On Tue, Jun 24, 2025 at 9:55 AM Leon Hwang <leon.hwang@xxxxxxxxx> wrote: > > This patch adds test coverage for the new BPF_F_CPU flag support in > percpu_array maps. The following APIs are exercised: > > * bpf_map_update_batch() > * bpf_map_lookup_batch() > * bpf_map_update_elem_opts() > * bpf_map__update_elem_opts() > * bpf_map_lookup_elem_opts() > * bpf_map__lookup_elem_opts() > > cd tools/testing/selftests/bpf/ > ./test_progs -t percpu_alloc/cpu_flag_tests > 251/5 percpu_alloc/cpu_flag_tests:OK > 251 percpu_alloc:OK > Summary: 1/1 PASSED, 0 SKIPPED, 0 FAILED > > Signed-off-by: Leon Hwang <leon.hwang@xxxxxxxxx> > --- > .../selftests/bpf/prog_tests/percpu_alloc.c | 169 ++++++++++++++++++ > .../selftests/bpf/progs/percpu_array_flag.c | 24 +++ > 2 files changed, 193 insertions(+) > create mode 100644 tools/testing/selftests/bpf/progs/percpu_array_flag.c > > diff --git a/tools/testing/selftests/bpf/prog_tests/percpu_alloc.c b/tools/testing/selftests/bpf/prog_tests/percpu_alloc.c > index 343da65864d6..5727f4601b49 100644 > --- a/tools/testing/selftests/bpf/prog_tests/percpu_alloc.c > +++ b/tools/testing/selftests/bpf/prog_tests/percpu_alloc.c > @@ -3,6 +3,7 @@ > #include "percpu_alloc_array.skel.h" > #include "percpu_alloc_cgrp_local_storage.skel.h" > #include "percpu_alloc_fail.skel.h" > +#include "percpu_array_flag.skel.h" > > static void test_array(void) > { > @@ -115,6 +116,172 @@ static void test_failure(void) { > RUN_TESTS(percpu_alloc_fail); > } > > +static void test_cpu_flag(void) > +{ > + int map_fd, *keys = NULL, value_size, cpu, i, j, nr_cpus, err; > + size_t key_sz = sizeof(int), value_sz = sizeof(u64); > + struct percpu_array_flag *skel; > + u64 batch = 0, *values = NULL; > + const u64 value = 0xDEADC0DE; > + u32 count, max_entries; > + struct bpf_map *map; > + DECLARE_LIBBPF_OPTS(bpf_map_lookup_elem_opts, lookup_opts, > + .flags = BPF_F_CPU, > + .cpu = 0, > + ); use shorter LIBBPF_OPTS macro, please > + DECLARE_LIBBPF_OPTS(bpf_map_update_elem_opts, update_opts, > + .flags = BPF_F_CPU, > + .cpu = 0, > + ); > + DECLARE_LIBBPF_OPTS(bpf_map_batch_opts, batch_opts, > + .elem_flags = BPF_F_CPU, > + .flags = 0, > + ); > + [...]