From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S936981AbdEWQHo (ORCPT ); Tue, 23 May 2017 12:07:44 -0400 Received: from resqmta-ch2-06v.sys.comcast.net ([69.252.207.38]:46800 "EHLO resqmta-ch2-06v.sys.comcast.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965340AbdEWQHS (ORCPT ); Tue, 23 May 2017 12:07:18 -0400 Date: Tue, 23 May 2017 11:07:14 -0500 (CDT) From: Christoph Lameter X-X-Sender: cl@east.gentwo.org To: Michal Hocko cc: Wei Yang , penberg@kernel.org, rientjes@google.com, akpm@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 0/6] refine and rename slub sysfs In-Reply-To: <20170523063911.GC12813@dhcp22.suse.cz> Message-ID: References: <20170517141146.11063-1-richard.weiyang@gmail.com> <20170518090636.GA25471@dhcp22.suse.cz> <20170523032705.GA4275@WeideMBP.lan> <20170523063911.GC12813@dhcp22.suse.cz> Content-Type: text/plain; charset=US-ASCII X-CMAE-Envelope: MS4wfPh4O24w0JCucm7z4rzoaBjQn1vni/Xd3yk1RuIgMiVttQzT5TyiOgXN6I1CCpPBUgMGTrL1g+ajvYL2ozFCgmKKXy81Py9bn4B7pBbQkGDVwGxLZZL3 zzbyXyqbN0SoEK9O7ZcLYR/6GF6WnDSjzG8zUqU4RrCYrSOiH8Wm1jgmMTBGsqahaSZA0ZjZMCUdJjwTNREDjXv4GCqMUGk+K+EjZXknRNCvdymmGYb60+50 OttKHS0vfmw3DR1bVYicyW8i2LMZRAdZ8eEL5Hts0AFKfXJv5gpic8Zrvat4JuL0kthnvAu0zD8uIB4uToDj3HijiBdDyGrljGrXxthhvA0bGR1lN1llrqE2 iiADUChs Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 23 May 2017, Michal Hocko wrote: > > >_Why_ do we need all this? > > > > To have a clear statistics for each slab level. > > Is this worth risking breakage of the userspace which consume this data > now? Do you have any user space code which will greatly benefit from the > new data and which couldn't do the same with the current format/output? > > If yes this all should be in the changelog. And the patchset would also need to update the user space tool that is in the kernel tree... Again Wei please do not use "level". Type?