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48f044a784
It could not find __vdso_getcpu and __vdso_gettimeofday when test getcpu
and gettimeofday on LoongArch.
# make headers && cd tools/testing/selftests/vDSO && make
# ./vdso_test_getcpu
Could not find __vdso_getcpu
# ./vdso_test_gettimeofday
Could not find __vdso_gettimeofday
One simple way is to add LoongArch case to define version and name, just
like commit d942f231af ("selftests/vDSO: Add riscv getcpu & gettimeofday
test"), but it is not the best way.
Since each architecture has already defined names and versions in
vdso_config.h, it is proper to include vdso_config.h to get version and
name for all archs.
Link: https://lkml.kernel.org/r/20240428030530.24399-3-yangtiezhu@loongson.cn
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Reviewed-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Tested-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Mark Brown <broonie@kernel.org>
Cc: Shuah Khan <skhan@linuxfoundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
55 lines
1.1 KiB
C
55 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* vdso_test_getcpu.c: Sample code to test parse_vdso.c and vDSO getcpu()
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*
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* Copyright (c) 2020 Arm Ltd
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*/
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#include <stdint.h>
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#include <elf.h>
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#include <stdio.h>
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#include <sys/auxv.h>
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#include <sys/time.h>
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#include "../kselftest.h"
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#include "parse_vdso.h"
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#include "vdso_config.h"
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struct getcpu_cache;
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typedef long (*getcpu_t)(unsigned int *, unsigned int *,
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struct getcpu_cache *);
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int main(int argc, char **argv)
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{
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const char *version = versions[VDSO_VERSION];
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const char **name = (const char **)&names[VDSO_NAMES];
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unsigned long sysinfo_ehdr;
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unsigned int cpu, node;
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getcpu_t get_cpu;
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long ret;
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sysinfo_ehdr = getauxval(AT_SYSINFO_EHDR);
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if (!sysinfo_ehdr) {
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printf("AT_SYSINFO_EHDR is not present!\n");
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return KSFT_SKIP;
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}
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vdso_init_from_sysinfo_ehdr(getauxval(AT_SYSINFO_EHDR));
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get_cpu = (getcpu_t)vdso_sym(version, name[4]);
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if (!get_cpu) {
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printf("Could not find %s\n", name[4]);
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return KSFT_SKIP;
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}
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ret = get_cpu(&cpu, &node, 0);
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if (ret == 0) {
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printf("Running on CPU %u node %u\n", cpu, node);
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} else {
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printf("%s failed\n", name[4]);
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return KSFT_FAIL;
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}
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return 0;
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}
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