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

Max Filippov jcmvbkbc at gmail.com
Thu Jan 2 07:22:56 UTC 2014


Hi Baruch,

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.

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

-- 
Thanks.
-- Max


More information about the linux-xtensa mailing list