On Thu, Sep 22, 2005 at 05:42:50PM -0700, Andrew Morton wrote:
> Alexey Dobriyan <[email protected]> wrote:
> > Quick, Dirty, Fragile, Should Work (TM).
>
> hm, I wouldn't use it. The problem is that a _lot_ of patches in -mm don't
> fscking compile.
>
> bix:/usr/src/25> grep '[-]fix.patch' series | wc
> 72 72 2905
>
> If your bisection happens to land you between foo.patch and foo-fix.patch,
> you have a *known bad* kernel. What's the point in testing it?
>
> So I'd recommend the smarter approach: copy the series file to ~/hunt, edit
> ~/hunt and do the bisection by hand, marking the good and bad points in
> ~/hunt as you go.
Done. If this isn't what you want, tell me so.
-----------------------------------------------------------------------
Marking patches as good or bad is separated from applying/reverting.
You can edit "series-bisect-mm" manually, then do "./bisect-mm apply"
and it will change tree to the new middle point.
Manual editing boils down to:
.--> "good fix-typo.patch"
"fix-typo.patch" --<
`--> "bad fix-typo.patch"
Signed-off-by: Alexey Dobriyan <[email protected]>
---
bisect-mm | 108 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 108 insertions(+)
--- a/bisect-mm
+++ b/bisect-mm
@@ -0,0 +1,108 @@
+#!/bin/sh
+#
+# Bisecting through -mm with quilt.
+#
+# Assumptions:
+# * X + linus.patch works
+# * X-mmY doesn't
+# * broken-out -mmY is in $QUILT_PATCHES
+#
+# Usage:
+# ./bisect-mm start mark linus.patch as good, last patch as bad
+# |
+# +------>------+
+# | |
+# | [manually edit series-bisect-mm: ]
+# | [mark known good patches as "good $GOOD.patch" ]
+# ^ [mark known bad patches as "bad $BAD.patch" ]
+# | |
+# | ./bisect-mm apply quilt will apply/revert stuff
+# | |
+# +------<------+
+# | |
+# | rebuild
+# | retest
+# ^ |
+# | ./bisect-mm {bad,good}
+# | |
+# | |
+# +------<------+----> Sucker is fix-typo.patch
+
+usage()
+{
+ echo "usage: bisect-mm [start | good | bad | apply]" >&2
+ exit 1
+}
+
+SERIES=series-bisect-mm
+
+apply()
+{
+ quilt push -q | sed -e "s/^Applying patch/+/" -e "/^Now at patch/d"
+}
+
+revert()
+{
+ quilt pop -q | sed -e "s/^Removing patch/-/" -e "/^Now at patch/d"
+}
+
+case "$#" in
+0)
+ usage
+ ;;
+*)
+ case "$1" in
+ start)
+ echo -n "good " >$SERIES
+ quilt series >>$SERIES
+ sed -i "s/$(tail -n1 $SERIES)/bad &/" $SERIES
+ echo "+ $SERIES"
+ ;;
+ bad)
+ TOP=$(quilt top)
+ sed -i "s/.*$TOP/bad $TOP/" $SERIES
+ GOOD=$(cat -n $SERIES | grep "good " | tail -n1 | awk '{print $1}')
+ BAD=$(cat -n $SERIES | grep "bad " | head -n1 | awk '{print $1}')
+ if [ $(($BAD - $GOOD)) = 1 ]; then
+ echo -n "Sucker is "
+ quilt top
+ exit 0
+ fi
+ ;;
+ good)
+ TOP=$(quilt top)
+ sed -i "s/.*$TOP/good $TOP/" $SERIES
+ GOOD=$(cat -n $SERIES | grep "good " | tail -n1 | awk '{print $1}')
+ BAD=$(cat -n $SERIES | grep "bad " | head -n1 | awk '{print $1}')
+ if [ $(($BAD - $GOOD)) = 1 ]; then
+ apply
+ echo -n "Sucker is "
+ quilt top
+ exit 0
+ fi
+ ;;
+ apply)
+ GOOD=$(cat -n $SERIES | grep "good " | tail -n1 | awk '{print $1}')
+ BAD=$(cat -n $SERIES | grep "bad " | head -n1 | awk '{print $1}')
+ MIDDLE=$((($GOOD + $BAD) / 2))
+ TOP=$(quilt top)
+ CUR=$(quilt applied | wc -l)
+
+ if [ $MIDDLE -lt $CUR ]; then
+ while [ $MIDDLE -lt $(quilt applied | wc -l) ]; do
+ revert
+ done
+ quilt top
+ else
+ while [ $MIDDLE -gt $(quilt applied | wc -l) ]; do
+ apply
+ done
+ fi
+ echo "[$GOOD .. => $MIDDLE <= .. $BAD]"
+ ;;
+ *)
+ usage
+ ;;
+ esac
+ ;;
+esac
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
| |
 |