162306a36Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0 262306a36Sopenharmony_ci#include "linux/string.h" 362306a36Sopenharmony_ci#include "util/env.h" 462306a36Sopenharmony_ci#include "env.h" 562306a36Sopenharmony_ci 662306a36Sopenharmony_cibool x86__is_amd_cpu(void) 762306a36Sopenharmony_ci{ 862306a36Sopenharmony_ci struct perf_env env = { .total_mem = 0, }; 962306a36Sopenharmony_ci static int is_amd; /* 0: Uninitialized, 1: Yes, -1: No */ 1062306a36Sopenharmony_ci 1162306a36Sopenharmony_ci if (is_amd) 1262306a36Sopenharmony_ci goto ret; 1362306a36Sopenharmony_ci 1462306a36Sopenharmony_ci perf_env__cpuid(&env); 1562306a36Sopenharmony_ci is_amd = env.cpuid && strstarts(env.cpuid, "AuthenticAMD") ? 1 : -1; 1662306a36Sopenharmony_ci perf_env__exit(&env); 1762306a36Sopenharmony_ciret: 1862306a36Sopenharmony_ci return is_amd >= 1 ? true : false; 1962306a36Sopenharmony_ci} 20