linux-kernel - [PATCH 0/3] driver/tool fix for SPR Dram RAPL Domain

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Message-Id: <20220924054738.12076-1-rui.zhang@intel.com>
Date:   Sat, 24 Sep 2022 13:47:35 +0800
From:   Zhang Rui <rui.zhang@...el.com>
To:     peterz@...radead.org, rjw@...ysocki.net, len.brown@...el.com
Cc:     mingo@...hat.com, linux-pm@...r.kernel.org, x86@...nel.org,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
        ak@...ux.intel.com, kan.liang@...ux.intel.com,
        artem.bityutskiy@...ux.intel.com
Subject: [PATCH 0/3] driver/tool fix for SPR Dram RAPL Domain

Intel Xeon servers used to use a fixed energy resolution (15.3uj) for
Dram RAPL domain, starting from HasWell-X.

But on SPR, this changes.
The Dram RAPL domain uses 61uj energy resolution, which follows the
standard energy resolution as described in MSR_RAPL_POWER_UNIT.

There are a couple of places that have implemented the energy unit quirk
for SPR Dram RAPL domain, including intel-rapl driver, rapl perf pmu and
the turbostat tool.

This patch series fixes them all, although they belong to different
components.

thanks,
rui