1 // SPDX-License-Identifier: GPL-2.0 2 #include "linux/string.h" 3 #include "util/env.h" 4 #include "env.h" 5 6 bool 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); 17 ret: 18 return is_amd >= 1 ? true : false; 19 } 20