linux/tools/testing/selftests/bpf/progs/test_enable_stats.c
Yucong Sun d719de0d2f selftests/bpf: Fix race condition in enable_stats
In parallel execution mode, this test now need to use atomic operation
to avoid race condition.

Signed-off-by: Yucong Sun <sunyucong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211006185619.364369-7-fallentree@fb.com
2021-10-08 15:10:43 -07:00

19 lines
339 B
C

// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2020 Facebook
#include <linux/bpf.h>
#include <stdint.h>
#include <linux/types.h>
#include <bpf/bpf_helpers.h>
char _license[] SEC("license") = "GPL";
__u64 count = 0;
SEC("raw_tracepoint/sys_enter")
int test_enable_stats(void *ctx)
{
__sync_fetch_and_add(&count, 1);
return 0;
}