From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A28AE24EAA2; Thu, 17 Apr 2025 13:11:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744895490; cv=none; b=AP9gDfO/BFkiK/8WiN7oq7004fk7UNchQNPv8Q073Ike7Nf9Q7ZRlV1Gy5FFMbJj+sLyigiPK7kBxFAXA3cjFoRuDWjueRionwonX+wsTY+ah/Lhltibm4qEkyfjIVaO+W/lHEtNMq1m/JFAOh5cCQr8U56c9dpZDSxr++KMsQs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744895490; c=relaxed/simple; bh=WQDl9VxZJGJoqqYLaCnumasFC8mQLUW7g6SKFZtqLr8=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=fEk0ERprqbWSX1TIS/me9BLAMuZKGQPANWpkqykELjqfz4psUoFWvWa8IjbOqVxDy3vfgN6w8H7cMRNMOziPRKZpAUkhUI7Ao7578qy72AaxhEVJk/2EUOYTZFNxT4dYH3UOXvsJeGzDrk/k+izJZjMT1HRussJ6FNRVSUr+StA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=c9UJQNFr; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="c9UJQNFr" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 78972C4CEED; Thu, 17 Apr 2025 13:11:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1744895490; bh=WQDl9VxZJGJoqqYLaCnumasFC8mQLUW7g6SKFZtqLr8=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=c9UJQNFr4j85puVE4/6p/SXMaCK1qIz8a/vuV74smA+5l8+bOVVlrd8kpIDOUIGtp BjsbdUVOTRpHfvYXjvthGkB23+wl9rqDLy63U6Oj77ASp8Y6rP8yqeICF11vl6s7UX YQkjhTDgnKeTcwSk40owukbvs5C4Vj1YJpHTDvfOeuRJD3LMphVRpkUzX0vWcpijtg 2hx+qS7gTjkJKL5i+drZMid4E1JqcZ/wvZFWv585L0CcsMS7LrEhtOj9rjVGFLDyDv bupMr7CWgWRFuPxoKlLTc2WIThUSaUuEYDsUqFBM0455ndKfGaGeKdB8vIh4BvmTY6 g/shviy9PWY5Q== From: Jeff Layton Date: Thu, 17 Apr 2025 09:11:11 -0400 Subject: [PATCH v3 8/8] net: register debugfs file for net_device refcnt tracker Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20250417-reftrack-dbgfs-v3-8-c3159428c8fb@kernel.org> References: <20250417-reftrack-dbgfs-v3-0-c3159428c8fb@kernel.org> In-Reply-To: <20250417-reftrack-dbgfs-v3-0-c3159428c8fb@kernel.org> To: Andrew Morton , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman Cc: Kuniyuki Iwashima , Qasim Ijaz , Nathan Chancellor , Andrew Lunn , linux-kernel@vger.kernel.org, netdev@vger.kernel.org, Jeff Layton X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1217; i=jlayton@kernel.org; h=from:subject:message-id; bh=WQDl9VxZJGJoqqYLaCnumasFC8mQLUW7g6SKFZtqLr8=; b=owEBbQKS/ZANAwAIAQAOaEEZVoIVAcsmYgBoAP33hN4AKv5WkgFj3GwxmPh8a5UgMisNFvL3/ 4ENENdZxM+JAjMEAAEIAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCaAD99wAKCRAADmhBGVaC FfmiEACpfLEr5qELW0papwIkeezJNBKDC9gbQuhKOeZbJjw99mc55OS7nfmO1hF09lofIx7Hlfy sfcdzCj0+9DKI76uhzdVSqlREYAcaX3oyDJ5HdnzVCcoJ9zg2MQGGeKbLW2pjcV8h/hVzRKgHkM STTbaQfnUfYAQzc85s6R5cVmFtT2B8dpupBlSI8PZpF2T2wr1vBsD8twOXnYMcIYW6pQS4bUHuJ XIVKKGYY1+qn6wTGla/er6xpmr7m1O3L9T2ysMFHiP9kK5pZ3RMBB5agrnJvIdeTrybqKeRT1Ly QUeKGVg/T5+wqlmMLcUJcQFgYVH22KYvx5vbNwRX6v78T8fxJHKYvxgiHXGdHgsx9w+wAWCvwYu NVpaKct+r8PY3ZIhrUKrTm7MusfdYkZdbPImr2qo1BYmqObszhztV9O0Y/cwqP0H3wPqrxyyV0A 8CmVFPsOUgNsLf9Bc05oKmOHvUFfWAhcYrkEtrp2GqJv4jI9jnkMswVi4o/KQ3CMi4/jQVmeZYW FqBxXrRnSvs/gxf3aP8davFA1plQGf0mj8IeoreEFyhNbz7eS8eQAa0Rq0FT/RmDbU/BbuqPQO9 2uZrPgDfhYzcLI6l2Fndt2ro/4KmVPx7DsP+UHsJu4i/PsVOZ/l6CrM5l6Xr0LujGs1uJooXttp Tvk2NmxE71gydsA== X-Developer-Key: i=jlayton@kernel.org; a=openpgp; fpr=4BC0D7B24471B2A184EAF5D3000E684119568215 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 --- net/core/dev.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/net/core/dev.c b/net/core/dev.c index 2f7f5fd9ffec7c0fc219eb6ba57d57a55134186e..19fa4f2caba28cadf55ed1655b69b6eb1170d799 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -10834,8 +10834,9 @@ static void netdev_free_phy_link_topology(struct net_device *dev) */ int register_netdevice(struct net_device *dev) { - int ret; struct net *net = dev_net(dev); + char name[REF_TRACKER_NAMESZ]; + int ret; BUILD_BUG_ON(sizeof(netdev_features_t) * BITS_PER_BYTE < NETDEV_FEATURE_COUNT); @@ -10994,6 +10995,9 @@ 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 */ + if (snprintf(name, sizeof(name), "netdev-%s@%p", dev->name, dev) < sizeof(name)) + ref_tracker_dir_debugfs(&dev->refcnt_tracker, name); out: return ret; -- 2.49.0