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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __PERF_CPUMAP_H
3#define __PERF_CPUMAP_H
4
5#include <stdbool.h>
6#include <stdio.h>
7#include <internal/cpumap.h>
8#include <perf/cpumap.h>
9
10/** Identify where counts are aggregated, -1 implies not to aggregate. */
11struct aggr_cpu_id {
12 /** A value in the range 0 to number of threads. */
13 int thread;
14 /** The numa node X as read from /sys/devices/system/node/nodeX. */
15 int node;
16 /**
17 * The socket number as read from
18 * /sys/devices/system/cpu/cpuX/topology/physical_package_id.
19 */
20 int socket;
21 /** The die id as read from /sys/devices/system/cpu/cpuX/topology/die_id. */
22 int die;
23 /** The core id as read from /sys/devices/system/cpu/cpuX/topology/core_id. */
24 int core;
25 /** CPU aggregation, note there is one CPU for each SMT thread. */
26 struct perf_cpu cpu;
27};
28
29/** A collection of aggr_cpu_id values, the "built" version is sorted and uniqued. */
30struct cpu_aggr_map {
31 refcount_t refcnt;
32 /** Number of valid entries. */
33 int nr;
34 /** The entries. */
35 struct aggr_cpu_id map[];
36};
37
38struct perf_record_cpu_map_data;
39
40bool perf_record_cpu_map_data__test_bit(int i, const struct perf_record_cpu_map_data *data);
41
42struct perf_cpu_map *perf_cpu_map__empty_new(int nr);
43
44struct perf_cpu_map *cpu_map__new_data(const struct perf_record_cpu_map_data *data);
45size_t cpu_map__snprint(struct perf_cpu_map *map, char *buf, size_t size);
46size_t cpu_map__snprint_mask(struct perf_cpu_map *map, char *buf, size_t size);
47size_t cpu_map__fprintf(struct perf_cpu_map *map, FILE *fp);
48const struct perf_cpu_map *cpu_map__online(void); /* thread unsafe */
49
50int cpu__setup_cpunode_map(void);
51
52int cpu__max_node(void);
53struct perf_cpu cpu__max_cpu(void);
54struct perf_cpu cpu__max_present_cpu(void);
55
56/**
57 * cpu_map__is_dummy - Events associated with a pid, rather than a CPU, use a single dummy map with an entry of -1.
58 */
59static inline bool cpu_map__is_dummy(struct perf_cpu_map *cpus)
60{
61 return perf_cpu_map__nr(cpus) == 1 && perf_cpu_map__cpu(cpus, 0).cpu == -1;
62}
63
64/**
65 * cpu__get_node - Returns the numa node X as read from
66 * /sys/devices/system/node/nodeX for the given CPU.
67 */
68int cpu__get_node(struct perf_cpu cpu);
69/**
70 * cpu__get_socket_id - Returns the socket number as read from
71 * /sys/devices/system/cpu/cpuX/topology/physical_package_id for the given CPU.
72 */
73int cpu__get_socket_id(struct perf_cpu cpu);
74/**
75 * cpu__get_die_id - Returns the die id as read from
76 * /sys/devices/system/cpu/cpuX/topology/die_id for the given CPU.
77 */
78int cpu__get_die_id(struct perf_cpu cpu);
79/**
80 * cpu__get_core_id - Returns the core id as read from
81 * /sys/devices/system/cpu/cpuX/topology/core_id for the given CPU.
82 */
83int cpu__get_core_id(struct perf_cpu cpu);
84
85/**
86 * cpu_aggr_map__empty_new - Create a cpu_aggr_map of size nr with every entry
87 * being empty.
88 */
89struct cpu_aggr_map *cpu_aggr_map__empty_new(int nr);
90
91typedef struct aggr_cpu_id (*aggr_cpu_id_get_t)(struct perf_cpu cpu, void *data);
92
93/**
94 * cpu_aggr_map__new - Create a cpu_aggr_map with an aggr_cpu_id for each cpu in
95 * cpus. The aggr_cpu_id is created with 'get_id' that may have a data value
96 * passed to it. The cpu_aggr_map is sorted with duplicate values removed.
97 */
98struct cpu_aggr_map *cpu_aggr_map__new(const struct perf_cpu_map *cpus,
99 aggr_cpu_id_get_t get_id,
100 void *data);
101
102bool aggr_cpu_id__equal(const struct aggr_cpu_id *a, const struct aggr_cpu_id *b);
103bool aggr_cpu_id__is_empty(const struct aggr_cpu_id *a);
104struct aggr_cpu_id aggr_cpu_id__empty(void);
105
106
107/**
108 * aggr_cpu_id__socket - Create an aggr_cpu_id with the socket populated with
109 * the socket for cpu. The function signature is compatible with
110 * aggr_cpu_id_get_t.
111 */
112struct aggr_cpu_id aggr_cpu_id__socket(struct perf_cpu cpu, void *data);
113/**
114 * aggr_cpu_id__die - Create an aggr_cpu_id with the die and socket populated
115 * with the die and socket for cpu. The function signature is compatible with
116 * aggr_cpu_id_get_t.
117 */
118struct aggr_cpu_id aggr_cpu_id__die(struct perf_cpu cpu, void *data);
119/**
120 * aggr_cpu_id__core - Create an aggr_cpu_id with the core, die and socket
121 * populated with the core, die and socket for cpu. The function signature is
122 * compatible with aggr_cpu_id_get_t.
123 */
124struct aggr_cpu_id aggr_cpu_id__core(struct perf_cpu cpu, void *data);
125/**
126 * aggr_cpu_id__core - Create an aggr_cpu_id with the cpu, core, die and socket
127 * populated with the cpu, core, die and socket for cpu. The function signature
128 * is compatible with aggr_cpu_id_get_t.
129 */
130struct aggr_cpu_id aggr_cpu_id__cpu(struct perf_cpu cpu, void *data);
131/**
132 * aggr_cpu_id__node - Create an aggr_cpu_id with the numa node populated for
133 * cpu. The function signature is compatible with aggr_cpu_id_get_t.
134 */
135struct aggr_cpu_id aggr_cpu_id__node(struct perf_cpu cpu, void *data);
136
137#endif /* __PERF_CPUMAP_H */