From: Tony Lindgren <tony@atomide.com>
Date: Fri, 29 Sep 2006 07:45:10 +0000 (+0300)
Subject: ARM: OMAP: Avoid updating system time for sub-jiffy interrupts
X-Git-Tag: v2.6.18-omap1~25
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=afdf472d20737f91f098c6bc64f6170e8f739405;p=pandora-kernel.git

ARM: OMAP: Avoid updating system time for sub-jiffy interrupts

Updating system time and reprogramming timer can cause latency
issues on busy systems with lots of interrupts with constant
updating of time and reprogramming the system timer.

If a non-timer dyntick interrupt happens within a jiffy from
the last interrupt, updating time and reprogramming the timer
is unnecessary as we will get a timer interrupt soon anyways.

Signed-off-by: Tony Lindgren <tony@atomide.com>
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