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Message-Id: <20241029002208.1947947-2-dolinux.peng@gmail.com>
Date: Tue, 29 Oct 2024 08:22:06 +0800
From: Donglin Peng <dolinux.peng@...il.com>
To: andrii@...nel.org,
eddyz87@...il.com
Cc: ast@...nel.org,
rostedt@...dmis.org,
mhiramat@...nel.org,
bpf@...r.kernel.org,
linux-trace-kernel@...r.kernel.org,
linux-kselftest@...r.kernel.org,
linux-kernel@...r.kernel.org,
Donglin Peng <dolinux.peng@...il.com>
Subject: [PATCH v4 1/3] libbpf: Sort btf_types in ascending order by name
To enhance the searching performance of btf_find_by_name_kind, we
can sort the btf_types in ascending order based on their names.
This allows us to implement a binary search method.
Co-developed-by: Eduard Zingerman <eddyz87@...il.com>
Signed-off-by: Eduard Zingerman <eddyz87@...il.com>
Signed-off-by: Donglin Peng <dolinux.peng@...il.com>
---
v4:
- Divide the patch into two parts: kernel and libbpf
- Use Eduard's code to sort btf_types in the btf__dedup function
- Correct some btf testcases due to modifications of the order of btf_types.
---
tools/lib/bpf/btf.c | 115 +++++--
tools/testing/selftests/bpf/prog_tests/btf.c | 296 +++++++++---------
.../bpf/prog_tests/btf_dedup_split.c | 64 ++--
3 files changed, 268 insertions(+), 207 deletions(-)
diff --git a/tools/lib/bpf/btf.c b/tools/lib/bpf/btf.c
index 3c131039c523..5290e9d59997 100644
--- a/tools/lib/bpf/btf.c
+++ b/tools/lib/bpf/btf.c
@@ -1,6 +1,9 @@
// SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
/* Copyright (c) 2018 Facebook */
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
#include <byteswap.h>
#include <endian.h>
#include <stdio.h>
@@ -4902,6 +4905,49 @@ static int btf_dedup_resolve_fwds(struct btf_dedup *d)
return err;
}
+/* compare btf types by name, consider named < anonymous */
+static int btf_compare_type_names(const void *a, const void *b, void *priv)
+{
+ struct btf *btf = (struct btf *)priv;
+ struct btf_type *ta = btf_type_by_id(btf, *(__u32 *)a);
+ struct btf_type *tb = btf_type_by_id(btf, *(__u32 *)b);
+ const char *na, *nb;
+
+ /* ta w/o name is greater than tb */
+ if (!ta->name_off && tb->name_off)
+ return 1;
+ /* tb w/o name is smaller than ta */
+ if (ta->name_off && !tb->name_off)
+ return -1;
+
+ na = btf__str_by_offset(btf, ta->name_off);
+ nb = btf__str_by_offset(btf, tb->name_off);
+ return strcmp(na, nb);
+}
+
+static __u32 *get_sorted_canon_types(struct btf_dedup *d, __u32 *cnt)
+{
+ int i, j, id, types_cnt = 0;
+ __u32 *sorted_ids;
+
+ for (i = 0, id = d->btf->start_id; i < d->btf->nr_types; i++, id++)
+ if (d->map[id] == id)
+ ++types_cnt;
+
+ sorted_ids = calloc(types_cnt, sizeof(*sorted_ids));
+ if (!sorted_ids)
+ return NULL;
+
+ for (j = 0, i = 0, id = d->btf->start_id; i < d->btf->nr_types; i++, id++)
+ if (d->map[id] == id)
+ sorted_ids[j++] = id;
+ qsort_r(sorted_ids, types_cnt, sizeof(*sorted_ids),
+ btf_compare_type_names, d->btf);
+ *cnt = types_cnt;
+
+ return sorted_ids;
+}
+
/*
* Compact types.
