From: Pawel Moll <pawel.moll-5wv7dgnIgG8@public.gmane.org>
To: David Ahern <dsahern-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: Arnaldo Carvalho de Melo
<acme-f8uhVLnGfZaxAyOMLChx1axOck334EZe@public.gmane.org>,
Richard Cochran
<richardcochran-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Steven Rostedt <rostedt-nx8X9YLhiw1AfugRpC6u6w@public.gmane.org>,
Ingo Molnar <mingo-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
Peter Zijlstra <peterz-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>,
Paul Mackerras <paulus-eUNUBHrolfbYtjvyW6yDsg@public.gmane.org>,
John Stultz <john.stultz-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
"linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: [RFC 2/2] perf: Marker software event and ioctl
Date: Mon, 15 Sep 2014 18:18:37 +0100 [thread overview]
Message-ID: <1410801517.3817.13.camel@hornet> (raw)
In-Reply-To: <5415B790.5010607-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
On Sun, 2014-09-14 at 16:43 +0100, David Ahern wrote:
> >> Seems really similar to what I proposed in the past:
Yeah, it wasn't really hard to come with similar conclusions :-)
> >> https://lkml.org/lkml/2011/2/27/159
> >>
> >> Which was rejected.
> >
> > I took a look at that thread, but just barely, emphasis on that.
> >
> > Injecting something from userspace, a la ftrace, seems to be something,
> > as tglx mentioned, "buried" in that patchset.
>
> Thomas object to an ioctl buried deep in a patch -- newbie mistake.
>
> Peter objected to the ioctl https://lkml.org/lkml/2011/3/1/229
>
> It was not userspace injecting random data into the stream but rather
> forcing the sample to be generated and added to the stream.
I would like to hear from Peter and others. If not here, I'll get them
to talk next month on Linux Plumbers :-)
Pawel
next prev parent reply other threads:[~2014-09-15 17:18 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-12 11:48 [RFC 0/2] Yet another take at user/kernel time correlation problem Pawel Moll
2014-09-12 11:48 ` [RFC 1/2] perf: Add sampling of the raw monotonic clock Pawel Moll
[not found] ` <1410522513-1045-1-git-send-email-pawel.moll-5wv7dgnIgG8@public.gmane.org>
2014-09-12 11:48 ` [RFC 2/2] perf: Marker software event and ioctl Pawel Moll
[not found] ` <1410522513-1045-3-git-send-email-pawel.moll-5wv7dgnIgG8@public.gmane.org>
2014-09-12 12:43 ` Christopher Covington
[not found] ` <5412EA7A.9020807-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2014-09-12 12:57 ` Pawel Moll
2014-09-12 13:49 ` Arnaldo Carvalho de Melo
[not found] ` <20140912134910.GG1801-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2014-09-12 13:58 ` Pawel Moll
2014-09-12 16:19 ` Arnaldo Carvalho de Melo
[not found] ` <20140912161934.GJ1801-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2014-09-15 17:27 ` Pawel Moll
2014-09-15 18:31 ` Arnaldo Carvalho de Melo
[not found] ` <20140915183101.GE11199-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2014-09-16 16:33 ` Pawel Moll
2014-09-12 14:00 ` Christopher Covington
2014-09-12 17:37 ` David Ahern
[not found] ` <54132F63.1010401-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2014-09-12 20:44 ` Arnaldo Carvalho de Melo
2014-09-14 15:43 ` David Ahern
[not found] ` <5415B790.5010607-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2014-09-15 17:18 ` Pawel Moll [this message]
2014-09-16 7:44 ` Ingo Molnar
[not found] ` <20140916074421.GA21295-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2014-09-16 16:37 ` Pawel Moll
2014-09-16 17:58 ` Ingo Molnar
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