[PATCH net-next 05/19] net: add net device refcount tracker to struct netdev_queue
flat view
STALE1599d
From: Eric Dumazet <hidden>
Date: 2021-12-02 03:22:33
Subsystem:
networking drivers, networking [general], the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Revision v1 of 3 in this series.
Revisions (3)
- v1 current
- v2 [diff vs current]
- v3 [diff vs current]
From: Eric Dumazet <redacted> This will help debugging pesky netdev reference leaks. Signed-off-by: Eric Dumazet <redacted> --- include/linux/netdevice.h | 2 ++ net/core/net-sysfs.c | 4 ++-- 2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 01006e02f8e66fc3ee16890d3bbdb49e3e7386b6..b43102614696a97c919f601d1337746443d79557 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h@@ -586,6 +586,8 @@ struct netdev_queue { * read-mostly part */ struct net_device *dev; + netdevice_tracker dev_tracker; + struct Qdisc __rcu *qdisc; struct Qdisc *qdisc_sleeping; #ifdef CONFIG_SYSFS
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index 27a7ac2e516f65dbfdb2a2319e6faa27c7dd8f31..3b2cdbbdc858e06fb0a482a9b7fc778e501ba1e0 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c@@ -1607,7 +1607,7 @@ static void netdev_queue_release(struct kobject *kobj) struct netdev_queue *queue = to_netdev_queue(kobj); memset(kobj, 0, sizeof(*kobj)); - dev_put(queue->dev); + dev_put_track(queue->dev, &queue->dev_tracker); } static const void *netdev_queue_namespace(struct kobject *kobj)
@@ -1647,7 +1647,7 @@ static int netdev_queue_add_kobject(struct net_device *dev, int index) /* Kobject_put later will trigger netdev_queue_release call * which decreases dev refcount: Take that reference here */ - dev_hold(queue->dev); + dev_hold_track(queue->dev, &queue->dev_tracker, GFP_KERNEL); kobj->kset = dev->queues_kset; error = kobject_init_and_add(kobj, &netdev_queue_ktype, NULL,
--
2.34.0.rc2.393.gf8c9666880-goog