On Fri, 2009-06-12 at 00:03 -0700, Richard Henderson wrote:Interesting.
john stultz wrote:
I suspect the alpha arch could even be further improved to provide andUnfortunately this isn't possible. The rpcc value is only 32-bits wide,
rpcc() based clocksource, but not having the hardware, I don't feel
comfortable attempting the more complicated conversion (but I'd be glad
to help if anyone else is interested).
and so rolls over in approx 3 to 4 seconds. Thus all the contortions to
try and use the truncated value for sub 1 second adjustments.
That's actually ok. The ACPI PM clocksource on x86 is only 24 bits wide
and wraps every 5 seconds. The generic timekeeping code handles the
wrapping and accumulation for you.
Might you create a patch that does this conversion and apply it on topUnfortunately I don't have working hardware anymore. Perhaps Ivan will be able to help here.