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SubjectRe: [PATCH] Use separate sections for __dev/__cpu/__mem code/data
On Sun, Jan 20, 2008 at 09:09:03PM +0100, Sam Ravnborg wrote:
> diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
> index ded7ca2..e0a56fb 100644
> --- a/include/asm-generic/vmlinux.lds.h
> +++ b/include/asm-generic/vmlinux.lds.h
> @@ -9,10 +9,46 @@
> /* Align . to a 8 byte boundary equals to maximum function alignment. */
> #define ALIGN_FUNCTION() . = ALIGN(8)
>
> +/* The actual configuration determine if the init/exit sections
> + * are handled as text/data or they can be discarded (which
> + * often happens at runtime)
> + */
> +#ifdef CONFIG_HOTPLUG
> +#define DEV_KEEP(sec) *(.dev##sec)
> +#define DEV_DISCARD(sec)
> +#else
> +#define DEV_KEEP(sec)
> +#define DEV_DISCARD(sec) *(.dev##sec)
> +#endif
> +
Using your kbuild.git, these blow up for me:

LD .tmp_vmlinux1
sh4-linux-ld:arch/sh/kernel/vmlinux.lds:364: ignoring invalid character `#' in script
sh4-linux-ld:arch/sh/kernel/vmlinux.lds:364: ignoring invalid character `#' in script
sh4-linux-ld:arch/sh/kernel/vmlinux.lds:364: ignoring invalid character `#' in script
sh4-linux-ld:arch/sh/kernel/vmlinux.lds:364: ignoring invalid character `#' in script
sh4-linux-ld:arch/sh/kernel/vmlinux.lds:381: ignoring invalid character `#' in script
sh4-linux-ld:arch/sh/kernel/vmlinux.lds:381: ignoring invalid character `#' in script
sh4-linux-ld:arch/sh/kernel/vmlinux.lds:381: ignoring invalid character `#' in script
...

This comes out as:

.text : {
*(.text.head)
. = ALIGN(8); *(.text) *(.text.init.refok) *(.exit.text.refok) *(.dev##init.text)
*(.dev##exit.text)
. = ALIGN(8); __sched_text_start = .; *(.sched.text)
__sched_text_end = .;
. = ALIGN(8); __lock_text_start = .; *(.spinlock.text)
__lock_text_end = .;
. = ALIGN(8); __kprobes_text_start = .; *(.kprobes.text)
__kprobes_text_end = .;
*(.fixup)
*(.gnu.warning)
...

so the ## is being taken directly rather than acting as a concatenation.


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