*
@@ -4915,11 +4961,11 @@ static int btf_dedup_resolve_fwds(struct btf_dedup *d)
*/
static int btf_dedup_compact_types(struct btf_dedup *d)
{
- __u32 *new_offs;
- __u32 next_type_id = d->btf->start_id;
+ __u32 canon_types_cnt = 0, canon_types_len = 0;
+ __u32 *new_offs = NULL, *canon_types = NULL;
const struct btf_type *t;
- void *p;
- int i, id, len;
+ void *p, *new_types = NULL;
+ int i, id, len, err;
/* we are going to reuse hypot_map to store compaction remapping */
d->hypot_map[0] = 0;
@@ -4929,36 +4975,61 @@ static int btf_dedup_compact_types(struct btf_dedup *d)
for (i = 0, id = d->btf->start_id; i < d->btf->nr_types; i++, id++)
d->hypot_map[id] = BTF_UNPROCESSED_ID;
- p = d->btf->types_data;
-
- for (i = 0, id = d->btf->start_id; i < d->btf->nr_types; i++, id++) {
- if (d->map[id] != id)
- continue;
+ canon_types = get_sorted_canon_types(d, &canon_types_cnt);
+ if (!canon_types) {
+ err = -ENOMEM;
+ goto out_err;
+ }
+ for (i = 0; i < canon_types_cnt; i++) {
+ id = canon_types[i];
t = btf__type_by_id(d->btf, id);
len = btf_type_size(t);
- if (len < 0)
- return len;
+ if (len < 0) {
+ err = len;
+ goto out_err;
+ }
+ canon_types_len += len;
+ }
+
+ new_offs = calloc(canon_types_cnt, sizeof(*new_offs));
+ new_types = calloc(canon_types_len, 1);
+ if (!new_types || !new_offs) {
+ err = -ENOMEM;
+ goto out_err;
+ }
- memmove(p, t, len);
- d->hypot_map[id] = next_type_id;
- d->btf->type_offs[next_type_id - d->btf->start_id] = p - d->btf->types_data;
+ p = new_types;
+
+ for (i = 0; i < canon_types_cnt; i++) {
+ id = canon_types[i];
+ t = btf__type_by_id(d->btf, id);
+ len = btf_type_size(t);
+ memcpy(p, t, len);
+ d->hypot_map[id] = d->btf->start_id + i;
+ new_offs[i] = p - new_types;
p += len;
- next_type_id++;
}
/* shrink struct btf's internal types index and update btf_header */
- d->btf->nr_types = next_type_id - d->btf->start_id;
- d->btf->type_offs_cap = d->btf->nr_types;
- d->btf->hdr->type_len = p - d->btf->types_data;
- new_offs = libbpf_reallocarray(d->btf->type_offs, d->btf->type_offs_cap,
- sizeof(*new_offs));
- if (d->btf->type_offs_cap && !new_offs)
- return -ENOMEM;
+ free(d->btf->types_data);
+ free(d->btf->type_offs);
+ d->btf->types_data = new_types;
d->btf->type_offs = new_offs;
+ d->btf->types_data_cap = canon_types_len;
+ d->btf->type_offs_cap = canon_types_cnt;
+ d->btf->nr_types = canon_types_cnt;
+ d->btf->hdr->type_len = canon_types_len;
d->btf->hdr->str_off = d->btf->hdr->type_len;
d->btf->raw_size = d->btf->hdr->hdr_len + d->btf->hdr->type_len + d->btf->hdr->str_len;
+ free(canon_types);
return 0;
+
+out_err:
+ free(canon_types);
+ free(new_types);
+ free(new_offs);
+ return err;
}
/*
diff --git a/tools/testing/selftests/bpf/prog_tests/btf.c b/tools/testing/selftests/bpf/prog_tests/btf.c
index e63d74ce046f..4dc1e2bfacbb 100644
--- a/tools/testing/selftests/bpf/prog_tests/btf.c
+++ b/tools/testing/selftests/bpf/prog_tests/btf.c
@@ -7025,26 +7025,26 @@ static struct btf_dedup_test dedup_tests[] = {
},
.expect = {
.raw_types = {
+ BTF_TYPE_FLOAT_ENC(NAME_NTH(7), 4), /* [1] */
/* int */
- BTF_TYPE_INT_ENC(NAME_NTH(5), BTF_INT_SIGNED, 0, 32, 4), /* [1] */
- /* int[16] */
- BTF_TYPE_ARRAY_ENC(1, 1, 16), /* [2] */
+ BTF_TYPE_INT_ENC(NAME_NTH(5), BTF_INT_SIGNED, 0, 32, 4), /* [2] */
/* struct s { */
BTF_STRUCT_ENC(NAME_NTH(8), 5, 88), /* [3] */
