Re: [PATCH 1/8] perf: Allow to block process in syscall tracepoints

From: Peter Zijlstra
Date: Fri Dec 07 2018 - 10:11:16 EST


On Fri, Dec 07, 2018 at 08:41:18AM -0500, Steven Rostedt wrote:
> On Fri, 7 Dec 2018 09:58:39 +0100
> Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:
>
> > These patches give no justification *what*so*ever* for why we're doing
> > ugly arse things like this. And why does this, whatever this is, need to
> > be done in perf?
> >
> > IOW, what problem are we solving ?
>
> I guess the cover letter should have had a link (or copy) of this:
>
> http://lkml.kernel.org/r/20181128134700.212ed035@xxxxxxxxxxxxxxxxxx

That doesn't even begin to explain. Who cares about strace and why? And
why is it such a bad thing to loose the occasional record etc..