108 lines
2.5 KiB
C
108 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include "util/pmu.h"
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#include "util/env.h"
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#include "map_symbol.h"
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#include "mem-events.h"
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#include "linux/string.h"
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static char mem_loads_name[100];
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static bool mem_loads_name__init;
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static char mem_stores_name[100];
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#define MEM_LOADS_AUX 0x8203
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#define MEM_LOADS_AUX_NAME "{%s/mem-loads-aux/,%s/mem-loads,ldlat=%u/}:P"
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#define E(t, n, s) { .tag = t, .name = n, .sysfs_name = s }
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static struct perf_mem_event perf_mem_events_intel[PERF_MEM_EVENTS__MAX] = {
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E("ldlat-loads", "%s/mem-loads,ldlat=%u/P", "%s/events/mem-loads"),
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E("ldlat-stores", "%s/mem-stores/P", "%s/events/mem-stores"),
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E(NULL, NULL, NULL),
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};
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static struct perf_mem_event perf_mem_events_amd[PERF_MEM_EVENTS__MAX] = {
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E(NULL, NULL, NULL),
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E(NULL, NULL, NULL),
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E("mem-ldst", "ibs_op//", "ibs_op"),
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};
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static int perf_mem_is_amd_cpu(void)
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{
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struct perf_env env = { .total_mem = 0, };
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perf_env__cpuid(&env);
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if (env.cpuid && strstarts(env.cpuid, "AuthenticAMD"))
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return 1;
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return -1;
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}
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struct perf_mem_event *perf_mem_events__ptr(int i)
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{
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/* 0: Uninitialized, 1: Yes, -1: No */
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static int is_amd;
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if (i >= PERF_MEM_EVENTS__MAX)
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return NULL;
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if (!is_amd)
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is_amd = perf_mem_is_amd_cpu();
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if (is_amd == 1)
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return &perf_mem_events_amd[i];
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return &perf_mem_events_intel[i];
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}
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bool is_mem_loads_aux_event(struct evsel *leader)
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{
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if (perf_pmu__find("cpu")) {
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if (!pmu_have_event("cpu", "mem-loads-aux"))
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return false;
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} else if (perf_pmu__find("cpu_core")) {
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if (!pmu_have_event("cpu_core", "mem-loads-aux"))
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return false;
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}
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return leader->core.attr.config == MEM_LOADS_AUX;
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}
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char *perf_mem_events__name(int i, char *pmu_name)
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{
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struct perf_mem_event *e = perf_mem_events__ptr(i);
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if (!e)
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return NULL;
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if (i == PERF_MEM_EVENTS__LOAD) {
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if (mem_loads_name__init && !pmu_name)
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return mem_loads_name;
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if (!pmu_name) {
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mem_loads_name__init = true;
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pmu_name = (char *)"cpu";
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}
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if (pmu_have_event(pmu_name, "mem-loads-aux")) {
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scnprintf(mem_loads_name, sizeof(mem_loads_name),
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MEM_LOADS_AUX_NAME, pmu_name, pmu_name,
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perf_mem_events__loads_ldlat);
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} else {
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scnprintf(mem_loads_name, sizeof(mem_loads_name),
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e->name, pmu_name,
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perf_mem_events__loads_ldlat);
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}
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return mem_loads_name;
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}
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if (i == PERF_MEM_EVENTS__STORE) {
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if (!pmu_name)
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pmu_name = (char *)"cpu";
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scnprintf(mem_stores_name, sizeof(mem_stores_name),
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e->name, pmu_name);
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return mem_stores_name;
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}
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return (char *)e->name;
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}
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