linux-kernel - git bisect and perf

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Date:	Tue, 05 Jun 2012 09:29:10 -0600
From:	David Ahern <dsahern@...il.com>
To:	Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Stephane Eranian <eranian@...gle.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Subject: git bisect and perf

I am trying find out when (ie. which commit) the pebs feature actually 
started working on a westmere system and hitting a problem with git-bisect:

# git bisect start arch/x86/kernel/cpu/perf_event*

# git bisect bad v2.6.35

# git bisect good v2.6.38
Some good revs are not ancestor of the bad rev.
git bisect cannot work properly in this case.
Maybe you mistake good and bad revs?

Any ideas on why git bisect would not work?

David
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