[Linux-Xtensa] [PATCH] perf: add support for the xtensa architecture

Baruch Siach baruch at tkos.co.il
Thu Jan 2 07:36:05 UTC 2014


Hi Max,

On Thu, Jan 02, 2014 at 11:22:56AM +0400, Max Filippov wrote:
> On Thu, Nov 28, 2013 at 4:07 PM, Baruch Siach <baruch at tkos.co.il> wrote:
> > Signed-off-by: Baruch Siach <baruch at tkos.co.il>
> > ---
> >  tools/perf/perf.h | 7 +++++++
> >  1 file changed, 7 insertions(+)
> >
> > diff --git a/tools/perf/perf.h b/tools/perf/perf.h
> > index b079304..ebb651d 100644
> > --- a/tools/perf/perf.h
> > +++ b/tools/perf/perf.h
> > @@ -132,6 +132,13 @@
> >  #define CPUINFO_PROC   "CPU"
> >  #endif
> >
> > +#ifdef __xtensa__
> > +#define mb()           asm volatile("memw" ::: "memory")
> > +#define wmb()          asm volatile("memw" ::: "memory")
> > +#define rmb()          asm volatile("" ::: "memory")
> > +#define CPUINFO_PROC   "model"
> 
> 'model' line in the /proc/cpuinfo displays xtensa architecture
> version, proper core name is displayed in the 'core ID' line.

I wasn't really sure about that. I'll change it, anyway. This is also an 
opportunity to resend this patch.

baruch

> > +#endif
> > +
> >  #define barrier() asm volatile ("" ::: "memory")
> >
> >  #ifndef cpu_relax
> > --
> > 1.8.4.3

-- 
     http://baruch.siach.name/blog/                  ~. .~   Tk Open Systems
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