linux-kernel - Re: [RFC 1/2] perf: support build BPF skeletons with perf

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Date:   Wed, 25 Nov 2020 17:40:44 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     Song Liu <songliubraving@...com>
Cc:     open list <linux-kernel@...r.kernel.org>,
        Kernel Team <Kernel-team@...com>,
        "peterz@...radead.org" <peterz@...radead.org>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "acme@...nel.org" <acme@...nel.org>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "alexander.shishkin@...ux.intel.com" 
        <alexander.shishkin@...ux.intel.com>,
        "namhyung@...nel.org" <namhyung@...nel.org>
Subject: Re: [RFC 1/2] perf: support build BPF skeletons with perf

On Tue, Nov 24, 2020 at 11:52:43PM +0000, Song Liu wrote:
> 
> 
> > On Nov 22, 2020, at 3:35 PM, Jiri Olsa <jolsa@...hat.com> wrote:
> > 
> > On Wed, Nov 18, 2020 at 08:50:45PM -0800, Song Liu wrote:
> >> BPF programs are useful in perf to profile BPF programs. BPF skeleton is
> >> by far the easiest way to write BPF tools. Enable building BPF skeletons
> >> in util/bpf_skel. A dummy bpf skeleton is added. More bpf skeletons will
> >> be added for different use cases.
> > 
> > I was just in a place adding bpf program to perf as well,
> > so this will save me some time ;-) thanks!
> 
> I'd love to learn about your plan. Maybe we have some similar ideas, 
> and could collaborate on them. 

the plan was to use skeleton as you did, because I agree it's the best
way to include bpf program in perf

I'm now using your patch and adding my bpf program on top of that ;-)

thanks,
jirka