Re: [PATCH v3 1/2] Provide in-kernel headers for making it easy to extend the kernel

[Dietmar Eggemann]

On 2/28/19 5:48 PM, Qais Yousef wrote:
> On 02/28/19 17:04, Dietmar Eggemann wrote:
> > Hi Joel,
> >
> > On 2/28/19 3:47 PM, Joel Fernandes wrote:
> > > On Thu, Feb 28, 2019 at 01:53:43PM +0000, Qais Yousef wrote:
> > > > Hi Joel
> > > >
> > > > On 02/27/19 14:37, Joel Fernandes (Google) wrote:

[...]

> > The reason for me to stay on v4.20 is that with v5.0-rc8 I don't have ebpf
> > 'raw tracepoint' support any more on my arm64 board. But this issue is not
> > related to your patch though.
>
> And this is caused by a38d1107f937 (bpf: support raw tracepoints in modules)
> which renamed bpf_find_raw_tracepoint() which bcc-tools relies on to detect if
> raw tracepoints are supported..
>
> https://github.com/iovisor/bcc/blob/master/src/python/bcc/__init__.py#L860
>
> Speaking of fragile depedencies :-)
>
> I guess the check can be extended to check for both symbols - but it'll stay
> fragile. Not sure if they can do better.
>
> I filed a bug
>
> https://github.com/iovisor/bcc/issues/2240

This did the trick for me on v5.0-rc8. Thanks, Qais!