diff mbox series

[v2,3/4] cpufreq: CPPC: Fix wrong max_freq in policy initialization

Message ID 20250117101457.1530653-4-zhenglifeng1@huawei.com
State New
Headers show
Series None | expand

Commit Message

zhenglifeng (A) Jan. 17, 2025, 10:14 a.m. UTC 
In policy initialization, policy->max and policy->cpuinfo.max_freq 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>
---
 drivers/cpufreq/cppc_cpufreq.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/cpufreq/cppc_cpufreq.c b/drivers/cpufreq/cppc_cpufreq.c
index bd8f75accfa0..7fa89b601d2a 100644
--- a/drivers/cpufreq/cppc_cpufreq.c
+++ b/drivers/cpufreq/cppc_cpufreq.c
@@ -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;