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docs/bpf: Update bpf development Q/A file

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bpf now has its own mailing list bpf@vger.kernel.org.
Update the bpf_devel_QA.rst file to reflect this.

Also llvm has switch to github with llvm and clang
in the same repo https://github.com/llvm/llvm-project.git.
Update the QA file with newer build instructions.

Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20200221004354.930952-1-yhs@fb.com
This commit is contained in:
Yonghong Song 2020-02-20 16:43:54 -08:00 committed by Alexei Starovoitov
parent 006ed53e8c
commit e42da4c62a
1 changed files with 12 additions and 17 deletions
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29
Documentation/bpf/bpf_devel_QA.rst
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@ -20,11 +20,11 @@ Reporting bugs
Q: How do I report bugs for BPF kernel code?
--------------------------------------------
A: Since all BPF kernel development as well as bpftool and iproute2 BPF
loader development happens through the netdev kernel mailing list,
loader development happens through the bpf kernel mailing list,
please report any found issues around BPF to the following mailing
list:
netdev@vger.kernel.org
bpf@vger.kernel.org
This may also include issues related to XDP, BPF tracing, etc.
@ -46,17 +46,12 @@ Submitting patches
Q: To which mailing list do I need to submit my BPF patches?
------------------------------------------------------------
A: Please submit your BPF patches to the netdev kernel mailing list:
A: Please submit your BPF patches to the bpf kernel mailing list:
netdev@vger.kernel.org
Historically, BPF came out of networking and has always been maintained
by the kernel networking community. Although these days BPF touches
many other subsystems as well, the patches are still routed mainly
through the networking community.
bpf@vger.kernel.org
In case your patch has changes in various different subsystems (e.g.
tracing, security, etc), make sure to Cc the related kernel mailing
networking, tracing, security, etc), make sure to Cc the related kernel mailing
lists and maintainers from there as well, so they are able to review
the changes and provide their Acked-by's to the patches.
@ -168,7 +163,7 @@ a BPF point of view.
Be aware that this is not a final verdict that the patch will
automatically get accepted into net or net-next trees eventually:
On the netdev kernel mailing list reviews can come in at any point
On the bpf kernel mailing list reviews can come in at any point
in time. If discussions around a patch conclude that they cannot
get included as-is, we will either apply a follow-up fix or drop
them from the trees entirely. Therefore, we also reserve to rebase
@ -494,15 +489,15 @@ A: You need cmake and gcc-c++ as build requisites for LLVM. Once you have
that set up, proceed with building the latest LLVM and clang version
from the git repositories::
$ git clone http://llvm.org/git/llvm.git
$ cd llvm/tools
$ git clone --depth 1 http://llvm.org/git/clang.git
$ cd ..; mkdir build; cd build
$ cmake .. -DLLVM_TARGETS_TO_BUILD="BPF;X86" \
$ git clone https://github.com/llvm/llvm-project.git
$ mkdir -p llvm-project/llvm/build/install
$ cd llvm-project/llvm/build
$ cmake .. -G "Ninja" -DLLVM_TARGETS_TO_BUILD="BPF;X86" \
-DLLVM_ENABLE_PROJECTS="clang" \
-DBUILD_SHARED_LIBS=OFF \
-DCMAKE_BUILD_TYPE=Release \
-DLLVM_BUILD_RUNTIME=OFF
$ make -j $(getconf _NPROCESSORS_ONLN)
$ ninja
The built binaries can then be found in the build/bin/ directory, where
you can point the PATH variable to.