From: Alan Maguire <alan.maguire@oracle.com>
To: ast@kernel.org, andrii@kernel.org
Cc: daniel@iogearbox.net, eddyz87@gmail.com, jolsa@kernel.org,
ihor.solodrai@linux.dev, yonghong.song@linux.dev,
song@kernel.org, qmo@kernel.org, martin.lau@linux.dev,
memxor@gmail.com, emil@etsalapatis.com, mcgrof@kernel.org,
petr.pavlu@suse.com, tj@kernel.org, kees@kernel.org,
bpf@vger.kernel.org, nathan@kernel.org, nsc@kernel.org,
arnd@arndb.de, puranjay@kernel.org, yatsenko@meta.com,
atenart@kernel.org, ojeda@kernel.org,
linux-modules@vger.kernel.org,
Alan Maguire <alan.maguire@oracle.com>
Subject: [PATCH v2 bpf-next 11/18] bpftool: Add ability to dump LOC_PARAM, LOC_PROTO and LOCSEC
Date: Tue, 1 Sep 2026 17:57:50 +0100 [thread overview]
Message-ID: <20260901165757.801449-12-alan.maguire@oracle.com> (raw)
In-Reply-To: <20260901165757.801449-1-alan.maguire@oracle.com>
In raw mode ensure we can dump new BTF kinds in normal/json format.
Signed-off-by: Alan Maguire <alan.maguire@oracle.com>
---
tools/bpf/bpftool/btf.c | 85 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 85 insertions(+)
diff --git a/tools/bpf/bpftool/btf.c b/tools/bpf/bpftool/btf.c
index bca0a3982f09..4d8991c99b48 100644
--- a/tools/bpf/bpftool/btf.c
+++ b/tools/bpf/bpftool/btf.c
@@ -51,6 +51,9 @@ static const char * const btf_kind_str[NR_BTF_KINDS] = {
[BTF_KIND_DECL_TAG] = "DECL_TAG",
[BTF_KIND_TYPE_TAG] = "TYPE_TAG",
[BTF_KIND_ENUM64] = "ENUM64",
+ [BTF_KIND_LOC_PARAM] = "LOC_PARAM",
+ [BTF_KIND_LOC_PROTO] = "LOC_PROTO",
+ [BTF_KIND_LOCSEC] = "LOCSEC",
};
struct sort_datum {
@@ -415,6 +418,88 @@ static int dump_btf_type(const struct btf *btf, __u32 id,
}
break;
}
+ case BTF_KIND_LOC_PARAM: {
+ const struct btf_loc_param *p = btf_loc_param(t);
+ __u32 *v = (__u32 *)(p + 1);
+ __u32 i, vlen = btf_vlen(t);
+
+ if (json_output) {
+ jsonw_uint_field(w, "size", t->size);
+ jsonw_uint_field(w, "flags", p->flags);
+ jsonw_uint_field(w, "vlen", vlen);
+ jsonw_name(w, "values");
+ jsonw_start_array(w);
+ } else {
+ printf(" size=%u flags=0x%x vlen=%u", t->size, p->flags, vlen);
+ }
+ for (i = 0; i < vlen; i++, v++) {
+ if (json_output) {
+ jsonw_start_object(w);
+ jsonw_uint_field(w, "value", *v);
+ jsonw_end_object(w);
+ } else {
+ printf("\n\t value=%u", *v);
+ }
+ }
+ if (json_output)
+ jsonw_end_array(w);
+ break;
+ }
+ case BTF_KIND_LOC_PROTO: {
+ __u32 *params = btf_loc_proto_params(t);
+ __u16 vlen = btf_vlen(t);
+ int i;
+
+ if (json_output) {
+ jsonw_uint_field(w, "vlen", vlen);
+ jsonw_name(w, "params");
+ jsonw_start_array(w);
+ } else {
+ printf(" vlen=%u", vlen);
+ }
+
+ for (i = 0; i < vlen; i++, params++) {
+ if (json_output) {
+ jsonw_start_object(w);
+ jsonw_uint_field(w, "type_id", *params);
+ jsonw_end_object(w);
+ } else {
+ printf("\n\t type_id=%u", *params);
+ }
+ }
+ if (json_output)
+ jsonw_end_array(w);
+ break;
+ }
+
+ case BTF_KIND_LOCSEC: {
+ struct btf_loc *locs = btf_locsec_locs(t);
+ __u32 i, vlen = btf_vlen(t);
+
+ if (json_output) {
+ jsonw_uint_field(w, "vlen", vlen);
+ jsonw_name(w, "locs");
+ jsonw_start_array(w);
+ } else {
+ printf(" vlen=%u", vlen);
+ }
+
+ for (i = 0; i < vlen; i++, locs++) {
+ if (json_output) {
+ jsonw_start_object(w);
+ jsonw_uint_field(w, "func_type_id", locs->func);
+ jsonw_uint_field(w, "loc_proto_type_id", locs->loc_proto);
