1 /* 2 * Copyright (c) 2026 Advanced Micro Devices, Inc. 3 * 4 * SPDX-License-Identifier: BSD-2-Clause 5 * 6 * AMD/Intel MPERF/APERF MSR counters, and the AMD-only IRPERF counter, 7 * exposed as an hwpmc(4) PMC class. 8 */ 9 10 #ifdef _KERNEL 11 12 /* 13 * A row per MSR: MPERF, APERF and IRPERF. 14 */ 15 16 #define PERF_NPMCS_TOTAL 3 17 18 extern int tsc_perf_stat; 19 extern u_int cpu_power_ecx; 20 extern u_int amd_extended_feature_extensions; 21 22 /* 23 * Prototypes. 24 */ 25 26 int pmc_perf_initialize(struct pmc_mdep *_md, int maxcpu, int classindex); 27 void pmc_perf_finalize(struct pmc_mdep *_md); 28 #endif /* _KERNEL */ 29