linux-kernel - Re: [PATCH 0/6] lock contention tracking -v4

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Message-ID: <20070530131751.GA22724@elte.hu>
Date:	Wed, 30 May 2007 15:17:51 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Bill Huey <billh@...ppy.monkey.org>,
	Jason Baron <jbaron@...hat.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Christoph Hellwig <hch@...radead.org>
Subject: Re: [PATCH 0/6] lock contention tracking -v4


* Peter Zijlstra <a.p.zijlstra@...llo.nl> wrote:

> Changes since -v3
>  - reshuffled code to reduce #ifdef mess

| Now at patch patches/raw_spinlock_fix.patch
| # grep "#ifdef" kernel/lockdep.c | wc -l
| 17

ok, this is unmodified lockdep.c.

| # quilt push
| Applying patch patches/lockdep-prove-locking.patch
| patching file kernel/lockdep.c
| patching file kernel/spinlock.c
|
| Now at patch patches/lockdep-prove-locking.patch
| # grep "#ifdef" kernel/lockdep.c | wc -l
| 23

this was the increase that Christoph commented on.

| # quilt push
| Applying patch patches/lockdep-reduce-ifdefs.patch
| patching file kernel/lockdep.c
| patching file kernel/lockdep_proc.c
|
| Now at patch patches/lockdep-reduce-ifdefs.patch
| # grep "#ifdef" kernel/lockdep.c | wc -l
| 11

and now it's lower than where it started out and you also put lockstat 
in! Nice! :)

	Ingo
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