1 // SPDX-License-Identifier: GPL-2.0 2 // Copyright (C) 2005-2017 Andes Technology Corporation 3 4 #include <stdio.h> 5 #include <stdlib.h> 6 #include <api/fs/fs.h> 7 #include "header.h" 8 9 #define STR_LEN 1024 10 get_cpuid_str(struct perf_pmu * pmu)11char *get_cpuid_str(struct perf_pmu *pmu) 12 { 13 /* In nds32, we only have one cpu */ 14 char *buf = NULL; 15 struct cpu_map *cpus; 16 const char *sysfs = sysfs__mountpoint(); 17 18 if (!sysfs || !pmu || !pmu->cpus) 19 return NULL; 20 21 buf = malloc(STR_LEN); 22 if (!buf) 23 return NULL; 24 25 cpus = cpu_map__get(pmu->cpus); 26 sprintf(buf, "0x%x", cpus->nr - 1); 27 cpu_map__put(cpus); 28 return buf; 29 } 30