kernel_optimize_test/samples/bpf/syscall_nrs.c
Ivan Khoronzhuk bb4b5c08a8 samples: bpf: syscall_nrs: use mmap2 if defined
For arm32 xdp sockets mmap2 is preferred, so use it if it's defined.
Declaration of __NR_mmap can be skipped and it breaks build.

Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Acked-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-08-21 14:31:38 +02:00

20 lines
337 B
C

// SPDX-License-Identifier: GPL-2.0
#include <uapi/linux/unistd.h>
#include <linux/kbuild.h>
#define SYSNR(_NR) DEFINE(SYS ## _NR, _NR)
void syscall_defines(void)
{
COMMENT("Linux system call numbers.");
SYSNR(__NR_write);
SYSNR(__NR_read);
#ifdef __NR_mmap2
SYSNR(__NR_mmap2);
#endif
#ifdef __NR_mmap
SYSNR(__NR_mmap);
#endif
}