[PATCH] ARM: Avoid discarding sections that might have SMP_ON_UP fixups
dave.martin at linaro.org
Thu Feb 10 09:13:13 EST 2011
On Thu, Feb 10, 2011 at 2:11 PM, Dave Martin <dave.martin at linaro.org> wrote:
> On Thu, Feb 10, 2011 at 12:56 PM, Russell King - ARM Linux
> <linux at arm.linux.org.uk> wrote:
>> On Wed, Feb 09, 2011 at 02:22:11PM +0000, Russell King - ARM Linux wrote:
>>> On Wed, Jan 26, 2011 at 05:25:35PM +0000, Dave P. Martin wrote:
>>> > SMP_ON_UP fixups lead to vmlinux link errors if those sections are
>>> > discarded at link-time. In particular this may happen for built-in
>>> > __exit stuff.
>>> > This patch modifies the vmlinux linker script to reduce the amount
>>> > of discarded sections, and tries to make sure that __exit sections
>>> > are kept in.
>>> > This is a hack and probably wrong! Further discussion is needed.
>>> Can you send the configuration which you see this problem with?
>>> I've tried to build a kernel which inlines the spinlocks, but I find
>>> that's not possible, so I'm doubting whether any fix is required for
>> Any news on this, or can it not be reproduced?
> Hi, apologies-- didn't see my mail for a bit.
> I get the problem with this tree and config (which builds with
> SMP_ON_UP and THUMB2_KERNEL for omap3/4):
> Tree: git://git.linaro.org/people/dmart/linux-2.6-arm.git
> Config: http://people.linaro.org/~dmart/arm_omap-thumb2+v2_config
Note that this tree contains some extra patches (though I believe
nothing is there which should cause the problem), and does not contain
everything from rmk/devel -- so it's possible this has been fixed in
the meantime or no longer occurs for some other reason...
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