linux-kernel - Re: [PATCH] perf/x86: fix RAPL rdmsrl

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Message-ID: <20140423190015.GF25378@pd.tnic>
Date:	Wed, 23 Apr 2014 21:00:15 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	Stephane Eranian <eranian@...gle.com>
Cc:	linux-kernel@...r.kernel.org, peterz@...radead.org, mingo@...e.hu,
	venkateshs@...gle.com, ak@...ux.intel.com, zheng.z.yan@...el.com
Subject: Re: [PATCH] perf/x86: fix RAPL rdmsrl_safe() usage

On Wed, Apr 23, 2014 at 07:04:19PM +0200, Stephane Eranian wrote:
> 
> This patch fixes a bug introduced by commit 24223657.

Maybe add

Fixes: <commit-id>

tag?

> The rdmsrl_safe() function returns 0 on success.
> The current code was failing to detect the RAPL PMU
> on real hardware  (missing /sys/devices/power) because
> the return value of rdmsrl_safe() was misinterpreted.
> 
> Signed-off-by: Stephane Eranian <eranian@...gle.com>

Acked-by: Borislav Petkov <bp@...e.de>

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
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