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authorTiezhu Yang <yangtiezhu@loongson.cn>2021-04-23 04:23:30 +0300
committerAlexei Starovoitov <ast@kernel.org>2021-04-24 03:11:58 +0300
commit350a62ca065be252ababc43a7c96f8aca390a18f (patch)
treeaf3b1e2e886adab5b5f6ba5a8ea5327627d28cf7 /Documentation/bpf/bpf_devel_QA.rst
parent7d3c10770603570081289511c8ce112696fb1d55 (diff)
downloadlinux-350a62ca065be252ababc43a7c96f8aca390a18f.tar.xz
bpf: Document the pahole release info related to libbpf in bpf_devel_QA.rst
pahole starts to use libbpf definitions and APIs since v1.13 after the commit 21507cd3e97b ("pahole: add libbpf as submodule under lib/bpf"). It works well with the git repository because the libbpf submodule will use "git submodule update --init --recursive" to update. Unfortunately, the default github release source code does not contain libbpf submodule source code and this will cause build issues, the tarball from https://git.kernel.org/pub/scm/devel/pahole/pahole.git/ is same with github, you can get the source tarball with corresponding libbpf submodule codes from https://fedorapeople.org/~acme/dwarves This change documents the above issues to give more information so that we can get the tarball from the right place, early discussion is here: https://lore.kernel.org/bpf/2de4aad5-fa9e-1c39-3c92-9bb9229d0966@loongson.cn/ Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Reviewed-by: Arnaldo Carvalho de Melo <acme@redhat.com> Link: https://lore.kernel.org/bpf/1619141010-12521-1-git-send-email-yangtiezhu@loongson.cn
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diff --git a/Documentation/bpf/bpf_devel_QA.rst b/Documentation/bpf/bpf_devel_QA.rst
index d05e67e72c10..253496af8fef 100644
--- a/Documentation/bpf/bpf_devel_QA.rst
+++ b/Documentation/bpf/bpf_devel_QA.rst
@@ -449,6 +449,19 @@ from source at
https://github.com/acmel/dwarves
+pahole starts to use libbpf definitions and APIs since v1.13 after the
+commit 21507cd3e97b ("pahole: add libbpf as submodule under lib/bpf").
+It works well with the git repository because the libbpf submodule will
+use "git submodule update --init --recursive" to update.
+
+Unfortunately, the default github release source code does not contain
+libbpf submodule source code and this will cause build issues, the tarball
+from https://git.kernel.org/pub/scm/devel/pahole/pahole.git/ is same with
+github, you can get the source tarball with corresponding libbpf submodule
+codes from
+
+https://fedorapeople.org/~acme/dwarves
+
Some distros have pahole version 1.16 packaged already, e.g.
Fedora, Gentoo.