+ jsonw_uint_field(w, "offset", locs->offset);
+ jsonw_end_object(w);
+ } else {
+ printf("\n\t func_type_id=%u loc_proto_type_id=%u offset=%u",
+ locs->func, locs->loc_proto, locs->offset);
+ }
+ }
+ if (json_output)
+ jsonw_end_array(w);
+ break;
+ }
default:
break;
}
--
2.43.5
next prev parent reply other threads:[~2026-09-01 16:59 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-01 16:57 [PATCH v2 bpf-next 00/18] Support inline functions in BTF Alan Maguire
2026-09-01 16:57 ` [PATCH v2 bpf-next 01/18] btf: Extend UAPI to support BTF location (inline site) info Alan Maguire
2026-09-01 17:17 ` sashiko-bot
2026-09-01 17:55 ` bot+bpf-ci
2026-09-01 16:57 ` [PATCH v2 bpf-next 02/18] libbpf: Add support for BTF kinds LOC[_PARAM|_PROTO|SEC] Alan Maguire
2026-09-01 17:11 ` sashiko-bot
2026-09-01 16:57 ` [PATCH v2 bpf-next 03/18] libbpf: Support moving permuted BTF types into split BTF Alan Maguire
2026-09-01 17:15 ` sashiko-bot
2026-09-01 18:14 ` bot+bpf-ci
2026-09-01 16:57 ` [PATCH v2 bpf-next 04/18] selftests/bpf: Test helper support for BTF_KIND_LOC[_PARAM|_PROTO|SEC] Alan Maguire
2026-09-01 17:06 ` sashiko-bot
2026-09-01 16:57 ` [PATCH v2 bpf-next 05/18] selftests/bpf: Add LOC_PARAM, LOC_PROTO, LOCSEC to field iter tests Alan Maguire
2026-09-01 16:57 ` [PATCH v2 bpf-next 06/18] selftests/bpf: Add LOC_PARAM, LOC_PROTO, LOCSEC to dedup split tests Alan Maguire
2026-09-01 17:55 ` bot+bpf-ci
2026-09-01 16:57 ` [PATCH v2 bpf-next 07/18] selftests/bpf: BTF distill tests to ensure LOC[_PARAM|_PROTO] add to split BTF Alan Maguire
2026-09-01 17:55 ` bot+bpf-ci
2026-09-01 16:57 ` [PATCH v2 bpf-next 08/18] selftests/bpf: Validate that btf__permute transfer works Alan Maguire
2026-09-01 17:16 ` sashiko-bot
2026-09-01 17:55 ` bot+bpf-ci
2026-09-01 16:57 ` [PATCH v2 bpf-next 09/18] bpftool: Handle multi-split BTF by supporting multiple base BTFs Alan Maguire
2026-09-01 17:13 ` sashiko-bot
2026-09-01 16:57 ` [PATCH v2 bpf-next 10/18] bpftool: Document support for multi-split BTF Alan Maguire
2026-09-01 17:12 ` sashiko-bot
2026-09-01 16:57 ` Alan Maguire [this message]
2026-09-01 17:16 ` [PATCH v2 bpf-next 11/18] bpftool: Add ability to dump LOC_PARAM, LOC_PROTO and LOCSEC sashiko-bot
2026-09-01 17:55 ` bot+bpf-ci
2026-09-01 16:57 ` [PATCH v2 bpf-next 12/18] resolve_btfids: Extract inline BTF Alan Maguire
2026-09-01 17:23 ` sashiko-bot
2026-09-01 16:57 ` [PATCH v2 bpf-next 13/18] kbuild: Add support for BTF inline information Alan Maguire
2026-09-01 17:55 ` bot+bpf-ci
2026-09-01 16:57 ` [PATCH v2 bpf-next 14/18] btf: Make vmlinux, module inline info available in /sys/kernel/btf Alan Maguire
2026-09-01 16:57 ` [PATCH v2 bpf-next 15/18] btf: Support CONFIG_DEBUG_INFO_BTF_INLINE=m Alan Maguire
2026-09-01 17:24 ` sashiko-bot
2026-09-01 16:57 ` [PATCH v2 bpf-next 16/18] btf: Relocate inline BTF for modules with distilled base BTF Alan Maguire
2026-09-01 17:29 ` sashiko-bot
2026-09-01 17:55 ` bot+bpf-ci
2026-09-01 16:57 ` [PATCH v2 bpf-next 17/18] selftests/bpf: Test BTF sysfs inline representations Alan Maguire
2026-09-01 17:22 ` sashiko-bot
2026-09-01 17:55 ` bot+bpf-ci
2026-09-01 16:57 ` [PATCH v2 bpf-next 18/18] selftests/bpf: Add a test verifying inline information Alan Maguire
2026-09-01 17:28 ` sashiko-bot
2026-09-01 17:55 ` bot+bpf-ci
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