From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from relay.hostedemail.com (smtprelay0010.hostedemail.com [216.40.44.10]) (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 814E6433A8 for ; Fri, 13 Jun 2025 02:49:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=216.40.44.10 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749782955; cv=none; b=jbiI9RfPZ0Ud2BYtShweRvznSU8V6XhrrzBSrYZ0La6CgfS4qsWOyXR9/u1LgOuX7hGTEZBNoQ9H0oH9hPSvZILXXEcMopgKW2MbA0l8/VlpW9hSyBXj4GOzFQE4et5cdv2VB3U2/SKZE+IZZVitYUgjtht78rRCmeoFRwWmSNU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749782955; c=relaxed/simple; bh=Bk0pghWnCWdBO1NH6y+lDiL+29upUOFZxuYWtspWj8w=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type; b=PQOU3T1ECvBOR65CSC7jj/Swxyyn863XPA8F6sm0NMfYMSnfEDX/p9AWSL+3xPduIV1zflrMSJ6/v+eYNzticbj6pSJ26YRujfNaB3s/B4BYv4jYihKb+RYBUJNQZHqrDEcUEv9eIXL0zGCKIjguddDAWFmjI4jpe/9hcZ2Nvqw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=goodmis.org; spf=pass smtp.mailfrom=goodmis.org; arc=none smtp.client-ip=216.40.44.10 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=goodmis.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=goodmis.org Received: from omf03.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay07.hostedemail.com (Postfix) with ESMTP id 430AC160B58; Fri, 13 Jun 2025 02:49:09 +0000 (UTC) Received: from [HIDDEN] (Authenticated sender: rostedt@goodmis.org) by omf03.hostedemail.com (Postfix) with ESMTPA id B800C60013; Fri, 13 Jun 2025 02:49:07 +0000 (UTC) Date: Thu, 12 Jun 2025 22:49:06 -0400 From: Steven Rostedt To: LKML , linux-erofs@lists.ozlabs.org Cc: Gao Xiang , Chao Yu Subject: Unused trace event in erofs Message-ID: <20250612224906.15000244@batman.local.home> X-Mailer: Claws Mail 3.17.8 (GTK+ 2.24.33; x86_64-pc-linux-gnu) 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=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: B800C60013 X-Stat-Signature: uaoocgjsrjds49dg1urx9xzjnucpez7i X-Rspamd-Server: rspamout07 X-Session-Marker: 726F737465647440676F6F646D69732E6F7267 X-Session-ID: U2FsdGVkX19dmni3gDNOYbl6Buih8pDWlCcmVoa3n6g= X-HE-Tag: 1749782947-201819 X-HE-Meta: U2FsdGVkX1+Npnbb2LjhalCEdzBhqg8nBpYAH6nNAKTfYYmARJVFTicOE31+R8LLN0xAMDnEKluS4+g0zXdLpSVrL11sDFrm0ft8zXX9XIx7L3dJz/rr425dPVXnHrUTN0fkL2lyzvgYVKC9sij/YPsj2qZ1pYyArdMcjteIHKoa71jfXcbNqwAAFl85SHi8czMXLA1yWkRQ4n2xbSt/zkjKL0yn7kNLr+XY8mum1jMIbJwbDp8rf9SvGVzq89DlWAZLKIZvRg2OEbEgE7p0hDChYdDXaR83K9m8JgznTq4dLYEea/+2kv/3sNbD6jWWmsVSbh4I/YNxW9cDYWH6qiEoqVSRhJs6aO8se8AB7Mgq0PdUtAqjTlia8zhlyjj0obdTKp5CvMHQs8Tc4RbWMQ== I have code that will trigger a warning if a trace event is defined but not used[1]. It gives a list of unused events. Here's what I have for erofs: warning: tracepoint 'erofs_destroy_inode' is unused. Each trace event can take up to around 5K in memory regardless if they are used or not. Soon there will be warnings when they are defined but not used. Please remove any unused trace event or at least hide it under an #ifdef if they are used within configs. I'm planning on adding these warning in the next merge window. Thanks, -- Steve [1] https://lore.kernel.org/linux-trace-kernel/20250612235827.011358765@goodmis.org/