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(parent: 6ee3116) | patch
ARM: OMAP: Avoid updating system time for sub-jiffy interrupts
authorTony Lindgren <tony@atomide.com>
Thu, 7 Dec 2006 22:01:23 +0000 (14:01 -0800)
committerTony Lindgren <tony@atomide.com>
Tue, 3 Apr 2007 17:39:00 +0000 (13:39 -0400)
commite22c8fcc8410098be68975b6fd34e01de6a7c681
tree219f7a5981d1ce729db49d3d24e2a189fa6efee0tree | snapshot
parent6ee3116b9174f2ef6ce0bab8cc48b39c71940fafcommit | diff
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>
arch/arm/plat-omap/timer32k.c diff | blob | history
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