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cpufreq: CPPC: Fix wrong max_freq in policy initialization

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In policy initialization, policy->max and policy->cpuinfo.max_freq are
always set to the value calculated from caps->nominal_perf.

This will cause the frequency stay on base frequency even if the policy
is already boosted when a CPU is going online.

Fix this by using policy->boost_enabled to determine which value should
be set.

Signed-off-by: Lifeng Zheng <zhenglifeng1@huawei.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Link: https://patch.msgid.link/20250117101457.1530653-4-zhenglifeng1@huawei.com
[ rjw: Changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Lifeng Zheng
2025-01-17 18:14:56 +08:00
committed by Rafael J. Wysocki
parent dd016f379e
commit 03d8b4e762
1 changed files with 3 additions and 2 deletions
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5
drivers/cpufreq/cppc_cpufreq.c
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@@ -611,7 +611,8 @@ static int cppc_cpufreq_cpu_init(struct cpufreq_policy *policy)
* Section 8.4.7.1.1.5 of ACPI 6.1 spec)
*/
policy->min = cppc_perf_to_khz(caps, caps->lowest_nonlinear_perf);
policy->max = cppc_perf_to_khz(caps, caps->nominal_perf);
policy->max = cppc_perf_to_khz(caps, policy->boost_enabled ?
caps->highest_perf : caps->nominal_perf);
/*
* Set cpuinfo.min_freq to Lowest to make the full range of performance
@@ -619,7 +620,7 @@ static int cppc_cpufreq_cpu_init(struct cpufreq_policy *policy)
* nonlinear perf
*/
policy->cpuinfo.min_freq = cppc_perf_to_khz(caps, caps->lowest_perf);
policy->cpuinfo.max_freq = cppc_perf_to_khz(caps, caps->nominal_perf);
policy->cpuinfo.max_freq = policy->max;
policy->transition_delay_us = cppc_cpufreq_get_transition_delay_us(cpu);
policy->shared_type = cpu_data->shared_type;