On Mon, Sep 26, 2005 at 11:07:00AM -0700, Badari Pulavarty wrote:
> 2.6.14-rc2-mm1 doesn't seem to boot on my AMD64 box. It hangs
> while probing "ide" disks. I spent time looking at it and
> here is what I know so far.
>
> 2.6.13: works fine
> 2.6.13-mm series: works fine
> 2.6.14-rc2: works fine
> 2.6.14-rc2 + linus.patch (from -mm1): works fine
> 2.6.14-rc2-mm1: hangs on boot
>
> I looked through all the changes in "drivers/ide/" in -mm
> and none of them seemed to cause the problem. I added tracing
> to figure out whats happening. It hangs while doing, "do_probe()"
> Here is the calling sequence:
>
> ide_scan_pcidev()
> amd74xx_probe()
> ide_setup_pci_device()
> probe_hwif_init_with_fixup()
> probe_hwif()
> probe_for_drive()
> do_probe()
>
> If anyone has fixes/debug to try, please let me know.
If you have quilt(1) installed and don't mind a couple recompiles, you
can do a bisection on -mm patches:
1) Unpack clean 2.6.14-rc2.
2) Apply attached patch to it ("bisect-mm" script).
3) chmod 755 ./bisect-mm
4) cp -r $WHATEVER/broken-out patches # copy broken out -mm to the top
# level directory
"Dumb" mode:
5) ./bisect-mm start
6) ./bisect-mm apply
# wait until patches are applied
# or reverted
7) rebuild
reboot
8) ./bisect-mm good # if it boots fine, or
./bisect-mm bad
goto 6
Continue until it says "Sucker is ...".
You can also enter "smart" mode after reading comment at the beginning
of the script. It can save your some recompiles.
[PATCH -mm v2] Bisecting through -mm with quilt
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
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