linux-kernel - [PATCH 1/3] powercap: intel_rapl: Use standard Energy Unit for SPR Dram RAPL domain

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Message-Id: <20220924054738.12076-2-rui.zhang@intel.com>
Date:   Sat, 24 Sep 2022 13:47:36 +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 1/3] powercap: intel_rapl: Use standard Energy Unit for SPR Dram RAPL domain

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@...el.com>
Tested-by: Wang Wendy <wendy.wang@...el.com>
---
 drivers/powercap/intel_rapl_common.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/powercap/intel_rapl_common.c b/drivers/powercap/intel_rapl_common.c
index 949eb90f5733..d8eaa04bf2af 100644
--- a/drivers/powercap/intel_rapl_common.c
+++ b/drivers/powercap/intel_rapl_common.c
@@ -1035,7 +1035,6 @@ static const struct rapl_defaults rapl_defaults_spr_server = {
 	.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,
 	.spr_psys_bits = true,
 };
-- 
2.25.1