linux-kernel - Re: Alternative to 'git bisect visualize'?

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Message-ID: <20070410100347.44657750@localhost>
Date:	Tue, 10 Apr 2007 10:03:47 +0200
From:	Paolo Ornati <ornati@...twebnet.it>
To:	"Stuart MacDonald" <stuartm@...necttech.com>
Cc:	<linux-kernel@...r.kernel.org>
Subject: Re: Alternative to 'git bisect visualize'?

On Mon, 9 Apr 2007 17:10:23 -0400
"Stuart MacDonald" <stuartm@...necttech.com> wrote:

> My problem is that I don't have wish/tk installed. Is there a
> text-based alternative to visualize that I can use? Or is there a
> different method to locate a nearby commit?
> 
> The answer may involve something as simple as looking at some git
> state; I am a git newbie, and reading the docs hasn't helped any, so I
> won't be surprised to find out I'm overlooking something really
> obvious.

I think this should work:

1) look at "git-bisect log" and take the last good/bad pair

2) "cat .git/refs/heads/bisect" to see where you are now

3) git-log --pretty=oneline GOOD..BAD

4) search for the current commit (found in #2) with "/CURRENT_COMMIT",
now move around and choose another commit to test

5) git-reset --hard COMMIT_TO_TEST


Example:

$ git-bisect start
$ git-bisect good v2.6.17
$ git-bisect bad v2.6.18
Bisecting: 3400 revisions left to test after this
[2a2ed2db353d949c06b6ef8b6913f65b39111eab] Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild

# 2a2ed2db353d949c06b6ef8b6913f65b39111eab doesn't compile/boot ?

$ git-bisect log
git-bisect start
# good: [8ba130df4b67fa40878ccf80d54615132d24bc68] Linux v2.6.17
git-bisect good 8ba130df4b67fa40878ccf80d54615132d24bc68
# bad: [119248f4578ca60b09c20893724e10f19806e6f1] Linux v2.6.18. Arrr!

$ git-log --pretty=oneline 8ba130df4b67fa40878ccf80d54615132d24bc68..119248f4578ca60b09c20893724e10f19806e6f1

search for "2a2ed2db353d949c06b6ef8b6913f65b39111eab":

aa4148cfc7b3b93eeaf755a7d14f10afaffe9a96 [PATCH] devfs: Remove devfs support from the serial subsystem
bdaf8529385d5126ef791e8f1914afff8cd59bcf [PATCH] devfs: Remove devfs from the init code
a29641883f57f36424e3219ae9ff48dd6cd34de0 [PATCH] devfs: Remove devfs from the partition code
5c3927dc3468f47b803c9e1bb82cbed2bbd411ab [PATCH] devfs: Remove devfs documentation from the kernel tree
d8deac5094988c7ad1127ee61f52c59a952fcabb [PATCH] devfs: Remove devfs from the kernel tree
5fd571cbc13db113bda26c20673e1ec54bfd26b4 [PATCH] Array overrun in drivers/infiniband/core/cma.c
09c0dc68625c06f5b1e786aad0d5369b592179e6 Revert "[PATCH] kthread: update loop.c to use kthread"
6e58f5c9a841e59233c5997df082e93329ea61e0 [ARM] 3656/1: S3C2412: Add S3C2412 and S3C2413 documenation
>>> 2a2ed2db353d949c06b6ef8b6913f65b39111eab Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild
972d19e837833b93466c6f6a8ef2a7d653000aa3 Merge master.kernel.org:/pub/scm/linux/kernel/git/herbert/crypto-2.6
cdf4f383a4b0ffbf458f65380ecffbeee1f79841 Merge master.kernel.org:/pub/scm/linux/kernel/git/dtor/input
954b36d48b495afed2880320750858a2eae312c9 [PATCH] m68knommu: use configurable RAM setup page_offset.h
12ddae3348def8808fb755b23225b18fc4adfbe3 [PATCH] m68knommu: use configurable RAM setup in start up code
73e2fba8dc1e0a686073a5183be1a99e9285d2ac [PATCH] m68knommu: use configurable RAM setup in linker script
63e413d19db0018e443a43c6c7a482993edf79cf [PATCH] m68knommu: create configurable RAM setup
d2f386d7c182c1420f797093d67bb09a7251f113 [PATCH] m68knommu: remove unused vars from generic 68328 start code
2ae9cb6bd4c23616b229b135ea57a93a6a24e13a [PATCH] m68knommu: remove __ramvec from 68328/pilot start code

# pick another one...

$ git-reset --hard aa4148cfc7b3b93eeaf755a7d14f10afaffe9a96

-- 
	Paolo Ornati
	Linux 2.6.21-rc6-gc2481cc4 on x86_64
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