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// SPDX-License-Identifier: GPL-2.0
#include <linux/bpf.h>
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_tracing.h>
#include <stdbool.h>
#ifdef ENABLE_ATOMICS_TESTS
bool skip_tests __attribute((__section__(".data"))) = false;
#else
bool skip_tests = true;
#endif
SEC("fentry/bpf_fentry_test1")
int BPF_PROG(sub, int x)
{
#ifdef ENABLE_ATOMICS_TESTS
int a = 0;
int b = __sync_fetch_and_add(&a, 1);
/* b is certainly 0 here. Can the verifier tell? */
while (b)
continue;
#endif
return 0;
}
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