BPF Archive on lore.kernel.org
 help / color / Atom feed
From: Ilya Leoshkevich <iii@linux.ibm.com>
To: Alexei Starovoitov <ast@kernel.org>,
	Daniel Borkmann <daniel@iogearbox.net>,
	Andrii Nakryiko <andrii@kernel.org>, Yonghong Song <yhs@fb.com>,
	Arnaldo Carvalho de Melo <acme@redhat.com>,
	John Fastabend <john.fastabend@gmail.com>
Cc: bpf@vger.kernel.org, Heiko Carstens <heiko.carstens@de.ibm.com>,
	Vasily Gorbik <gor@linux.ibm.com>,
	Ilya Leoshkevich <iii@linux.ibm.com>
Subject: [PATCH v4 bpf-next 3/7] tools/bpftool: Add BTF_KIND_FLOAT support
Date: Mon, 22 Feb 2021 22:49:13 +0100
Message-ID: <20210222214917.83629-4-iii@linux.ibm.com> (raw)
In-Reply-To: <20210222214917.83629-1-iii@linux.ibm.com>

Only dumping support needs to be adjusted, the code structure follows
that of BTF_KIND_INT. Example plain and JSON outputs:

    [4] FLOAT 'float' size=4
    {"id":4,"kind":"FLOAT","name":"float","size":4}

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
---
 tools/bpf/bpftool/btf.c        | 8 ++++++++
 tools/bpf/bpftool/btf_dumper.c | 1 +
 2 files changed, 9 insertions(+)

diff --git a/tools/bpf/bpftool/btf.c b/tools/bpf/bpftool/btf.c
index fe9e7b3a4b50..985610c3f193 100644
--- a/tools/bpf/bpftool/btf.c
+++ b/tools/bpf/bpftool/btf.c
@@ -36,6 +36,7 @@ static const char * const btf_kind_str[NR_BTF_KINDS] = {
 	[BTF_KIND_FUNC_PROTO]	= "FUNC_PROTO",
 	[BTF_KIND_VAR]		= "VAR",
 	[BTF_KIND_DATASEC]	= "DATASEC",
+	[BTF_KIND_FLOAT]	= "FLOAT",
 };
 
 struct btf_attach_table {
@@ -327,6 +328,13 @@ static int dump_btf_type(const struct btf *btf, __u32 id,
 			jsonw_end_array(w);
 		break;
 	}
+	case BTF_KIND_FLOAT: {
+		if (json_output)
+			jsonw_uint_field(w, "size", t->size);
+		else
+			printf(" size=%u", t->size);
+		break;
+	}
 	default:
 		break;
 	}
diff --git a/tools/bpf/bpftool/btf_dumper.c b/tools/bpf/bpftool/btf_dumper.c
index 0e9310727281..7ca54d046362 100644
--- a/tools/bpf/bpftool/btf_dumper.c
+++ b/tools/bpf/bpftool/btf_dumper.c
@@ -596,6 +596,7 @@ static int __btf_dumper_type_only(const struct btf *btf, __u32 type_id,
 	switch (BTF_INFO_KIND(t->info)) {
 	case BTF_KIND_INT:
 	case BTF_KIND_TYPEDEF:
+	case BTF_KIND_FLOAT:
 		BTF_PRINT_ARG("%s ", btf__name_by_offset(btf, t->name_off));
 		break;
 	case BTF_KIND_STRUCT:
-- 
2.29.2


  parent reply index

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-22 21:49 [PATCH v4 bpf-next 0/7] " Ilya Leoshkevich
2021-02-22 21:49 ` [PATCH v4 bpf-next 1/7] bpf: Add BTF_KIND_FLOAT to uapi Ilya Leoshkevich
2021-02-22 21:49 ` [PATCH v4 bpf-next 2/7] libbpf: Add BTF_KIND_FLOAT support Ilya Leoshkevich
2021-02-23  7:03   ` Andrii Nakryiko
2021-02-23  7:08     ` Andrii Nakryiko
2021-02-23 20:14     ` Ilya Leoshkevich
2021-02-22 21:49 ` Ilya Leoshkevich [this message]
2021-02-22 21:49 ` [PATCH v4 bpf-next 4/7] selftests/bpf: Use 25th bit in "invalid BTF_INFO" test Ilya Leoshkevich
2021-02-22 21:49 ` [PATCH v4 bpf-next 5/7] bpf: Add BTF_KIND_FLOAT support Ilya Leoshkevich
2021-02-22 21:49 ` [PATCH v4 bpf-next 6/7] selftest/bpf: Add BTF_KIND_FLOAT tests Ilya Leoshkevich
2021-02-23  7:11   ` Andrii Nakryiko
2021-02-23 20:16     ` Ilya Leoshkevich
2021-02-23 21:35       ` Andrii Nakryiko
2021-02-22 21:49 ` [PATCH v4 bpf-next 7/7] bpf: Document BTF_KIND_FLOAT in btf.rst Ilya Leoshkevich

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210222214917.83629-4-iii@linux.ibm.com \
    --to=iii@linux.ibm.com \
    --cc=acme@redhat.com \
    --cc=andrii@kernel.org \
    --cc=ast@kernel.org \
    --cc=bpf@vger.kernel.org \
    --cc=daniel@iogearbox.net \
    --cc=gor@linux.ibm.com \
    --cc=heiko.carstens@de.ibm.com \
    --cc=john.fastabend@gmail.com \
    --cc=yhs@fb.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

BPF Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/bpf/0 bpf/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 bpf bpf/ https://lore.kernel.org/bpf \
		bpf@vger.kernel.org
	public-inbox-index bpf

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.bpf


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git