Date: Wed, 25 Jun 2014 15:33:10 +0400
From: Stanislav Fomichev <stfomichev@yandex-team.ru>
To: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: a.p.zijlstra@chello.nl, paulus@samba.org, mingo@redhat.com,
        dsahern@gmail.com, jolsa@redhat.com, xiaoguangrong@linux.vnet.ibm.com,
        yangds.fnst@cn.fujitsu.com, adrian.hunter@intel.com,
        namhyung@kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/5] perf trace: add support for pagefault tracing
Message-ID: <20140625113310.GD21788@stfomichev-desktop.yandex.net>
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> > Also, have you considered using:
> > 
> > [root@zoo ~]# perf list exceptions:page_fault*
> >   exceptions:page_fault_user                         [Tracepoint event]
> >   exceptions:page_fault_kernel                       [Tracepoint event]
> > [root@zoo ~]#
> > 
> > Instead? I need to check if they're completely equivalent to what we
> > need here...
> Hm, didn't know there are two kinds of fault events :-/
> But it seems these are x86 only.
Maybe we can use these x86 only events to trace userspace fault duration?
It seems we can pair exceptions:page_fault_user and
context_tracking:user_enter. But it's just a theory, need to verify...
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