linux-kernel - Re: [PATCH 1/6] perf, x86: Basic Haswell LBR call stack support

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Message-ID: <1350902138.2768.86.camel@twins>
Date:	Mon, 22 Oct 2012 12:35:38 +0200
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	"Yan, Zheng" <zheng.z.yan@...el.com>
Cc:	linux-kernel@...r.kernel.org, eranian@...gle.com,
	ak@...ux.intel.com
Subject: Re: [PATCH 1/6] perf, x86: Basic Haswell LBR call stack support

On Mon, 2012-10-22 at 14:11 +0800, Yan, Zheng wrote:
> --- a/include/uapi/linux/perf_event.h
> +++ b/include/uapi/linux/perf_event.h
> @@ -160,8 +160,9 @@ enum perf_branch_sample_type {
>         PERF_SAMPLE_BRANCH_ABORT        = 1U << 7, /* transaction aborts */
>         PERF_SAMPLE_BRANCH_INTX         = 1U << 8, /* in transaction (flag) */
>         PERF_SAMPLE_BRANCH_NOTX         = 1U << 9, /* not in transaction (flag) */
> +       PERF_SAMPLE_BRANCH_CALL_STACK   = 1U << 10, /* call stack */
>  
> -       PERF_SAMPLE_BRANCH_MAX          = 1U << 10, /* non-ABI */
> +       PERF_SAMPLE_BRANCH_MAX          = 1U << 11, /* non-ABI */
>  }; 

You add an ABI sample type without mentioning it in your changelog.. I
think I'll stop reading here.

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