linux-kernel - Re: [PATCH] perf/x86/uncore: Fix IVT/SNB-EP uncore CBOX NID filter table

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Date:	Thu, 20 Feb 2014 14:20:13 +0800
From:	"Yan, Zheng" <zheng.z.yan@...el.com>
To:	Stephane Eranian <eranian@...gle.com>, linux-kernel@...r.kernel.org
CC:	peterz@...radead.org, mingo@...e.hu, ak@...ux.intel.com
Subject: Re: [PATCH] perf/x86/uncore: Fix IVT/SNB-EP uncore CBOX NID filter
 table

On 02/19/2014 09:10 PM, Stephane Eranian wrote:
> 
> This patch updates the CBOX PMU filters mapping tables for SNB-EP
> and IVT (model 45 and 62 respectively).
> 
> The NID umask always comes in addition to another umask.
> When set, the NID filter is applied.

Do you means the NID always applies for LLC_LOOKUP no matter what umask is.
If yes, I think it's better to define filter as SNBEP_CBO_EVENT_EXTRA_REG(0x34, 0xff, 0x6)

Regards
Yan, Zheng

> 
> The current mapping tables were missing some code/umask
> combinations to account for the NID umask. This patch
> fixes that.
>     
> Signed-off-by: Stephane Eranian <eranian@...gle.com>
> 
> diff --git a/arch/x86/kernel/cpu/perf_event_intel_uncore.c b/arch/x86/kernel/cpu/perf_event_intel_uncore.c
> --- a/arch/x86/kernel/cpu/perf_event_intel_uncore.c
> +++ b/arch/x86/kernel/cpu/perf_event_intel_uncore.c
> @@ -501,8 +501,11 @@ static struct extra_reg snbep_uncore_cbox_extra_regs[] = {
>  	SNBEP_CBO_EVENT_EXTRA_REG(SNBEP_CBO_PMON_CTL_TID_EN,
>  				  SNBEP_CBO_PMON_CTL_TID_EN, 0x1),
>  	SNBEP_CBO_EVENT_EXTRA_REG(0x0334, 0xffff, 0x4),
> +	SNBEP_CBO_EVENT_EXTRA_REG(0x4334, 0xffff, 0x6),
>  	SNBEP_CBO_EVENT_EXTRA_REG(0x0534, 0xffff, 0x4),
> +	SNBEP_CBO_EVENT_EXTRA_REG(0x4534, 0xffff, 0x6),
>  	SNBEP_CBO_EVENT_EXTRA_REG(0x0934, 0xffff, 0x4),
> +	SNBEP_CBO_EVENT_EXTRA_REG(0x4934, 0xffff, 0x6),
>  	SNBEP_CBO_EVENT_EXTRA_REG(0x4134, 0xffff, 0x6),
>  	SNBEP_CBO_EVENT_EXTRA_REG(0x0135, 0xffff, 0x8),
>  	SNBEP_CBO_EVENT_EXTRA_REG(0x0335, 0xffff, 0x8),
> @@ -1178,10 +1181,15 @@ static struct extra_reg ivt_uncore_cbox_extra_regs[] = {
>  	SNBEP_CBO_EVENT_EXTRA_REG(SNBEP_CBO_PMON_CTL_TID_EN,
>  				  SNBEP_CBO_PMON_CTL_TID_EN, 0x1),
>  	SNBEP_CBO_EVENT_EXTRA_REG(0x1031, 0x10ff, 0x2),
> +	SNBEP_CBO_EVENT_EXTRA_REG(0x1134, 0xffff, 0x4),
> +	SNBEP_CBO_EVENT_EXTRA_REG(0x4134, 0xffff, 0xc),
> +	SNBEP_CBO_EVENT_EXTRA_REG(0x5134, 0xffff, 0xc),
>  	SNBEP_CBO_EVENT_EXTRA_REG(0x0334, 0xffff, 0x4),
> +	SNBEP_CBO_EVENT_EXTRA_REG(0x4334, 0xffff, 0xc),
>  	SNBEP_CBO_EVENT_EXTRA_REG(0x0534, 0xffff, 0x4),
> +	SNBEP_CBO_EVENT_EXTRA_REG(0x4534, 0xffff, 0xc),
>  	SNBEP_CBO_EVENT_EXTRA_REG(0x0934, 0xffff, 0x4),
> -	SNBEP_CBO_EVENT_EXTRA_REG(0x4134, 0xffff, 0xc),
> +	SNBEP_CBO_EVENT_EXTRA_REG(0x4934, 0xffff, 0xc),
>  	SNBEP_CBO_EVENT_EXTRA_REG(0x0135, 0xffff, 0x10),
>  	SNBEP_CBO_EVENT_EXTRA_REG(0x0335, 0xffff, 0x10),
>  	SNBEP_CBO_EVENT_EXTRA_REG(0x2135, 0xffff, 0x10),
> 

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