On Thu, 01 Nov 2007 15:46:41 +0000, linux-mips@xxxxxxxxxxxxxx wrote: > Author: Ralf Baechle <ralf@xxxxxxxxxxxxxx> Thu Nov 1 15:45:37 2007 +0000 > Commit: 0a354a30fe552b78a4db0873c19d8936551cc158 > Gitweb: http://www.linux-mips.org/g/linux/0a354a30 > Branch: master > > This is the clock rate of the i8253 PIT. A MIPS system may not have > a PIT by the symbol is used all over the kernel including some APIs. > So keeping it defined to the number for the PIT is the only sane thing > for now. The CLOCK_TICK_RATE is used for ACTHZ, TICK_NSEC, etc. At least for i8253-free platforms, It looks a value multiple of HZ would be better for such constants, assuming we have dyntick or accurate HZ clockevents. How about something like this? diff --git a/include/asm-mips/timex.h b/include/asm-mips/timex.h index 5816ad1..e9622b6 100644 --- a/include/asm-mips/timex.h +++ b/include/asm-mips/timex.h @@ -18,7 +18,11 @@ * So keeping it defined to the number for the PIT is the only sane thing * for now. */ +#ifdef CONFIG_I8253 #define CLOCK_TICK_RATE 1193182 +#else +#define CLOCK_TICK_RATE 1024000 /* multiple of HZ */ +#endif /* * Standard way to access the cycle counter.
