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 cluster id as read from /sys/devices/system/cpu/cpuX/topology/cluster_id */ 24 int cluster; 25 /** The cache level as read from /sys/devices/system/cpu/cpuX/cache/indexY/level */ 26 int cache_lvl; 27 /** 28 * The cache instance ID, which is the first CPU in the 29 * /sys/devices/system/cpu/cpuX/cache/indexY/shared_cpu_list 30 */ 31 int cache; 32 /** The core id as read from /sys/devices/system/cpu/cpuX/topology/core_id. */ 33 int core; 34 /** CPU aggregation, note there is one CPU for each SMT thread. */ 35 struct perf_cpu cpu; 36 }; 37 38 /** A collection of aggr_cpu_id values, the "built" version is sorted and uniqued. */ 39 struct cpu_aggr_map { 40 refcount_t refcnt; 41 /** Number of valid entries. */ 42 int nr; 43 /** The entries. */ 44 struct aggr_cpu_id map[]; 45 }; 46 47 #define cpu_aggr_map__for_each_idx(idx, aggr_map) \ 48 for ((idx) = 0; (idx) < aggr_map->nr; (idx)++) 49 50 struct perf_record_cpu_map_data; 51 52 bool perf_record_cpu_map_data__test_bit(int i, const struct perf_record_cpu_map_data *data); 53 54 struct perf_cpu_map *perf_cpu_map__empty_new(int nr); 55 56 struct perf_cpu_map *cpu_map__new_data(const struct perf_record_cpu_map_data *data); 57 size_t cpu_map__snprint(struct perf_cpu_map *map, char *buf, size_t size); 58 size_t cpu_map__snprint_mask(struct perf_cpu_map *map, char *buf, size_t size); 59 size_t cpu_map__fprintf(struct perf_cpu_map *map, FILE *fp); 60 struct perf_cpu_map *cpu_map__online(void); /* thread unsafe */ 61 62 int cpu__setup_cpunode_map(void); 63 64 int cpu__max_node(void); 65 struct perf_cpu cpu__max_cpu(void); 66 struct perf_cpu cpu__max_present_cpu(void); 67 68 /** 69 * cpu_map__is_dummy - Events associated with a pid, rather than a CPU, use a single dummy map with an entry of -1. 70 */ 71 static inline bool cpu_map__is_dummy(const struct perf_cpu_map *cpus) 72 { 73 return perf_cpu_map__nr(cpus) == 1 && perf_cpu_map__cpu(cpus, 0).cpu == -1; 74 } 75 76 /** 77 * cpu__get_node - Returns the numa node X as read from 78 * /sys/devices/system/node/nodeX for the given CPU. 79 */ 80 int cpu__get_node(struct perf_cpu cpu); 81 /** 82 * cpu__get_socket_id - Returns the socket number as read from 83 * /sys/devices/system/cpu/cpuX/topology/physical_package_id for the given CPU. 84 */ 85 int cpu__get_socket_id(struct perf_cpu cpu); 86 /** 87 * cpu__get_die_id - Returns the die id as read from 88 * /sys/devices/system/cpu/cpuX/topology/die_id for the given CPU. 89 */ 90 int cpu__get_die_id(struct perf_cpu cpu); 91 /** 92 * cpu__get_cluster_id - Returns the cluster id as read from 93 * /sys/devices/system/cpu/cpuX/topology/cluster_id for the given CPU 94 */ 95 int cpu__get_cluster_id(struct perf_cpu cpu); 96 /** 97 * cpu__get_core_id - Returns the core id as read from 98 * /sys/devices/system/cpu/cpuX/topology/core_id for the given CPU. 99 */ 100 int cpu__get_core_id(struct perf_cpu cpu); 101 102 /** 103 * cpu_aggr_map__empty_new - Create a cpu_aggr_map of size nr with every entry 104 * being empty. 105 */ 106 struct cpu_aggr_map *cpu_aggr_map__empty_new(int nr); 107 108 typedef struct aggr_cpu_id (*aggr_cpu_id_get_t)(struct perf_cpu cpu, void *data); 109 110 /** 111 * cpu_aggr_map__new - Create a cpu_aggr_map with an aggr_cpu_id for each cpu in 112 * cpus. The aggr_cpu_id is created with 'get_id' that may have a data value 113 * passed to it. The cpu_aggr_map is sorted with duplicate values removed. 114 */ 115 struct cpu_aggr_map *cpu_aggr_map__new(const struct perf_cpu_map *cpus, 116 aggr_cpu_id_get_t get_id, 117 void *data, bool needs_sort); 118 119 bool aggr_cpu_id__equal(const struct aggr_cpu_id *a, const struct aggr_cpu_id *b); 120 bool aggr_cpu_id__is_empty(const struct aggr_cpu_id *a); 121 struct aggr_cpu_id aggr_cpu_id__empty(void); 122 123 124 /** 125 * aggr_cpu_id__socket - Create an aggr_cpu_id with the socket populated with 126 * the socket for cpu. The function signature is compatible with 127 * aggr_cpu_id_get_t. 128 */ 129 struct aggr_cpu_id aggr_cpu_id__socket(struct perf_cpu cpu, void *data); 130 /** 131 * aggr_cpu_id__die - Create an aggr_cpu_id with the die and socket populated 132 * with the die and socket for cpu. The function signature is compatible with 133 * aggr_cpu_id_get_t. 134 */ 135 struct aggr_cpu_id aggr_cpu_id__die(struct perf_cpu cpu, void *data); 136 /** 137 * aggr_cpu_id__cluster - Create an aggr_cpu_id with cluster, die and socket 138 * populated with the cluster, die and socket for cpu. The function signature 139 * is compatible with aggr_cpu_id_get_t. 140 */ 141 struct aggr_cpu_id aggr_cpu_id__cluster(struct perf_cpu cpu, void *data); 142 /** 143 * aggr_cpu_id__core - Create an aggr_cpu_id with the core, cluster, die and 144 * socket populated with the core, die and socket for cpu. The function 145 * signature is compatible with aggr_cpu_id_get_t. 146 */ 147 struct aggr_cpu_id aggr_cpu_id__core(struct perf_cpu cpu, void *data); 148 /** 149 * aggr_cpu_id__core - Create an aggr_cpu_id with the cpu, core, die and socket 150 * populated with the cpu, core, die and socket for cpu. The function signature 151 * is compatible with aggr_cpu_id_get_t. 152 */ 153 struct aggr_cpu_id aggr_cpu_id__cpu(struct perf_cpu cpu, void *data); 154 /** 155 * aggr_cpu_id__node - Create an aggr_cpu_id with the numa node populated for 156 * cpu. The function signature is compatible with aggr_cpu_id_get_t. 157 */ 158 struct aggr_cpu_id aggr_cpu_id__node(struct perf_cpu cpu, void *data); 159 /** 160 * aggr_cpu_id__global - Create an aggr_cpu_id for global aggregation. 161 * The function signature is compatible with aggr_cpu_id_get_t. 162 */ 163 struct aggr_cpu_id aggr_cpu_id__global(struct perf_cpu cpu, void *data); 164 #endif /* __PERF_CPUMAP_H */ 165