Re: [PATCH 00/18] [ANNOUNCE] Dynamically created function based events

Alexei Starovoitov
2018-02-03T21:38:21Z

On Sat, Feb 03, 2018 at 04:17:32PM -0500, Steven Rostedt wrote:
> On Sat, 3 Feb 2018 12:52:08 -0800
> Alexei Starovoitov <alexei.starovoitov@gmail.com> wrote:
>
> > It's a user space job.
>
> BTW, I asked around at DevConf.cz, and nobody I talked with (besides
> Arnaldo), have used eBPF. The "path to hello world" is quite high. This
> interface is extremely simple to use, and one doesn't need to install
> LLVM or other tools to interface with it.
>
> I used the analogy, that eBPF is like C, and this is like Bash. One is
> much easier to get "Hello World!" out than the other.
>
> So personally, this is something I know I would use (note, I have
> never used eBPF either). But if I'm the only one to use this
> interface then I'll stop here (and not bother with the function graph
> return interface). If others think this would be helpful, I would ask
> them to speak up now.

I'm not arguing against the patches. I know that there are folks
out there who like to use cat/echo interfaces.
I'm only happy that the whole thing has its own kconfig
that we can keep off in fb kernels to reduce maintenance/support burden.
Just like we do for all sorts of other kernel features.