On 03/29/2017 11:28 PM, Tejun Heo wrote: > On Wed, Mar 29, 2017 at 10:38:17AM +0800, Cao jin wrote: >> On 03/29/2017 12:00 AM, Tejun Heo wrote: >>> On Tue, Mar 28, 2017 at 04:35:07PM +0800, Cao jin wrote: >>>> Signed-off-by: Cao jin <caoj.fnst@xxxxxxxxxxxxxx> >>> >>> I'm not sure. I think I used it during development and it's not like >>> it costs anything to keep. >> >> It easily confusing newbies without any comments for its purpose. > > percpu variable handling is pretty complex to begin with. I don't buy > that an empty default attribute macro adds anything noticeable there. > >> Temporary using during development seems not good to persist. Could I >> know its purpose? > > I don't remember the exact details but at the same time I don't see > the value of the proposed change. We can apply or not apply the patch > and either way wouldn't make any noticeable difference. What's the > point? > > Thanks. > It doesn't matter whether apply or not. I just start to read these code and want to know what every tiny symbol is for. Thanks for your time. -- Sincerely, Cao jin