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selftests/bpf: Add selftests for bpf_perf_event_output

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Software event output is only enabled by a few prog types.
This test is to ensure that all supported types are enabled for
bpf_perf_event_output successfully.

Signed-off-by: Allan Zhang <allanzhang@google.com>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Allan Zhang
2019-07-23 17:07:25 -07:00
committed by Alexei Starovoitov
parent 7c4b90d79d
commit 03cd1d1a49
2 changed files with 105 additions and 1 deletions
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12
tools/testing/selftests/bpf/test_verifier.c
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@@ -50,7 +50,7 @@
#define MAX_INSNS BPF_MAXINSNS
#define MAX_TEST_INSNS 1000000
#define MAX_FIXUPS 8
#define MAX_NR_MAPS 18
#define MAX_NR_MAPS 19
#define MAX_TEST_RUNS 8
#define POINTER_VALUE 0xcafe4all
#define TEST_DATA_LEN 64
@@ -84,6 +84,7 @@ struct bpf_test {
int fixup_map_array_wo[MAX_FIXUPS];
int fixup_map_array_small[MAX_FIXUPS];
int fixup_sk_storage_map[MAX_FIXUPS];
int fixup_map_event_output[MAX_FIXUPS];
const char *errstr;
const char *errstr_unpriv;
uint32_t insn_processed;
@@ -632,6 +633,7 @@ static void do_test_fixup(struct bpf_test *test, enum bpf_prog_type prog_type,
int *fixup_map_array_wo = test->fixup_map_array_wo;
int *fixup_map_array_small = test->fixup_map_array_small;
int *fixup_sk_storage_map = test->fixup_sk_storage_map;
int *fixup_map_event_output = test->fixup_map_event_output;
if (test->fill_helper) {
test->fill_insns = calloc(MAX_TEST_INSNS, sizeof(struct bpf_insn));
@@ -793,6 +795,14 @@ static void do_test_fixup(struct bpf_test *test, enum bpf_prog_type prog_type,
fixup_sk_storage_map++;
} while (*fixup_sk_storage_map);
}
if (*fixup_map_event_output) {
map_fds[18] = __create_map(BPF_MAP_TYPE_PERF_EVENT_ARRAY,
sizeof(int), sizeof(int), 1, 0);
do {
prog[*fixup_map_event_output].imm = map_fds[18];
fixup_map_event_output++;
} while (*fixup_map_event_output);
}
}
static int set_admin(bool admin)