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Date:      Sat, 15 Nov 2014 19:46:09 +0100
From:      Mateusz Guzik <mjguzik@gmail.com>
To:        Steve Kargl <sgk@troutmask.apl.washington.edu>
Cc:        freebsd-current@freebsd.org
Subject:   Re: Finding a rogue src/sys commit with bisection?
Message-ID:  <20141115184609.GB22467@dft-labs.eu>
In-Reply-To: <20141115184332.GA30344@troutmask.apl.washington.edu>
References:  <20141115184332.GA30344@troutmask.apl.washington.edu>

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On Sat, Nov 15, 2014 at 10:43:32AM -0800, Steve Kargl wrote:
> Before I totally hose by /usr/src directory, does anyone
> have some guidelines on doing a binary search for a rogue
> commit in /usr/src/sys?.  Either cam or usb (or acpi?) has
> broken the ability to remove a external USB device once it
> is plugged into a usb port on my Dell Latitude D530 laptop.
> I know that a good kernel can be built with r271273 and
> a bad kernel comes from (nearly) top of tree at r274456.
> 
> I assume I need to do somthing along the lines
> 
> % cd /usr/src/sys
> % svn merge -r 274456:272864    (half way point between good and bad)
> (build kernel and test)
> % cd /usr/src/sys
> % svn revert -R .
> (assume 272864 builds working kernel)
> % svn merge -r 274456:273660   (1/2 point between 272864 and 274456).
> 

http://search.cpan.org/dist/App-SVN-Bisect/bin/svn-bisect

Unteste though, they keyword to use bisect.

In absolutely worst case yu can check out git tree and bisect that :->

-- 
Mateusz Guzik <mjguzik gmail.com>



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