linux-kernel - Re: [PATCH v1 0/2] Add MSR-based RAPL PMU support

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Message-ID: <515d0c022fff823eb7dbad302ab2b4443d6926fd.camel@intel.com>
Date: Fri, 21 Nov 2025 01:49:59 +0000
From: "Pandruvada, Srinivas" <srinivas.pandruvada@...el.com>
To: "sathyanarayanan.kuppuswamy@...ux.intel.com"
	<sathyanarayanan.kuppuswamy@...ux.intel.com>, "rafael@...nel.org"
	<rafael@...nel.org>, "daniel.lezcano@...aro.org" <daniel.lezcano@...aro.org>
CC: "Zhang, Rui" <rui.zhang@...el.com>, "lukasz.luba@....com"
	<lukasz.luba@....com>, "linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v1 0/2] Add MSR-based RAPL PMU support

On Thu, 2025-11-20 at 16:05 -0800, Kuppuswamy Sathyanarayanan wrote:
> This patch series enables MSR-based PMU support for the Intel RAPL
> driver in the Linux powercap subsystem.
> 
> Following are the patch details:
> 
> Patch 1/2 - Preparatory patch that updates the read_raw() interface
>             to allow atomic-context callers.
> 
> Patch 2/2 - More details about motivation of this series and adds
>             MSR-based RAPL PMU access support.
> 
> This series has been tested and verified in the Panther Lake and
> Wildcat Lake platforms using perf tool.
> 
> Please let me know your review comments.
> 

Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>


> Kuppuswamy Sathyanarayanan (2):
>   powercap: intel_rapl: Prepare read_raw interface for atomic-context
>     callers
>   powercap: intel_rapl: Enable MSR-based RAPL PMU support
> 
>  drivers/powercap/intel_rapl_common.c          | 36 +++++++++--------
>  drivers/powercap/intel_rapl_msr.c             | 40
> +++++++++++++++++--
>  drivers/powercap/intel_rapl_tpmi.c            |  2 +-
>  .../int340x_thermal/processor_thermal_rapl.c  |  2 +-
>  include/linux/intel_rapl.h                    |  2 +-
>  5 files changed, 59 insertions(+), 23 deletions(-)
>