linux-kernel - Re: [RFC] tools lib traceevent: How to do library versioning being in the Linux kernel source?

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Date:   Mon, 6 Jan 2020 16:19:02 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     Sudip Mukherjee <sudipm.mukherjee@...il.com>,
        Ingo Molnar <mingo@...nel.org>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Linux Trace Devel <linux-trace-devel@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Konstantin Ryabitsev <konstantin@...uxfoundation.org>,
        users@...ux.kernel.org
Subject: Re: [RFC] tools lib traceevent: How to do library versioning being
 in the Linux kernel source?

On Fri, Jan 03, 2020 at 06:16:14PM -0500, Steven Rostedt wrote:
> 
> [ Added Konstantin and kernel.org users mailing list ]
> 
> On Fri, 3 Jan 2020 14:36:40 +0100
> Jiri Olsa <jolsa@...hat.com> wrote:
> 
> > On Thu, Jan 02, 2020 at 06:58:53PM -0500, Steven Rostedt wrote:
> > > On Fri, 3 Jan 2020 00:49:50 +0100
> > > Jiri Olsa <jolsa@...hat.com> wrote:
> > >   
> > > > > Should we move libtraceevent into a stand alone git repo (on
> > > > > kernel.org), that can have tags and branches specifically for it? We
> > > > > can keep a copy in the Linux source tree for perf to use till it    
> > > > 
> > > > so libbpf 'moved' for this reason to github repo,
> > > > but keeping the kernel as the true/first source,
> > > > and updating github repo when release is ready
> > > > 
> > > > libbpf github repo is then source for fedora (and others)
> > > > package  
> > > 
> > > Ah, so perhaps I should follow this? I could keep it a kernel.org repo
> > > (as I rather have it there anyway).  
> > 
> > sounds good, and if it works out, we'll follow you with libperf :-)
> > 
> > if you want to check on the libbpf:
> >   https://github.com/libbpf/libbpf
> > 
> > there might be some syncs scripts worth checking
> 
> I wonder if there should be a:
> 
>   git://git.kernel.org/pub/scm/utils/lib/
> 
> directory to have:
> 
>   git://git.kernel.org/pub/scm/utils/lib/traceevent/
>   git://git.kernel.org/pub/scm/utils/lib/libbpf/
>   git://git.kernel.org/pub/scm/utils/lib/libperf/

we could loose the 'lib' and just have:

    git://git.kernel.org/pub/scm/utils/lib/perf/

> 
> That could hold the libraries that are tight to the kernel?

I don't think libbpf will change now after they are settled in github,
but we could consider this for libperf

jirka