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. */ 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 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. */ 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 bool perf_record_cpu_map_data__test_bit(int i, const struct perf_record_cpu_map_data *data); 41 42 struct perf_cpu_map *perf_cpu_map__empty_new(int nr); 43 44 struct perf_cpu_map *cpu_map__new_data(const struct perf_record_cpu_map_data *data); 45 size_t cpu_map__snprint(struct perf_cpu_map *map, char *buf, size_t size); 46 size_t cpu_map__snprint_mask(struct perf_cpu_map *map, char *buf, size_t size); 47 size_t cpu_map__fprintf(struct perf_cpu_map *map, FILE *fp); 48 const struct perf_cpu_map *cpu_map__online(void); /* thread unsafe */ 49 50 int cpu__setup_cpunode_map(void); 51 52 int cpu__max_node(void); 53 struct perf_cpu cpu__max_cpu(void); 54 struct 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 */ 59 static 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 */ 68 int 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 */ 73 int 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 */ 78 int 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 */ 83 int 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 */ 89 struct cpu_aggr_map *cpu_aggr_map__empty_new(int nr); 90 91 typedef 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 */ 98 struct cpu_aggr_map *cpu_aggr_map__new(const struct perf_cpu_map *cpus, 99 aggr_cpu_id_get_t get_id, 100 void *data); 101 102 bool aggr_cpu_id__equal(const struct aggr_cpu_id *a, const struct aggr_cpu_id *b); 103 bool aggr_cpu_id__is_empty(const struct aggr_cpu_id *a); 104 struct 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 */ 112 struct 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 */ 118 struct 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 */ 124 struct 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 */ 130 struct 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 */ 135 struct aggr_cpu_id aggr_cpu_id__node(struct perf_cpu cpu, void *data); 136 137 #endif /* __PERF_CPUMAP_H */ 138