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Diffstat (limited to 'arch/arm64/kernel/topology.c')
-rw-r--r--arch/arm64/kernel/topology.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/arm64/kernel/topology.c b/arch/arm64/kernel/topology.c
index b8026ec684ba..c8308befdb1e 100644
--- a/arch/arm64/kernel/topology.c
+++ b/arch/arm64/kernel/topology.c
@@ -223,6 +223,7 @@ static DEFINE_STATIC_KEY_FALSE(amu_fie_key);
static int __init init_amu_fie(void)
{
+ bool invariance_status = topology_scale_freq_invariant();
cpumask_var_t valid_cpus;
bool have_policy = false;
int ret = 0;
@@ -269,6 +270,15 @@ static int __init init_amu_fie(void)
if (!topology_scale_freq_invariant())
static_branch_disable(&amu_fie_key);
+ /*
+ * Task scheduler behavior depends on frequency invariance support,
+ * either cpufreq or counter driven. If the support status changes as
+ * a result of counter initialisation and use, retrigger the build of
+ * scheduling domains to ensure the information is propagated properly.
+ */
+ if (invariance_status != topology_scale_freq_invariant())
+ rebuild_sched_domains_energy();
+
free_valid_mask:
free_cpumask_var(valid_cpus);