netdev - [PATCH 4/4] net: register debugfs file for net

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Message-Id: <20250414-reftrack-dbgfs-v1-4-f03585832203@kernel.org>
Date: Mon, 14 Apr 2025 10:45:49 -0400
From: Jeff Layton <jlayton@...nel.org>
To: Andrew Morton <akpm@...ux-foundation.org>, 
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
 Simon Horman <horms@...nel.org>
Cc: Qasim Ijaz <qasdev00@...il.com>, Nathan Chancellor <nathan@...nel.org>, 
 Andrew Lunn <andrew@...n.ch>, linux-kernel@...r.kernel.org, 
 netdev@...r.kernel.org, Jeff Layton <jlayton@...nel.org>
Subject: [PATCH 4/4] net: register debugfs file for net_device refcnt
 tracker

As a nearly-final step in register_netdevice(), finalize the name in the
refcount tracker, and register a debugfs file for it.

Signed-off-by: Jeff Layton <jlayton@...nel.org>
---
 net/core/dev.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/core/dev.c b/net/core/dev.c
index 2f7f5fd9ffec7c0fc219eb6ba57d57a55134186e..db9cac702bb2230ca2bbc2c04ac0a77482c65fc3 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -10994,6 +10994,8 @@ int register_netdevice(struct net_device *dev)
 	    dev->rtnl_link_state == RTNL_LINK_INITIALIZED)
 		rtmsg_ifinfo(RTM_NEWLINK, dev, ~0U, GFP_KERNEL, 0, NULL);

+	/* Register debugfs file for the refcount tracker */
+	ref_tracker_dir_debugfs(&dev->refcnt_tracker, dev->name);
 out:
 	return ret;

-- 
2.49.0