This is a note to let you know that I've just added the patch titled
powercap: intel_rapl: Use standard Energy Unit for SPR Dram RAPL domain
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
powercap-intel_rapl-use-standard-energy-unit-for-spr-dram-rapl-domain.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 4c081324df5608b73428662ca54d5221ea03a6bd Mon Sep 17 00:00:00 2001
From: Zhang Rui <rui.zhang@xxxxxxxxx>
Date: Sat, 24 Sep 2022 13:47:36 +0800
Subject: powercap: intel_rapl: Use standard Energy Unit for SPR Dram RAPL domain
From: Zhang Rui <rui.zhang@xxxxxxxxx>
commit 4c081324df5608b73428662ca54d5221ea03a6bd upstream.
Intel Xeon servers used to use a fixed energy resolution (15.3uj) for
Dram RAPL domain. But on SPR, Dram RAPL domain follows the standard
energy resolution as described in MSR_RAPL_POWER_UNIT.
Remove the SPR dram_domain_energy_unit quirk.
Fixes: 2d798d9f5967 ("powercap: intel_rapl: add support for Sapphire Rapids")
Signed-off-by: Zhang Rui <rui.zhang@xxxxxxxxx>
Tested-by: Wang Wendy <wendy.wang@xxxxxxxxx>
Cc: 5.9+ <stable@xxxxxxxxxxxxxxx> # 5.9+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/powercap/intel_rapl_common.c | 1 -
1 file changed, 1 deletion(-)
--- a/drivers/powercap/intel_rapl_common.c
+++ b/drivers/powercap/intel_rapl_common.c
@@ -979,7 +979,6 @@ static const struct rapl_defaults rapl_d
.check_unit = rapl_check_unit_core,
.set_floor_freq = set_floor_freq_default,
.compute_time_window = rapl_compute_time_window_core,
- .dram_domain_energy_unit = 15300,
.psys_domain_energy_unit = 1000000000,
};
Patches currently in stable-queue which might be from rui.zhang@xxxxxxxxx are
queue-5.10/powercap-intel_rapl-use-standard-energy-unit-for-spr-dram-rapl-domain.patch
