[PATCH v2 net-next 04/23] net: add net device refcount tracker to struct netdev_rx_queue
flat view
STALE1769d
From: Eric Dumazet <hidden>
Date: 2021-12-03 02:47:26
Subsystem:
networking drivers, networking [general], the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Revision v2 of 3 in this series.
Revisions (3)
- v1 [diff vs current]
- v2 current
- v3 [diff vs current]
From: Eric Dumazet <redacted> This helps debugging net device refcount 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 daeda6ae8d6520c38ff0ce18bac2dc957940de5d..5bda48d81240e010bffb1cfa96e7a84c733a919a 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h@@ -741,6 +741,8 @@ struct netdev_rx_queue { #endif struct kobject kobj; struct net_device *dev; + netdevice_tracker dev_tracker; + #ifdef CONFIG_XDP_SOCKETS struct xsk_buff_pool *pool; #endif
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index affe34d71d313498d8fae4a319696250aa3aef0a..27a7ac2e516f65dbfdb2a2319e6faa27c7dd8f31 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c@@ -1004,7 +1004,7 @@ static void rx_queue_release(struct kobject *kobj) #endif memset(kobj, 0, sizeof(*kobj)); - dev_put(queue->dev); + dev_put_track(queue->dev, &queue->dev_tracker); } static const void *rx_queue_namespace(struct kobject *kobj)
@@ -1044,7 +1044,7 @@ static int rx_queue_add_kobject(struct net_device *dev, int index) /* Kobject_put later will trigger rx_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, &rx_queue_ktype, NULL,
--
2.34.1.400.ga245620fadb-goog