// SPDX-License-Identifier: GPL-2.0 #include <stdio.h> #include <stdlib.h> #include "util/evsel.h" #include "util/env.h" #include "linux/string.h" void arch_evsel__set_sample_weight(struct evsel *evsel) { evsel__set_sample_bit(evsel, WEIGHT_STRUCT); } void arch_evsel__fixup_new_cycles(struct perf_event_attr *attr) { struct perf_env env = { .total_mem = 0, } ; if (!perf_env__cpuid(&env)) return; /* * On AMD, precise cycles event sampling internally uses IBS pmu. * But IBS does not have filtering capabilities and perf by default * sets exclude_guest = 1. This makes IBS pmu event init fail and * thus perf ends up doing non-precise sampling. Avoid it by clearing * exclude_guest. */ if (env.cpuid && strstarts(env.cpuid, "AuthenticAMD")) attr->exclude_guest = 0; free(env.cpuid); }