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

Namhyung Kim
2018-02-04T02:25:42Z

Hi Steve and Alexei,

On Sun, Feb 4, 2018 at 6:17 AM, Steven Rostedt <rostedt@goodmis.org> 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 interested in this. From my understanding, it's basically
function tracing + filter + custom argument info, right?

Supporting arguments with complex type could be error-prone.
We need to prevent malfunctions by invalid inputs.

Thanks,
Namhyung