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1// SPDX-License-Identifier: GPL-2.02#include "linux/string.h"3#include "util/env.h"4#include "env.h"5 6bool x86__is_amd_cpu(void)7{8 struct perf_env env = { .total_mem = 0, };9 static int is_amd; /* 0: Uninitialized, 1: Yes, -1: No */10 11 if (is_amd)12 goto ret;13 14 perf_env__cpuid(&env);15 is_amd = env.cpuid && strstarts(env.cpuid, "AuthenticAMD") ? 1 : -1;16 perf_env__exit(&env);17ret:18 return is_amd >= 1 ? true : false;19}20