diff options
| author | Eric Dumazet <edumazet@google.com> | 2025-07-02 06:15:58 +0000 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-07-07 18:42:12 -0700 |
| commit | 6058099da5e5eb057751905e587328affb93a81a (patch) | |
| tree | 95ec53c89203c876b36a805065a66e195e936c6f /net/core/net-sysfs.c | |
| parent | d8bf56a0ca10af7936de8bbdd510c33041dacecc (diff) | |
net: remove RTNL use for /proc/sys/net/core/rps_default_mask
Use a dedicated mutex instead.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20250702061558.1585870-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/core/net-sysfs.c')
| -rw-r--r-- | net/core/net-sysfs.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c index c9b969386399..8f897e2c8b4f 100644 --- a/net/core/net-sysfs.c +++ b/net/core/net-sysfs.c @@ -1210,12 +1210,21 @@ static int rx_queue_default_mask(struct net_device *dev, struct netdev_rx_queue *queue) { #if IS_ENABLED(CONFIG_RPS) && IS_ENABLED(CONFIG_SYSCTL) - struct cpumask *rps_default_mask = READ_ONCE(dev_net(dev)->core.rps_default_mask); + struct cpumask *rps_default_mask; + int res = 0; + mutex_lock(&rps_default_mask_mutex); + + rps_default_mask = dev_net(dev)->core.rps_default_mask; if (rps_default_mask && !cpumask_empty(rps_default_mask)) - return netdev_rx_queue_set_rps_mask(queue, rps_default_mask); -#endif + res = netdev_rx_queue_set_rps_mask(queue, rps_default_mask); + + mutex_unlock(&rps_default_mask_mutex); + + return res; +#else return 0; +#endif } static int rx_queue_add_kobject(struct net_device *dev, int index) |