From 3831cd1f9ff627734096f22d8e37f72a5cabf92e Mon Sep 17 00:00:00 2001 From: Yonghong Song Date: Mon, 13 Jun 2022 22:55:26 -0700 Subject: [PATCH] selftests/bpf: Avoid skipping certain subtests Commit 704c91e59fe0 ('selftests/bpf: Test "bpftool gen min_core_btf"') added a test test_core_btfgen to test core relocation with btf generated with 'bpftool gen min_core_btf'. Currently, among 76 subtests, 25 are skipped. ... #46/69 core_reloc_btfgen/enumval:OK #46/70 core_reloc_btfgen/enumval___diff:OK #46/71 core_reloc_btfgen/enumval___val3_missing:OK #46/72 core_reloc_btfgen/enumval___err_missing:SKIP #46/73 core_reloc_btfgen/enum64val:OK #46/74 core_reloc_btfgen/enum64val___diff:OK #46/75 core_reloc_btfgen/enum64val___val3_missing:OK #46/76 core_reloc_btfgen/enum64val___err_missing:SKIP ... #46 core_reloc_btfgen:SKIP Summary: 1/51 PASSED, 25 SKIPPED, 0 FAILED Alexei found that in the above core_reloc_btfgen/enum64val___err_missing should not be skipped. Currently, the core_reloc tests have some negative tests. In Commit 704c91e59fe0, for core_reloc_btfgen, all negative tests are skipped with the following condition if (!test_case->btf_src_file || test_case->fails) { test__skip(); continue; } This is too conservative. Negative tests do not fail mkstemp() and run_btfgen() should not be skipped. There are a few negative tests indeed failing run_btfgen() and this patch added 'run_btfgen_fails' to mark these tests so that they can be skipped for btfgen tests. With this, we have ... #46/69 core_reloc_btfgen/enumval:OK #46/70 core_reloc_btfgen/enumval___diff:OK #46/71 core_reloc_btfgen/enumval___val3_missing:OK #46/72 core_reloc_btfgen/enumval___err_missing:OK #46/73 core_reloc_btfgen/enum64val:OK #46/74 core_reloc_btfgen/enum64val___diff:OK #46/75 core_reloc_btfgen/enum64val___val3_missing:OK #46/76 core_reloc_btfgen/enum64val___err_missing:OK ... Summary: 1/62 PASSED, 14 SKIPPED, 0 FAILED Totally 14 subtests are skipped instead of 25. Reported-by: Alexei Starovoitov Signed-off-by: Yonghong Song Link: https://lore.kernel.org/r/20220614055526.628299-1-yhs@fb.com Signed-off-by: Alexei Starovoitov --- tools/testing/selftests/bpf/prog_tests/core_reloc.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/bpf/prog_tests/core_reloc.c b/tools/testing/selftests/bpf/prog_tests/core_reloc.c index 47c1ef117275..2f92feb809be 100644 --- a/tools/testing/selftests/bpf/prog_tests/core_reloc.c +++ b/tools/testing/selftests/bpf/prog_tests/core_reloc.c @@ -84,6 +84,7 @@ static int duration = 0; #define NESTING_ERR_CASE(name) { \ NESTING_CASE_COMMON(name), \ .fails = true, \ + .run_btfgen_fails = true, \ } #define ARRAYS_DATA(struct_name) STRUCT_TO_CHAR_PTR(struct_name) { \ @@ -258,12 +259,14 @@ static int duration = 0; BITFIELDS_CASE_COMMON("test_core_reloc_bitfields_probed.o", \ "probed:", name), \ .fails = true, \ + .run_btfgen_fails = true, \ .raw_tp_name = "sys_enter", \ .prog_name = "test_core_bitfields", \ }, { \ BITFIELDS_CASE_COMMON("test_core_reloc_bitfields_direct.o", \ "direct:", name), \ .fails = true, \ + .run_btfgen_fails = true, \ .prog_name = "test_core_bitfields_direct", \ } @@ -304,6 +307,7 @@ static int duration = 0; #define SIZE_ERR_CASE(name) { \ SIZE_CASE_COMMON(name), \ .fails = true, \ + .run_btfgen_fails = true, \ } #define TYPE_BASED_CASE_COMMON(name) \ @@ -396,6 +400,7 @@ struct core_reloc_test_case { const char *output; int output_len; bool fails; + bool run_btfgen_fails; bool needs_testmod; bool relaxed_core_relocs; const char *prog_name; @@ -952,7 +957,7 @@ static void run_core_reloc_tests(bool use_btfgen) /* generate a "minimal" BTF file and use it as source */ if (use_btfgen) { - if (!test_case->btf_src_file || test_case->fails) { + if (!test_case->btf_src_file || test_case->run_btfgen_fails) { test__skip(); continue; }