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 273612620C1; Tue, 27 May 2025 11:33:49 +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=1748345630; cv=none; b=BtcCTIar07/cqBvvkE/Eme/+QL6579wPzavpmDw9WaidgXsriqcpiFLZbuTuyNTHRVOeKz4LC0T+86JJHUUHvQ7ndRjq+mwYj7fk5D4jiWywCzXqkxfIDah43mHcm6jM9KDO9Ws3KYRtYP9+oyOk9O+MCaCe6kwjEv/+Ev6i3CQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748345630; c=relaxed/simple; bh=LxLVRB8GvDbWgwRUBMxy60vYqqNKxSuBn+6jZzlFCL8=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=S5Wb51p+uCoFJR8mKWT1Swk4u/4ZzSyxD/jsp9i5QbjtFJriyLJWXk6MRiQUuWF4Hb/PExgOocltWKFAvlEfqpbnbrWeDGLP/D6jga7OlF6ff2kW+d7wOxSb2IxpyX9ArRIbzbzjW2FxLxT7uknTE1jDNfg/Y4l+75PbWsv7Pi8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=H/1Vjf2s; 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="H/1Vjf2s" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D7FB6C4CEF2; Tue, 27 May 2025 11:33:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1748345629; bh=LxLVRB8GvDbWgwRUBMxy60vYqqNKxSuBn+6jZzlFCL8=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=H/1Vjf2sPX5KsrcOHk+12wXlOtPzI8Iukxuhbz6YGMxCk/wg193jaEboTR7JMwqjR A9zcY+aMWg5Whhb838580SWhl32lJTyaeXjR7+5s637gghgbo1dvemnPZdTZrSWUBg eFyNfk7oW4yRp5BNydPJwKtTcBXHsiuIZS1Gq+MBQbqs6g8uu0grCCoQgL6kUlHhNA jCZe7msdNHpPl5KFH4eZ6Yd4nxfpwvBo4vMklqgi0G8kbl5odQJDplygC/J1HNTtPx yH4l8Ebd8L9mRqgRrnCXKDeG5G5WqJaZnmJVXAInZ26JwNcWMBK1VzT01uYWQ6n8Q2 BVwX1wFQUw7jA== From: Jeff Layton Date: Tue, 27 May 2025 07:33:33 -0400 Subject: [PATCH v10 2/9] ref_tracker: add a top level debugfs directory for ref_tracker Precedence: bulk X-Mailing-List: netdev@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: <20250527-reftrack-dbgfs-v10-2-dc55f7705691@kernel.org> References: <20250527-reftrack-dbgfs-v10-0-dc55f7705691@kernel.org> In-Reply-To: <20250527-reftrack-dbgfs-v10-0-dc55f7705691@kernel.org> To: Andrew Morton , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin Cc: Kuniyuki Iwashima , Qasim Ijaz , Nathan Chancellor , Andrew Lunn , linux-kernel@vger.kernel.org, netdev@vger.kernel.org, dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, Jeff Layton X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1182; i=jlayton@kernel.org; h=from:subject:message-id; bh=LxLVRB8GvDbWgwRUBMxy60vYqqNKxSuBn+6jZzlFCL8=; b=owEBbQKS/ZANAwAKAQAOaEEZVoIVAcsmYgBoNaMVUlqezMYH1mChIIL5u6XBGAgfwmyhmxpLN 5wWe7G0X5CJAjMEAAEKAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCaDWjFQAKCRAADmhBGVaC FcTlEAC7BuBEddZnQjUlkz5zSm4otOItDTjUhGMXZTeBxwZ3rNVydEEUQpBLVk+WDdZyiMlhHwt 75DORyJfHzYdSpf0e/WnyqVbJj4ByPcSQRFSj5rcaKmNWHEltD274lcgSWy0Zl1YYpiSYFWGVJE 2P2R5iZlsXboEsudbSNlwcs7+LqEUN2MorNhS1WWMQK0TpDBTuuBRi3CAWPv5ZdF+MsECg/vD7U BvwqFHL0hXJc0I/si0gzjXIdW+GpyEcrVcfIy6iq2TCfiFEXBH7KSnt0g8usF80u5EsEiyQP32V zNNvMqpDouDHwT/jvnzGYV9XYq8lPmxWfUcL1/LmOEiTbRNnmHA7wwiu5Ps/9ohtgyGlQNKIi4v RWaHQqF+txZ4CKdwrrmp1yflqz/+TMxC0moyxYq0lPnCHCwmgKoJabsH0P9nvwruD3GUnAh35hI LMPi8vUD0Al5my93UERGLE72U8+3gRMLqnu0TmfHgdxdkvUoArxgvsZKbesv9wqI4PeXBb57J7J jTFSWhLLq9BA/rO3HI/juKsV92jV3ID0scnnOoaoj21LeVitpINSdxDeh3//d5yCJ+WqHNCCzGS VgJHp6RpKevoKCI/KYcm2CYf2hAFLWNYszqo6g9CdygWkfk2Tk98iba2JQAcirKqrFEFXF33V6P llhWX9B9xmZxYBg== X-Developer-Key: i=jlayton@kernel.org; a=openpgp; fpr=4BC0D7B24471B2A184EAF5D3000E684119568215 Add a new "ref_tracker" directory in debugfs. Each individual refcount tracker can register files under there to display info about currently-held references. Reviewed-by: Andrew Lunn Signed-off-by: Jeff Layton --- lib/ref_tracker.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/lib/ref_tracker.c b/lib/ref_tracker.c index de71439e12a3bab6456910986fa611dfbdd97980..34ac37db209077d6771d5f4367e53d19ba3169c6 100644 --- a/lib/ref_tracker.c +++ b/lib/ref_tracker.c @@ -273,3 +273,19 @@ int ref_tracker_free(struct ref_tracker_dir *dir, return 0; } EXPORT_SYMBOL_GPL(ref_tracker_free); + +#ifdef CONFIG_DEBUG_FS +#include + +static struct dentry *ref_tracker_debug_dir = (struct dentry *)-ENOENT; + +static int __init ref_tracker_debugfs_init(void) +{ + ref_tracker_debug_dir = debugfs_create_dir("ref_tracker", NULL); + if (IS_ERR(ref_tracker_debug_dir)) + pr_warn("ref_tracker: unable to create debugfs ref_tracker directory: %pe\n", + ref_tracker_debug_dir); + return 0; +} +late_initcall(ref_tracker_debugfs_init); +#endif /* CONFIG_DEBUG_FS */ -- 2.49.0