1 // SPDX-License-Identifier: GPL-2.0 2 #include "util/pmu.h" 3 #include "util/pmus.h" 4 #include "util/env.h" 5 #include "map_symbol.h" 6 #include "mem-events.h" 7 #include "linux/string.h" 8 9 static char mem_loads_name[100]; 10 static bool mem_loads_name__init; 11 static char mem_stores_name[100]; 12 13 #define MEM_LOADS_AUX 0x8203 14 #define MEM_LOADS_AUX_NAME "{%s/mem-loads-aux/,%s/mem-loads,ldlat=%u/}:P" 15 16 #define E(t, n, s) { .tag = t, .name = n, .sysfs_name = s } 17 18 static struct perf_mem_event perf_mem_events_intel[PERF_MEM_EVENTS__MAX] = { 19 E("ldlat-loads", "%s/mem-loads,ldlat=%u/P", "%s/events/mem-loads"), 20 E("ldlat-stores", "%s/mem-stores/P", "%s/events/mem-stores"), 21 E(NULL, NULL, NULL), 22 }; 23 24 static struct perf_mem_event perf_mem_events_amd[PERF_MEM_EVENTS__MAX] = { 25 E(NULL, NULL, NULL), 26 E(NULL, NULL, NULL), 27 E("mem-ldst", "ibs_op//", "ibs_op"), 28 }; 29 30 static int perf_mem_is_amd_cpu(void) 31 { 32 struct perf_env env = { .total_mem = 0, }; 33 34 perf_env__cpuid(&env); 35 if (env.cpuid && strstarts(env.cpuid, "AuthenticAMD")) 36 return 1; 37 return -1; 38 } 39 40 struct perf_mem_event *perf_mem_events__ptr(int i) 41 { 42 /* 0: Uninitialized, 1: Yes, -1: No */ 43 static int is_amd; 44 45 if (i >= PERF_MEM_EVENTS__MAX) 46 return NULL; 47 48 if (!is_amd) 49 is_amd = perf_mem_is_amd_cpu(); 50 51 if (is_amd == 1) 52 return &perf_mem_events_amd[i]; 53 54 return &perf_mem_events_intel[i]; 55 } 56 57 bool is_mem_loads_aux_event(struct evsel *leader) 58 { 59 struct perf_pmu *pmu = perf_pmus__find("cpu"); 60 61 if (!pmu) 62 pmu = perf_pmus__find("cpu_core"); 63 64 if (pmu && !perf_pmu__have_event(pmu, "mem-loads-aux")) 65 return false; 66 67 return leader->core.attr.config == MEM_LOADS_AUX; 68 } 69 70 char *perf_mem_events__name(int i, char *pmu_name) 71 { 72 struct perf_mem_event *e = perf_mem_events__ptr(i); 73 74 if (!e) 75 return NULL; 76 77 if (i == PERF_MEM_EVENTS__LOAD) { 78 if (mem_loads_name__init && !pmu_name) 79 return mem_loads_name; 80 81 if (!pmu_name) { 82 mem_loads_name__init = true; 83 pmu_name = (char *)"cpu"; 84 } 85 86 if (perf_pmus__have_event(pmu_name, "mem-loads-aux")) { 87 scnprintf(mem_loads_name, sizeof(mem_loads_name), 88 MEM_LOADS_AUX_NAME, pmu_name, pmu_name, 89 perf_mem_events__loads_ldlat); 90 } else { 91 scnprintf(mem_loads_name, sizeof(mem_loads_name), 92 e->name, pmu_name, 93 perf_mem_events__loads_ldlat); 94 } 95 return mem_loads_name; 96 } 97 98 if (i == PERF_MEM_EVENTS__STORE) { 99 if (!pmu_name) 100 pmu_name = (char *)"cpu"; 101 102 scnprintf(mem_stores_name, sizeof(mem_stores_name), 103 e->name, pmu_name); 104 return mem_stores_name; 105 } 106 107 return (char *)e->name; 108 } 109