On Fri, 3 Jun 2011, Soho Soho123 wrote: > Dear Alan, > > Ok, I will apply patch and test again. Since time difference issue, I > can not do test now. It will be done when I back to office. > In advance, the question: > get_cpu_cycles() just get current count, right? Right. You'll have to replace that with the actual routine you use to read the CPU cycle counter. > it is not necessary to do calculation of (exit point - enter point), right? Right, you don't have to do it. > or it also do the calculation then retrun the count? The patch already does the calculation. You can see it in these lines: + c2 = get_cpu_cycles(); + stats[next_stat].cpu_cycle_count = c2 - cpu_cycles; + cpu_cycles = c2; Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
