From nobody Fri Dec 19 22:01:12 2025 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 070A3245032; Wed, 15 Oct 2025 13:49:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760536185; cv=none; b=KCtkrfYh1Bf1+/sgZ/6bfxEYLOMDIWXeNBwhqMw6RbL6z9LSVbuGH4y8VSvf2+sO5qoJ6ommpSnF945JINVlq1ZXHze1sZzVjPYNUVSENKlxCTFkQBe1mVVMk32+sx7sx1fIkBTn4Fe32bccAHy4btgsW5sZejeDyzwGjZ1x+Fk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760536185; c=relaxed/simple; bh=VX55w5LNPSVmsOprzx3zNtIjFsD6cqbwWESSD8jO9JE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=UsGwMT/LAQxby1H7sg/prjf6qTbz1BDPsMY+Qb4em2ILU06NDFavYGmbWKvLoRlIQcuna/N8GtvIcch2nUfjYucWb9yYJ6IzxqP7IlYvBpRUlKn8fhzwZVdm0KjKueuB3B50BgB5+vRycyfXCUWwG5gMrsOA/58Qcu2IBctLhYI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ZusvWs72; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ZusvWs72" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A54C4C4CEFB; Wed, 15 Oct 2025 13:49:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1760536184; bh=VX55w5LNPSVmsOprzx3zNtIjFsD6cqbwWESSD8jO9JE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZusvWs72Lm9Ddj1nZyRoyGUtTB5RQsJn8JscndOkUuDI8/TcsIFNbVWWF/+CgZKUy nK21Y61U+JabZ5QT7UAL38msWaD8E7rxBDvOcNHmMBD1uBqFQUmdso0mSTl7i4ECJQ ApFweJiIzavCcoXLUD6EolbxesyM5BvQeuIb/5OUq9ZEq65i8fN0Ds9oNeijedSpk5 0LPzx1kBRqyz3W3KuZx8ElY0YmNwJneurkIq3LvYtxwyaAB03dtxlvDSubM1FPhiz5 it22lNhcXiPO0i5dWVe6v4Halb7P88lSYjDzCRvhZhsBPTd9ZCQWeL27KFdSpq9DK1 POXa5N5fTF3Yg== From: "Rafael J. Wysocki" To: Linux PM Cc: LKML , Lukasz Luba , Srinivas Pandruvada , Dietmar Eggemann , Christian Loehle , Yaxiong Tian Subject: [PATCH v2 1/3] cpufreq: intel_pstate: Add and use hybrid_get_cpu_type() Date: Wed, 15 Oct 2025 15:46:40 +0200 Message-ID: <1954386.tdWV9SEqCh@rafael.j.wysocki> Organization: Linux Kernel Development In-Reply-To: <2404176.ElGaqSPkdT@rafael.j.wysocki> References: <2404176.ElGaqSPkdT@rafael.j.wysocki> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Rafael J. Wysocki Introduce a function for identifying the type of a given CPU in a hybrid system, called hybrid_get_cpu_type(), and use if for hybrid scaling factor determination in hwp_get_cpu_scaling(). Signed-off-by: Rafael J. Wysocki --- v1 -> v2: No changes --- drivers/cpufreq/intel_pstate.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -912,6 +912,11 @@ static struct freq_attr *hwp_cpufreq_att [HWP_CPUFREQ_ATTR_COUNT] =3D NULL, }; =20 +static u8 hybrid_get_cpu_type(unsigned int cpu) +{ + return cpu_data(cpu).topo.intel_type; +} + static bool no_cas __ro_after_init; =20 static struct cpudata *hybrid_max_perf_cpu __read_mostly; @@ -2298,18 +2303,14 @@ static int knl_get_turbo_pstate(int cpu) static int hwp_get_cpu_scaling(int cpu) { if (hybrid_scaling_factor) { - struct cpuinfo_x86 *c =3D &cpu_data(cpu); - u8 cpu_type =3D c->topo.intel_type; - /* * Return the hybrid scaling factor for P-cores and use the * default core scaling for E-cores. */ - if (cpu_type =3D=3D INTEL_CPU_TYPE_CORE) + if (hybrid_get_cpu_type(cpu) =3D=3D INTEL_CPU_TYPE_CORE) return hybrid_scaling_factor; =20 - if (cpu_type =3D=3D INTEL_CPU_TYPE_ATOM) - return core_get_scaling(); + return core_get_scaling(); } =20 /* Use core scaling on non-hybrid systems. */