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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2020-10-05 13:12:02 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2020-10-05 13:12:02 +0200 |
| commit | fccd2f0e629b357437bebc015810f7f1957a4643 (patch) | |
| tree | 4d0cc002fb0e0d487e66d205f115737f37933b98 /drivers/base | |
| parent | fc7d17551f776fda243493ce59894c1eec2a339f (diff) | |
| parent | 15e5d5b45b2b7072214af519357a1c0af078c50b (diff) | |
| download | lwn-fccd2f0e629b357437bebc015810f7f1957a4643.tar.gz lwn-fccd2f0e629b357437bebc015810f7f1957a4643.zip | |
Merge back cpufreq material for 5.10.
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/arch_topology.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/base/arch_topology.c b/drivers/base/arch_topology.c index 75f72d684294..89cae168b076 100644 --- a/drivers/base/arch_topology.c +++ b/drivers/base/arch_topology.c @@ -21,18 +21,27 @@ #include <linux/sched.h> #include <linux/smp.h> -__weak bool arch_freq_counters_available(struct cpumask *cpus) +bool topology_scale_freq_invariant(void) +{ + return cpufreq_supports_freq_invariance() || + arch_freq_counters_available(cpu_online_mask); +} + +__weak bool arch_freq_counters_available(const 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, +void arch_set_freq_scale(const struct cpumask *cpus, unsigned long cur_freq, unsigned long max_freq) { unsigned long scale; int i; + if (WARN_ON_ONCE(!cur_freq || !max_freq)) + return; + /* * 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. |