Date: Wed, 18 Feb 2015 18:53:54 +0100
From: Ingo Molnar <mingo@kernel.org>
To: Stephane Eranian <eranian@google.com>
Cc: linux-kernel@vger.kernel.org, acme@redhat.com, peterz@infradead.org,
        mingo@elte.hu, ak@linux.intel.com, jolsa@redhat.com,
        namhyung@kernel.org, cel@us.ibm.com, sukadev@linux.vnet.ibm.com,
        sonnyrao@chromium.org, johnmccutchan@google.com, dsahern@gmail.com,
        adrian.hunter@intel.com, pawell.moll@arm.com
Subject: Re: [PATCH v2 4/4] clock: add perf_clock posix clock
Message-ID: <20150218175354.GA31963@gmail.com>
References: <1424280109-9801-1-git-send-email-eranian@google.com>
 <1424280109-9801-5-git-send-email-eranian@google.com>
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* Stephane Eranian <eranian@google.com> wrote:

> This patch is a re-packaging of David's Ahern
> posix perf clock available here:
> 
> 	https://github.com/dsahern/linux/blob/perf-full-monty/README.ahern
> 
> The patch itself is based on Pawel Moll's original post:
> 
> 	https://lkml.org/lkml/2013/3/14/523
> 
> The new clock is call PERF_CLOCK. To use it
> 
> 	#include <time.h>
> 	#include <linux/time.h>
> 
> 	struct timespec ts;
> 
> 	clock_gettime(PERF_CLOCK, &ts);

So what's the justification for this new clock, as opposed 
to say CLOCK_MONOTONIC?

Thanks,

	Ingo
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