev_queue *queue,
int cpu, len, ret, num_tc = 1, tc = 0;
struct net_device *dev = queue->dev;
struct xps_dev_maps *dev_maps;
- cpumask_var_t mask;
- unsigned long index;
+ unsigned long *mask, index;
if (!netif_is_multiqueue(dev))
return -ENOENT;
@@ -1349,7 +1348,8 @@ static ssize_t xps_cpus_show(struct netdev_queue *queue,
}
}
- if (!zalloc_cpumask_var(&mask, GFP_KERNEL)) {
+ mask = bitmap_zalloc(nr_cpu_ids, GFP_KERNEL);
+ if (!mask) {
ret = -ENOMEM;
goto err_rtnl_unlock;
}
@@ -1367,7 +1367,7 @@ static ssize_t xps_cpus_show(struct netdev_queue *queue,
for (i = map->len; i--;) {
if (map->queues[i] == index) {
- cpumask_set_cpu(cpu, mask);
+ set_bit(cpu, mask);
break;
}
}
@@ -1377,8 +1377,8 @@ static ssize_t xps_cpus_show(struct netdev_queue *queue,
rtnl_unlock();
- len = snprintf(buf, PAGE_SIZE, "%*pb\n", cpumask_pr_args(mask));
- free_cpumask_var(mask);
+ len = bitmap_print_to_pagebuf(false, buf, mask, nr_cpu_ids);
+ bitmap_free(mask);
return len < PAGE_SIZE ? len : -EINVAL;
err_rtnl_unlock:
--
2.29.2
Powered by blists - more mailing lists