netdev - Re: [PATCHv2 perf/core 5/7] tools lib bpf: Add bpf_program_

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Message-ID: <20170126193240.GC17504@kernel.org>
Date:   Thu, 26 Jan 2017 16:32:40 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Joe Stringer <joe@....org>, ast@...com
Cc:     "Wangnan (F)" <wangnan0@...wei.com>,
        Daniel Borkmann <daniel@...earbox.net>,
        LKML <linux-kernel@...r.kernel.org>,
        netdev <netdev@...r.kernel.org>
Subject: Re: [PATCHv2 perf/core 5/7] tools lib bpf: Add bpf_program__pin()

Em Wed, Jan 25, 2017 at 10:18:22AM +0800, Wangnan (F) escreveu:
> On 2017/1/25 9:16, Joe Stringer wrote:
> > On 24 January 2017 at 17:06, Wangnan (F) <wangnan0@...wei.com> wrote:
> > > On 2017/1/25 9:04, Wangnan (F) wrote:
> > > Is it possible to use directory tree instead?

> > > %s/object/mapname
> > > %s/object/prog/instance
> > I don't think objects have names, so let's assume an object with two
> > program instances named foo, and one map named bar.

> > A call of bpf_object__pin(obj, "/sys/fs/bpf/myobj") would mount with
> > the following files and directories:
> > /sys/fs/bpf/myobj/foo/1
> > /sys/fs/bpf/myobj/foo/2
> > /sys/fs/bpf/myobj/bar

> > Alternatively, if you want to control exactly where you want the
> > progs/maps to be pinned, you can call eg
> > bpf_program__pin_instance(prog, "/sys/fs/bpf/wherever", 0) and that
> > instance will be mounted to /sys/fs/bpf/wherever, or alternatively
> > bpf_program__pin(prog, "/sys/fs/bpf/foo"), and you will end up with
> > /sys/fs/bpf/foo/{0,1}.

> > This looks pretty reasonable to me.

> It looks good to me.

Ok, please continue from perf/core, Ingo merged the first patch of this
patchset today,

- Arnaldo