diff options
Diffstat (limited to 'drivers/base/arch_topology.c')
| -rw-r--r-- | drivers/base/arch_topology.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/base/arch_topology.c b/drivers/base/arch_topology.c index e5d691cf824c..4d0a0038b476 100644 --- a/drivers/base/arch_topology.c +++ b/drivers/base/arch_topology.c @@ -21,6 +21,10 @@ #include <linux/sched.h> #include <linux/smp.h> +__weak bool arch_freq_counters_available(struct cpumask *cpus) +{ + return false; +} DEFINE_PER_CPU(unsigned long, freq_scale) = SCHED_CAPACITY_SCALE; void arch_set_freq_scale(struct cpumask *cpus, unsigned long cur_freq, @@ -29,6 +33,14 @@ void arch_set_freq_scale(struct cpumask *cpus, unsigned long cur_freq, unsigned long scale; int i; + /* + * If the use of counters for FIE is enabled, just return as we don't + * want to update the scale factor with information from CPUFREQ. + * Instead the scale factor will be updated from arch_scale_freq_tick. + */ + if (arch_freq_counters_available(cpus)) + return; + scale = (cur_freq << SCHED_CAPACITY_SHIFT) / max_freq; for_each_cpu(i, cpus) |