- 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(2), 2, 128), /* int b[16]; */
- BTF_MEMBER_ENC(NAME_NTH(3), 1, 640), /* int c; */
- BTF_MEMBER_ENC(NAME_NTH(4), 9, 672), /* float d; */
+ BTF_MEMBER_ENC(NAME_NTH(7), 7, 0), /* struct s *next; */
+ BTF_MEMBER_ENC(NAME_NTH(1), 8, 64), /* const int *a; */
+ BTF_MEMBER_ENC(NAME_NTH(2), 6, 128), /* int b[16]; */
+ BTF_MEMBER_ENC(NAME_NTH(3), 2, 640), /* int c; */
+ BTF_MEMBER_ENC(NAME_NTH(4), 1, 672), /* float d; */
+ BTF_DECL_TAG_ENC(NAME_NTH(2), 3, -1), /* [4] */
+ BTF_DECL_TAG_ENC(NAME_NTH(2), 3, 1), /* [5] */
+ /* int[16] */
+ BTF_TYPE_ARRAY_ENC(1, 2, 16), /* [6] */
/* ptr -> [3] struct s */
- BTF_PTR_ENC(3), /* [4] */
+ BTF_PTR_ENC(3), /* [7] */
/* ptr -> [6] const int */
- BTF_PTR_ENC(6), /* [5] */
+ BTF_PTR_ENC(9), /* [8] */
/* const -> [1] int */
- BTF_CONST_ENC(1), /* [6] */
- BTF_DECL_TAG_ENC(NAME_NTH(2), 3, -1), /* [7] */
- BTF_DECL_TAG_ENC(NAME_NTH(2), 3, 1), /* [8] */
- BTF_TYPE_FLOAT_ENC(NAME_NTH(7), 4), /* [9] */
+ BTF_CONST_ENC(2), /* [9] */
BTF_END_RAW,
},
BTF_STR_SEC("\0a\0b\0c\0d\0int\0float\0next\0s"),
@@ -7082,10 +7082,10 @@ static struct btf_dedup_test dedup_tests[] = {
},
.expect = {
.raw_types = {
- BTF_PTR_ENC(3), /* [1] ptr -> [3] */
- BTF_STRUCT_ENC(NAME_TBD, 1, 8), /* [2] struct s */
- BTF_MEMBER_ENC(NAME_TBD, 1, 0),
- BTF_STRUCT_ENC(NAME_NTH(2), 0, 0), /* [3] struct x */
+ BTF_STRUCT_ENC(NAME_TBD, 1, 8), /* [1] struct s */
+ BTF_MEMBER_ENC(NAME_TBD, 3, 0),
+ BTF_STRUCT_ENC(NAME_NTH(2), 0, 0), /* [2] struct x */
+ BTF_PTR_ENC(2), /* [3] ptr -> [3] */
BTF_END_RAW,
},
BTF_STR_SEC("\0s\0x"),
@@ -7123,15 +7123,13 @@ static struct btf_dedup_test dedup_tests[] = {
},
.expect = {
.raw_types = {
- /* CU 1 */
- BTF_STRUCT_ENC(0, 0, 1), /* [1] struct {} */
- BTF_PTR_ENC(1), /* [2] ptr -> [1] */
- BTF_STRUCT_ENC(NAME_NTH(1), 1, 8), /* [3] struct s */
- BTF_MEMBER_ENC(NAME_NTH(2), 2, 0),
- /* CU 2 */
- BTF_PTR_ENC(0), /* [4] ptr -> void */
- BTF_STRUCT_ENC(NAME_NTH(1), 1, 8), /* [5] struct s */
+ BTF_STRUCT_ENC(NAME_NTH(1), 1, 8), /* [1] struct s */
BTF_MEMBER_ENC(NAME_NTH(2), 4, 0),
+ BTF_STRUCT_ENC(NAME_NTH(1), 1, 8), /* [2] struct s */
+ BTF_MEMBER_ENC(NAME_NTH(2), 5, 0),
+ BTF_STRUCT_ENC(0, 0, 1), /* [3] struct {} */
+ BTF_PTR_ENC(3), /* [5] ptr -> [1] */
+ BTF_PTR_ENC(0), /* [4] ptr -> void */
BTF_END_RAW,
},
BTF_STR_SEC("\0s\0x"),
@@ -7182,28 +7180,28 @@ static struct btf_dedup_test dedup_tests[] = {
BTF_ENUM_ENC(NAME_TBD, 0),
BTF_ENUM_ENC(NAME_TBD, 1),
BTF_FWD_ENC(NAME_TBD, 1 /* union kind_flag */), /* [3] fwd */
- BTF_TYPE_ARRAY_ENC(2, 1, 7), /* [4] array */
- BTF_STRUCT_ENC(NAME_TBD, 1, 4), /* [5] struct */
+ BTF_STRUCT_ENC(NAME_TBD, 1, 4), /* [4] struct */
BTF_MEMBER_ENC(NAME_TBD, 1, 0),
- BTF_UNION_ENC(NAME_TBD, 1, 4), /* [6] union */
+ BTF_UNION_ENC(NAME_TBD, 1, 4), /* [5] union */
BTF_MEMBER_ENC(NAME_TBD, 1, 0),
- BTF_TYPEDEF_ENC(NAME_TBD, 1), /* [7] typedef */
- BTF_PTR_ENC(0), /* [8] ptr */
- BTF_CONST_ENC(8), /* [9] const */
- BTF_VOLATILE_ENC(8), /* [10] volatile */
- BTF_RESTRICT_ENC(8), /* [11] restrict */
- BTF_FUNC_PROTO_ENC(1, 2), /* [12] func_proto */
- BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
- BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 18),
- BTF_FUNC_ENC(NAME_TBD, 12), /* [13] func */
- BTF_TYPE_FLOAT_ENC(NAME_TBD, 2), /* [14] float */
- BTF_DECL_TAG_ENC(NAME_TBD, 13, -1), /* [15] decl_tag */
