From nobody Mon Feb 9 22:18:53 2026 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 93365330B12; Mon, 26 Jan 2026 10:19:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769422751; cv=none; b=N6Bk8ddMwteVg0J/b0FpMhdLC4tWhsO1GEvdvt0+jvBoim7imzR1Evj5dZ1YpVYKLxxgL2yUSIIxhoh5KT9Ip15VZ7CU4VPzmkZe7pTW7YZ+de7NsBaT1amQ9vyGjyPJJ4ge17IP+HiwADodeAEsvoOfHXbRXyl591YpPgbtSro= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769422751; c=relaxed/simple; bh=bOKPuomEMnmOPegpG/zRmP8QZ+QTrtrDMU5RfPkZqpU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=M9BpODdM34uyQQmUdl8WUr9yvdZRQHZN/pqaBjOyC7UgUdfIRpjenynoLikC9ze3FJcMyNxPdsVKjrvgyiyf7UKtUV+TAym6Q9GILkFIVNamGzNmslz5+MsmO0njhNPkos2V1Q8EVmAOkfY65zHvrEeegMlf6PdxnuKmD8OGEug= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 75A6F339; Mon, 26 Jan 2026 02:19:02 -0800 (PST) Received: from e135073.nice.arm.com (e135073.arm.com [10.34.125.23]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 86CB83F632; Mon, 26 Jan 2026 02:19:05 -0800 (PST) From: Pierre Gondois To: linux-kernel@vger.kernel.org Cc: Jie Zhan , zhenglifeng1@huawei.com, Ionela Voinescu , Christian Loehle , sumitg@nvidia.com, Pierre Gondois , "Rafael J. Wysocki" , Viresh Kumar , Huang Rui , "Gautham R. Shenoy" , Mario Limonciello , Perry Yuan , Srinivas Pandruvada , Len Brown , Saravana Kannan , linux-pm@vger.kernel.org Subject: [PATCH 4/6] cpufreq: Update .set_boost() callbacks to rely on boost_freq_req Date: Mon, 26 Jan 2026 11:18:13 +0100 Message-ID: <20260126101826.94030-5-pierre.gondois@arm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260126101826.94030-1-pierre.gondois@arm.com> References: <20260126101826.94030-1-pierre.gondois@arm.com> 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" In the existing .set_boost() callbacks: - Don't update policy->max as this is done through the qos notifier cpufreq_notifier_max() which calls cpufreq_set_policy(). - Remove freq_qos_update_request() calls as the qos request is now done in policy_set_boost() and updates the new boost_freq_req Note: cpufreq_frequency_table_cpuinfo() is also called through: cpufreq_policy_online() \-cpufreq_table_validate_and_sort() \-cpufreq_frequency_table_cpuinfo() which relies on cpufreq_frequency_table_cpuinfo() to set policy->min and max initizalization at driver init. This regression is solved in the next patch. Note2: acpi-cpufreq.c seems to be the only cpufreq driver not setting cpuinfo.max_freq. Populate it the nominal frequency at driver init. Signed-off-by: Pierre Gondois --- drivers/cpufreq/acpi-cpufreq.c | 1 + drivers/cpufreq/amd-pstate.c | 2 -- drivers/cpufreq/cppc_cpufreq.c | 10 ++-------- drivers/cpufreq/cpufreq.c | 16 +++++++--------- drivers/cpufreq/freq_table.c | 7 +++---- 5 files changed, 13 insertions(+), 23 deletions(-) diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c index e73a66785d69d..6a6e26e1be14a 100644 --- a/drivers/cpufreq/acpi-cpufreq.c +++ b/drivers/cpufreq/acpi-cpufreq.c @@ -857,6 +857,7 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy = *policy) * governor from selecting inadequate CPU frequencies. */ arch_set_max_freq_ratio(true); + policy->cpuinfo.max_freq =3D nominal_freq; } =20 policy->freq_table =3D freq_table; diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c index c45bc98721d24..310d5938cbdf6 100644 --- a/drivers/cpufreq/amd-pstate.c +++ b/drivers/cpufreq/amd-pstate.c @@ -756,8 +756,6 @@ static int amd_pstate_cpu_boost_update(struct cpufreq_p= olicy *policy, bool on) else if (policy->cpuinfo.max_freq > nominal_freq) policy->cpuinfo.max_freq =3D nominal_freq; =20 - policy->max =3D policy->cpuinfo.max_freq; - if (cppc_state =3D=3D AMD_PSTATE_PASSIVE) { ret =3D freq_qos_update_request(&cpudata->req[1], policy->cpuinfo.max_fr= eq); if (ret < 0) diff --git a/drivers/cpufreq/cppc_cpufreq.c b/drivers/cpufreq/cppc_cpufreq.c index 9eac77c4f2944..4c46c7ea318eb 100644 --- a/drivers/cpufreq/cppc_cpufreq.c +++ b/drivers/cpufreq/cppc_cpufreq.c @@ -775,17 +775,11 @@ static int cppc_cpufreq_set_boost(struct cpufreq_poli= cy *policy, int state) { struct cppc_cpudata *cpu_data =3D policy->driver_data; struct cppc_perf_caps *caps =3D &cpu_data->perf_caps; - int ret; =20 if (state) - policy->max =3D cppc_perf_to_khz(caps, caps->highest_perf); + policy->cpuinfo.max_freq =3D cppc_perf_to_khz(caps, caps->highest_perf); else - policy->max =3D cppc_perf_to_khz(caps, caps->nominal_perf); - policy->cpuinfo.max_freq =3D policy->max; - - ret =3D freq_qos_update_request(policy->max_freq_req, policy->max); - if (ret < 0) - return ret; + policy->cpuinfo.max_freq =3D cppc_perf_to_khz(caps, caps->nominal_perf); =20 return 0; } diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 505da5b00e575..43bf6aed90e49 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -1503,10 +1503,14 @@ static int cpufreq_policy_online(struct cpufreq_pol= icy *policy, goto out_destroy_policy; } =20 + /* + * If boost is supported, + * init the constraint with cpuinfo.max_freq. + */ ret =3D freq_qos_add_request(&policy->constraints, policy->boost_freq_req, FREQ_QOS_MAX, - FREQ_QOS_MAX_DEFAULT_VALUE); + policy->cpuinfo.max_freq); if (ret < 0) { /* * So we don't call freq_qos_remove_request() for an @@ -2821,16 +2825,10 @@ int cpufreq_boost_set_sw(struct cpufreq_policy *pol= icy, int state) return -ENXIO; =20 ret =3D cpufreq_frequency_table_cpuinfo(policy); - if (ret) { + if (ret) pr_err("%s: Policy frequency update failed\n", __func__); - return ret; - } =20 - ret =3D freq_qos_update_request(policy->max_freq_req, policy->max); - if (ret < 0) - return ret; - - return 0; + return ret; } EXPORT_SYMBOL_GPL(cpufreq_boost_set_sw); =20 diff --git a/drivers/cpufreq/freq_table.c b/drivers/cpufreq/freq_table.c index 7f251daf03ce3..9b37f37c36389 100644 --- a/drivers/cpufreq/freq_table.c +++ b/drivers/cpufreq/freq_table.c @@ -49,16 +49,15 @@ int cpufreq_frequency_table_cpuinfo(struct cpufreq_poli= cy *policy) max_freq =3D freq; } =20 - policy->min =3D policy->cpuinfo.min_freq =3D min_freq; - policy->max =3D max_freq; + policy->cpuinfo.min_freq =3D min_freq; /* * If the driver has set its own cpuinfo.max_freq above max_freq, leave * it as is. */ if (policy->cpuinfo.max_freq < max_freq) - policy->max =3D policy->cpuinfo.max_freq =3D max_freq; + policy->cpuinfo.max_freq =3D max_freq; =20 - if (policy->min =3D=3D ~0) + if (min_freq =3D=3D ~0) return -EINVAL; else return 0; --=20 2.43.0