On Tue, 28 Oct 2014, Ley Foon Tan wrote: > On Sel, 2014-10-28 at 10:23 +0100, Arnd Bergmann wrote: > > On Tuesday 28 October 2014 10:46:29 Ley Foon Tan wrote: > > > On Sun, Oct 26, 2014 at 5:10 AM, Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote: > > > > On Fri, 24 Oct 2014, Ley Foon Tan wrote: > > > >> +#ifndef _ASM_NIOS2_TIMEX_H > > > >> +#define _ASM_NIOS2_TIMEX_H > > > >> + > > > >> +typedef unsigned long cycles_t; > > > >> + > > > >> +extern cycles_t get_cycles(void); > > > >> + > > > >> +#define ARCH_HAS_READ_CURRENT_TIMER > > > > > > > > Why does NIOS need that? Does it have a hardware implementation > > > > dependent clock frequency which needs to be calibrated at boot time? > > > This is suggestion from Arnd to use read_current_timer instead of using > > > expensive delay loop calibration during boot. > > > > My mistake, sorry. I think the right way is to define > > calibrate_delay_is_known() rather than read_current_timer(), I was > > getting confused by the ARM implementation that does both. > Hi Arnd, > No problem, I can change that. But, seem that we don't need to have > calibrate_delay_is_known() as well. We can just set "lpj_fine" variable, > arm64 uses this. Please do so and resend the result so I can have another look and add my reviewed tag then. Thanks, tglx -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
