Re: How to find out which kernel release contains some code

["Randy.Dunlap" <rddunlap@osdl.org>]

On Mon, 13 Sep 2004 11:41:50 -0400 (EDT) Alan Stern wrote:

| Randy:
| 
| Is there any simple easy way to find out in which kernel release a 
| particular line of code first appeared?  Or to find out whether that line 
| is or isn't present in a particular release?

Hi Alan,

I usually try to use BK's web interface "Browse the source tree"
for this:
  http://linux.bkbits.net:8080/linux-2.5/src?nav=index.html

E.g., I can browse uhci-hcd.c, version 1.89, and see on what date
and who it thinks was responsible for a line of source code:
http://linux.bkbits.net:8080/linux-2.5/anno/drivers/usb/host/uhci-hcd.c%401.89?nav=index.html|src/.|src/drivers|src/drivers/usb|src/drivers/usb/host
But that won't say what kernel version it is (first) contained in.
Just a merge date.

| The timestamps in BitKeeper don't help much.  They seem to reflect the 
| first time the code was put into _any_ BitKeeper repository, not the time 
| it was entered into Linus's tree.

Yes, that bugs me too.

| The web interface to the linux-2.6 tree 
| doesn't offer any way to view a particular source file as of a particular 
| release tag.
| 
| I don't fancy downloading lots and lots of enormous patch files, searching
| for one small entry.  Or lots of kernel source tarballs, for that matter.
| 
| There's got to be an easier way.  Do you know of one?

Not really.  You could ask on the bk-users mailing list.  See here:
  http://www.bitkeeper.com/Support.Mailing.html

Or there may be features in the commercial version of BK that help
out with this more that the free version does.  I dunno.

--
~Randy