tools/perf/arch/x86/util/mem-events.c

   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 #include "env.h"
   9
  10 static char mem_loads_name[100];
  11 static bool mem_loads_name__init;
  12 static char mem_stores_name[100];
  13
  14 #define MEM_LOADS_AUX           0x8203
  15 #define MEM_LOADS_AUX_NAME     "{%s/mem-loads-aux/,%s/mem-loads,ldlat=%u/}:P"
  16
  17 #define E(t, n, s) { .tag = t, .name = n, .sysfs_name = s }
  18
  19 static struct perf_mem_event perf_mem_events_intel[PERF_MEM_EVENTS__MAX] = {
  20         E("ldlat-loads",        "%s/mem-loads,ldlat=%u/P",      "%s/events/mem-loads"),
  21         E("ldlat-stores",       "%s/mem-stores/P",              "%s/events/mem-stores"),
  22         E(NULL,                 NULL,                           NULL),
  23 };
  24
  25 static struct perf_mem_event perf_mem_events_amd[PERF_MEM_EVENTS__MAX] = {
  26         E(NULL,         NULL,           NULL),
  27         E(NULL,         NULL,           NULL),
  28         E("mem-ldst",   "ibs_op//",     "ibs_op"),
  29 };
  30
  31 struct perf_mem_event *perf_mem_events__ptr(int i)
  32 {
  33         if (i >= PERF_MEM_EVENTS__MAX)
  34                 return NULL;
  35
  36         if (x86__is_amd_cpu())
  37                 return &perf_mem_events_amd[i];
  38
  39         return &perf_mem_events_intel[i];
  40 }
  41
  42 bool is_mem_loads_aux_event(struct evsel *leader)
  43 {
  44         struct perf_pmu *pmu = perf_pmus__find("cpu");
  45
  46         if (!pmu)
  47                 pmu = perf_pmus__find("cpu_core");
  48
  49         if (pmu && !perf_pmu__have_event(pmu, "mem-loads-aux"))
  50                 return false;
  51
  52         return leader->core.attr.config == MEM_LOADS_AUX;
  53 }
  54
  55 char *perf_mem_events__name(int i, char *pmu_name)
  56 {
  57         struct perf_mem_event *e = perf_mem_events__ptr(i);
  58
  59         if (!e)
  60                 return NULL;
  61
  62         if (i == PERF_MEM_EVENTS__LOAD) {
  63                 if (mem_loads_name__init && !pmu_name)
  64                         return mem_loads_name;
  65
  66                 if (!pmu_name) {
  67                         mem_loads_name__init = true;
  68                         pmu_name = (char *)"cpu";
  69                 }
  70
  71                 if (perf_pmus__have_event(pmu_name, "mem-loads-aux")) {
  72                         scnprintf(mem_loads_name, sizeof(mem_loads_name),
  73                                   MEM_LOADS_AUX_NAME, pmu_name, pmu_name,
  74                                   perf_mem_events__loads_ldlat);
  75                 } else {
  76                         scnprintf(mem_loads_name, sizeof(mem_loads_name),
  77                                   e->name, pmu_name,
  78                                   perf_mem_events__loads_ldlat);
  79                 }
  80                 return mem_loads_name;
  81         }
  82
  83         if (i == PERF_MEM_EVENTS__STORE) {
  84                 if (!pmu_name)
  85                         pmu_name = (char *)"cpu";
  86
  87                 scnprintf(mem_stores_name, sizeof(mem_stores_name),
  88                           e->name, pmu_name);
  89                 return mem_stores_name;
  90         }
  91
  92         return (char *)e->name;
  93 }