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 A2F31234964; Wed, 1 Oct 2025 06:12:48 +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=1759299168; cv=none; b=LB9ZXQYNux2HeJ7IJEm9ubBJ7ekCSLlPqz4nnIGX8D+n8+5Z8GyCEGEAjdQKXn9WCiq0yew7eS8IugqjvGBaYVJSSHTZAvadCybKo6uQe51CpbxV5n+a0cs8jKABlOvtPgjuEZuM0KYMQJ4SEIQfsgCQVuwg7vm+II9VNA7kPsU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759299168; c=relaxed/simple; bh=0NkqnWA2gnuNS3Z+dXQyRJktMjrjg9exYNHx9RAs/Ns=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=BT2qbtw4TtS8LKXo0Of70KwDOUL7krAzXn5wZ7Q00f7y2VnWbkVBske5sxEXaRaAKAueILfV4eQQ1rae6eh9RCA3uRQjAWw91YcrolRMcX5sR3JvFUbSN4CcY2Ru+p9c8EAC+P+6g80vAxHiA7Cn6+163TbjTF5RVPcwNQ+wf4M= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=jDPekD+o; 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="jDPekD+o" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4F19DC4CEF4; Wed, 1 Oct 2025 06:12:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1759299168; bh=0NkqnWA2gnuNS3Z+dXQyRJktMjrjg9exYNHx9RAs/Ns=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=jDPekD+oSIHYglKUV40Sas9Nc38YGV4JdDq6xfoV+48J32tCwPRUGPC0gb0GIY8im ABCb4lrAU7XN8lpCi5SgWngFgzXTmwzKkn7Kh+ierZSNrnss+6jbgBVKEX6Kay7UGU OySb0XiWuRY/s/eVxjSvBcsI4nuhtp2ERAtfX6tQv1lKd7aB+j/FGqV+b9VhTbo5Mt BtzlITQGRADc5Axwoz7CYSdZmQEtkBEqtypu4lYkPraQA+gyNY8h36pCIcYE8qy4mV bS5IFEPdY2D0Ej7oLTZuB2YLYzQVCsy244angK3amueoETWzLKM51DXtXKiSg+DUaW s+DalWq88p2qw== Message-ID: <6a485ace-be08-4d52-bdf5-7f5be2f58418@kernel.org> Date: Wed, 1 Oct 2025 15:12:40 +0900 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 01/15] blktrace: only calculate trace length once To: Johannes Thumshirn , Jens Axboe Cc: Steven Rostedt , Masami Hiramatsu , Mathieu Desnoyers , linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-btrace@vger.kernel.org, John Garry , Hannes Reinecke , Christoph Hellwig , Naohiro Aota , Shinichiro Kawasaki , Chaitanya Kulkarni , "Martin K . Petersen" References: <20250925150231.67342-1-johannes.thumshirn@wdc.com> <20250925150231.67342-2-johannes.thumshirn@wdc.com> From: Damien Le Moal Content-Language: en-US Organization: Western Digital Research In-Reply-To: <20250925150231.67342-2-johannes.thumshirn@wdc.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 9/26/25 00:02, Johannes Thumshirn wrote: > De-duplicate the calculation of the trace length instead of doing the > calculation twice, once for calling trace_buffer_lock_reserve() and once > for calling relay_reserve(). > > Reviewed-by: Christoph Hellwig > Signed-off-by: Johannes Thumshirn Reviewed-by: Damien Le Moal -- Damien Le Moal Western Digital Research