Re: Request for DIscussion: Cpufreq logging, and frequency floors

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On Sun, Oct 23, 2011 at 12:48:03PM +0100, Mark Brown wrote:
 > On Fri, Oct 21, 2011 at 02:31:57PM -0700, Steven Finney (Palm GBU) wrote:
 > 
 > >  2) The ability to keep a diagnostic log of all the frequency changes so, 
 > > e.g., it's possible to determine if bad behavior (e.g. dropouts) is
 > > correlated with a low frequency.
 > 
 > This is a really good and useful idea but it seems to me like it would
 > be better done with the standard trace subsystem - that provides good
 > facilities for enabling and disabling the trace as needed and would make
 > it easy to tie in with the other subsystems that are in play.
 
Indeed. This sounds like the direction to go towards. Having played a little
with Steven Rostedt's kernelshark tool, I could see interesting things coming
from being able to correlate transitions with other system events graphically.

	Dave

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