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Re: [PATCH perf/core REBASE 3/5] tools lib bpf: Add bpf_prog_{attach,detach}

From Arnaldo Carvalho de Melo <acme@kernel.org>
Newsgroups linux.kernel
Subject Re: [PATCH perf/core REBASE 3/5] tools lib bpf: Add bpf_prog_{attach,detach}
Date 2016-12-21 17:10 +0100
Message-ID <sQRCO-5Db-25@gated-at.bofh.it> (permalink)
References <sOqGK-6gP-9@gated-at.bofh.it> <sOqQp-6zC-7@gated-at.bofh.it> <sQtqN-6G9-3@gated-at.bofh.it> <sQtKa-6MJ-13@gated-at.bofh.it> <sQxNL-Pw-11@gated-at.bofh.it>
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Em Tue, Dec 20, 2016 at 10:50:22AM -0800, Joe Stringer escreveu:
> On 20 December 2016 at 06:32, Arnaldo Carvalho de Melo <acme@kernel.org> wrote:
> > Em Tue, Dec 20, 2016 at 11:18:51AM -0300, Arnaldo Carvalho de Melo escreveu:
> >> This one makes it fail for CentOS 5 and 6, others may fail as well,
> >> still building, investigating...
> >
> > Ok, fixed it by making it follow the model of the other sys_bpf wrappers
> > setting up that bpf_attr union wrt initializing unamed struct members:
> > -       union bpf_attr attr = {
> > -               .target_fd = target_fd,
> > -       };
> > +       union bpf_attr attr;
> > +
> > +       bzero(&attr, sizeof(attr));
> > +       attr.target_fd     = target_fd;

> Ah, I just shifted these across originally so the delta would be
> minimal but now I know why this code is like this. Thanks.

np, making sure this code works in all those environments requires
automation, I'd say its impossible otherwise, too many details :-\

Fixed, pushed, merged, should hit 4.10 soon :-)

- Arnaldo

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Thread

[PATCH perf/core REBASE 0/5] Reuse libbpf from samples/bpf Joe Stringer <joe@ovn.org> - 2016-12-15 00:00 +0100
  [PATCH perf/core REBASE 2/5] samples/bpf: Switch over to libbpf Joe Stringer <joe@ovn.org> - 2016-12-15 00:00 +0100
    Re: [PATCH perf/core REBASE 2/5] samples/bpf: Switch over to libbpf Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-12-15 17:00 +0100
      Re: [PATCH perf/core REBASE 2/5] samples/bpf: Switch over to libbpf Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-12-15 19:40 +0100
        Re: [PATCH perf/core REBASE 2/5] samples/bpf: Switch over to libbpf Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-12-15 19:50 +0100
        Re: [PATCH perf/core REBASE 2/5] samples/bpf: Switch over to libbpf Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-12-15 19:50 +0100
          Re: [PATCH perf/core REBASE 2/5] samples/bpf: Switch over to libbpf Joe Stringer <joe@ovn.org> - 2016-12-15 23:10 +0100
            Re: [PATCH perf/core REBASE 2/5] samples/bpf: Switch over to libbpf Joe Stringer <joe@ovn.org> - 2016-12-16 02:50 +0100
              Re: [PATCH perf/core REBASE 2/5] samples/bpf: Switch over to libbpf Arnaldo Carvalho de Melo <acme@redhat.com> - 2016-12-16 15:30 +0100
              Re: [PATCH perf/core REBASE 2/5] samples/bpf: Switch over to libbpf Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-12-16 16:50 +0100
              Re: [PATCH perf/core REBASE 2/5] samples/bpf: Switch over to libbpf Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-12-20 14:50 +0100
      Re: [PATCH perf/core REBASE 2/5] samples/bpf: Switch over to libbpf Joe Stringer <joe@ovn.org> - 2016-12-15 19:40 +0100
        Re: [PATCH perf/core REBASE 2/5] samples/bpf: Switch over to libbpf Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-12-15 20:10 +0100
  [PATCH perf/core REBASE 3/5] tools lib bpf: Add bpf_prog_{attach,detach} Joe Stringer <joe@ovn.org> - 2016-12-15 00:10 +0100
    Re: [PATCH perf/core REBASE 3/5] tools lib bpf: Add  bpf_prog_{attach,detach} Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-12-20 15:20 +0100
      Re: [PATCH perf/core REBASE 3/5] tools lib bpf: Add  bpf_prog_{attach,detach} Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-12-20 15:40 +0100
        Re: [PATCH perf/core REBASE 3/5] tools lib bpf: Add bpf_prog_{attach,detach} Joe Stringer <joe@ovn.org> - 2016-12-20 20:00 +0100
          Re: [PATCH perf/core REBASE 3/5] tools lib bpf: Add  bpf_prog_{attach,detach} Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-12-21 17:10 +0100
  [PATCH perf/core REBASE 4/5] samples/bpf: Remove perf_event_open() declaration Joe Stringer <joe@ovn.org> - 2016-12-15 00:10 +0100
  [PATCH perf/core REBASE 1/5] samples/bpf: Make samples more libbpf-centric Joe Stringer <joe@ovn.org> - 2016-12-15 00:10 +0100
    [tip:perf/urgent] samples/bpf: Make samples more libbpf-centric tip-bot for Joe Stringer <tipbot@zytor.com> - 2016-12-20 20:30 +0100
  [PATCH perf/core REBASE 5/5] samples/bpf: Move open_raw_sock to separate header Joe Stringer <joe@ovn.org> - 2016-12-15 00:10 +0100

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