Kernel 'bisection'

Chris cpollock at embarqmail.com
Sat Feb 14 16:50:51 UTC 2015


On Sat, 2015-02-14 at 15:29 +0000, Colin Law wrote:
> On 14 February 2015 at 13:41, Chris <cpollock at embarqmail.com> wrote:
> > On Sat, 2015-02-14 at 13:05 +0000, Peter Waller wrote:
> >> Briefly, bisection is a way of taking a long list of 1000's of
> >> changes, and arranging things so that you only have to test more like
> >> 10 of them, because you test midpoints. (and 2^10 ~ 1000).
> >>
> >>
> >> More detail:
> >>
> >>
> >> http://alblue.bandlem.com/2011/07/git-tip-of-week-git-bisect.html
> >>
> > Here's the same bug reported at freedesktop.org -
> > https://bugs.freedesktop.org/show_bug.cgi?id=75394 which shows it
> > affects multiple 'flavors'.
> 
> Since it seems it can sometimes be weeks between flavours I don't see
> how you can do a git bisection on the kernel as you might have to run
> it for weeks on each version.
> 
> However can I first check that there is a known good version of the
> kernel which does not show the problem?  If so can you not just stick
> with that version in the hope the bug will get fixed at some point in
> the future?
> 
> Colin
> 
That's what I was thinking about doing Colin, AFAIK 3.13.0-35 was the
last kernel that did not show this problem. I guess what I'll do this
weekend is download and regress to it for awhile and see what happens.
I've been trying to find the three files I need to -35 but can't seem to
find them. I looked here
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.13-trusty/ but really
don't see what I'm looking for. Any advice?

Chris

-- 
Chris
KeyID 0xE372A7DA98E6705C
31.11°N 97.89°W (Elev. 1092 ft)
10:48:38 up 21 min, 2 users, load average: 0.38, 0.41, 0.50
Ubuntu 14.04.1 LTS, kernel 3.13.0-45-generic




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