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SubjectRe: Re: [RFC PATCH 00/28] ktap: A lightweight dynamic tracing tool for Linux
On Tue, Apr 08, 2014 at 04:40:36PM +0900, Masami Hiramatsu wrote:
> (2014/04/07 22:55), Peter Zijlstra wrote:
> > On Wed, Apr 02, 2014 at 09:42:03AM +0200, Ingo Molnar wrote:
> >> I'd suggest using C syntax instead initially, because that's what the
> >> kernel is using.
> >>
> >> The overwhelming majority of people probing the kernel are
> >> programmers, so there's no point in inventing new syntax, we should
> >> reuse existing syntax!
> >
> > Yes please, keep it C, I forever forget all other syntaxes. While I have
> > in the past known other languages, I never use them frequently enough to
> > remember them. And there's nothing more frustrating than having to fight
> > a tool/language when you just want to get work done.
>
> Why wouldn't you write a kernel module in C directly? :)
> It seems that all what you need is not a tracing language nor a bytecode
> engine, but an well organized tracing APIs(library?) for writing a kernel
> module for tracing...

Most my kernels are CONFIG_MODULE=n :-) Also, I never can remember how
to do modules.

That said; what I currently do it hack the kernel with debug bits and
pieces and run that, which is effectively the same. Its just that its
impossible to save/share these hacks in any sane fashion.



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