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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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f13de6609a
Build node cpu masks for mmap data buffers. Apply node cpu masks to tool thread every time it references data buffers cross node or cross cpu. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/b25e4ebc-078d-2c7b-216c-f0bed108d073@linux.intel.com [ Use cpu-set-sched.h to get the CPU_{EQUAL,OR}() fallbacks for older systems ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
79 lines
2.1 KiB
C
79 lines
2.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __PERF_CPUMAP_H
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#define __PERF_CPUMAP_H
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#include <stdio.h>
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#include <stdbool.h>
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#include <linux/refcount.h>
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#include "perf.h"
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#include "util/debug.h"
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struct cpu_map {
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refcount_t refcnt;
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int nr;
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int map[];
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};
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struct cpu_map *cpu_map__new(const char *cpu_list);
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struct cpu_map *cpu_map__empty_new(int nr);
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struct cpu_map *cpu_map__dummy_new(void);
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struct cpu_map *cpu_map__new_data(struct cpu_map_data *data);
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struct cpu_map *cpu_map__read(FILE *file);
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size_t cpu_map__snprint(struct cpu_map *map, char *buf, size_t size);
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size_t cpu_map__snprint_mask(struct cpu_map *map, char *buf, size_t size);
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size_t cpu_map__fprintf(struct cpu_map *map, FILE *fp);
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int cpu_map__get_socket_id(int cpu);
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int cpu_map__get_socket(struct cpu_map *map, int idx, void *data);
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int cpu_map__get_core_id(int cpu);
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int cpu_map__get_core(struct cpu_map *map, int idx, void *data);
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int cpu_map__build_socket_map(struct cpu_map *cpus, struct cpu_map **sockp);
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int cpu_map__build_core_map(struct cpu_map *cpus, struct cpu_map **corep);
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const struct cpu_map *cpu_map__online(void); /* thread unsafe */
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struct cpu_map *cpu_map__get(struct cpu_map *map);
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void cpu_map__put(struct cpu_map *map);
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static inline int cpu_map__socket(struct cpu_map *sock, int s)
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{
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if (!sock || s > sock->nr || s < 0)
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return 0;
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return sock->map[s];
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}
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static inline int cpu_map__id_to_socket(int id)
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{
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return id >> 16;
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}
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static inline int cpu_map__id_to_cpu(int id)
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{
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return id & 0xffff;
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}
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static inline int cpu_map__nr(const struct cpu_map *map)
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{
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return map ? map->nr : 1;
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}
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static inline bool cpu_map__empty(const struct cpu_map *map)
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{
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return map ? map->map[0] == -1 : true;
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}
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int cpu__setup_cpunode_map(void);
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int cpu__max_node(void);
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int cpu__max_cpu(void);
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int cpu__max_present_cpu(void);
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int cpu__get_node(int cpu);
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int cpu_map__build_map(struct cpu_map *cpus, struct cpu_map **res,
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int (*f)(struct cpu_map *map, int cpu, void *data),
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void *data);
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int cpu_map__cpu(struct cpu_map *cpus, int idx);
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bool cpu_map__has(struct cpu_map *cpus, int cpu);
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int cpu_map__idx(struct cpu_map *cpus, int cpu);
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#endif /* __PERF_CPUMAP_H */
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