Messages in this thread | | | From | Arnd Bergmann <> | Subject | Re: [PATCH 04/27] asm-generic: add legacy I/O header files | Date | Fri, 1 May 2009 15:56:38 +0200 |
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On Friday 01 May 2009, Alan Cox wrote: > They shouldn't define it - we want those invalid cases to error. Stick > CLOCK_TICK_RATE in the depths of the x86 arch includes and then we can > fix the other cases properly. Either the device has an independant clock > of the same frequency (some watchdogs do this), it relies upon a > motherboard timer in which case the platform can define CLOCK_TICK_RATE > (or a better name for it), or it doesn't have any meaning in which case > we *want* it not to compile.
I just noticed that linux/jiffies.h does not compile without a definition of CLOCK_TICK_RATE, so that's probably why every architecture defines it. If I find a way to remove that dependency, I can simply leave out the CLOCK_TICK_RATE from the generic header. I have not yet understood the relation of jiffies to CLOCK_TICK_RATE, but my suspicion is that it's not good for architectures that do not have a clock tick.
Arnd <><
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