linux-kernel - Re: [PATCH v4 2/2] arm: Clean up linker script using new linker script macros.

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Date:	Mon, 12 Oct 2009 10:41:10 -0400 (EDT)
From:	Tim Abbott <tabbott@...lice.com>
To:	Russell King <rmk+kernel@....linux.org.uk>
cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Sam Ravnborg <sam@...nborg.org>,
	Nelson Elhage <nelhage@...lice.com>
Subject: Re: [PATCH v4 2/2] arm: Clean up linker script using new linker
 script macros.

Can someone with an arm machine test this patch?  I'd really appreciate 
it.

	-Tim Abbott

On Fri, 2 Oct 2009, Tim Abbott wrote:

> From: Nelson Elhage <nelhage@...lice.com>
> 
> This patch is mostly a straightforward translation. The primary side
> effect to the resulting vmlinux should be to increase the alignment on
> the initramfs to the standard PAGE_SIZE from 32 bytes.
> 
> Signed-off-by: Nelson Elhage <nelhage@...lice.com>
> Cc: Russell King <rmk+kernel@....linux.org.uk>
> Signed-off-by: Tim Abbott <tabbott@...lice.com>
> Acked-by: Sam Ravnborg <sam@...nborg.org>
> ---
>  arch/arm/kernel/vmlinux.lds.S |   77 ++++++++++++----------------------------
>  1 files changed, 23 insertions(+), 54 deletions(-)
> 
> diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
> index 0902f80..71151bd 100644
> --- a/arch/arm/kernel/vmlinux.lds.S
> +++ b/arch/arm/kernel/vmlinux.lds.S
> @@ -40,43 +40,31 @@ SECTIONS
>  		__tagtable_begin = .;
>  			*(.taglist.init)
>  		__tagtable_end = .;
> -		. = ALIGN(16);
> -		__setup_start = .;
> -			*(.init.setup)
> -		__setup_end = .;
> +
> +		INIT_SETUP(16)
> +
>  		__early_begin = .;
>  			*(.early_param.init)
>  		__early_end = .;
> -		__initcall_start = .;
> -			INITCALLS
> -		__initcall_end = .;
> -		__con_initcall_start = .;
> -			*(.con_initcall.init)
> -		__con_initcall_end = .;
> -		__security_initcall_start = .;
> -			*(.security_initcall.init)
> -		__security_initcall_end = .;
> -#ifdef CONFIG_BLK_DEV_INITRD
> -		. = ALIGN(32);
> -		__initramfs_start = .;
> -			usr/built-in.o(.init.ramfs)
> -		__initramfs_end = .;
> -#endif
> -		. = ALIGN(PAGE_SIZE);
> -		__per_cpu_load = .;
> -		__per_cpu_start = .;
> -			*(.data.percpu.page_aligned)
> -			*(.data.percpu)
> -			*(.data.percpu.shared_aligned)
> -		__per_cpu_end = .;
> +
> +		INIT_CALLS
> +		CON_INITCALL
> +		SECURITY_INITCALL
> +		INIT_RAM_FS
> +
>  #ifndef CONFIG_XIP_KERNEL
>  		__init_begin = _stext;
>  		INIT_DATA
> -		. = ALIGN(PAGE_SIZE);
> -		__init_end = .;
>  #endif
>  	}
>  
> +	PERCPU(PAGE_SIZE)
> +
> +#ifndef CONFIG_XIP_KERNEL
> +	. = ALIGN(PAGE_SIZE);
> +	__init_end = .;
> +#endif
> +
>  	/DISCARD/ : {			/* Exit code and data		*/
>  		EXIT_TEXT
>  		EXIT_DATA
> @@ -155,7 +143,7 @@ SECTIONS
>  		 * first, the init task union, aligned
>  		 * to an 8192 byte boundary.
>  		 */
> -		*(.data.init_task)
> +		INIT_TASK_DATA(THREAD_SIZE)
>  
>  #ifdef CONFIG_XIP_KERNEL
>  		. = ALIGN(PAGE_SIZE);
> @@ -165,17 +153,8 @@ SECTIONS
>  		__init_end = .;
>  #endif
>  
> -		. = ALIGN(PAGE_SIZE);
> -		__nosave_begin = .;
> -		*(.data.nosave)
> -		. = ALIGN(PAGE_SIZE);
> -		__nosave_end = .;
> -
> -		/*
> -		 * then the cacheline aligned data
> -		 */
> -		. = ALIGN(32);
> -		*(.data.cacheline_aligned)
> +		NOSAVE_DATA
> +		CACHELINE_ALIGNED_DATA(32)
>  
>  		/*
>  		 * The exception fixup table (might need resorting at runtime)
> @@ -254,20 +233,10 @@ SECTIONS
>  	}
>  #endif
>  
> -	.bss : {
> -		__bss_start = .;	/* BSS				*/
> -		*(.bss)
> -		*(COMMON)
> -		__bss_stop = .;
> -		_end = .;
> -	}
> -					/* Stabs debugging sections.	*/
> -	.stab 0 : { *(.stab) }
> -	.stabstr 0 : { *(.stabstr) }
> -	.stab.excl 0 : { *(.stab.excl) }
> -	.stab.exclstr 0 : { *(.stab.exclstr) }
> -	.stab.index 0 : { *(.stab.index) }
> -	.stab.indexstr 0 : { *(.stab.indexstr) }
> +	BSS_SECTION(0, 0, 0)
> +	_end = .;
> +
> +	STABS_DEBUG
>  	.comment 0 : { *(.comment) }
>  }
>  
> -- 
> 1.6.4.3
> 
> 
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