On Exynos SoCs all cores share the same frequency setting, so changing
frequency of one core will affect rest of cores.
This patch modifies the exynos-cpufreq driver to inform cpufreq core
about this behavior and broadcast frequency change notifications for all
cores.
Signed-off-by: Tomasz Figa <t.figa@xxxxxxxxxxx>
Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
---
drivers/cpufreq/exynos-cpufreq.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/cpufreq/exynos-cpufreq.c b/drivers/cpufreq/exynos-cpufreq.c
index af2d81e..c0d54a8 100644
--- a/drivers/cpufreq/exynos-cpufreq.c
+++ b/drivers/cpufreq/exynos-cpufreq.c
@@ -100,7 +100,8 @@ static int exynos_target(struct cpufreq_policy *policy,
}
arm_volt = volt_table[index];
- cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
+ for_each_cpu(freqs.cpu, policy->cpus)
+ cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
/* When the new frequency is higher than current frequency */
if ((freqs.new > freqs.old) && !safe_arm_volt) {
@@ -115,7 +116,8 @@ static int exynos_target(struct cpufreq_policy *policy,
if (freqs.new != freqs.old)
exynos_info->set_freq(old_index, index);
- cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
+ for_each_cpu(freqs.cpu, policy->cpus)
+ cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
/* When the new frequency is lower than current frequency */
if ((freqs.new < freqs.old) ||
@@ -235,6 +237,7 @@ static int exynos_cpufreq_cpu_init(struct cpufreq_policy *policy)
cpumask_copy(policy->related_cpus, cpu_possible_mask);
cpumask_copy(policy->cpus, cpu_online_mask);
} else {
+ policy->shared_type = CPUFREQ_SHARED_TYPE_ANY;
cpumask_setall(policy->cpus);
}
--
1.8.0
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