lkml.org 
[lkml]   [2010]   [Nov]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [ANNOUNCE] New utility: 'trace'

* Peter Zijlstra <peterz@infradead.org> wrote:

> On Tue, 2010-11-16 at 22:59 +0100, Ingo Molnar wrote:
> >
> >
> > Would you be interested in helping out with (and testing) such a more generic
> > approach?
>
> how about having perf-record open a named pipe and rewriting everything that comes
> in through that as an event and storing it in the buffer?

Yeah, that would work too in most cases - except if there's no VFS connection
between tracer and tracee. (as it might be in the case of say chroot environments,
etc.)

I think it's better to have kernel solutions that dont modify the VFS beyond the
trace.data session info. A task could thus generate a user-space event without
having to negotiate with the tracer.

Thanks,

Ingo


\
 
 \ /
  Last update: 2010-11-16 23:11    [from the cache]
©2003-2011 Jasper Spaans