1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __PERF_CPUMAP_H
3 #define __PERF_CPUMAP_H
7 #include <perf/cpumap.h>
8 #include <linux/refcount.h>
10 /** Identify where counts are aggregated, -1 implies not to aggregate. */
12 /** A value in the range 0 to number of threads. */
14 /** The numa node X as read from /sys/devices/system/node/nodeX. */
17 * The socket number as read from
18 * /sys/devices/system/cpu/cpuX/topology/physical_package_id.
21 /** The die id as read from /sys/devices/system/cpu/cpuX/topology/die_id. */
23 /** The core id as read from /sys/devices/system/cpu/cpuX/topology/core_id. */
25 /** CPU aggregation, note there is one CPU for each SMT thread. */
29 /** A collection of aggr_cpu_id values, the "built" version is sorted and uniqued. */
32 /** Number of valid entries. */
35 struct aggr_cpu_id map[];
38 #define cpu_aggr_map__for_each_idx(idx, aggr_map) \
39 for ((idx) = 0; (idx) < aggr_map->nr; (idx)++)
41 struct perf_record_cpu_map_data;
43 bool perf_record_cpu_map_data__test_bit(int i, const struct perf_record_cpu_map_data *data);
45 struct perf_cpu_map *perf_cpu_map__empty_new(int nr);
47 struct perf_cpu_map *cpu_map__new_data(const struct perf_record_cpu_map_data *data);
48 size_t cpu_map__snprint(struct perf_cpu_map *map, char *buf, size_t size);
49 size_t cpu_map__snprint_mask(struct perf_cpu_map *map, char *buf, size_t size);
50 size_t cpu_map__fprintf(struct perf_cpu_map *map, FILE *fp);
51 const struct perf_cpu_map *cpu_map__online(void); /* thread unsafe */
53 int cpu__setup_cpunode_map(void);
55 int cpu__max_node(void);
56 struct perf_cpu cpu__max_cpu(void);
57 struct perf_cpu cpu__max_present_cpu(void);
60 * cpu_map__is_dummy - Events associated with a pid, rather than a CPU, use a single dummy map with an entry of -1.
62 static inline bool cpu_map__is_dummy(struct perf_cpu_map *cpus)
64 return perf_cpu_map__nr(cpus) == 1 && perf_cpu_map__cpu(cpus, 0).cpu == -1;
68 * cpu__get_node - Returns the numa node X as read from
69 * /sys/devices/system/node/nodeX for the given CPU.
71 int cpu__get_node(struct perf_cpu cpu);
73 * cpu__get_socket_id - Returns the socket number as read from
74 * /sys/devices/system/cpu/cpuX/topology/physical_package_id for the given CPU.
76 int cpu__get_socket_id(struct perf_cpu cpu);
78 * cpu__get_die_id - Returns the die id as read from
79 * /sys/devices/system/cpu/cpuX/topology/die_id for the given CPU.
81 int cpu__get_die_id(struct perf_cpu cpu);
83 * cpu__get_core_id - Returns the core id as read from
84 * /sys/devices/system/cpu/cpuX/topology/core_id for the given CPU.
86 int cpu__get_core_id(struct perf_cpu cpu);
89 * cpu_aggr_map__empty_new - Create a cpu_aggr_map of size nr with every entry
92 struct cpu_aggr_map *cpu_aggr_map__empty_new(int nr);
94 typedef struct aggr_cpu_id (*aggr_cpu_id_get_t)(struct perf_cpu cpu, void *data);
97 * cpu_aggr_map__new - Create a cpu_aggr_map with an aggr_cpu_id for each cpu in
98 * cpus. The aggr_cpu_id is created with 'get_id' that may have a data value
99 * passed to it. The cpu_aggr_map is sorted with duplicate values removed.
101 struct cpu_aggr_map *cpu_aggr_map__new(const struct perf_cpu_map *cpus,
102 aggr_cpu_id_get_t get_id,
103 void *data, bool needs_sort);
105 bool aggr_cpu_id__equal(const struct aggr_cpu_id *a, const struct aggr_cpu_id *b);
106 bool aggr_cpu_id__is_empty(const struct aggr_cpu_id *a);
107 struct aggr_cpu_id aggr_cpu_id__empty(void);
111 * aggr_cpu_id__socket - Create an aggr_cpu_id with the socket populated with
112 * the socket for cpu. The function signature is compatible with
115 struct aggr_cpu_id aggr_cpu_id__socket(struct perf_cpu cpu, void *data);
117 * aggr_cpu_id__die - Create an aggr_cpu_id with the die and socket populated
118 * with the die and socket for cpu. The function signature is compatible with
121 struct aggr_cpu_id aggr_cpu_id__die(struct perf_cpu cpu, void *data);
123 * aggr_cpu_id__core - Create an aggr_cpu_id with the core, die and socket
124 * populated with the core, die and socket for cpu. The function signature is
125 * compatible with aggr_cpu_id_get_t.
127 struct aggr_cpu_id aggr_cpu_id__core(struct perf_cpu cpu, void *data);
129 * aggr_cpu_id__core - Create an aggr_cpu_id with the cpu, core, die and socket
130 * populated with the cpu, core, die and socket for cpu. The function signature
131 * is compatible with aggr_cpu_id_get_t.
133 struct aggr_cpu_id aggr_cpu_id__cpu(struct perf_cpu cpu, void *data);
135 * aggr_cpu_id__node - Create an aggr_cpu_id with the numa node populated for
136 * cpu. The function signature is compatible with aggr_cpu_id_get_t.
138 struct aggr_cpu_id aggr_cpu_id__node(struct perf_cpu cpu, void *data);
140 * aggr_cpu_id__global - Create an aggr_cpu_id for global aggregation.
141 * The function signature is compatible with aggr_cpu_id_get_t.
143 struct aggr_cpu_id aggr_cpu_id__global(struct perf_cpu cpu, void *data);
144 #endif /* __PERF_CPUMAP_H */