lkml.org 
[lkml]   [2014]   [Apr]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [RFC PATCH] time: Fix truncation in jiffies_to_usecs()
From
On Mon, Apr 7, 2014 at 3:25 PM, Tony Luck <tony.luck@intel.com> wrote:

> c) If not this ... then what? Separate routine to convert large numbers
> of jiffies to usec/nsecs? Should we make the existing one barf when
> handed a number that overflows?

Having thought about this a bit more - I'm leaning towards leaving
jiffies_to_usecs() alone, but using it as a model for a from-scratch
implementation of:
u64 jiffies_to_nsecs(const unsigned long j)
{
}

This is what the uptime tracer actually needs - and there is only
one user of jiffies_to_nsecs() to worry about.

-Tony


\
 
 \ /
  Last update: 2014-04-08 08:21    [W:0.179 / U:30.372 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site