lkml.org 
[lkml]   [2013]   [Sep]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] /dev/random: Insufficient of entropy on many architectures
On Tue, Sep 10, 2013 at 01:46:21PM -0700, John Stultz wrote:
>
> We do read the clocksource fairly frequently though, so rather then
> re-reading on each interrupt, could you instead re-use the points at
> interrupt time where we already read the clocksource, like in
> hrtimer_interrupt()?

How often is that time updated? Is there some documentation whree I
can understand how this works? I confess to be pretty ignorant about
the details of how our time keeping systems work inside Linux.

Same question for sched_clock(); what are its guarantees, both in
terms of granularity and cost of overhead. Is there any comprehensive
documentation that I should be reading?

Thanks,

- Ted


\
 
 \ /
  Last update: 2013-09-10 23:21    [W:0.229 / U:0.020 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site