Contributors: 5
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Mark Brown |
173 |
77.58% |
1 |
20.00% |
| Tiezhu Yang |
40 |
17.94% |
1 |
20.00% |
| Christophe Leroy |
8 |
3.59% |
1 |
20.00% |
| Thomas Weißschuh |
1 |
0.45% |
1 |
20.00% |
| Bala-Vignesh-Reddy |
1 |
0.45% |
1 |
20.00% |
| Total |
223 |
|
5 |
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* vdso_test_getcpu.c: Sample code to test parse_vdso.c and vDSO getcpu()
*
* Copyright (c) 2020 Arm Ltd
*/
#include <stdint.h>
#include <elf.h>
#include <stdio.h>
#include <sys/auxv.h>
#include <sys/time.h>
#include "kselftest.h"
#include "parse_vdso.h"
#include "vdso_config.h"
#include "vdso_call.h"
typedef long (*getcpu_t)(unsigned int *, unsigned int *, void *);
int main(int argc, char **argv)
{
const char *version = versions[VDSO_VERSION];
const char **name = (const char **)&names[VDSO_NAMES];
unsigned long sysinfo_ehdr;
unsigned int cpu, node;
getcpu_t get_cpu;
long ret;
sysinfo_ehdr = getauxval(AT_SYSINFO_EHDR);
if (!sysinfo_ehdr) {
printf("AT_SYSINFO_EHDR is not present!\n");
return KSFT_SKIP;
}
vdso_init_from_sysinfo_ehdr(getauxval(AT_SYSINFO_EHDR));
get_cpu = (getcpu_t)vdso_sym(version, name[4]);
if (!get_cpu) {
printf("Could not find %s\n", name[4]);
return KSFT_SKIP;
}
ret = VDSO_CALL(get_cpu, 3, &cpu, &node, 0);
if (ret == 0) {
printf("Running on CPU %u node %u\n", cpu, node);
} else {
printf("%s failed\n", name[4]);
return KSFT_FAIL;
}
return 0;
}