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Commit 7999cf7d authored by Ilya Leoshkevich's avatar Ilya Leoshkevich Committed by Alexei Starovoitov
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selftests/bpf: Add BTF_KIND_FLOAT to the existing deduplication tests 

Check that floats don't interfere with struct deduplication, that they
are not merged with another kinds and that floats of different sizes are
not merged with each other.
Suggested-by: default avatarAndrii Nakryiko <andrii@kernel.org>
Signed-off-by: default avatarIlya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
Acked-by: default avatarAndrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210226202256.116518-9-iii@linux.ibm.com
parent 7e72aad3
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Showing with 31 additions and 12 deletions
tools/testing/selftests/bpf/prog_tests/btf.c
View file @ 7999cf7d
...@@ -6411,11 +6411,12 @@ const struct btf_dedup_test dedup_tests[] = { ...@@ -6411,11 +6411,12 @@ const struct btf_dedup_test dedup_tests[] = {
/* int[16] */ /* int[16] */
BTF_TYPE_ARRAY_ENC(1, 1, 16), /* [2] */ BTF_TYPE_ARRAY_ENC(1, 1, 16), /* [2] */
/* struct s { */ /* struct s { */
BTF_STRUCT_ENC(NAME_NTH(2), 4, 84), /* [3] */ BTF_STRUCT_ENC(NAME_NTH(2), 5, 88), /* [3] */
BTF_MEMBER_ENC(NAME_NTH(3), 4, 0), /* struct s *next; */ BTF_MEMBER_ENC(NAME_NTH(3), 4, 0), /* struct s *next; */
BTF_MEMBER_ENC(NAME_NTH(4), 5, 64), /* const int *a; */ BTF_MEMBER_ENC(NAME_NTH(4), 5, 64), /* const int *a; */
BTF_MEMBER_ENC(NAME_NTH(5), 2, 128), /* int b[16]; */ BTF_MEMBER_ENC(NAME_NTH(5), 2, 128), /* int b[16]; */
BTF_MEMBER_ENC(NAME_NTH(6), 1, 640), /* int c; */ BTF_MEMBER_ENC(NAME_NTH(6), 1, 640), /* int c; */
BTF_MEMBER_ENC(NAME_NTH(8), 13, 672), /* float d; */
/* ptr -> [3] struct s */ /* ptr -> [3] struct s */
BTF_PTR_ENC(3), /* [4] */ BTF_PTR_ENC(3), /* [4] */
/* ptr -> [6] const int */ /* ptr -> [6] const int */
...@@ -6426,39 +6427,43 @@ const struct btf_dedup_test dedup_tests[] = { ...@@ -6426,39 +6427,43 @@ const struct btf_dedup_test dedup_tests[] = {
/* full copy of the above */ /* full copy of the above */
BTF_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_SIGNED, 0, 32, 4), /* [7] */ BTF_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_SIGNED, 0, 32, 4), /* [7] */
BTF_TYPE_ARRAY_ENC(7, 7, 16), /* [8] */ BTF_TYPE_ARRAY_ENC(7, 7, 16), /* [8] */
BTF_STRUCT_ENC(NAME_NTH(2), 4, 84), /* [9] */ BTF_STRUCT_ENC(NAME_NTH(2), 5, 88), /* [9] */
BTF_MEMBER_ENC(NAME_NTH(3), 10, 0), BTF_MEMBER_ENC(NAME_NTH(3), 10, 0),
BTF_MEMBER_ENC(NAME_NTH(4), 11, 64), BTF_MEMBER_ENC(NAME_NTH(4), 11, 64),
BTF_MEMBER_ENC(NAME_NTH(5), 8, 128), BTF_MEMBER_ENC(NAME_NTH(5), 8, 128),
