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

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include "util/pmu.h"
   3 #include "map_symbol.h"
   4 #include "mem-events.h"
   5
   6 static char mem_loads_name[100];
   7 static bool mem_loads_name__init;
   8 static char mem_stores_name[100];
   9
  10 #define MEM_LOADS_AUX           0x8203
  11 #define MEM_LOADS_AUX_NAME     "{%s/mem-loads-aux/,%s/mem-loads,ldlat=%u/}:P"
  12
  13 #define E(t, n, s) { .tag = t, .name = n, .sysfs_name = s }
  14
  15 static struct perf_mem_event perf_mem_events[PERF_MEM_EVENTS__MAX] = {
  16         E("ldlat-loads",        "%s/mem-loads,ldlat=%u/P",      "%s/events/mem-loads"),
  17         E("ldlat-stores",       "%s/mem-stores/P",              "%s/events/mem-stores"),
  18         E(NULL,                 NULL,                           NULL),
  19 };
  20
  21 struct perf_mem_event *perf_mem_events__ptr(int i)
  22 {
  23         if (i >= PERF_MEM_EVENTS__MAX)
  24                 return NULL;
  25
  26         return &perf_mem_events[i];
  27 }
  28
  29 bool is_mem_loads_aux_event(struct evsel *leader)
  30 {
  31         if (perf_pmu__find("cpu")) {
  32                 if (!pmu_have_event("cpu", "mem-loads-aux"))
  33                         return false;
  34         } else if (perf_pmu__find("cpu_core")) {
  35                 if (!pmu_have_event("cpu_core", "mem-loads-aux"))
  36                         return false;
  37         }
  38
  39         return leader->core.attr.config == MEM_LOADS_AUX;
  40 }
  41
  42 char *perf_mem_events__name(int i, char *pmu_name)
  43 {
  44         struct perf_mem_event *e = perf_mem_events__ptr(i);
  45
  46         if (!e)
  47                 return NULL;
  48
  49         if (i == PERF_MEM_EVENTS__LOAD) {
  50                 if (mem_loads_name__init && !pmu_name)
  51                         return mem_loads_name;
  52
  53                 if (!pmu_name) {
  54                         mem_loads_name__init = true;
  55                         pmu_name = (char *)"cpu";
  56                 }
  57
  58                 if (pmu_have_event(pmu_name, "mem-loads-aux")) {
  59                         scnprintf(mem_loads_name, sizeof(mem_loads_name),
  60                                   MEM_LOADS_AUX_NAME, pmu_name, pmu_name,
  61                                   perf_mem_events__loads_ldlat);
  62                 } else {
  63                         scnprintf(mem_loads_name, sizeof(mem_loads_name),
  64                                   e->name, pmu_name,
  65                                   perf_mem_events__loads_ldlat);
  66                 }
  67                 return mem_loads_name;
  68         }
  69
  70         if (i == PERF_MEM_EVENTS__STORE) {
  71                 if (!pmu_name)
  72                         pmu_name = (char *)"cpu";
  73
  74                 scnprintf(mem_stores_name, sizeof(mem_stores_name),
  75                           e->name, pmu_name);
  76                 return mem_stores_name;
  77         }
  78
  79         return (char *)e->name;
  80 }