From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: multipart/mixed; boundary="===============9139339401808654069==" MIME-Version: 1.0 From: Chris Ferron Subject: Re: [Powertop] Powertop doesn't detects sleeping ARM cores Date: Wed, 19 Sep 2012 08:15:59 -0700 Message-ID: <5059E1AF.3010000@linux.intel.com> In-Reply-To: 505981D3.7010403@samsung.com To: powertop@lists.01.org List-ID: --===============9139339401808654069== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable On 09/19/2012 01:26 AM, Igor Zhbanov wrote: > Hi, > > Here is some notes to my previous post. > > I mean that only online cores are shown in /proc/cpuinfo. > So the PowerTOP doesn't count currently offline ones. > And you must run the PowerTOP on a heavy loaded system > to let the PowerTOP see all CPU cores. > > Therefore it is impossible to run the PowerTOP before starting > of heavy application to get information about all CPU cores. > > Probably the PowerTOP could cache CPU information in some file, > so it will be possible to register trace events for all cores. > Off hand I don't have a good solution to help your ARM story. Your notes = are interesting and I agree this is something that ARM is going to need. = Do you have a complete solution you would like to purpose? I assume you = have done some hacking to get around this, but if you have taken that = and tuned it i suggest purposing the change. If you find a solution that = doesn't digress the Architectures, and corrects the ARM story then = please submit patches. I would be interested in seeing what you have = come up with. I will try and look for a general solution, are there any other ARM = advocates on this list who would like to chime in? -C --===============9139339401808654069==--