linux-kernel - [PATCH] x86/rapl: Treat Tigerlake like Icelake

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Message-ID: <20221228113454.1199118-1-rodrigo.vivi@intel.com>
Date:   Wed, 28 Dec 2022 06:34:54 -0500
From:   Rodrigo Vivi <rodrigo.vivi@...el.com>
To:     <x86@...nel.org>, <linux-perf-users@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
CC:     Zhang Rui <rui.zhang@...el.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Chris Wilson <chris@...is-wilson.co.uk>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>
Subject: [PATCH] x86/rapl: Treat Tigerlake like Icelake

From: Chris Wilson <chris@...is-wilson.co.uk>

Since Tigerlake seems to have inherited its cstates and other rapl power
caps from Icelake, assume it also follows Icelake for its rapl events.

Signed-off-by: Chris Wilson <chris@...is-wilson.co.uk>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@...el.com>
---

Based on the recent additions it looks like Tigerlake was a missed
case in these events/rapl.c and that this old patch from Chris is the
right way to go.

I found this patch on our drm-intel's topic/core-for-CI branch while
rebasing it towards v6.2-rc1.

 arch/x86/events/rapl.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/events/rapl.c b/arch/x86/events/rapl.c
index a829492bca4c..ae5779ea4417 100644
--- a/arch/x86/events/rapl.c
+++ b/arch/x86/events/rapl.c
@@ -800,6 +800,8 @@ static const struct x86_cpu_id rapl_model_match[] __initconst = {
 	X86_MATCH_INTEL_FAM6_MODEL(ICELAKE_X,		&model_hsx),
 	X86_MATCH_INTEL_FAM6_MODEL(COMETLAKE_L,		&model_skl),
 	X86_MATCH_INTEL_FAM6_MODEL(COMETLAKE,		&model_skl),
+	X86_MATCH_INTEL_FAM6_MODEL(TIGERLAKE_L,		&model_skl),
+	X86_MATCH_INTEL_FAM6_MODEL(TIGERLAKE,		&model_skl),
 	X86_MATCH_INTEL_FAM6_MODEL(ALDERLAKE,		&model_skl),
 	X86_MATCH_INTEL_FAM6_MODEL(ALDERLAKE_L,		&model_skl),
 	X86_MATCH_INTEL_FAM6_MODEL(ALDERLAKE_N,		&model_skl),
-- 
2.38.1