mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-02 23:46:41 +07:00
9a6c582d57
In some cases it's necessry to figure out the map-local index of a given Linux logical CPU ID. Add a new helper, cpu_map__idx, to acquire this. As the logic is largely the same as the existing cpu_map__has, this is rewritten in terms of the new helper. At the same time, add the inverse operation, cpu_map__cpu, which yields the logical CPU id for a map-local index. While this can be performed manually, wrapping this in a helper can make code more legible. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: He Kuang <hekuang@huawei.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1468577293-19667-3-git-send-email-mark.rutland@arm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
75 lines
1.9 KiB
C
75 lines
1.9 KiB
C
#ifndef __PERF_CPUMAP_H
|
|
#define __PERF_CPUMAP_H
|
|
|
|
#include <stdio.h>
|
|
#include <stdbool.h>
|
|
#include <linux/atomic.h>
|
|
|
|
#include "perf.h"
|
|
#include "util/debug.h"
|
|
|
|
struct cpu_map {
|
|
atomic_t refcnt;
|
|
int nr;
|
|
int map[];
|
|
};
|
|
|
|
struct cpu_map *cpu_map__new(const char *cpu_list);
|
|
struct cpu_map *cpu_map__empty_new(int nr);
|
|
struct cpu_map *cpu_map__dummy_new(void);
|
|
struct cpu_map *cpu_map__new_data(struct cpu_map_data *data);
|
|
struct cpu_map *cpu_map__read(FILE *file);
|
|
size_t cpu_map__snprint(struct cpu_map *map, char *buf, size_t size);
|
|
size_t cpu_map__fprintf(struct cpu_map *map, FILE *fp);
|
|
int cpu_map__get_socket_id(int cpu);
|
|
int cpu_map__get_socket(struct cpu_map *map, int idx, void *data);
|
|
int cpu_map__get_core_id(int cpu);
|
|
int cpu_map__get_core(struct cpu_map *map, int idx, void *data);
|
|
int cpu_map__build_socket_map(struct cpu_map *cpus, struct cpu_map **sockp);
|
|
int cpu_map__build_core_map(struct cpu_map *cpus, struct cpu_map **corep);
|
|
|
|
struct cpu_map *cpu_map__get(struct cpu_map *map);
|
|
void cpu_map__put(struct cpu_map *map);
|
|
|
|
static inline int cpu_map__socket(struct cpu_map *sock, int s)
|
|
{
|
|
if (!sock || s > sock->nr || s < 0)
|
|
return 0;
|
|
return sock->map[s];
|
|
}
|
|
|
|
static inline int cpu_map__id_to_socket(int id)
|
|
{
|
|
return id >> 16;
|
|
}
|
|
|
|
static inline int cpu_map__id_to_cpu(int id)
|
|
{
|
|
return id & 0xffff;
|
|
}
|
|
|
|
static inline int cpu_map__nr(const struct cpu_map *map)
|
|
{
|
|
return map ? map->nr : 1;
|
|
}
|
|
|
|
static inline bool cpu_map__empty(const struct cpu_map *map)
|
|
{
|
|
return map ? map->map[0] == -1 : true;
|
|
}
|
|
|
|
int cpu__setup_cpunode_map(void);
|
|
|
|
int cpu__max_node(void);
|
|
int cpu__max_cpu(void);
|
|
int cpu__get_node(int cpu);
|
|
|
|
int cpu_map__build_map(struct cpu_map *cpus, struct cpu_map **res,
|
|
int (*f)(struct cpu_map *map, int cpu, void *data),
|
|
void *data);
|
|
|
|
int cpu_map__cpu(struct cpu_map *cpus, int idx);
|
|
bool cpu_map__has(struct cpu_map *cpus, int cpu);
|
|
int cpu_map__idx(struct cpu_map *cpus, int cpu);
|
|
#endif /* __PERF_CPUMAP_H */
|