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 */ 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