- BTF_DECL_TAG_ENC(NAME_TBD, 13, 1), /* [16] decl_tag */
- BTF_DECL_TAG_ENC(NAME_TBD, 7, -1), /* [17] decl_tag */
- BTF_TYPE_TAG_ENC(NAME_TBD, 8), /* [18] type_tag */
- BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_ENUM64, 0, 2), 8), /* [19] enum64 */
+ BTF_TYPEDEF_ENC(NAME_TBD, 1), /* [6] typedef */
+ BTF_FUNC_ENC(NAME_TBD, 19), /* [7] func */
+ BTF_TYPE_FLOAT_ENC(NAME_TBD, 2), /* [8] float */
+ BTF_DECL_TAG_ENC(NAME_TBD, 7, -1), /* [9] decl_tag */
+ BTF_DECL_TAG_ENC(NAME_TBD, 7, 1), /* [10] decl_tag */
+ BTF_DECL_TAG_ENC(NAME_TBD, 6, -1), /* [11] decl_tag */
+ BTF_TYPE_TAG_ENC(NAME_TBD, 15), /* [12] type_tag */
+ BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_ENUM64, 0, 2), 8), /* [13] enum64 */
BTF_ENUM64_ENC(NAME_TBD, 0, 0),
BTF_ENUM64_ENC(NAME_TBD, 1, 1),
+ BTF_TYPE_ARRAY_ENC(2, 2, 7), /* [14] array */
+ BTF_PTR_ENC(0), /* [15] ptr */
+ BTF_CONST_ENC(15), /* [16] const */
+ BTF_VOLATILE_ENC(15), /* [17] volatile */
+ BTF_RESTRICT_ENC(15), /* [18] restrict */
+ BTF_FUNC_PROTO_ENC(1, 2), /* [19] func_proto */
+ BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
+ BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 12),
BTF_END_RAW,
},
BTF_STR_SEC("\0A\0B\0C\0D\0E\0F\0G\0H\0I\0J\0K\0L\0M\0N\0O\0P\0Q\0R\0S\0T\0U"),
@@ -7237,9 +7235,14 @@ static struct btf_dedup_test dedup_tests[] = {
},
.expect = {
.raw_types = {
+ /* 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_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_SIGNED, 0, 32, 8),
- /* different name */
- BTF_TYPE_INT_ENC(NAME_NTH(2), BTF_INT_SIGNED, 0, 32, 8),
/* different encoding */
BTF_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_CHAR, 0, 32, 8),
BTF_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_BOOL, 0, 32, 8),
@@ -7249,12 +7252,8 @@ static struct btf_dedup_test dedup_tests[] = {
BTF_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_SIGNED, 0, 27, 8),
/* different byte size */
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),
+ /* different name */
+ BTF_TYPE_INT_ENC(NAME_NTH(2), BTF_INT_SIGNED, 0, 32, 8),
BTF_END_RAW,
},
BTF_STR_SEC("\0int\0some other int\0float"),
@@ -7323,18 +7322,18 @@ static struct btf_dedup_test dedup_tests[] = {
},
.expect = {
.raw_types = {
- /* int */
- BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
- /* static int t */
- BTF_VAR_ENC(NAME_NTH(2), 1, 0), /* [2] */
- /* .bss section */ /* [3] */
+ /* .bss section */ /* [1] */
BTF_TYPE_ENC(NAME_NTH(1), BTF_INFO_ENC(BTF_KIND_DATASEC, 0, 1), 4),
- BTF_VAR_SECINFO_ENC(2, 0, 4),
- /* another static int t */
- BTF_VAR_ENC(NAME_NTH(2), 1, 0), /* [4] */
- /* another .bss section */ /* [5] */
+ BTF_VAR_SECINFO_ENC(3, 0, 4),
+ /* another .bss section */ /* [2] */
BTF_TYPE_ENC(NAME_NTH(1), BTF_INFO_ENC(BTF_KIND_DATASEC, 0, 1), 4),
BTF_VAR_SECINFO_ENC(4, 0, 4),
+ /* static int t */
+ BTF_VAR_ENC(NAME_NTH(2), 5, 0), /* [3] */
+ /* another static int t */
+ BTF_VAR_ENC(NAME_NTH(2), 5, 0), /* [4] */
+ /* int */
+ BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [5] */
BTF_END_RAW,
},
BTF_STR_SEC("\0.bss\0t"),
@@ -7371,15 +7370,15 @@ static struct btf_dedup_test dedup_tests[] = {
},
.expect = {
.raw_types = {
- BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
- BTF_VAR_ENC(NAME_NTH(1), 1, 0), /* [2] */
- BTF_FUNC_PROTO_ENC(0, 2), /* [3] */
- BTF_FUNC_PROTO_ARG_ENC(NAME_NTH(2), 1),
- BTF_FUNC_PROTO_ARG_ENC(NAME_NTH(3), 1),
