Re: [PATCH 5/5 v2] ARM: OMAP1: recalculate loops per jiffy after dpll1 reprogram

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Tue, Nov 29, 2011 at 01:25:32AM +0100, Janusz Krzysztofik wrote:
> However, the result of cpufreq_scale() differs from that of
> (re)calibrate_delay() by ca. 6%, i.e., 70.40 vs. 74.54. Please advise if
> this approximation is acceptable.

You don't say which figure is what.

Note that calibrate_delay() is itself inaccurate - the loops_per_jiffy
is the number of loops which can be executed between two timer ticks
_minus_ the time to process the timer interrupt itself.  So, it's
actually always a little less than the theoretical number of loops
within that time period.
--
To unsubscribe from this list: send the line "unsubscribe linux-omap" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [Linux Arm (vger)]     [ARM Kernel]     [ARM MSM]     [Linux Tegra]     [Linux WPAN Networking]     [Linux Wireless Networking]     [Maemo Users]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Trails]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux