From: Adrian Bunk <bunk@stusta.de>
To: "Martin J. Bligh" <mbligh@google.com>
Cc: Andrew Morton <akpm@osdl.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] Default CONFIG_DEBUG_MUTEXES to n
Date: Sun, 16 Apr 2006 01:06:40 +0200 [thread overview]
Message-ID: <20060415230640.GP15022@stusta.de> (raw)
In-Reply-To: <44417792.2070900@google.com>
On Sat, Apr 15, 2006 at 03:45:38PM -0700, Martin J. Bligh wrote:
> CONFIG_DEBUG_MUTEXES has a significant performant impact (reduced perf
> of reaim by 50% on ia32 NUMA boxes). It should not be on by default.
>
> Signed-off-by: Martin J. Bligh <mbligh@google.com>
>
>
> diff -aurpN -X /home/mbligh/.diff.exclude linux-2.6.17-rc1/lib/Kconfig.debug 2.6.17-rc1_no_mutex_dbg/lib/Kconfig.debug
> --- linux-2.6.17-rc1/lib/Kconfig.debug 2006-04-15 15:28:54.000000000 -0700
> +++ 2.6.17-rc1_no_mutex_dbg/lib/Kconfig.debug 2006-04-15 15:44:14.000000000 -0700
> @@ -101,7 +101,7 @@ config DEBUG_PREEMPT
>
> config DEBUG_MUTEXES
> bool "Mutex debugging, deadlock detection"
> - default y
> + default n
>...
> config DEBUG_SPINLOCK
> bool "Spinlock debugging"
> + default n
>...
"default n" has no effect and can be removed.
cu
Adrian
--
"Is there not promise of rain?" Ling Tan asked suddenly out
of the darkness. There had been need of rain for many days.
"Only a promise," Lao Er said.
Pearl S. Buck - Dragon Seed
prev parent reply other threads:[~2006-04-15 23:06 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-04-15 22:45 [PATCH] Default CONFIG_DEBUG_MUTEXES to n Martin J. Bligh
2006-04-15 23:06 ` Adrian Bunk [this message]
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