From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tony Lindgren Subject: Re: [PATCH] ARM: OMAP: hrtimers/dyntick support for OMAP2 GP-timers Date: Wed, 16 May 2007 10:47:13 -0700 Message-ID: <20070516174712.GH20297@atomide.com> References: <20070511003036.203942772@mvista.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20070511003036.203942772@mvista.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-omap-open-source-bounces@linux.omap.com Errors-To: linux-omap-open-source-bounces@linux.omap.com To: Kevin Hilman Cc: linux-omap-open-source@linux.omap.com List-Id: linux-omap@vger.kernel.org * Kevin Hilman [070510 17:32]: > This patch converts the GP-timer layer to use the > clocksource/clockevent interface provided by the new GENERIC_TIME and > GENERIC_CLOCKEVENT layers. > > Doing so enables use of the new hrtimers and dynticks features on > OMAP2. > > A quick test of hrtimers using Thomas Gleixner's cyclictest on a > 2430SDP shows min/avg/max userspace latencies of 38/50/850 usec. > > A quick test of dyntick using /proc/timer_stats on an idle system > shows an avg. of ~5 events/sec over a 10 second period. Pushing today. Tony