[PATCH] ppc32: add CONFIG_HZ

Segher Boessenkool segher at kernel.crashing.org
Tue Aug 30 01:31:20 EST 2005

>> While ppc32 has the CONFIG_HZ Kconfig option, it wasnt actually being
>> used. Connect it up and set all platforms to 250Hz.  This pretty much
>> mimics the ppc64 patch from Anton Blanchard.
> Why do we keep cranking up this clock frequency?  Do we really need
> it running that fast?  Is it time for someone with RTOS experience to
> implement a real scheduled clock queue in Linux instead of just
> wasting interrupts decrementing a counter waiting for the next
> event to expire?  :-)

Sure.  And some people are actually working on that.  But
on common x86 hardware, it seems to be a really really hard
thing to do.  Would be a lot easier in PowerPC of course...


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