linux-kernel - Re: [Linux-Xtensa] [PATCH v2] perf: add support for the xtensa architecture

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Date:	Thu, 2 Jan 2014 12:11:02 +0400
From:	Max Filippov <jcmvbkbc@...il.com>
To:	Baruch Siach <baruch@...s.co.il>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	"linux-xtensa@...ux-xtensa.org" <linux-xtensa@...ux-xtensa.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [Linux-Xtensa] [PATCH v2] perf: add support for the xtensa architecture

On Thu, Jan 2, 2014 at 11:57 AM, Baruch Siach <baruch@...s.co.il> wrote:
> Signed-off-by: Baruch Siach <baruch@...s.co.il>
> ---
> v2: use the "core ID" field from /proc/cpuinfo (Max Filippov)
> ---
>  tools/perf/perf.h | 7 +++++++
>  1 file changed, 7 insertions(+)

Acked-by: Max Filippov <jcmvbkbc@...il.com>

> diff --git a/tools/perf/perf.h b/tools/perf/perf.h
> index b079304bd53d..e441864dbe03 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   "core ID"
> +#endif
> +
>  #define barrier() asm volatile ("" ::: "memory")
>
>  #ifndef cpu_relax
> --
> 1.8.5.2

-- 
Thanks.
-- Max
--
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