BTF_MEMBER_ENC(NAME_NTH(6), 7, 640), BTF_MEMBER_ENC(NAME_NTH(6), 7, 640),
BTF_MEMBER_ENC(NAME_NTH(8), 13, 672),
BTF_PTR_ENC(9), /* [10] */ BTF_PTR_ENC(9), /* [10] */
BTF_PTR_ENC(12), /* [11] */ BTF_PTR_ENC(12), /* [11] */
BTF_CONST_ENC(7), /* [12] */ BTF_CONST_ENC(7), /* [12] */
BTF_TYPE_FLOAT_ENC(NAME_NTH(7), 4), /* [13] */
BTF_END_RAW, BTF_END_RAW,
}, },
BTF_STR_SEC("\0int\0s\0next\0a\0b\0c\0"), BTF_STR_SEC("\0int\0s\0next\0a\0b\0c\0float\0d"),
}, },
.expect = { .expect = {
.raw_types = { .raw_types = {
/* int */ /* int */
BTF_TYPE_INT_ENC(NAME_NTH(4), BTF_INT_SIGNED, 0, 32, 4), /* [1] */ BTF_TYPE_INT_ENC(NAME_NTH(5), BTF_INT_SIGNED, 0, 32, 4), /* [1] */
/* int[16] */ /* int[16] */
BTF_TYPE_ARRAY_ENC(1, 1, 16), /* [2] */ BTF_TYPE_ARRAY_ENC(1, 1, 16), /* [2] */
/* struct s { */ /* struct s { */
BTF_STRUCT_ENC(NAME_NTH(6), 4, 84), /* [3] */ BTF_STRUCT_ENC(NAME_NTH(8), 5, 88), /* [3] */
BTF_MEMBER_ENC(NAME_NTH(5), 4, 0), /* struct s *next; */ BTF_MEMBER_ENC(NAME_NTH(7), 4, 0), /* struct s *next; */
BTF_MEMBER_ENC(NAME_NTH(1), 5, 64), /* const int *a; */ BTF_MEMBER_ENC(NAME_NTH(1), 5, 64), /* const int *a; */
BTF_MEMBER_ENC(NAME_NTH(2), 2, 128), /* int b[16]; */ BTF_MEMBER_ENC(NAME_NTH(2), 2, 128), /* int b[16]; */
BTF_MEMBER_ENC(NAME_NTH(3), 1, 640), /* int c; */ BTF_MEMBER_ENC(NAME_NTH(3), 1, 640), /* int c; */
BTF_MEMBER_ENC(NAME_NTH(4), 7, 672), /* float d; */
/* ptr -> [3] struct s */ /* ptr -> [3] struct s */
BTF_PTR_ENC(3), /* [4] */ BTF_PTR_ENC(3), /* [4] */
/* ptr -> [6] const int */ /* ptr -> [6] const int */
BTF_PTR_ENC(6), /* [5] */ BTF_PTR_ENC(6), /* [5] */
/* const -> [1] int */ /* const -> [1] int */
BTF_CONST_ENC(1), /* [6] */ BTF_CONST_ENC(1), /* [6] */
BTF_TYPE_FLOAT_ENC(NAME_NTH(7), 4), /* [7] */
BTF_END_RAW, BTF_END_RAW,
}, },
BTF_STR_SEC("\0a\0b\0c\0int\0next\0s"), BTF_STR_SEC("\0a\0b\0c\0d\0int\0float\0next\0s"),
}, },
.opts = { .opts = {
.dont_resolve_fwds = false, .dont_resolve_fwds = false,
...@@ -6579,9 +6584,10 @@ const struct btf_dedup_test dedup_tests[] = { ...@@ -6579,9 +6584,10 @@ const struct btf_dedup_test dedup_tests[] = {
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1), BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 8), BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 8),
BTF_FUNC_ENC(NAME_TBD, 12), /* [13] func */ BTF_FUNC_ENC(NAME_TBD, 12), /* [13] func */
BTF_TYPE_FLOAT_ENC(NAME_TBD, 2), /* [14] float */
BTF_END_RAW, BTF_END_RAW,
}, },
BTF_STR_SEC("\0A\0B\0C\0D\0E\0F\0G\0H\0I\0J\0K\0L\0M"), BTF_STR_SEC("\0A\0B\0C\0D\0E\0F\0G\0H\0I\0J\0K\0L\0M\0N"),
}, },
.expect = { .expect = {
.raw_types = { .raw_types = {
...@@ -6604,16 +6610,17 @@ const struct btf_dedup_test dedup_tests[] = { ...@@ -6604,16 +6610,17 @@ const struct btf_dedup_test dedup_tests[] = {