- BTF_FUNC_ENC(NAME_NTH(4), 3), /* [4] */
- BTF_DECL_TAG_ENC(NAME_NTH(5), 2, -1), /* [5] */
- BTF_DECL_TAG_ENC(NAME_NTH(5), 4, -1), /* [6] */
- BTF_DECL_TAG_ENC(NAME_NTH(5), 4, 1), /* [7] */
+ BTF_FUNC_ENC(NAME_NTH(4), 7), /* [1] */
+ BTF_VAR_ENC(NAME_NTH(1), 6, 0), /* [2] */
+ BTF_DECL_TAG_ENC(NAME_NTH(5), 2, -1), /* [3] */
+ BTF_DECL_TAG_ENC(NAME_NTH(5), 1, -1), /* [4] */
+ BTF_DECL_TAG_ENC(NAME_NTH(5), 1, 1), /* [5] */
+ BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [6] */
+ BTF_FUNC_PROTO_ENC(0, 2), /* [7] */
+ BTF_FUNC_PROTO_ARG_ENC(NAME_NTH(2), 6),
+ BTF_FUNC_PROTO_ARG_ENC(NAME_NTH(3), 6),
BTF_END_RAW,
},
BTF_STR_SEC("\0t\0a1\0a2\0f\0tag"),
@@ -7419,17 +7418,17 @@ static struct btf_dedup_test dedup_tests[] = {
},
.expect = {
.raw_types = {
- BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
- BTF_FUNC_PROTO_ENC(0, 2), /* [2] */
- BTF_FUNC_PROTO_ARG_ENC(NAME_NTH(1), 1),
- BTF_FUNC_PROTO_ARG_ENC(NAME_NTH(2), 1),
- BTF_FUNC_ENC(NAME_NTH(3), 2), /* [3] */
- BTF_DECL_TAG_ENC(NAME_NTH(4), 3, -1), /* [4] */
- BTF_DECL_TAG_ENC(NAME_NTH(5), 3, -1), /* [5] */
- BTF_DECL_TAG_ENC(NAME_NTH(6), 3, -1), /* [6] */
- BTF_DECL_TAG_ENC(NAME_NTH(4), 3, 1), /* [7] */
- BTF_DECL_TAG_ENC(NAME_NTH(5), 3, 1), /* [8] */
- BTF_DECL_TAG_ENC(NAME_NTH(6), 3, 1), /* [9] */
+ BTF_FUNC_ENC(NAME_NTH(3), 9), /* [1] */
+ BTF_DECL_TAG_ENC(NAME_NTH(4), 1, -1), /* [2] */
+ BTF_DECL_TAG_ENC(NAME_NTH(4), 1, 1), /* [3] */
+ BTF_DECL_TAG_ENC(NAME_NTH(5), 1, -1), /* [4] */
+ BTF_DECL_TAG_ENC(NAME_NTH(5), 1, 1), /* [5] */
+ BTF_DECL_TAG_ENC(NAME_NTH(6), 1, -1), /* [6] */
+ BTF_DECL_TAG_ENC(NAME_NTH(6), 1, 1), /* [7] */
+ BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [8] */
+ BTF_FUNC_PROTO_ENC(0, 2), /* [9] */
+ BTF_FUNC_PROTO_ARG_ENC(NAME_NTH(1), 8),
+ BTF_FUNC_PROTO_ARG_ENC(NAME_NTH(2), 8),
BTF_END_RAW,
},
BTF_STR_SEC("\0a1\0a2\0f\0tag1\0tag2\0tag3"),
@@ -7465,16 +7464,16 @@ static struct btf_dedup_test dedup_tests[] = {
},
.expect = {
.raw_types = {
- BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
- BTF_STRUCT_ENC(NAME_NTH(1), 2, 8), /* [2] */
- BTF_MEMBER_ENC(NAME_NTH(2), 1, 0),
- BTF_MEMBER_ENC(NAME_NTH(3), 1, 32),
- BTF_DECL_TAG_ENC(NAME_NTH(4), 2, -1), /* [3] */
- BTF_DECL_TAG_ENC(NAME_NTH(5), 2, -1), /* [4] */
- BTF_DECL_TAG_ENC(NAME_NTH(6), 2, -1), /* [5] */
- BTF_DECL_TAG_ENC(NAME_NTH(4), 2, 1), /* [6] */
- BTF_DECL_TAG_ENC(NAME_NTH(5), 2, 1), /* [7] */
- BTF_DECL_TAG_ENC(NAME_NTH(6), 2, 1), /* [8] */
+ BTF_STRUCT_ENC(NAME_NTH(1), 2, 8), /* [1] */
+ BTF_MEMBER_ENC(NAME_NTH(2), 8, 0),
+ BTF_MEMBER_ENC(NAME_NTH(3), 8, 32),
+ BTF_DECL_TAG_ENC(NAME_NTH(4), 1, -1), /* [2] */
+ BTF_DECL_TAG_ENC(NAME_NTH(4), 1, 1), /* [3] */
+ BTF_DECL_TAG_ENC(NAME_NTH(5), 1, -1), /* [4] */
+ BTF_DECL_TAG_ENC(NAME_NTH(5), 1, 1), /* [5] */
+ BTF_DECL_TAG_ENC(NAME_NTH(6), 1, -1), /* [6] */
+ BTF_DECL_TAG_ENC(NAME_NTH(6), 1, 1), /* [7] */
+ BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [8] */
BTF_END_RAW,
},
BTF_STR_SEC("\0t\0m1\0m2\0tag1\0tag2\0tag3"),
@@ -7500,11 +7499,11 @@ static struct btf_dedup_test dedup_tests[] = {
},
.expect = {
.raw_types = {
- BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
- BTF_TYPEDEF_ENC(NAME_NTH(1), 1), /* [2] */
- BTF_DECL_TAG_ENC(NAME_NTH(2), 2, -1), /* [3] */
- BTF_DECL_TAG_ENC(NAME_NTH(3), 2, -1), /* [4] */
- BTF_DECL_TAG_ENC(NAME_NTH(4), 2, -1), /* [5] */
