root/tools/perf/arch/nds32/util/header.c

DEFINITIONS

1. get_cpuid_str

   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 
  11 char *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 }