linux-kernel - [PATCH v1 1/4] Revert "cpufreq: Fix re-boost issue after hotplugging a CPU"

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Message-ID: <20251204101344.192678-2-pierre.gondois@arm.com>
Date: Thu,  4 Dec 2025 11:13:37 +0100
From: Pierre Gondois <pierre.gondois@....com>
To: linux-kernel@...r.kernel.org
Cc: Christian Loehle <christian.loehle@....com>,
	Ionela Voinescu <ionela.voinescu@....com>,
	zhenglifeng1@...wei.com,
	Jie Zhan <zhanjie9@...ilicon.com>,
	Pierre Gondois <pierre.gondois@....com>,
	Huang Rui <ray.huang@....com>,
	"Gautham R. Shenoy" <gautham.shenoy@....com>,
	Mario Limonciello <mario.limonciello@....com>,
	Perry Yuan <perry.yuan@....com>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Viresh Kumar <viresh.kumar@...aro.org>,
	linux-pm@...r.kernel.org
Subject: [PATCH v1 1/4] Revert "cpufreq: Fix re-boost issue after hotplugging a CPU"

policy->max_freq_req represents the maximum allowed frequency as
requested by the policyX/scaling_max_freq sysfs file. This request
applies to all CPUs of the policy. It is not possible to request
a per-CPU maximum frequency.

Thus, the interaction between the policy boost and scaling_max_freq
settings should be handled by adding a boost specific QoS constraint.
This will be handled in the following patches.

This reverts commit 1608f0230510489d74a2e24e47054233b7e4678a.

Signed-off-by: Pierre Gondois <pierre.gondois@....com>
---
 drivers/cpufreq/cpufreq.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 852e024facc3c..11b29c7dbea9e 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -1478,10 +1478,6 @@ static int cpufreq_policy_online(struct cpufreq_policy *policy,
 
 		blocking_notifier_call_chain(&cpufreq_policy_notifier_list,
 				CPUFREQ_CREATE_POLICY, policy);
-	} else {
-		ret = freq_qos_update_request(policy->max_freq_req, policy->max);
-		if (ret < 0)
-			goto out_destroy_policy;
 	}
 
 	if (cpufreq_driver->get && has_target()) {
-- 
2.43.0