+ BTF_TYPEDEF_ENC(NAME_NTH(1), 5), /* [1] */
+ BTF_DECL_TAG_ENC(NAME_NTH(2), 1, -1), /* [2] */
+ BTF_DECL_TAG_ENC(NAME_NTH(3), 1, -1), /* [3] */
+ BTF_DECL_TAG_ENC(NAME_NTH(4), 1, -1), /* [4] */
+ BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [5] */
BTF_END_RAW,
},
BTF_STR_SEC("\0t\0tag1\0tag2\0tag3"),
@@ -7533,12 +7532,12 @@ static struct btf_dedup_test dedup_tests[] = {
.expect = {
.raw_types = {
/* ptr -> tag2 -> tag1 -> int */
- BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
- BTF_TYPE_TAG_ENC(NAME_NTH(1), 1), /* [2] */
- BTF_TYPE_TAG_ENC(NAME_NTH(2), 2), /* [3] */
- BTF_PTR_ENC(3), /* [4] */
+ BTF_TYPE_TAG_ENC(NAME_NTH(1), 3), /* [1] */
+ BTF_TYPE_TAG_ENC(NAME_NTH(2), 1), /* [2] */
+ BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [3] */
+ BTF_PTR_ENC(2), /* [4] */
/* ptr -> tag1 -> int */
- BTF_PTR_ENC(2), /* [5] */
+ BTF_PTR_ENC(1), /* [5] */
BTF_END_RAW,
},
BTF_STR_SEC("\0tag1\0tag2"),
@@ -7563,13 +7562,13 @@ static struct btf_dedup_test dedup_tests[] = {
.expect = {
.raw_types = {
/* ptr -> tag2 -> tag1 -> int */
- BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
- BTF_TYPE_TAG_ENC(NAME_NTH(1), 1), /* [2] */
- BTF_TYPE_TAG_ENC(NAME_NTH(2), 2), /* [3] */
- BTF_PTR_ENC(3), /* [4] */
+ BTF_TYPE_TAG_ENC(NAME_NTH(1), 4), /* [1] */
+ BTF_TYPE_TAG_ENC(NAME_NTH(2), 1), /* [2] */
/* ptr -> tag2 -> int */
- BTF_TYPE_TAG_ENC(NAME_NTH(2), 1), /* [5] */
- BTF_PTR_ENC(5), /* [6] */
+ BTF_TYPE_TAG_ENC(NAME_NTH(2), 4), /* [3] */
+ BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [4] */
+ BTF_PTR_ENC(2), /* [5] */
+ BTF_PTR_ENC(3), /* [6] */
BTF_END_RAW,
},
BTF_STR_SEC("\0tag1\0tag2"),
@@ -7594,15 +7593,13 @@ static struct btf_dedup_test dedup_tests[] = {
},
.expect = {
.raw_types = {
- /* ptr -> tag2 -> tag1 -> int */
- BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
- BTF_TYPE_TAG_ENC(NAME_NTH(1), 1), /* [2] */
- BTF_TYPE_TAG_ENC(NAME_NTH(2), 2), /* [3] */
- BTF_PTR_ENC(3), /* [4] */
- /* ptr -> tag1 -> tag2 -> int */
- BTF_TYPE_TAG_ENC(NAME_NTH(2), 1), /* [5] */
- BTF_TYPE_TAG_ENC(NAME_NTH(1), 5), /* [6] */
- BTF_PTR_ENC(6), /* [7] */
+ BTF_TYPE_TAG_ENC(NAME_NTH(1), 5), /* [1] */
+ BTF_TYPE_TAG_ENC(NAME_NTH(1), 4), /* [2] */
+ BTF_TYPE_TAG_ENC(NAME_NTH(2), 1), /* [3] */
+ BTF_TYPE_TAG_ENC(NAME_NTH(2), 5), /* [4] */
+ BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [5] */
+ BTF_PTR_ENC(3), /* [6] */
+ BTF_PTR_ENC(2), /* [7] */
BTF_END_RAW,
},
BTF_STR_SEC("\0tag1\0tag2"),
@@ -7626,14 +7623,12 @@ static struct btf_dedup_test dedup_tests[] = {
},
.expect = {
.raw_types = {
- /* ptr -> tag1 -> int */
- BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
- BTF_TYPE_TAG_ENC(NAME_NTH(1), 1), /* [2] */
- BTF_PTR_ENC(2), /* [3] */
- /* ptr -> tag1 -> long */
- BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 64, 8), /* [4] */
- BTF_TYPE_TAG_ENC(NAME_NTH(1), 4), /* [5] */
- BTF_PTR_ENC(5), /* [6] */
+ BTF_TYPE_TAG_ENC(NAME_NTH(1), 3), /* [1] */
+ BTF_TYPE_TAG_ENC(NAME_NTH(1), 5), /* [2] */
+ BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [3] */
+ BTF_PTR_ENC(1), /* [4] */
+ BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 64, 8), /* [5] */
+ BTF_PTR_ENC(2), /* [6] */
BTF_END_RAW,
},
BTF_STR_SEC("\0tag1"),
@@ -7656,10 +7651,10 @@ static struct btf_dedup_test dedup_tests[] = {
},
.expect = {
.raw_types = {
- BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
