LXR linux/tools/perf/arch/nds32/util/header.c

   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
  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