[lkml]   [2014]   [Feb]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [patch/rfc] perf on raspberry-pi without overflow interrupt
Hi Vince,

On Fri, Jan 17, 2014 at 05:45:04AM +0000, Vince Weaver wrote:
> On Thu, 16 Jan 2014, Peter Zijlstra wrote:
> > Yeah I suppose we could do something like that. Maybe something like:
> >
> > # cat /sys/bus/event_source/devices/cpu/flags
> > int precise filter
> wouldn't that violate the "one value per file" rule?
> I guess we could also stick it in the mmap page somewhere, as tools like
> PAPI already have to check there for things like rdpmc support.
> Anyway, here's a first pass at a generic fix for this issue. I'm sure the
> code is pretty horrible, I don't usually mess with the perf code at this
> level. I haven't tested yet as it touched enough files that the rasp-pi
> is going to take a few hours to finish compiling.
> Am I on the right track, or totally off here?

Where did we get to with this? If the generic changes are going to take some
time, I'm happy to take a temporary (non-invasive) fix in the ARM backend while
you sort out the core.


 \ /
  Last update: 2014-02-24 12:21    [W:0.134 / U:1.988 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site