From: Yonghong Song <yhs@fb.com>
To: <bpf@vger.kernel.org>
Cc: Alexei Starovoitov <ast@kernel.org>,
Andrii Nakryiko <andrii@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>, <kernel-team@fb.com>
Subject: [PATCH bpf-next v3 03/11] libbpf: rename btf_{hash,equal}_int to btf_{hash,equal}_int_tag
Date: Tue, 14 Sep 2021 15:30:20 -0700 [thread overview]
Message-ID: <20210914223020.245829-1-yhs@fb.com> (raw)
In-Reply-To: <20210914223004.244411-1-yhs@fb.com>
This patch renames functions btf_{hash,equal}_int() to
btf_{hash,equal}_int_tag() so they can be reused for
BTF_KIND_TAG support. There is no functionality change for
this patch.
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Yonghong Song <yhs@fb.com>
---
tools/lib/bpf/btf.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
diff --git a/tools/lib/bpf/btf.c b/tools/lib/bpf/btf.c
index 77dc24d58302..7cb6ebf1be37 100644
--- a/tools/lib/bpf/btf.c
+++ b/tools/lib/bpf/btf.c
@@ -3256,8 +3256,8 @@ static bool btf_equal_common(struct btf_type *t1, struct btf_type *t2)
t1->size == t2->size;
}
-/* Calculate type signature hash of INT. */
-static long btf_hash_int(struct btf_type *t)
+/* Calculate type signature hash of INT or TAG. */
+static long btf_hash_int_tag(struct btf_type *t)
{
__u32 info = *(__u32 *)(t + 1);
long h;
@@ -3267,8 +3267,8 @@ static long btf_hash_int(struct btf_type *t)
return h;
}
-/* Check structural equality of two INTs. */
-static bool btf_equal_int(struct btf_type *t1, struct btf_type *t2)
+/* Check structural equality of two INTs or TAGs. */
+static bool btf_equal_int_tag(struct btf_type *t1, struct btf_type *t2)
{
__u32 info1, info2;
@@ -3535,7 +3535,7 @@ static int btf_dedup_prep(struct btf_dedup *d)
h = btf_hash_common(t);
break;
case BTF_KIND_INT:
- h = btf_hash_int(t);
+ h = btf_hash_int_tag(t);
break;
case BTF_KIND_ENUM:
h = btf_hash_enum(t);
@@ -3593,11 +3593,11 @@ static int btf_dedup_prim_type(struct btf_dedup *d, __u32 type_id)
return 0;
case BTF_KIND_INT:
- h = btf_hash_int(t);
+ h = btf_hash_int_tag(t);
for_each_dedup_cand(d, hash_entry, h) {
cand_id = (__u32)(long)hash_entry->value;
cand = btf_type_by_id(d->btf, cand_id);
- if (btf_equal_int(t, cand)) {
+ if (btf_equal_int_tag(t, cand)) {
new_id = cand_id;
break;
}
@@ -3881,7 +3881,7 @@ static int btf_dedup_is_equiv(struct btf_dedup *d, __u32 cand_id,
switch (cand_kind) {
case BTF_KIND_INT:
- return btf_equal_int(cand_type, canon_type);
+ return btf_equal_int_tag(cand_type, canon_type);
case BTF_KIND_ENUM:
if (d->opts.dont_resolve_fwds)
--
2.30.2
next prev parent reply other threads:[~2021-09-14 22:30 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-14 22:30 [PATCH bpf-next v3 00/11] bpf: add support for new btf kind BTF_KIND_TAG Yonghong Song
2021-09-14 22:30 ` [PATCH bpf-next v3 01/11] btf: change BTF_KIND_* macros to enums Yonghong Song
2021-09-15 0:13 ` Andrii Nakryiko
2021-09-14 22:30 ` [PATCH bpf-next v3 02/11] bpf: support for new btf kind BTF_KIND_TAG Yonghong Song
2021-09-15 0:15 ` Andrii Nakryiko
2021-09-14 22:30 ` Yonghong Song [this message]
2021-09-14 22:30 ` [PATCH bpf-next v3 04/11] libbpf: add support for BTF_KIND_TAG Yonghong Song
2021-09-15 0:18 ` Andrii Nakryiko
2021-09-14 22:30 ` [PATCH bpf-next v3 05/11] bpftool: " Yonghong Song
2021-09-14 22:30 ` [PATCH bpf-next v3 06/11] selftests/bpf: test libbpf API function btf__add_tag() Yonghong Song
2021-09-14 22:30 ` [PATCH bpf-next v3 07/11] selftests/bpf: change NAME_NTH/IS_NAME_NTH for BTF_KIND_TAG format Yonghong Song
2021-09-14 22:30 ` [PATCH bpf-next v3 08/11] selftests/bpf: add BTF_KIND_TAG unit tests Yonghong Song
2021-09-15 0:19 ` Andrii Nakryiko
2021-09-14 22:30 ` [PATCH bpf-next v3 09/11] selftests/bpf: test BTF_KIND_TAG for deduplication Yonghong Song
2021-09-15 0:21 ` Andrii Nakryiko
2021-09-14 22:30 ` [PATCH bpf-next v3 10/11] selftests/bpf: add a test with a bpf program with btf_tag attributes Yonghong Song
2021-09-14 22:31 ` [PATCH bpf-next v3 11/11] docs/bpf: add documentation for BTF_KIND_TAG Yonghong Song
2021-09-15 0:22 ` [PATCH bpf-next v3 00/11] bpf: add support for new btf kind BTF_KIND_TAG Andrii Nakryiko
2021-09-15 1:55 ` Alexei Starovoitov
2021-09-15 5:00 ` Yonghong Song
2021-09-15 2:00 ` patchwork-bot+netdevbpf
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