From nobody Fri Dec 19 20:32:35 2025 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 EF1A923BCF0; Tue, 15 Apr 2025 18:50:30 +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=1744743031; cv=none; b=X97na6DmOdJPpYT9WQ6lIS9dmhsdi5aORt0nBCambz1tlRWG1v33GNKqv9TvmedtkCo6kQwh8tt/EnCcv7NkOlt8Od531Edv2kURqPF0yt4E3CMsZ9M+WLh9NBAmQpHT2TKUsn4S/2wDgLOMpOChvGKEAY9wTFGjYiTvwaR9Cps= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744743031; c=relaxed/simple; bh=eNo92cBQpj7b/wXPctGVOxEdwuf4gwvq9WIYh0h6UHs=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=BfVuR8CbnX/akL85M0akFecutZRf7G/+9B1KnEg1VZjaGyFxYTCd7+Kbn/XvsP4D3pGjB86aHxXHOCe+hBuoMKfNMwuIQySAB/AwSe47m4DZjCnUyYZmssT8T78funSslxsCi3Ah/VZagQI1NgYejh0/nHDm0M0OkxAKExxO0eQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=HyerSjS/; 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="HyerSjS/" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5A10DC4CEEE; Tue, 15 Apr 2025 18:50:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1744743030; bh=eNo92cBQpj7b/wXPctGVOxEdwuf4gwvq9WIYh0h6UHs=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=HyerSjS/6aAzezlSc3gBYhuL9hhRNx+FnY2OoaHiDkzH/NptBv0fP/pH6/TwqsGeQ yB2qHTMwaa0g9Xmv8G5igRi7z6ZkRhrEqFk086NqCkZZcShvtsTzaA+Kho8foeN7+h 3de0hQnFUsnVhEBj7GxT1v0UXnSb5aFIzaUg78Z85ePUdgd4nNacO6zHm5dFPqXNMw krq/BFEH0tJNL17pvCPD3R1O1yqbV8e4KL/uChHZ6ejZPf1pwvqaKsQ4bqnC6sSumi wM5PHUpeuRjfz/8Vax1fNEUYjRH7HrcRKAH8tmH9MAl9OBiiJwnLO8N85CAWVbiMUT 1BCS1+5l961ng== From: Jeff Layton Date: Tue, 15 Apr 2025 14:49:46 -0400 Subject: [PATCH v2 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: quoted-printable Message-Id: <20250415-reftrack-dbgfs-v2-8-b18c4abd122f@kernel.org> References: <20250415-reftrack-dbgfs-v2-0-b18c4abd122f@kernel.org> In-Reply-To: <20250415-reftrack-dbgfs-v2-0-b18c4abd122f@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=1201; i=jlayton@kernel.org; h=from:subject:message-id; bh=eNo92cBQpj7b/wXPctGVOxEdwuf4gwvq9WIYh0h6UHs=; b=owEBbQKS/ZANAwAIAQAOaEEZVoIVAcsmYgBn/qpql9dLvQ2791q+lprZuHaoBkdii84MRD0N7 TXJFPiTyOqJAjMEAAEIAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCZ/6qagAKCRAADmhBGVaC FTdRD/93ofcBTtdawaS7TUKN3LMF6FihrTC8SETLsjf68JDuyvJlL16MlPl8FGFLNkfpK3R2JkL qk6ojNXvy2MfT07DgXTIk18F0FswUA1gDSgltYY54OZVOMxJcdWlOQIs2KpRQHXDl4gmyiithfs Uk3VBd4VcHl5R69yCuryWJE8NtIwvZilxTFMaxy2iHL5xNlUgWl+WleqZP+qMtRGDXzP5nr9pLM zIOXSPP9pEHiqqtMAKeOwucYpB15kQvF8IkIJqg+WgdvLyJpSJsgMdT49FluxXO6zJ2iC20VugC x1v+aSPWXD3ubL/xeXuNACFjmxRYBPK9W0C5yeWBa/tN37M4gGeMxEu3gQiIE/CKEfZnjDjB+r8 E/PUXK2dI4T7BpGKI0M58dCLwrEErzCK6Gf/siUOHOpP3CZb7Etjk6Eg7yKU/VSYdv6PF5xKXDg SjukSDmHi95S1cbjeFryGHYrhP0PvxX8MqcPoQmxysUPEm+cssBNCzUKAI2LUYnLBV8081Ppd4V slJOrApdUanx24WyYL3aMuWTb6CLCalq6frzl/FIdOJpR/9P2v1jVqxtwa+dcwe6CuQvV7mB863 DAMRH5xUQDJz3XvmIflSMVfPz2C4rMoE0nxCi3VN3mcYmTaezvXqXQM1y4pdwu0IV9RAOAR8ZXt TInjHXSNE0tNbgw== 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..a87488e127ed13fded156023de6= 76851826a1a8f 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -10834,8 +10834,9 @@ static void netdev_free_phy_link_topology(struct ne= t_device *dev) */ int register_netdevice(struct net_device *dev) { - int ret; struct net *net =3D dev_net(dev); + char name[64]; + int ret; =20 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 =3D=3D RTNL_LINK_INITIALIZED) rtmsg_ifinfo(RTM_NEWLINK, dev, ~0U, GFP_KERNEL, 0, NULL); =20 + /* 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; =20 --=20 2.49.0