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 <stdbool.h> 8 #include <internal/cpumap.h> 9 #include <perf/cpumap.h> 10 11 /** Identify where counts are aggregated, -1 implies not to aggregate. */ 12 struct aggr_cpu_id { 13 /** A value in the range 0 to number of threads. */ 14 int thread; 15 /** The numa node X as read from /sys/devices/system/node/nodeX. */ 16 int node; 17 /** 18 * The socket number as read from 19 * /sys/devices/system/cpu/cpuX/topology/physical_package_id. 20 */ 21 int socket; 22 /** The die id as read from /sys/devices/system/cpu/cpuX/topology/die_id. */ 23 int die; 24 /** The core id as read from /sys/devices/system/cpu/cpuX/topology/core_id. */ 25 int core; 26 /** CPU aggregation, note there is one CPU for each SMT thread. */ 27 struct perf_cpu cpu; 28 }; 29 30 /** A collection of aggr_cpu_id values, the "built" version is sorted and uniqued. */ 31 struct cpu_aggr_map { 32 refcount_t refcnt; 33 /** Number of valid entries. */ 34 int nr; 35 /** The entries. */ 36 struct aggr_cpu_id map[]; 37 }; 38 39 struct perf_record_cpu_map_data; 40 41 struct perf_cpu_map *perf_cpu_map__empty_new(int nr); 42 43 struct perf_cpu_map *cpu_map__new_data(struct perf_record_cpu_map_data *data); 44 size_t cpu_map__snprint(struct perf_cpu_map *map, char *buf, size_t size); 45 size_t cpu_map__snprint_mask(struct perf_cpu_map *map, char *buf, size_t size); 46 size_t cpu_map__fprintf(struct perf_cpu_map *map, FILE *fp); 47 const struct perf_cpu_map *cpu_map__online(void); /* thread unsafe */ 48 49 int cpu__setup_cpunode_map(void); 50 51 int cpu__max_node(void); 52 struct perf_cpu cpu__max_cpu(void); 53 struct perf_cpu cpu__max_present_cpu(void); 54 55 /** 56 * cpu_map__is_dummy - Events associated with a pid, rather than a CPU, use a single dummy map with an entry of -1. 57 */ 58 static inline bool cpu_map__is_dummy(struct perf_cpu_map *cpus) 59 { 60 return cpus->nr == 1 && cpus->map[0].cpu == -1; 61 } 62 63 /** 64 * cpu__get_node - Returns the numa node X as read from 65 * /sys/devices/system/node/nodeX for the given CPU. 66 */ 67 int cpu__get_node(struct perf_cpu cpu); 68 /** 69 * cpu__get_socket_id - Returns the socket number as read from 70 * /sys/devices/system/cpu/cpuX/topology/physical_package_id for the given CPU. 71 */ 72 int cpu__get_socket_id(struct perf_cpu cpu); 73 /** 74 * cpu__get_die_id - Returns the die id as read from 75 * /sys/devices/system/cpu/cpuX/topology/die_id for the given CPU. 76 */ 77 int cpu__get_die_id(struct perf_cpu cpu); 78 /** 79 * cpu__get_core_id - Returns the core id as read from 80 * /sys/devices/system/cpu/cpuX/topology/core_id for the given CPU. 81 */ 82 int cpu__get_core_id(struct perf_cpu cpu); 83 84 /** 85 * cpu_aggr_map__empty_new - Create a cpu_aggr_map of size nr with every entry 86 * being empty. 87 */ 88 struct cpu_aggr_map *cpu_aggr_map__empty_new(int nr); 89 90 typedef struct aggr_cpu_id (*aggr_cpu_id_get_t)(struct perf_cpu cpu, void *data); 91 92 /** 93 * cpu_aggr_map__new - Create a cpu_aggr_map with an aggr_cpu_id for each cpu in 94 * cpus. The aggr_cpu_id is created with 'get_id' that may have a data value 95 * passed to it. The cpu_aggr_map is sorted with duplicate values removed. 96 */ 97 struct cpu_aggr_map *cpu_aggr_map__new(const struct perf_cpu_map *cpus, 98 aggr_cpu_id_get_t get_id, 99 void *data); 100 101 bool aggr_cpu_id__equal(const struct aggr_cpu_id *a, const struct aggr_cpu_id *b); 102 bool aggr_cpu_id__is_empty(const struct aggr_cpu_id *a); 103 struct aggr_cpu_id aggr_cpu_id__empty(void); 104 105 106 /** 107 * aggr_cpu_id__socket - Create an aggr_cpu_id with the socket populated with 108 * the socket for cpu. The function signature is compatible with 109 * aggr_cpu_id_get_t. 110 */ 111 struct aggr_cpu_id aggr_cpu_id__socket(struct perf_cpu cpu, void *data); 112 /** 113 * aggr_cpu_id__die - Create an aggr_cpu_id with the die and socket populated 114 * with the die and socket for cpu. The function signature is compatible with 115 * aggr_cpu_id_get_t. 116 */ 117 struct aggr_cpu_id aggr_cpu_id__die(struct perf_cpu cpu, void *data); 118 /** 119 * aggr_cpu_id__core - Create an aggr_cpu_id with the core, die and socket 120 * populated with the core, die and socket for cpu. The function signature is 121 * compatible with aggr_cpu_id_get_t. 122 */ 123 struct aggr_cpu_id aggr_cpu_id__core(struct perf_cpu cpu, void *data); 124 /** 125 * aggr_cpu_id__core - Create an aggr_cpu_id with the cpu, core, die and socket 126 * populated with the cpu, core, die and socket for cpu. The function signature 127 * is compatible with aggr_cpu_id_get_t. 128 */ 129 struct aggr_cpu_id aggr_cpu_id__cpu(struct perf_cpu cpu, void *data); 130 /** 131 * aggr_cpu_id__node - Create an aggr_cpu_id with the numa node populated for 132 * cpu. The function signature is compatible with aggr_cpu_id_get_t. 133 */ 134 struct aggr_cpu_id aggr_cpu_id__node(struct perf_cpu cpu, void *data); 135 136 #endif /* __PERF_CPUMAP_H */ 137