mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2026-08-09 06:14:34 +02:00
Tiezhu YangandAndrii Nakryiko
a4a5d4ee06
LoongArch uses the generic syscall table, where __NR_bpf is defined as 280 in include/uapi/asm-generic/unistd.h. To align with other architectures, add the __NR_bpf definition for LoongArch to avoid a potential compilation failure: "error __NR_bpf not defined. libbpf does not support your arch." This is a follow up patch of: commitb0c47807d3("bpf: Add sparc support to tools and samples.") commitbad1926dd2("bpf, s390: fix build for libbpf and selftest suite") commitca31ca8247("tools/bpf: fix perf build error with uClibc (seen on ARC)") commite32cb12ff5("bpf, mips: Fix build errors about __NR_bpf undeclared") Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20260526063936.16769-1-yangtiezhu@loongson.cn
51 lines
1.1 KiB
C
51 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
#include <asm/unistd.h>
|
|
#include <linux/bpf.h>
|
|
#include <unistd.h>
|
|
|
|
#ifndef __NR_bpf
|
|
# if defined(__i386__)
|
|
# define __NR_bpf 357
|
|
# elif defined(__x86_64__)
|
|
# define __NR_bpf 321
|
|
# elif defined(__aarch64__)
|
|
# define __NR_bpf 280
|
|
# elif defined(__sparc__)
|
|
# define __NR_bpf 349
|
|
# elif defined(__s390__)
|
|
# define __NR_bpf 351
|
|
# elif defined(__mips__) && defined(_ABIO32)
|
|
# define __NR_bpf 4355
|
|
# elif defined(__mips__) && defined(_ABIN32)
|
|
# define __NR_bpf 6319
|
|
# elif defined(__mips__) && defined(_ABI64)
|
|
# define __NR_bpf 5315
|
|
# elif defined(__loongarch__)
|
|
# define __NR_bpf 280
|
|
# else
|
|
# error __NR_bpf not defined. libbpf does not support your arch.
|
|
# endif
|
|
#endif
|
|
|
|
int main(void)
|
|
{
|
|
union bpf_attr attr;
|
|
|
|
/* Check fields in attr */
|
|
attr.prog_type = BPF_PROG_TYPE_KPROBE;
|
|
attr.insn_cnt = 0;
|
|
attr.insns = 0;
|
|
attr.license = 0;
|
|
attr.log_buf = 0;
|
|
attr.log_size = 0;
|
|
attr.log_level = 0;
|
|
attr.kern_version = 0;
|
|
attr.prog_flags = 0;
|
|
|
|
/*
|
|
* Test existence of __NR_bpf and BPF_PROG_LOAD.
|
|
* This call should fail if we run the testcase.
|
|
*/
|
|
return syscall(__NR_bpf, BPF_PROG_LOAD, &attr, sizeof(attr)) == 0;
|
|
}
|