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Date: Wed, 22 Apr 2015 11:44:51 -0400
From: Steven Rostedt <rostedt@goodmis.org>
To: Ron Rechenmacher <ron@fnal.gov>
Cc: David Ahern <dsahern@gmail.com>,
        Arnaldo Carvalho de Melo <arnaldo.melo@gmail.com>,
        Christoph Hellwig <hch@infradead.org>, linux-kernel@vger.kernel.org,
        Arjan van de Ven <arjan@linux.intel.com>,
        Namhyung Kim <namhyung@kernel.org>, Pawel Moll <pawel.moll@arm.com>,
        Stephane Eranian <eranian@google.com>
Subject: Re: [PATCH] tracing: Export key trace event symbols
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On Wed, 22 Apr 2015 09:36:20 -0600
David Ahern <dsahern@gmail.com> wrote:

> One of the key requirements is a common time basis (e.g., 
> CLOCK_MONOTONIC or PERF_CLOCK) to be able to merge the events properly. 
> I have a kernel module that exports perf_clock to userspace via 
> clock_gettime; the 4.1 kernel should have the code that allows the clock 
> id to be specified providing a solution to this problem.

Ron,

I should have warned you. This is normal Linux kernel development.
Someone posts a simple patch to make something of there's work better,
and it ends up becoming a massive undertaking to come up with a solution
that makes Linux in general a better operating system ;-)

-- Steve