On Thu, Mar 28, 2019 at 5:20 PM Leandro Dorileo <leandro.maciel.dori...@intel.com> wrote: > +static int taprio_dev_notifier(struct notifier_block *nb, unsigned long > event, > + void *ptr) > +{ > + struct net_device *dev = netdev_notifier_info_to_dev(ptr); > + struct taprio_sched *q; > + struct net_device *qdev; > + > + ASSERT_RTNL(); > + > + if (event != NETDEV_UP && event != NETDEV_CHANGE) > + return NOTIFY_DONE; > + > + spin_lock(&taprio_list_lock); > + list_for_each_entry(q, &taprio_list, taprio_list) { > + qdev = qdisc_dev(q->root); > + if (qdev == dev) { > + taprio_set_picos_per_byte(dev, q); > + break;
Is it safe to call __ethtool_get_link_ksettings() with spinlock held? I mean is it blocking? Please audit all the dev->ethtool_ops->get_link_ksettings(), I just look at a few of them, it seems good. Thanks.