1 // SPDX-License-Identifier: GPL-2.0 2 #include "util/pmu.h" 3 #include "util/env.h" 4 #include "map_symbol.h" 5 #include "mem-events.h" 6 #include "linux/string.h" 7 8 static char mem_loads_name[100]; 9 static bool mem_loads_name__init; 10 static char mem_stores_name[100]; 11 12 #define MEM_LOADS_AUX 0x8203 13 #define MEM_LOADS_AUX_NAME "{%s/mem-loads-aux/,%s/mem-loads,ldlat=%u/}:P" 14 15 #define E(t, n, s) { .tag = t, .name = n, .sysfs_name = s } 16 17 static struct perf_mem_event perf_mem_events_intel[PERF_MEM_EVENTS__MAX] = { 18 E("ldlat-loads", "%s/mem-loads,ldlat=%u/P", "%s/events/mem-loads"), 19 E("ldlat-stores", "%s/mem-stores/P", "%s/events/mem-stores"), 20 E(NULL, NULL, NULL), 21 }; 22 23 static struct perf_mem_event perf_mem_events_amd[PERF_MEM_EVENTS__MAX] = { 24 E(NULL, NULL, NULL), 25 E(NULL, NULL, NULL), 26 E("mem-ldst", "ibs_op//", "ibs_op"), 27 }; 28 29 static int perf_mem_is_amd_cpu(void) 30 { 31 struct perf_env env = { .total_mem = 0, }; 32 33 perf_env__cpuid(&env); 34 if (env.cpuid && strstarts(env.cpuid, "AuthenticAMD")) 35 return 1; 36 return -1; 37 } 38 39 struct perf_mem_event *perf_mem_events__ptr(int i) 40 { 41 /* 0: Uninitialized, 1: Yes, -1: No */ 42 static int is_amd; 43 44 if (i >= PERF_MEM_EVENTS__MAX) 45 return NULL; 46 47 if (!is_amd) 48 is_amd = perf_mem_is_amd_cpu(); 49 50 if (is_amd == 1) 51 return &perf_mem_events_amd[i]; 52 53 return &perf_mem_events_intel[i]; 54 } 55 56 bool is_mem_loads_aux_event(struct evsel *leader) 57 { 58 if (perf_pmu__find("cpu")) { 59 if (!pmu_have_event("cpu", "mem-loads-aux")) 60 return false; 61 } else if (perf_pmu__find("cpu_core")) { 62 if (!pmu_have_event("cpu_core", "mem-loads-aux")) 63 return false; 64 } 65 66 return leader->core.attr.config == MEM_LOADS_AUX; 67 } 68 69 char *perf_mem_events__name(int i, char *pmu_name) 70 { 71 struct perf_mem_event *e = perf_mem_events__ptr(i); 72 73 if (!e) 74 return NULL; 75 76 if (i == PERF_MEM_EVENTS__LOAD) { 77 if (mem_loads_name__init && !pmu_name) 78 return mem_loads_name; 79 80 if (!pmu_name) { 81 mem_loads_name__init = true; 82 pmu_name = (char *)"cpu"; 83 } 84 85 if (pmu_have_event(pmu_name, "mem-loads-aux")) { 86 scnprintf(mem_loads_name, sizeof(mem_loads_name), 87 MEM_LOADS_AUX_NAME, pmu_name, pmu_name, 88 perf_mem_events__loads_ldlat); 89 } else { 90 scnprintf(mem_loads_name, sizeof(mem_loads_name), 91 e->name, pmu_name, 92 perf_mem_events__loads_ldlat); 93 } 94 return mem_loads_name; 95 } 96 97 if (i == PERF_MEM_EVENTS__STORE) { 98 if (!pmu_name) 99 pmu_name = (char *)"cpu"; 100 101 scnprintf(mem_stores_name, sizeof(mem_stores_name), 102 e->name, pmu_name); 103 return mem_stores_name; 104 } 105 106 return (char *)e->name; 107 } 108