kernel/git - git - PowerEL Git System

Tree: cc9f24d024

Author	SHA1	Message	Date
Junio C Hamano	cc9f24d024	'git bisect visualize' Linus says: I'm testing bisection to find a bug that causes my G5 to no longer boot, and during the process have found this command line very nice: gitk bisect/bad --not $(cd .git/refs ; ls bisect/good-*) it basically shows the state of bisection with the known bad commit as the top, and cutting off all the good commits - so what you see are the potential buggy commits. Signed-off-by: Junio C Hamano <junkio@cox.net>	19 years ago
Linus Torvalds	670f5fe34f	[PATCH] Fix bisection terminating condition When testing bisection and using gitk to visualize the result, it was obvious that the termination condition was broken. We know what the bad entry is only when the bisection ends up telling us to test the known-bad entry again. Also, add a safety net: if somebody marks as good something that includes the known-bad point, we now notice and complain, instead of writing an empty revision to the new bisection branch. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>	19 years ago
Junio C Hamano	ff84d327df	Audit rev-parse users again. Some callers to rev-parse were using the output selection flags inconsistently. Signed-off-by: Junio C Hamano <junkio@cox.net>	20 years ago
Junio C Hamano	7f47e72fb3	git-bisect termination condition fix. When I munged the original from Linus, which did not terminate when the last bisect to check happened to be a bad one, to terminate, I seem to have botched the end result to pick. Thanks for Sanjoy Mahajan for a good reproduction recipe to diagnose this. Signed-off-by: Junio C Hamano <junkio@cox.net>	20 years ago
Linus Torvalds	8cc6a08319	[PATCH] Making it easier to find which change introduced a bug This adds a new "git bisect" command. - "git bisect start" start bisection search. - "git bisect bad <rev>" mark some version known-bad (if no arguments, then current HEAD) - "git bisect good <revs>..." mark some versions known-good (if no arguments, then current HEAD) - "git bisect reset <branch>" done with bisection search and go back to your work (if no arguments, then "master"). The way you use it is: git bisect start git bisect bad # Current version is bad git bisect good v2.6.13-rc2 # v2.6.13-rc2 was the last version # tested that was good When you give at least one bad and one good versions, it will bisect the revision tree and say something like: Bisecting: 675 revisions left to test after this and check out the state in the middle. Now, compile that kernel, and boot it. Now, let's say that this booted kernel works fine, then just do git bisect good # this one is good which will now say Bisecting: 337 revisions left to test after this and you continue along, compiling that one, testing it, and depending on whether it is good or bad, you say "git bisect good" or "git bisect bad", and ask for the next bisection. Until you have no more left, and you'll have been left with the first bad kernel rev in "refs/bisect/bad". Oh, and then after you want to reset to the original head, do a git bisect reset to get back to the master branch, instead of being in one of the bisection branches ("git bisect start" will do that for you too, actually: it will reset the bisection state, and before it does that it checks that you're not using some old bisection branch). Not really any harder than doing series of "quilt push" and "quilt pop", now is it? [jc: This patch is a rework based on what Linus posted to the list. The changes are: - The original introduced four separate commands, which was three too many, so I merged them into one with subcommands. - Since the next thing you would want to do after telling it "bad" and "good" is always to bisect, this version does it automatically for you. - I think the termination condition was wrong. The original version checked if the set of revisions reachable from next bisection but not rechable from any of the known good ones is empty, but if the current bisection was a bad one, this would not terminate, so I changed it to terminate it when the set becomes a singleton or empty. - Removed the use of shell array variable. ] Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>	20 years ago