From: Russell King - ARM Linux <linux@arm.linux.org.uk>
To: Tony Lindgren <tony@atomide.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>,
Paul Walmsley <paul@pwsan.com>,
"Syed Mohammed, Khasim" <khasim@ti.com>,
"Gadiyar, Anand" <gadiyar@ti.com>,
"linux-arm-kernel@lists.arm.linux.org.uk"
<linux-arm-kernel@lists.arm.linux.org.uk>,
"linux-omap@vger.kernel.org" <linux-omap@vger.kernel.org>,
Juha Yrjola <juha.yrjola@solidboot.com>
Subject: Re: [PATCH] ARM: Do early I/O mapping if spinlock debugging is enabled (Re: [PATCH 3/4] ARM: OMAP3: Add support for 3430 SDP, v3)
Date: Thu, 2 Apr 2009 08:38:19 +0100 [thread overview]
Message-ID: <20090402073819.GA4337@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <20090402000055.GK32530@atomide.com>
On Wed, Apr 01, 2009 at 05:00:56PM -0700, Tony Lindgren wrote:
> Well turns out it's the same old bug again Juha tracked down earlier..
>
> If CONFIG_DEBUG_SPINLOCK is set, and CONFIG_DEBUG_LL is not set, the IO
> does not get mapped. Juha's earlier patch is attached.
>
> Russell, got any better fixes in mind for this?
No, and as I've said previously, the kernel assuming that sched_clock
is usable before stuff has been initialized is a bug plain and simple.
Your patch may fix OMAP, but it won't fix everything.
It's just not going to be possible to make this work. spinlock debugging
needs to stop using sched_clock.
next prev parent reply other threads:[~2009-04-02 7:38 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-13 22:43 [PATCH 0/4] Omap board updates for merge window after 2.6.29 Tony Lindgren
2009-03-13 22:44 ` [PATCH 1/4] ARM: OMAP3: Add SMSC911X support to Overo platform (V2) Tony Lindgren
2009-03-15 15:38 ` Russell King - ARM Linux
2009-03-15 16:36 ` Steve Sakoman
2009-03-15 17:00 ` Russell King - ARM Linux
2009-03-15 17:13 ` Steve Sakoman
2009-03-15 17:37 ` Russell King - ARM Linux
2009-03-16 18:08 ` Tony Lindgren
2009-03-17 8:18 ` Steve.Glendinning
2009-03-13 22:46 ` [PATCH 2/4] ARM: OMAP3: Add ADS7846 touchscreen support to Overo platform Tony Lindgren
2009-03-16 20:38 ` [PATCH 2/4] ARM: OMAP3: Add ADS7846 touchscreen support to Overo platform, v2 Tony Lindgren
2009-03-16 21:57 ` Felipe Balbi
2009-03-24 3:54 ` [PATCH 2/4] ARM: OMAP3: Add ADS7846 touchscreen support to Overo platform, v3 Tony Lindgren
2009-03-13 22:47 ` [PATCH 3/4] ARM: OMAP3: Add support for 3430 SDP Tony Lindgren
2009-03-15 15:47 ` Russell King - ARM Linux
2009-03-15 15:48 ` Russell King - ARM Linux
2009-03-16 18:14 ` [PATCH 3/4] ARM: OMAP3: Add support for 3430 SDP, v2 Tony Lindgren
2009-03-16 18:22 ` [PATCH 3/4] ARM: OMAP3: Add support for 3430 SDP, v3 Tony Lindgren
2009-03-23 19:05 ` [PATCH 3/4] ARM: OMAP3: Add support for 3430 SDP, v4 Tony Lindgren
2009-03-31 11:42 ` [PATCH 3/4] ARM: OMAP3: Add support for 3430 SDP, v3 Gadiyar, Anand
2009-03-31 13:37 ` Gadiyar, Anand
2009-03-31 14:50 ` Tony Lindgren
2009-03-31 18:48 ` Russell King - ARM Linux
2009-04-01 8:25 ` Gadiyar, Anand
2009-04-01 8:47 ` Syed Mohammed, Khasim
2009-04-01 19:04 ` Paul Walmsley
2009-04-01 22:07 ` Tony Lindgren
2009-04-01 23:18 ` Kevin Hilman
2009-04-02 0:00 ` [PATCH] ARM: Do early I/O mapping if spinlock debugging is enabled (Re: [PATCH 3/4] ARM: OMAP3: Add support for 3430 SDP, v3) Tony Lindgren
2009-04-02 7:38 ` Russell King - ARM Linux [this message]
2009-04-02 14:54 ` Tony Lindgren
2009-04-02 4:33 ` [PATCH 3/4] ARM: OMAP3: Add support for 3430 SDP, v3 Pandita, Vikram
2009-04-02 20:01 ` Pandita, Vikram
2009-04-03 19:14 ` Paul Walmsley
2009-04-03 19:25 ` Gadiyar, Anand
2009-04-04 11:18 ` Gadiyar, Anand
2009-04-03 23:12 ` Kevin Hilman
2009-04-03 23:29 ` Paul Walmsley
2009-03-13 22:48 ` [PATCH 4/4] ARM OMAP3: Initial support for Nokia RX-51 Tony Lindgren
2009-03-15 15:47 ` Russell King - ARM Linux
2009-03-16 18:21 ` [PATCH 4/4] ARM OMAP3: Initial support for Nokia RX-51, v2 Tony Lindgren
2009-03-24 2:52 ` [PATCH 0/4] Omap board updates for merge window after 2.6.29 Tony Lindgren
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