On Mon, Mar 17, 2025 at 3:50 PM Vadim Fedorenko <vadfed@xxxxxxxx> wrote:
>
> bpf_get_cpu_time_counter() is replaced with rdtsc instruction on x86_64.
> Add tests to check that JIT works as expected.
>
> Acked-by: Eduard Zingerman <eddyz87@xxxxxxxxx>
> Signed-off-by: Vadim Fedorenko <vadfed@xxxxxxxx>
> ---
> .../selftests/bpf/prog_tests/verifier.c | 2 +
> .../selftests/bpf/progs/verifier_cpu_cycles.c | 104 ++++++++++++++++++
> 2 files changed, 106 insertions(+)
> create mode 100644 tools/testing/selftests/bpf/progs/verifier_cpu_cycles.c
>
> diff --git a/tools/testing/selftests/bpf/prog_tests/verifier.c b/tools/testing/selftests/bpf/prog_tests/verifier.c
> index e66a57970d28..d5e7e302a344 100644
> --- a/tools/testing/selftests/bpf/prog_tests/verifier.c
> +++ b/tools/testing/selftests/bpf/prog_tests/verifier.c
> @@ -102,6 +102,7 @@
> #include "verifier_xdp_direct_packet_access.skel.h"
> #include "verifier_bits_iter.skel.h"
> #include "verifier_lsm.skel.h"
> +#include "verifier_cpu_cycles.skel.h"
> #include "irq.skel.h"
>
> #define MAX_ENTRIES 11
> @@ -236,6 +237,7 @@ void test_verifier_bits_iter(void) { RUN(verifier_bits_iter); }
> void test_verifier_lsm(void) { RUN(verifier_lsm); }
> void test_irq(void) { RUN(irq); }
> void test_verifier_mtu(void) { RUN(verifier_mtu); }
> +void test_verifier_cpu_cycles(void) { RUN(verifier_cpu_cycles); }
>
> static int init_test_val_map(struct bpf_object *obj, char *map_name)
> {
> diff --git a/tools/testing/selftests/bpf/progs/verifier_cpu_cycles.c b/tools/testing/selftests/bpf/progs/verifier_cpu_cycles.c
> new file mode 100644
> index 000000000000..5b62e3690362
> --- /dev/null
> +++ b/tools/testing/selftests/bpf/progs/verifier_cpu_cycles.c
> @@ -0,0 +1,104 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/* Copyright (c) 2022 Meta Inc. */
botched copy paste.
