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