Re: [PATCH] powerpc: Export PIR data through sysfs

2011-11-10 Thread Ananth N Mavinakayanahalli
On Fri, Nov 11, 2011 at 03:18:14PM +1100, Benjamin Herrenschmidt wrote: > On Thu, 2011-11-10 at 14:18 +0530, Ananth N Mavinakayanahalli wrote: > > > > > From: Ananth N Mavinakayanahalli > > > > The Processor Identification Register (PIR) on some powerpc platforms > > provides information to dec

Re: [PATCH] powerpc: Export PIR data through sysfs

2011-11-10 Thread Benjamin Herrenschmidt
On Thu, 2011-11-10 at 14:18 +0530, Ananth N Mavinakayanahalli wrote: > > From: Ananth N Mavinakayanahalli > > The Processor Identification Register (PIR) on some powerpc platforms > provides information to decode the processor identification tag. > Decoding this information is platform specific

Re: [PATCH] powerpc: Export PIR data through sysfs

2011-11-10 Thread Ananth N Mavinakayanahalli
On Wed, Nov 09, 2011 at 09:48:25AM -0600, Scott Wood wrote: > On Wed, Nov 09, 2011 at 10:11:24AM +0530, Ananth N Mavinakayanahalli wrote: > > On Tue, Nov 08, 2011 at 10:59:46AM -0600, Scott Wood wrote: > > > On 11/08/2011 12:58 AM, Ananth N Mavinakayanahalli wrote: > > > > On Mon, Nov 07, 2011 at 1

Re: [PATCH] powerpc: Export PIR data through sysfs

2011-11-09 Thread Scott Wood
On Wed, Nov 09, 2011 at 10:11:24AM +0530, Ananth N Mavinakayanahalli wrote: > On Tue, Nov 08, 2011 at 10:59:46AM -0600, Scott Wood wrote: > > On 11/08/2011 12:58 AM, Ananth N Mavinakayanahalli wrote: > > > On Mon, Nov 07, 2011 at 11:18:32AM -0600, Scott Wood wrote: > > >> What use does userspace ha

Re: [PATCH] powerpc: Export PIR data through sysfs

2011-11-08 Thread Michael Ellerman
On Tue, 2011-11-08 at 10:59 -0600, Scott Wood wrote: > On 11/08/2011 12:58 AM, Ananth N Mavinakayanahalli wrote: > > On Mon, Nov 07, 2011 at 11:18:32AM -0600, Scott Wood wrote: > >> What use does userspace have for this? If you want to return the > >> currently executing CPU (which unless you're p

Re: [PATCH] powerpc: Export PIR data through sysfs

2011-11-08 Thread Ananth N Mavinakayanahalli
On Tue, Nov 08, 2011 at 10:59:46AM -0600, Scott Wood wrote: > On 11/08/2011 12:58 AM, Ananth N Mavinakayanahalli wrote: > > On Mon, Nov 07, 2011 at 11:18:32AM -0600, Scott Wood wrote: > >> What use does userspace have for this? If you want to return the > >> currently executing CPU (which unless y

Re: [PATCH] powerpc: Export PIR data through sysfs

2011-11-08 Thread Scott Wood
On 11/08/2011 12:58 AM, Ananth N Mavinakayanahalli wrote: > On Mon, Nov 07, 2011 at 11:18:32AM -0600, Scott Wood wrote: >> What use does userspace have for this? If you want to return the >> currently executing CPU (which unless you're pinned could change as soon >> as the value is read...), why n

Re: [PATCH] powerpc: Export PIR data through sysfs

2011-11-07 Thread Ananth N Mavinakayanahalli
On Mon, Nov 07, 2011 at 11:18:32AM -0600, Scott Wood wrote: > On 11/06/2011 10:47 PM, Ananth N Mavinakayanahalli wrote: > > The Processor Identification Register (PIR) on powerpc provides > > information to decode the processor identification tag. Decoding > > this information platform specfic. > >

Re: [PATCH] powerpc: Export PIR data through sysfs

2011-11-07 Thread Scott Wood
On 11/06/2011 10:47 PM, Ananth N Mavinakayanahalli wrote: > The Processor Identification Register (PIR) on powerpc provides > information to decode the processor identification tag. Decoding > this information platform specfic. > > Export PIR data via sysfs. > > (Powerpc manuals state this regist

[PATCH] powerpc: Export PIR data through sysfs

2011-11-06 Thread Ananth N Mavinakayanahalli
The Processor Identification Register (PIR) on powerpc provides information to decode the processor identification tag. Decoding this information platform specfic. Export PIR data via sysfs. (Powerpc manuals state this register is 'optional'. I am not sure though if there are any Linux supported