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selftests/bpf: Extract syscall wrapper 

Extract the helper to set up SYS_PREFIX for fentry and kprobe selftests
that use __x86_sys_* attach functions.

Suggested-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Kenta Tada <Kenta.Tada@sony.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220124141622.4378-2-Kenta.Tada@sony.com
This commit is contained in:
Kenta Tada 2022-01-24 23:16:20 +09:00 committed by Andrii Nakryiko
parent fc76387003
commit 78a2054156
2 changed files with 20 additions and 14 deletions
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19
tools/testing/selftests/bpf/progs/bpf_misc.h Normal file
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@ -0,0 +1,19 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __BPF_MISC_H__
#define __BPF_MISC_H__
#if defined(__TARGET_ARCH_x86)
#define SYSCALL_WRAPPER 1
#define SYS_PREFIX "__x64_"
#elif defined(__TARGET_ARCH_s390)
#define SYSCALL_WRAPPER 1
#define SYS_PREFIX "__s390x_"
#elif defined(__TARGET_ARCH_arm64)
#define SYSCALL_WRAPPER 1
#define SYS_PREFIX "__arm64_"
#else
#define SYSCALL_WRAPPER 0
#define SYS_PREFIX ""
#endif
#endif

15
tools/testing/selftests/bpf/progs/test_probe_user.c
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@ -7,20 +7,7 @@
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_tracing.h>
#if defined(__TARGET_ARCH_x86)
#define SYSCALL_WRAPPER 1
#define SYS_PREFIX "__x64_"
#elif defined(__TARGET_ARCH_s390)
#define SYSCALL_WRAPPER 1
#define SYS_PREFIX "__s390x_"
#elif defined(__TARGET_ARCH_arm64)
#define SYSCALL_WRAPPER 1
#define SYS_PREFIX "__arm64_"
#else
#define SYSCALL_WRAPPER 0
#define SYS_PREFIX ""
#endif
#include "bpf_misc.h"
static struct sockaddr_in old;