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[141.239.158.86]) by smtp.gmail.com with ESMTPSA id m12-20020a170902bb8c00b001e0449adfaesm4994926pls.191.2024.03.25.11.52.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 25 Mar 2024 11:52:51 -0700 (PDT) Sender: Tejun Heo Date: Mon, 25 Mar 2024 08:52:50 -1000 From: Tejun Heo To: Lai Jiangshan Cc: linux-kernel@vger.kernel.org, Lai Jiangshan Subject: Re: [PATCH 2/4] workqueue: Reorder the fields in struct workqueue_attrs Message-ID: References: <20240308094253.2104-1-jiangshanlai@gmail.com> <20240308094253.2104-3-jiangshanlai@gmail.com> 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-Disposition: inline In-Reply-To: <20240308094253.2104-3-jiangshanlai@gmail.com> Hello, On Fri, Mar 08, 2024 at 05:42:51PM +0800, Lai Jiangshan wrote: > From: Lai Jiangshan > > So that its size is reduced from 40 to 32 in 64bit kernel, and it can be > saved more when allocated with kmalloc() in alloc_workqueue_attrs(). Does this matter tho? Also, the sizing would be dependent on the number of supported CPUs, right? So, before, the order was - nice, cpumasks, affinity scope related stuff, and then ordered flag. After, the cpumasks and affinity scope stuff are mixed. Unless the saving is actually meaningful, I'd rather keep the current ordering. Thanks. -- tejun