Date: Sat, 15 Nov 2014 10:43:32 -0800 From: Steve Kargl <sgk@troutmask.apl.washington.edu> To: freebsd-current@freebsd.org Subject: Finding a rogue src/sys commit with bisection? Message-ID: <20141115184332.GA30344@troutmask.apl.washington.edu>
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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). Rinse and repeat. -- Steve
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