- BTF_TYPE_TAG_ENC(NAME_NTH(1), 1), /* [2] */
- BTF_TYPE_ENC(NAME_NTH(2), BTF_INFO_ENC(BTF_KIND_STRUCT, 1, 1), 4), /* [3] */
+ BTF_TYPE_ENC(NAME_NTH(2), BTF_INFO_ENC(BTF_KIND_STRUCT, 1, 1), 4), /* [1] */
BTF_MEMBER_ENC(NAME_NTH(3), 2, BTF_MEMBER_OFFSET(0, 0)),
+ BTF_TYPE_TAG_ENC(NAME_NTH(1), 3), /* [2] */
+ BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [3] */
BTF_END_RAW,
},
BTF_STR_SEC("\0tag1\0t\0m"),
@@ -7861,10 +7856,10 @@ static struct btf_dedup_test dedup_tests[] = {
.expect = {
.raw_types = {
BTF_STRUCT_ENC(NAME_NTH(1), 1, 4), /* [1] */
- BTF_MEMBER_ENC(NAME_NTH(2), 2, 0),
- BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [2] */
- BTF_PTR_ENC(1), /* [3] */
- BTF_TYPEDEF_ENC(NAME_NTH(3), 3), /* [4] */
+ BTF_MEMBER_ENC(NAME_NTH(2), 3, 0),
+ BTF_TYPEDEF_ENC(NAME_NTH(3), 4), /* [2] */
+ BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [3] */
+ BTF_PTR_ENC(1), /* [4] */
BTF_END_RAW,
},
BTF_STR_SEC("\0foo\0x\0foo_ptr"),
@@ -7901,10 +7896,10 @@ static struct btf_dedup_test dedup_tests[] = {
.expect = {
.raw_types = {
BTF_UNION_ENC(NAME_NTH(1), 1, 4), /* [1] */
- BTF_MEMBER_ENC(NAME_NTH(2), 2, 0),
- BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [2] */
- BTF_PTR_ENC(1), /* [3] */
- BTF_TYPEDEF_ENC(NAME_NTH(3), 3), /* [4] */
+ BTF_MEMBER_ENC(NAME_NTH(2), 3, 0),
+ BTF_TYPEDEF_ENC(NAME_NTH(3), 4), /* [2] */
+ BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [3] */
+ BTF_PTR_ENC(1), /* [4] */
BTF_END_RAW,
},
BTF_STR_SEC("\0foo\0x\0foo_ptr"),
@@ -7940,14 +7935,12 @@ static struct btf_dedup_test dedup_tests[] = {
},
.expect = {
.raw_types = {
- /* CU 1 */
BTF_STRUCT_ENC(NAME_NTH(1), 1, 4), /* [1] */
- BTF_MEMBER_ENC(NAME_NTH(2), 2, 0),
- BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [2] */
- /* CU 2 */
- BTF_FWD_ENC(NAME_NTH(3), 1), /* [3] */
- BTF_PTR_ENC(3), /* [4] */
- BTF_TYPEDEF_ENC(NAME_NTH(3), 4), /* [5] */
+ BTF_MEMBER_ENC(NAME_NTH(2), 4, 0),
+ BTF_FWD_ENC(NAME_NTH(3), 1), /* [2] */
+ BTF_TYPEDEF_ENC(NAME_NTH(3), 5), /* [3] */
+ BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [4] */
+ BTF_PTR_ENC(2), /* [5] */
BTF_END_RAW,
},
BTF_STR_SEC("\0foo\0x\0foo_ptr"),
@@ -7990,18 +7983,15 @@ static struct btf_dedup_test dedup_tests[] = {
},
.expect = {
.raw_types = {
- /* CU 1 */
BTF_STRUCT_ENC(NAME_NTH(1), 1, 4), /* [1] */
- BTF_MEMBER_ENC(NAME_NTH(2), 2, 0),
- BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [2] */
- /* CU 2 */
- BTF_FWD_ENC(NAME_NTH(1), 0), /* [3] */
- BTF_PTR_ENC(3), /* [4] */
- BTF_TYPEDEF_ENC(NAME_NTH(4), 4), /* [5] */
- /* CU 3 */
- BTF_STRUCT_ENC(NAME_NTH(1), 2, 8), /* [6] */
- BTF_MEMBER_ENC(NAME_NTH(2), 2, 0),
- BTF_MEMBER_ENC(NAME_NTH(3), 2, 0),
+ BTF_MEMBER_ENC(NAME_NTH(2), 5, 0),
+ BTF_FWD_ENC(NAME_NTH(1), 0), /* [2] */
+ BTF_STRUCT_ENC(NAME_NTH(1), 2, 8), /* [3] */
+ BTF_MEMBER_ENC(NAME_NTH(2), 5, 0),
+ BTF_MEMBER_ENC(NAME_NTH(3), 5, 0),
+ BTF_TYPEDEF_ENC(NAME_NTH(4), 6), /* [4] */
+ BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [5] */
+ BTF_PTR_ENC(2), /* [6] */
BTF_END_RAW,
},
BTF_STR_SEC("\0foo\0x\0y\0foo_ptr"),
diff --git a/tools/testing/selftests/bpf/prog_tests/btf_dedup_split.c b/tools/testing/selftests/bpf/prog_tests/btf_dedup_split.c
index d9024c7a892a..e50c290b2d8c 100644
--- a/tools/testing/selftests/bpf/prog_tests/btf_dedup_split.c
+++ b/tools/testing/selftests/bpf/prog_tests/btf_dedup_split.c
