From: Mark Gross <mgross@linux.jf.intel.com>
Organization: Intel
To: ganzinger@mvista.com, George Anzinger <george@mvista.com>,
       Arjan van de Ven <arjanv@redhat.com>
Subject: Re: [ANNOUNCE] high-res-timers patches for 2.6.6
Date: Mon, 14 Jun 2004 08:28:08 -0700
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Cc: ganzinger@mvista.com, Geoff Levand <geoffrey.levand@am.sony.com>,
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       linux-kernel@vger.kernel.org
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On Friday 11 June 2004 15:33, George Anzinger wrote:
> I have been thinking of a major rewrite which would leave this code alone,
> but would introduce an additional list and, of course, overhead for
> high-res timers. This will take some time and be sub optimal, so I wonder
> if it is needed.

What would your goal for the major rewrite be?
Redesign the implementation?
Clean up / re-factor the current design?
Add features?

I've been wondering lately if a significant restructuring of the 
implementation could be done.  Something bottom's up that enabled changing / 
using different time bases without rebooting and coexisted nicely with HPET.

Something along the lines of;
* abstracting the time base's, calibration and computation of the next 
interrupt time into a polymorphic interface along with the implementation of 
a few of your time bases (ACPI, TSC) as a stand allown patch.
* implement yet another polymorphic interface for the interrupt source used by 
the patch, along with a few interrupt sources (PIT, APIC, HPET <-- new )
* Implement a simple RTC-like charactor driver using the above for testing and 
integration.  
* Finally a patch to integrate the first 3 with the POSIX timers code.

What do you think?


--mgross

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