linux-kernel - Re: [patch] sched_clock(): cleanups, #2

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Date:	Fri, 25 May 2007 09:17:43 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	Ingo Molnar <mingo@...e.hu>,
	Satyam Sharma <satyam.sharma@...il.com>,
	linux-kernel@...r.kernel.org,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [patch] sched_clock(): cleanups, #2

On Fri, 25 May 2007 14:15:40 +0200 Andi Kleen <andi@...stfloor.org> wrote:

> -Andi (who hopes this thread will end soon now and we can all go
> back to more important issues)

fyi, the thread has been damn useful for me.  If Ingo hadn't spotted that
preempt_count() imbalance then there's a decent chance that I'd have been
the first to hit it.

Time to bisect 1,000 patches: maybe an hour, if I choose the x86 tree as
the first pivot point, which is likely.

Or I wouldn't have hit it, in which case a tester hits it, and someone
(guess who) gets to enter into an intercontinental head-scratching session
trying to work out who broke it this time, consuming the tester's time too.
Plus we have a wrecked -mm and other people's code doesn't get as
well-tested as it might.

All for one silly little mistake.

So.  More care, please.

-
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