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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
40struct perf_cpu_map *perf_cpu_map__empty_new(int nr);
41
42struct perf_cpu_map *cpu_map__new_data(struct perf_record_cpu_map_data *data);
43size_t cpu_map__snprint(struct perf_cpu_map *map, char *buf, size_t size);
44size_t cpu_map__snprint_mask(struct perf_cpu_map *map, char *buf, size_t size);
45size_t cpu_map__fprintf(struct perf_cpu_map *map, FILE *fp);
46const struct perf_cpu_map *cpu_map__online(void); /* thread unsafe */
47
48int cpu__setup_cpunode_map(void);
49
50int cpu__max_node(void);
51struct perf_cpu cpu__max_cpu(void);
52struct perf_cpu cpu__max_present_cpu(void);
53
54/**
55 * cpu_map__is_dummy - Events associated with a pid, rather than a CPU, use a single dummy map with an entry of -1.
56 */
57static inline bool cpu_map__is_dummy(struct perf_cpu_map *cpus)
58{
59 return perf_cpu_map__nr(cpus) == 1 && perf_cpu_map__cpu(cpus, 0).cpu == -1;
60}
61
62/**
63 * cpu__get_node - Returns the numa node X as read from
64 * /sys/devices/system/node/nodeX for the given CPU.
65 */
66int cpu__get_node(struct perf_cpu cpu);
67/**
68 * cpu__get_socket_id - Returns the socket number as read from
69 * /sys/devices/system/cpu/cpuX/topology/physical_package_id for the given CPU.
70 */
71int cpu__get_socket_id(struct perf_cpu cpu);
72/**
73 * cpu__get_die_id - Returns the die id as read from
74 * /sys/devices/system/cpu/cpuX/topology/die_id for the given CPU.
75 */
76int cpu__get_die_id(struct perf_cpu cpu);
77/**
78 * cpu__get_core_id - Returns the core id as read from
79 * /sys/devices/system/cpu/cpuX/topology/core_id for the given CPU.
80 */
81int cpu__get_core_id(struct perf_cpu cpu);
82
83/**
84 * cpu_aggr_map__empty_new - Create a cpu_aggr_map of size nr with every entry
85 * being empty.
86 */
87struct cpu_aggr_map *cpu_aggr_map__empty_new(int nr);
88
89typedef struct aggr_cpu_id (*aggr_cpu_id_get_t)(struct perf_cpu cpu, void *data);
90
91/**
92 * cpu_aggr_map__new - Create a cpu_aggr_map with an aggr_cpu_id for each cpu in
93 * cpus. The aggr_cpu_id is created with 'get_id' that may have a data value
94 * passed to it. The cpu_aggr_map is sorted with duplicate values removed.
95 */
96struct cpu_aggr_map *cpu_aggr_map__new(const struct perf_cpu_map *cpus,
97 aggr_cpu_id_get_t get_id,
98 void *data);
99
100bool aggr_cpu_id__equal(const struct aggr_cpu_id *a, const struct aggr_cpu_id *b);
101bool aggr_cpu_id__is_empty(const struct aggr_cpu_id *a);
102struct aggr_cpu_id aggr_cpu_id__empty(void);
103
104
105/**
106 * aggr_cpu_id__socket - Create an aggr_cpu_id with the socket populated with
107 * the socket for cpu. The function signature is compatible with
108 * aggr_cpu_id_get_t.
109 */
110struct aggr_cpu_id aggr_cpu_id__socket(struct perf_cpu cpu, void *data);
111/**
112 * aggr_cpu_id__die - Create an aggr_cpu_id with the die and socket populated
113 * with the die and socket for cpu. The function signature is compatible with
114 * aggr_cpu_id_get_t.
115 */
116struct aggr_cpu_id aggr_cpu_id__die(struct perf_cpu cpu, void *data);
117/**
118 * aggr_cpu_id__core - Create an aggr_cpu_id with the core, die and socket
119 * populated with the core, die and socket for cpu. The function signature is
120 * compatible with aggr_cpu_id_get_t.
121 */
122struct aggr_cpu_id aggr_cpu_id__core(struct perf_cpu cpu, void *data);
123/**
124 * aggr_cpu_id__core - Create an aggr_cpu_id with the cpu, core, die and socket
125 * populated with the cpu, core, die and socket for cpu. The function signature
126 * is compatible with aggr_cpu_id_get_t.
127 */
128struct aggr_cpu_id aggr_cpu_id__cpu(struct perf_cpu cpu, void *data);
129/**
130 * aggr_cpu_id__node - Create an aggr_cpu_id with the numa node populated for
131 * cpu. The function signature is compatible with aggr_cpu_id_get_t.
132 */
133struct aggr_cpu_id aggr_cpu_id__node(struct perf_cpu cpu, void *data);
134
135#endif /* __PERF_CPUMAP_H */