linux-kernel - Re: [PATCH v2 0/7] perf trace pagefaults

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Message-ID: <20140620150318.GK15620@stfomichev-desktop.yandex.net>
Date:	Fri, 20 Jun 2014 19:03:18 +0400
From:	Stanislav Fomichev <stfomichev@...dex-team.ru>
To:	Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:	a.p.zijlstra@...llo.nl, paulus@...ba.org, mingo@...hat.com,
	dsahern@...il.com, jolsa@...hat.com,
	xiaoguangrong@...ux.vnet.ibm.com, yangds.fnst@...fujitsu.com,
	adrian.hunter@...el.com, namhyung@...nel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 0/7] perf trace pagefaults

> Just to clarify here, those slides came from slides I made and in turn
> the whole idea about pagefaults tracing I got from the trace prototype
> that Thomas Gleixner implemented in his 'trace'  utility, described
> here:
> 
>   Announcing a new utility: 'trace'
>   http://lwn.net/Articles/415728/
> 
> The comments section has lots of interesting ideas, some you may find
> interesting to implement :-)
> 
> There is a branch in my tree with the branch tglx did his work on:
> 
> https://git.kernel.org/cgit/linux/kernel/git/acme/linux.git/log/?h=tmp.perf/trace2
Wow, thanks, I tried to search lkml for any presence of
patches/discussion about these slides, but couldn't find anything, thanks for
pointing it out.

I really like 'blocking/preempted' indication and of course I miss
pointers decoding.

Did anyone really think about decoding pointers and how we can
implement it (like dumping them upon entering a syscall and then
using inside the perf trace?)?
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