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Subject: Re: [PATCH 2/4] trace: prepare to collect call chains of
 non-current task.
From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Andrew Vagin <avagin@openvz.org>
Cc: linux-kernel@vger.kernel.org, Steven Rostedt <rostedt@goodmis.org>,
        Frederic Weisbecker <fweisbec@gmail.com>,
        Ingo Molnar <mingo@redhat.com>, Paul Mackerras <paulus@samba.org>,
        Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Date: Tue, 27 Sep 2011 16:02:31 +0200
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On Mon, 2011-09-26 at 19:55 +0400, Andrew Vagin wrote:
> +perf_callchain_kernel(struct perf_callchain_entry *entry,
> +                       struct task_struct *tsk, struct pt_regs *regs) 

Hmm, we have event->ctx->task, but I guess for per-cpu events that's
useless..