linux-kernel - Re: [PATCH RT 0/3] hwlat-detector: Have it actually find hardware latency

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Message-ID: <20130821155945.GC16913@linutronix.de>
Date:	Wed, 21 Aug 2013 17:59:45 +0200
From:	Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	linux-kernel@...r.kernel.org,
	linux-rt-users <linux-rt-users@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Carsten Emde <C.Emde@...dl.org>,
	John Kacur <jkacur@...hat.com>,
	Clark Williams <clark.williams@...il.com>
Subject: Re: [PATCH RT 0/3] hwlat-detector: Have it actually find hardware
 latency

* Steven Rostedt | 2013-08-19 17:33:24 [-0400]:

>Thi patch series fixes up hwlat-detector to check the entire path
>of time for a latency being hit, instead of the quick check between
>two time stamps.
>
>It also uses the trace_local_clock() if available, which is much lighter
>weight than ktime_get() which might produce false positives. As
>the trace clock is used to detect irq latencies, it's suitable for
>hardware latency.
>
>Finally, stop machine is removed and the test is run by a single thread.

Applied, thanks.

Sebastian
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