Re: [RFC][PATCH] extable: Make sure all archs define _sdata

From: Richard Henderson
Date: Fri May 20 2011 - 10:28:37 EST

On 05/19/2011 06:34 PM, Steven Rostedt wrote:
> Can I get an Acked-by (or comment) from the following Maintainers:
> alpha
> m32r
> m68k
> mips
> parisc
> Ingo has discovered that one of my patches broke the builds of these
> architectures. Although he added a quick fix, this patch supplies the
> proper fix and touches the affected architectures. Please review and Ack
> (or NACK with guidance) this patch.
> -- Steve
> A new utility function is used to determine if a passed in address is
> part of core kernel data or not. It may or may not return true for RO
> data, but this utility must work for RW data. Thus both _sdata and
> _edata must be defined and continuous, without .init sections that may
> later be freed and replaced by volatile memory (memory that can be
> freed).
> This utility function is used to determine if data is safe from ever
> being freed. Thus it should return true for all RW global data that is
> not in a module or has been allocated, or false otherwise.
> Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx>

Acked-by: Richard Henderson <rth@xxxxxxxxxxx>

Although I suppose if we're supposedly standardizing on _sdata,
the two uses of _data in arch/alpha/mm/ could be transitioned.

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