On Thu, 8 Nov 2018 12:37:06 -0200 Arnaldo Carvalho de Melo <a...@redhat.com> wrote:
> Em Thu, Nov 08, 2018 at 02:37:54PM +0100, Jesper Dangaard Brouer escreveu: > > Hi Jakub, Laura and Jiri Olsa (Cc others), > > > > Subj: iovisor-dev] minutes: IO Visor TSC/Dev Meeting > > (To: iovisor-dev <iovisor-dev@lists.iovisor.org>) > > On Wed, 31 Oct 2018 14:30:25 -0700 "Brenden Blanco" <bbla...@gmail.com> > > wrote: > > > Jakub: > > > * working on getting libbpf packaged separately and released by distros > > > * FB has external mirror github.com/libbpf/libbpf > > > > > > > I noticed from the iovisor-dev minutes that you have plans for > > packaging libbpf from the kernel tree. And via that I noticed the > > github repo https://github.com/libbpf/libbpf, created by Yonghong Song. > > > > I'm uncertain if it makes sense to maintain this library outside the > > kernel git tree?!? > > To ease access to the latest perf sources, we'll be making available > detached tarballs: > > [acme@jouet linux]$ make help | grep perf > perf-tar-src-pkg - Build perf-4.20.0-rc1.tar source tarball > perf-targz-src-pkg - Build perf-4.20.0-rc1.tar.gz source tarball > perf-tarbz2-src-pkg - Build perf-4.20.0-rc1.tar.bz2 source tarball > perf-tarxz-src-pkg - Build perf-4.20.0-rc1.tar.xz source tarball > [acme@jouet linux]$ > > After each kernel release, we started with 4.19: > > https://www.kernel.org/pub/linux/kernel/tools/perf/ And you basically also ship a version of libbpf in this tarball: $ tar tvf ~/download/perf-4.19.0.tar.xz | grep lib/bpf drwxrwxr-x root/root 0 2018-10-22 16:39 perf-4.19.0/tools/lib/bpf/ -rw-rw-r-- root/root 37 2018-10-22 16:39 perf-4.19.0/tools/lib/bpf/.gitignore -rw-rw-r-- root/root 69 2018-10-22 16:39 perf-4.19.0/tools/lib/bpf/Build -rw-rw-r-- root/root 6457 2018-10-22 16:39 perf-4.19.0/tools/lib/bpf/Makefile -rw-rw-r-- root/root 16456 2018-10-22 16:39 perf-4.19.0/tools/lib/bpf/bpf.c -rw-rw-r-- root/root 4440 2018-10-22 16:39 perf-4.19.0/tools/lib/bpf/bpf.h -rw-rw-r-- root/root 7897 2018-10-22 16:39 perf-4.19.0/tools/lib/bpf/btf.c -rw-rw-r-- root/root 775 2018-10-22 16:39 perf-4.19.0/tools/lib/bpf/btf.h -rw-rw-r-- root/root 56905 2018-10-22 16:39 perf-4.19.0/tools/lib/bpf/libbpf.c -rw-rw-r-- root/root 10683 2018-10-22 16:39 perf-4.19.0/tools/lib/bpf/libbpf.h -rw-rw-r-- root/root 2380 2018-10-22 16:39 perf-4.19.0/tools/lib/bpf/libbpf_errno.c -rw-rw-r-- root/root 4483 2018-10-22 16:39 perf-4.19.0/tools/lib/bpf/nlattr.c -rw-rw-r-- root/root 1825 2018-10-22 16:39 perf-4.19.0/tools/lib/bpf/nlattr.h -rw-rw-r-- root/root 479 2018-10-22 16:39 perf-4.19.0/tools/lib/bpf/str_error.c -rw-rw-r-- root/root 152 2018-10-22 16:39 perf-4.19.0/tools/lib/bpf/str_error.h Which gets compiled to libbpf.a and statically linked with perf. > Development continues in the kernel git tree, of course, and there > you'll be able to, using those top level kernel perf-tar-* targets to > get the bleeding edge, while those tarballs on > https://www.kernel.org/pub/linux/kernel/tools/perf/ > help people wanting to try the latest released with older kernels, or to > test one previous release with a more recent kernel, to rule out > problems with some specific perf version. > > Konstantin, the kernel.org admin accepted my suggestion for such a > directory name so that we could, in the future, perhaps have the other > tools/ living libraries and tools to follow this model, i.e. we would > have: > > https://www.kernel.org/pub/linux/kernel/tools/lib/bpf/ > > etc. > > - Arnaldo > > > To be honest, I have very little knowledge about building RPMs and > > other packages formats. I just wanted to point out that RHEL and > > Fedora is now shipping bpftool, which also part of kernel git tree. > > > > (Now I need input from Jiri Olsa and Laura to correct below statements:) > > > > AFAIK bpftool RPM-package[1] is part of the "Source Package" > > kernel-tools, which AFAIK gets build directly from the distro kernel > > git tree via kernel.spec file. This also happens for perf > > RPM-package[2] see section "Source Package" also point to kernel-tools. > > > > So, my question is, can we ship/package libbpf in the same way? > > > > > > Notice, that an increasing number of tools are linking/using libbpf, > > e.g. perf, bpftool, Suricata, (selftests and samples/bpf). > > > > > > [1] > > https://fedora.pkgs.org/28/fedora-x86_64/bpftool-4.16.0-1.fc28.x86_64.rpm.html > > [2] > > https://fedora.pkgs.org/29/fedora-x86_64/perf-4.18.10-300.fc29.x86_64.rpm.html -- Best regards, Jesper Dangaard Brouer MSc.CS, Principal Kernel Engineer at Red Hat LinkedIn: http://www.linkedin.com/in/brouer -=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#1519): https://lists.iovisor.org/g/iovisor-dev/message/1519 Mute This Topic: https://lists.iovisor.org/mt/28036138/21656 Group Owner: iovisor-dev+ow...@lists.iovisor.org Unsubscribe: https://lists.iovisor.org/g/iovisor-dev/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
