Contributors: 20
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Mark Brown |
80 |
18.26% |
1 |
2.63% |
| Juri Lelli |
77 |
17.58% |
4 |
10.53% |
| Dietmar Eggemann |
70 |
15.98% |
3 |
7.89% |
| Viresh Kumar |
53 |
12.10% |
4 |
10.53% |
| Jonathan Cameron |
30 |
6.85% |
1 |
2.63% |
| Ionela Voinescu |
27 |
6.16% |
3 |
7.89% |
| Yicong Yang |
26 |
5.94% |
2 |
5.26% |
| Atish Patra |
15 |
3.42% |
2 |
5.26% |
| Vincent Guittot |
10 |
2.28% |
3 |
7.89% |
| Yunhui Cui |
10 |
2.28% |
1 |
2.63% |
| Sudeep Holla |
10 |
2.28% |
2 |
5.26% |
| Morten Rasmussen |
6 |
1.37% |
1 |
2.63% |
| Valentin Schneider |
6 |
1.37% |
3 |
7.89% |
| Thara Gopinath |
5 |
1.14% |
1 |
2.63% |
| Lukasz Luba |
4 |
0.91% |
1 |
2.63% |
| Jeremy Linton |
3 |
0.68% |
2 |
5.26% |
| David Dai |
2 |
0.46% |
1 |
2.63% |
| Ben Dooks |
2 |
0.46% |
1 |
2.63% |
| Greg Kroah-Hartman |
1 |
0.23% |
1 |
2.63% |
| Bartosz Golaszewski |
1 |
0.23% |
1 |
2.63% |
| Total |
438 |
|
38 |
|
/* SPDX-License-Identifier: GPL-2.0 */
/*
* include/linux/arch_topology.h - arch specific cpu topology information
*/
#ifndef _LINUX_ARCH_TOPOLOGY_H_
#define _LINUX_ARCH_TOPOLOGY_H_
#include <linux/types.h>
#include <linux/percpu.h>
void topology_normalize_cpu_scale(void);
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, capacity_freq_ref);
static inline unsigned long topology_get_freq_ref(int cpu)
{
return per_cpu(capacity_freq_ref, cpu);
}
DECLARE_PER_CPU(unsigned long, arch_freq_scale);
static inline unsigned long topology_get_freq_scale(int cpu)
{
return per_cpu(arch_freq_scale, cpu);
}
void topology_set_freq_scale(const struct cpumask *cpus, unsigned long cur_freq,
unsigned long max_freq);
bool topology_scale_freq_invariant(void);
enum scale_freq_source {
SCALE_FREQ_SOURCE_CPUFREQ = 0,
SCALE_FREQ_SOURCE_ARCH,
SCALE_FREQ_SOURCE_CPPC,
SCALE_FREQ_SOURCE_VIRT,
};
struct scale_freq_data {
enum scale_freq_source source;
void (*set_freq_scale)(void);
};
void topology_scale_freq_tick(void);
void topology_set_scale_freq_source(struct scale_freq_data *data, const struct cpumask *cpus);
void topology_clear_scale_freq_source(enum scale_freq_source source, const struct cpumask *cpus);
DECLARE_PER_CPU(unsigned long, hw_pressure);
static inline unsigned long topology_get_hw_pressure(int cpu)
{
return per_cpu(hw_pressure, cpu);
}
void topology_update_hw_pressure(const struct cpumask *cpus,
unsigned long capped_freq);
struct cpu_topology {
int thread_id;
int core_id;
int cluster_id;
int package_id;
cpumask_t thread_sibling;
cpumask_t core_sibling;
cpumask_t cluster_sibling;
cpumask_t llc_sibling;
};
#ifdef CONFIG_GENERIC_ARCH_TOPOLOGY
extern struct cpu_topology cpu_topology[NR_CPUS];
#define topology_physical_package_id(cpu) (cpu_topology[cpu].package_id)
#define topology_cluster_id(cpu) (cpu_topology[cpu].cluster_id)
#define topology_core_id(cpu) (cpu_topology[cpu].core_id)
#define topology_core_cpumask(cpu) (&cpu_topology[cpu].core_sibling)
#define topology_sibling_cpumask(cpu) (&cpu_topology[cpu].thread_sibling)
#define topology_cluster_cpumask(cpu) (&cpu_topology[cpu].cluster_sibling)
#define topology_llc_cpumask(cpu) (&cpu_topology[cpu].llc_sibling)
#ifndef arch_cpu_is_threaded
#define arch_cpu_is_threaded() (0)
#endif
void init_cpu_topology(void);
void store_cpu_topology(unsigned int cpuid);
const struct cpumask *cpu_coregroup_mask(int cpu);
const struct cpumask *cpu_clustergroup_mask(int cpu);
void update_siblings_masks(unsigned int cpu);
void remove_cpu_topology(unsigned int cpuid);
void reset_cpu_topology(void);
int parse_acpi_topology(void);
void freq_inv_set_max_ratio(int cpu, u64 max_rate);
/*
* Architectures like ARM64 don't have reliable architectural way to get SMT
* information and depend on the firmware (ACPI/OF) report. Non-SMT core won't
* initialize thread_id so we can use this to detect the SMT implementation.
*/
static inline bool topology_core_has_smt(int cpu)
{
return cpu_topology[cpu].thread_id != -1;
}
#else
static inline bool topology_core_has_smt(int cpu) { return false; }
#endif /* CONFIG_GENERIC_ARCH_TOPOLOGY */
#endif /* _LINUX_ARCH_TOPOLOGY_H_ */