7780c25bae
This patch figures out the max number of cpus and nodes that are on the system and creates a map of cpu to node. This allows us to provide a cpu and quickly get the node associated with it. It was mostly copied from builtin-kmem.c and tweaked slightly to use less memory (use possible cpus instead of max). It also calculates the max number of nodes. Signed-off-by: Don Zickus <dzickus@redhat.com> Reviewed-by: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/1396896924-129847-2-git-send-email-dzickus@redhat.com [ Removing out label code in init_cpunode_map ] [ Adding check for snprintf error ] [ Removing unneeded returns ] Signed-off-by: Jiri Olsa <jolsa@redhat.com>
84 lines
1.7 KiB
C
84 lines
1.7 KiB
C
#ifndef __PERF_CPUMAP_H
|
|
#define __PERF_CPUMAP_H
|
|
|
|
#include <stdio.h>
|
|
#include <stdbool.h>
|
|
|
|
#include "perf.h"
|
|
#include "util/debug.h"
|
|
|
|
struct cpu_map {
|
|
int nr;
|
|
int map[];
|
|
};
|
|
|
|
struct cpu_map *cpu_map__new(const char *cpu_list);
|
|
struct cpu_map *cpu_map__dummy_new(void);
|
|
void cpu_map__delete(struct cpu_map *map);
|
|
struct cpu_map *cpu_map__read(FILE *file);
|
|
size_t cpu_map__fprintf(struct cpu_map *map, FILE *fp);
|
|
int cpu_map__get_socket(struct cpu_map *map, int idx);
|
|
int cpu_map__get_core(struct cpu_map *map, int idx);
|
|
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);
|
|
|
|
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 max_cpu_num;
|
|
int max_node_num;
|
|
int *cpunode_map;
|
|
|
|
int cpu__setup_cpunode_map(void);
|
|
|
|
static inline int cpu__max_node(void)
|
|
{
|
|
if (unlikely(!max_node_num))
|
|
pr_debug("cpu_map not initialized\n");
|
|
|
|
return max_node_num;
|
|
}
|
|
|
|
static inline int cpu__max_cpu(void)
|
|
{
|
|
if (unlikely(!max_cpu_num))
|
|
pr_debug("cpu_map not initialized\n");
|
|
|
|
return max_cpu_num;
|
|
}
|
|
|
|
static inline int cpu__get_node(int cpu)
|
|
{
|
|
if (unlikely(cpunode_map == NULL)) {
|
|
pr_debug("cpu_map not initialized\n");
|
|
return -1;
|
|
}
|
|
|
|
return cpunode_map[cpu];
|
|
}
|
|
|
|
#endif /* __PERF_CPUMAP_H */
|