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 <perf/cpumap.h>
8 #include <linux/refcount.h>
9
10 /** Identify where counts are aggregated, -1 implies not to aggregate. */
11 struct aggr_cpu_id {
12 /** A value in the range 0 to number of threads. */
13 int thread_idx;
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 cache level as read from /sys/devices/system/cpu/cpuX/cache/indexY/level */
24 int cache_lvl;
25 /**
26 * The cache instance ID, which is the first CPU in the
27 * /sys/devices/system/cpu/cpuX/cache/indexY/shared_cpu_list
28 */
29 int cache;
30 /** The core id as read from /sys/devices/system/cpu/cpuX/topology/core_id. */
31 int core;
32 /** CPU aggregation, note there is one CPU for each SMT thread. */
33 struct perf_cpu cpu;
34 };
35
36 /** A collection of aggr_cpu_id values, the "built" version is sorted and uniqued. */
37 struct cpu_aggr_map {
38 refcount_t refcnt;
39 /** Number of valid entries. */
40 int nr;
41 /** The entries. */
42 struct aggr_cpu_id map[];
43 };
44
45 #define cpu_aggr_map__for_each_idx(idx, aggr_map) \
46 for ((idx) = 0; (idx) < aggr_map->nr; (idx)++)
47
48 struct perf_record_cpu_map_data;
49
50 bool perf_record_cpu_map_data__test_bit(int i, const struct perf_record_cpu_map_data *data);
51
52 struct perf_cpu_map *perf_cpu_map__empty_new(int nr);
53
54 struct perf_cpu_map *cpu_map__new_data(const struct perf_record_cpu_map_data *data);
55 size_t cpu_map__snprint(struct perf_cpu_map *map, char *buf, size_t size);
56 size_t cpu_map__snprint_mask(struct perf_cpu_map *map, char *buf, size_t size);
57 size_t cpu_map__fprintf(struct perf_cpu_map *map, FILE *fp);
58 struct perf_cpu_map *cpu_map__online(void); /* thread unsafe */
59
60 int cpu__setup_cpunode_map(void);
61
62 int cpu__max_node(void);
63 struct perf_cpu cpu__max_cpu(void);
64 struct perf_cpu cpu__max_present_cpu(void);
65
66 /**
67 * cpu_map__is_dummy - Events associated with a pid, rather than a CPU, use a single dummy map with an entry of -1.
68 */
cpu_map__is_dummy(const struct perf_cpu_map * cpus)69 static inline bool cpu_map__is_dummy(const struct perf_cpu_map *cpus)
70 {
71 return perf_cpu_map__nr(cpus) == 1 && perf_cpu_map__cpu(cpus, 0).cpu == -1;
72 }
73
74 /**
75 * cpu__get_node - Returns the numa node X as read from
76 * /sys/devices/system/node/nodeX for the given CPU.
77 */
78 int cpu__get_node(struct perf_cpu cpu);
79 /**
80 * cpu__get_socket_id - Returns the socket number as read from
81 * /sys/devices/system/cpu/cpuX/topology/physical_package_id for the given CPU.
82 */
83 int cpu__get_socket_id(struct perf_cpu cpu);
84 /**
85 * cpu__get_die_id - Returns the die id as read from
86 * /sys/devices/system/cpu/cpuX/topology/die_id for the given CPU.
87 */
88 int cpu__get_die_id(struct perf_cpu cpu);
89 /**
90 * cpu__get_core_id - Returns the core id as read from
91 * /sys/devices/system/cpu/cpuX/topology/core_id for the given CPU.
92 */
93 int cpu__get_core_id(struct perf_cpu cpu);
94
95 /**
96 * cpu_aggr_map__empty_new - Create a cpu_aggr_map of size nr with every entry
97 * being empty.
98 */
99 struct cpu_aggr_map *cpu_aggr_map__empty_new(int nr);
100
101 typedef struct aggr_cpu_id (*aggr_cpu_id_get_t)(struct perf_cpu cpu, void *data);
102
103 /**
104 * cpu_aggr_map__new - Create a cpu_aggr_map with an aggr_cpu_id for each cpu in
105 * cpus. The aggr_cpu_id is created with 'get_id' that may have a data value
106 * passed to it. The cpu_aggr_map is sorted with duplicate values removed.
107 */
108 struct cpu_aggr_map *cpu_aggr_map__new(const struct perf_cpu_map *cpus,
109 aggr_cpu_id_get_t get_id,
110 void *data, bool needs_sort);
111
112 bool aggr_cpu_id__equal(const struct aggr_cpu_id *a, const struct aggr_cpu_id *b);
113 bool aggr_cpu_id__is_empty(const struct aggr_cpu_id *a);
114 struct aggr_cpu_id aggr_cpu_id__empty(void);
115
116
117 /**
118 * aggr_cpu_id__socket - Create an aggr_cpu_id with the socket populated with
119 * the socket for cpu. The function signature is compatible with
120 * aggr_cpu_id_get_t.
121 */
122 struct aggr_cpu_id aggr_cpu_id__socket(struct perf_cpu cpu, void *data);
123 /**
124 * aggr_cpu_id__die - Create an aggr_cpu_id with the die and socket populated
125 * with the die and socket for cpu. The function signature is compatible with
126 * aggr_cpu_id_get_t.
127 */
128 struct aggr_cpu_id aggr_cpu_id__die(struct perf_cpu cpu, void *data);
129 /**
130 * aggr_cpu_id__core - Create an aggr_cpu_id with the core, die and socket
131 * populated with the core, die and socket for cpu. The function signature is
132 * compatible with aggr_cpu_id_get_t.
133 */
134 struct aggr_cpu_id aggr_cpu_id__core(struct perf_cpu cpu, void *data);
135 /**
136 * aggr_cpu_id__core - Create an aggr_cpu_id with the cpu, core, die and socket
137 * populated with the cpu, core, die and socket for cpu. The function signature
138 * is compatible with aggr_cpu_id_get_t.
139 */
140 struct aggr_cpu_id aggr_cpu_id__cpu(struct perf_cpu cpu, void *data);
141 /**
142 * aggr_cpu_id__node - Create an aggr_cpu_id with the numa node populated for
143 * cpu. The function signature is compatible with aggr_cpu_id_get_t.
144 */
145 struct aggr_cpu_id aggr_cpu_id__node(struct perf_cpu cpu, void *data);
146 /**
147 * aggr_cpu_id__global - Create an aggr_cpu_id for global aggregation.
148 * The function signature is compatible with aggr_cpu_id_get_t.
149 */
150 struct aggr_cpu_id aggr_cpu_id__global(struct perf_cpu cpu, void *data);
151 #endif /* __PERF_CPUMAP_H */
152