netdev - Re: [PATCH bpf-next v4 00/27] x86/ftrace/bpf: Add batch support for direct/tracing attach

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Date:   Mon, 30 Aug 2021 10:02:45 +0200
From:   Jiri Olsa <jolsa@...hat.com>
To:     Alexei Starovoitov <alexei.starovoitov@...il.com>
Cc:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andriin@...com>,
        "Steven Rostedt (VMware)" <rostedt@...dmis.org>,
        netdev@...r.kernel.org, bpf@...r.kernel.org,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...omium.org>, Daniel Xu <dxu@...uu.xyz>,
        Viktor Malik <vmalik@...hat.com>
Subject: Re: [PATCH bpf-next v4 00/27] x86/ftrace/bpf: Add batch support for
 direct/tracing attach

On Sun, Aug 29, 2021 at 10:04:25AM -0700, Alexei Starovoitov wrote:
> On Thu, Aug 26, 2021 at 09:38:55PM +0200, Jiri Olsa wrote:
> > hi,
> > sending new version of batch attach support, previous post
> > is in here [1].
> > 
> > The previous post could not assign multi trampoline on top
> > of regular trampolines. This patchset is trying to address
> > that, plus it has other fixes from last post.
> > 
> > This patchset contains:
> >   1) patches (1-4) that fix the ftrace graph tracing over the function
> >      with direct trampolines attached
> >   2) patches (5-8) that add batch interface for ftrace direct function
> >      register/unregister/modify
> >   3) patches (9-27) that add support to attach BPF program to multiple
> >      functions
> 
> I did a quick look and it looks ok, but probably will require another respin.
> In the mean would be great to land the first 8 patches for the upcoming merge
> window.
> Jiri,
> can you respin them quickly addressing build bot issues and maybe
> Steven can apply them into his tracing tree for the merge window?
> Then during the next release cycle we will only iterate on bpf bits in the
> later patches.
> Thoughts?

sounds good, will do

jirka