tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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}