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