@@ -311,18 +311,18 @@ static void test_split_struct_duped() {
"[5] STRUCT 's1' size=16 vlen=2\n"
"\t'f1' type_id=2 bits_offset=0\n"
"\t'f2' type_id=4 bits_offset=64",
- "[6] PTR '(anon)' type_id=8",
- "[7] PTR '(anon)' type_id=9",
- "[8] STRUCT 's1' size=16 vlen=2\n"
- "\t'f1' type_id=6 bits_offset=0\n"
- "\t'f2' type_id=7 bits_offset=64",
- "[9] STRUCT 's2' size=40 vlen=4\n"
- "\t'f1' type_id=6 bits_offset=0\n"
- "\t'f2' type_id=7 bits_offset=64\n"
+ "[6] STRUCT 's1' size=16 vlen=2\n"
+ "\t'f1' type_id=9 bits_offset=0\n"
+ "\t'f2' type_id=10 bits_offset=64",
+ "[7] STRUCT 's2' size=40 vlen=4\n"
+ "\t'f1' type_id=9 bits_offset=0\n"
+ "\t'f2' type_id=10 bits_offset=64\n"
"\t'f3' type_id=1 bits_offset=128\n"
- "\t'f4' type_id=8 bits_offset=192",
- "[10] STRUCT 's3' size=8 vlen=1\n"
- "\t'f1' type_id=7 bits_offset=0");
+ "\t'f4' type_id=6 bits_offset=192",
+ "[8] STRUCT 's3' size=8 vlen=1\n"
+ "\t'f1' type_id=10 bits_offset=0",
+ "[9] PTR '(anon)' type_id=6",
+ "[10] PTR '(anon)' type_id=7");
cleanup:
btf__free(btf2);
@@ -385,13 +385,13 @@ static void test_split_dup_struct_in_cu()
VALIDATE_RAW_BTF(
btf1,
- "[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED",
- "[2] STRUCT 's' size=8 vlen=2\n"
- "\t'a' type_id=3 bits_offset=0\n"
- "\t'b' type_id=3 bits_offset=0",
- "[3] STRUCT '(anon)' size=8 vlen=2\n"
- "\t'f1' type_id=1 bits_offset=0\n"
- "\t'f2' type_id=1 bits_offset=32");
+ "[1] STRUCT '(anon)' size=8 vlen=2\n"
+ "\t'f1' type_id=2 bits_offset=0\n"
+ "\t'f2' type_id=2 bits_offset=32",
+ "[2] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED",
+ "[3] STRUCT 's' size=8 vlen=2\n"
+ "\t'a' type_id=1 bits_offset=0\n"
+ "\t'b' type_id=1 bits_offset=0");
/* and add the same data on top of it */
btf2 = btf__new_empty_split(btf1);
@@ -402,13 +402,13 @@ static void test_split_dup_struct_in_cu()
VALIDATE_RAW_BTF(
btf2,
- "[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED",
- "[2] STRUCT 's' size=8 vlen=2\n"
- "\t'a' type_id=3 bits_offset=0\n"
- "\t'b' type_id=3 bits_offset=0",
- "[3] STRUCT '(anon)' size=8 vlen=2\n"
- "\t'f1' type_id=1 bits_offset=0\n"
- "\t'f2' type_id=1 bits_offset=32",
+ "[1] STRUCT '(anon)' size=8 vlen=2\n"
+ "\t'f1' type_id=2 bits_offset=0\n"
+ "\t'f2' type_id=2 bits_offset=32",
+ "[2] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED",
+ "[3] STRUCT 's' size=8 vlen=2\n"
+ "\t'a' type_id=1 bits_offset=0\n"
+ "\t'b' type_id=1 bits_offset=0",
"[4] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED",
"[5] STRUCT 's' size=8 vlen=2\n"
"\t'a' type_id=6 bits_offset=0\n"
@@ -427,13 +427,13 @@ static void test_split_dup_struct_in_cu()
/* after dedup it should match the original data */
VALIDATE_RAW_BTF(
btf2,
- "[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED",
- "[2] STRUCT 's' size=8 vlen=2\n"
- "\t'a' type_id=3 bits_offset=0\n"
- "\t'b' type_id=3 bits_offset=0",
- "[3] STRUCT '(anon)' size=8 vlen=2\n"
- "\t'f1' type_id=1 bits_offset=0\n"
- "\t'f2' type_id=1 bits_offset=32");
+ "[1] STRUCT '(anon)' size=8 vlen=2\n"
+ "\t'f1' type_id=2 bits_offset=0\n"
+ "\t'f2' type_id=2 bits_offset=32",
+ "[2] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED",
+ "[3] STRUCT 's' size=8 vlen=2\n"
+ "\t'a' type_id=1 bits_offset=0\n"
+ "\t'b' type_id=1 bits_offset=0");
cleanup:
btf__free(btf2);
--
2.34.1
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