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1), BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 8), BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 8),
BTF_FUNC_ENC(NAME_TBD, 12), /* [13] func */ BTF_FUNC_ENC(NAME_TBD, 12), /* [13] func */
BTF_TYPE_FLOAT_ENC(NAME_TBD, 2), /* [14] float */
BTF_END_RAW, BTF_END_RAW,
}, },
BTF_STR_SEC("\0A\0B\0C\0D\0E\0F\0G\0H\0I\0J\0K\0L\0M"), BTF_STR_SEC("\0A\0B\0C\0D\0E\0F\0G\0H\0I\0J\0K\0L\0M\0N"),
}, },
.opts = { .opts = {
.dont_resolve_fwds = false, .dont_resolve_fwds = false,
}, },
}, },
{ {
.descr = "dedup: no int duplicates", .descr = "dedup: no int/float duplicates",
.input = { .input = {
.raw_types = { .raw_types = {
BTF_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_SIGNED, 0, 32, 8), BTF_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_SIGNED, 0, 32, 8),
...@@ -6628,9 +6635,15 @@ const struct btf_dedup_test dedup_tests[] = { ...@@ -6628,9 +6635,15 @@ const struct btf_dedup_test dedup_tests[] = {
BTF_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_SIGNED, 0, 27, 8), BTF_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_SIGNED, 0, 27, 8),
/* different byte size */ /* different byte size */
BTF_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_SIGNED, 0, 32, 4), BTF_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_SIGNED, 0, 32, 4),
/* all allowed sizes */
BTF_TYPE_FLOAT_ENC(NAME_NTH(3), 2),
BTF_TYPE_FLOAT_ENC(NAME_NTH(3), 4),
BTF_TYPE_FLOAT_ENC(NAME_NTH(3), 8),
BTF_TYPE_FLOAT_ENC(NAME_NTH(3), 12),
BTF_TYPE_FLOAT_ENC(NAME_NTH(3), 16),
BTF_END_RAW, BTF_END_RAW,
}, },
BTF_STR_SEC("\0int\0some other int"), BTF_STR_SEC("\0int\0some other int\0float"),
}, },
.expect = { .expect = {
.raw_types = { .raw_types = {
...@@ -6646,9 +6659,15 @@ const struct btf_dedup_test dedup_tests[] = { ...@@ -6646,9 +6659,15 @@ const struct btf_dedup_test dedup_tests[] = {
BTF_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_SIGNED, 0, 27, 8), BTF_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_SIGNED, 0, 27, 8),
/* different byte size */ /* different byte size */
BTF_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_SIGNED, 0, 32, 4), BTF_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_SIGNED, 0, 32, 4),
/* all allowed sizes */
BTF_TYPE_FLOAT_ENC(NAME_NTH(3), 2),
BTF_TYPE_FLOAT_ENC(NAME_NTH(3), 4),
BTF_TYPE_FLOAT_ENC(NAME_NTH(3), 8),
BTF_TYPE_FLOAT_ENC(NAME_NTH(3), 12),
BTF_TYPE_FLOAT_ENC(NAME_NTH(3), 16),
BTF_END_RAW, BTF_END_RAW,
}, },
BTF_STR_SEC("\0int\0some other int"), BTF_STR_SEC("\0int\0some other int\0float"),
}, },
.opts = { .opts = {
.dont_resolve_fwds = false, .dont_resolve_fwds = false,
......
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