diff options
| author | Ricardo Neri <ricardo.neri-calderon@linux.intel.com> | 2025-04-18 19:55:03 -0700 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2025-05-07 21:56:55 +0200 |
| commit | 6bceea7a1e076ef9d71b20d8dda2f7dc52bd34d2 (patch) | |
| tree | 34b9da0f1f4fe0d0bcf96ebcb77731fdee87b3f7 /include | |
| parent | cpufreq/sched: Move cpufreq-specific EAS checks to cpufreq (diff) | |
| download | linux-6bceea7a1e076ef9d71b20d8dda2f7dc52bd34d2.tar.gz linux-6bceea7a1e076ef9d71b20d8dda2f7dc52bd34d2.zip | |
arch_topology: Relocate cpu_scale to topology.[h|c]
arch_topology.c provides functionality to parse and scale CPU capacity.
It also provides a corresponding sysfs interface. Some architectures
parse and scale CPU capacity differently as per their own needs. On
Intel processors, for instance, it is responsibility of the Intel
P-state driver.
Relocate the implementation of that interface to a common location in
topology.c. Architectures can use the interface and populate it using
their own mechanisms.
An alternative approach would be to compile arch_topology.c even if
not needed only to get this interface. This approach would create
duplicated and conflicting functionality and data structures.
Signed-off-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
Tested-by: Christian Loehle <christian.loehle@arm.com>
Link: https://patch.msgid.link/20250419025504.9760-2-ricardo.neri-calderon@linux.intel.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/arch_topology.h | 8 | ||||
| -rw-r--r-- | include/linux/topology.h | 9 |
2 files changed, 9 insertions, 8 deletions
diff --git a/include/linux/arch_topology.h b/include/linux/arch_topology.h index 2222e8b03ff4..d72d6e5aa200 100644 --- a/include/linux/arch_topology.h +++ b/include/linux/arch_topology.h @@ -14,14 +14,6 @@ int topology_update_cpu_topology(void); struct device_node; bool topology_parse_cpu_capacity(struct device_node *cpu_node, int cpu); -DECLARE_PER_CPU(unsigned long, cpu_scale); - -static inline unsigned long topology_get_cpu_scale(int cpu) -{ - return per_cpu(cpu_scale, cpu); -} - -void topology_set_cpu_scale(unsigned int cpu, unsigned long capacity); DECLARE_PER_CPU(unsigned long, capacity_freq_ref); diff --git a/include/linux/topology.h b/include/linux/topology.h index 24e715f0f6d2..cd6b4bdc9cfd 100644 --- a/include/linux/topology.h +++ b/include/linux/topology.h @@ -332,4 +332,13 @@ sched_numa_hop_mask(unsigned int node, unsigned int hops) !IS_ERR_OR_NULL(mask); \ __hops++) +DECLARE_PER_CPU(unsigned long, cpu_scale); + +static inline unsigned long topology_get_cpu_scale(int cpu) +{ + return per_cpu(cpu_scale, cpu); +} + +void topology_set_cpu_scale(unsigned int cpu, unsigned long capacity); + #endif /* _LINUX_TOPOLOGY_H */ |