1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __PERF_CPUMAP_H 3 #define __PERF_CPUMAP_H 4 5 #include <stdio.h> 6 #include <stdbool.h> 7 #include <internal/cpumap.h> 8 #include <perf/cpumap.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; 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 int cpu; 27 }; 28 29 /** A collection of aggr_cpu_id values, the "built" version is sorted and uniqued. */ 30 struct 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 38 struct perf_record_cpu_map_data; 39 40 struct perf_cpu_map *perf_cpu_map__empty_new(int nr); 41 42 struct perf_cpu_map *cpu_map__new_data(struct perf_record_cpu_map_data *data); 43 size_t cpu_map__snprint(struct perf_cpu_map *map, char *buf, size_t size); 44 size_t cpu_map__snprint_mask(struct perf_cpu_map *map, char *buf, size_t size); 45 size_t cpu_map__fprintf(struct perf_cpu_map *map, FILE *fp); 46 const struct perf_cpu_map *cpu_map__online(void); /* thread unsafe */ 47 48 int cpu__setup_cpunode_map(void); 49 50 int cpu__max_node(void); 51 int cpu__max_cpu(void); 52 int cpu__max_present_cpu(void); 53 /** 54 * cpu__get_node - Returns the numa node X as read from 55 * /sys/devices/system/node/nodeX for the given CPU. 56 */ 57 int cpu__get_node(int cpu); 58 /** 59 * cpu__get_socket_id - Returns the socket number as read from 60 * /sys/devices/system/cpu/cpuX/topology/physical_package_id for the given CPU. 61 */ 62 int cpu__get_socket_id(int cpu); 63 /** 64 * cpu__get_die_id - Returns the die id as read from 65 * /sys/devices/system/cpu/cpuX/topology/die_id for the given CPU. 66 */ 67 int cpu__get_die_id(int cpu); 68 /** 69 * cpu__get_core_id - Returns the core id as read from 70 * /sys/devices/system/cpu/cpuX/topology/core_id for the given CPU. 71 */ 72 int cpu__get_core_id(int cpu); 73 74 /** 75 * cpu_aggr_map__empty_new - Create a cpu_aggr_map of size nr with every entry 76 * being empty. 77 */ 78 struct cpu_aggr_map *cpu_aggr_map__empty_new(int nr); 79 80 typedef struct aggr_cpu_id (*aggr_cpu_id_get_t)(int cpu, void *data); 81 82 /** 83 * cpu_aggr_map__new - Create a cpu_aggr_map with an aggr_cpu_id for each cpu in 84 * cpus. The aggr_cpu_id is created with 'get_id' that may have a data value 85 * passed to it. The cpu_aggr_map is sorted with duplicate values removed. 86 */ 87 struct cpu_aggr_map *cpu_aggr_map__new(const struct perf_cpu_map *cpus, 88 aggr_cpu_id_get_t get_id, 89 void *data); 90 91 bool aggr_cpu_id__equal(const struct aggr_cpu_id *a, const struct aggr_cpu_id *b); 92 bool aggr_cpu_id__is_empty(const struct aggr_cpu_id *a); 93 struct aggr_cpu_id aggr_cpu_id__empty(void); 94 95 96 /** 97 * aggr_cpu_id__socket - Create an aggr_cpu_id with the socket populated with 98 * the socket for cpu. The function signature is compatible with 99 * aggr_cpu_id_get_t. 100 */ 101 struct aggr_cpu_id aggr_cpu_id__socket(int cpu, void *data); 102 /** 103 * aggr_cpu_id__die - Create an aggr_cpu_id with the die and socket populated 104 * with the die and socket for cpu. The function signature is compatible with 105 * aggr_cpu_id_get_t. 106 */ 107 struct aggr_cpu_id aggr_cpu_id__die(int cpu, void *data); 108 /** 109 * aggr_cpu_id__core - Create an aggr_cpu_id with the core, die and socket 110 * populated with the core, die and socket for cpu. The function signature is 111 * compatible with aggr_cpu_id_get_t. 112 */ 113 struct aggr_cpu_id aggr_cpu_id__core(int cpu, void *data); 114 /** 115 * aggr_cpu_id__core - Create an aggr_cpu_id with the cpu, core, die and socket 116 * populated with the cpu, core, die and socket for cpu. The function signature 117 * is compatible with aggr_cpu_id_get_t. 118 */ 119 struct aggr_cpu_id aggr_cpu_id__cpu(int cpu, void *data); 120 /** 121 * aggr_cpu_id__node - Create an aggr_cpu_id with the numa node populated for 122 * cpu. The function signature is compatible with aggr_cpu_id_get_t. 123 */ 124 struct aggr_cpu_id aggr_cpu_id__node(int cpu, void *data); 125 126 #endif /* __PERF_CPUMAP_H */ 127