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

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Message-ID: <CAPWQB7E65hJPO9JPAtN-HxM3VUue2yrmx++YkQDTFL6oExVKpA@mail.gmail.com>
Date:   Thu, 26 Jan 2017 11:43:52 -0800
From:   Joe Stringer <joe@....org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     ast@...com, "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()

On 26 January 2017 at 11:32, Arnaldo Carvalho de Melo <acme@...nel.org> wrote:
> 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,

Ok thanks, I'll continue from there.