[PATCH] Shrink thread_info a bit

[Baruch Siach]

Hi Russell,

On Mon, Oct 24, 2011 at 01:48:18PM +0100, Russell King - ARM Linux wrote:
> Thread info comes in on Versatile Express at 752 bytes in size, which
> is quite large.  Of this, the crunch state is 184 bytes, which is only
> used on Cirrus Logic devices.
> 
> It is wasteful to have this in every kernel when Cirrus Logic CPUs
> are not that widely used.  So make this conditional.
> 
> Signed-off-by: Russell King <rmk+kernel at arm.linux.org.uk>
> ---
>  arch/arm/include/asm/thread_info.h |    2 ++
>  arch/arm/kernel/asm-offsets.c      |    2 ++
>  2 files changed, 4 insertions(+), 0 deletions(-)
> 
> diff --git a/arch/arm/include/asm/thread_info.h b/arch/arm/include/asm/thread_info.h
> index 7b5cc8d..a030be7 100644
> --- a/arch/arm/include/asm/thread_info.h
> +++ b/arch/arm/include/asm/thread_info.h
> @@ -59,7 +59,9 @@ struct thread_info {
>  	__u32			syscall;	/* syscall number */
>  	__u8			used_cp[16];	/* thread used copro */
>  	unsigned long		tp_value;
> +#ifdef CONFIG_CRUNCH
>  	struct crunch_state	crunchstate;
> +#endif
>  	union fp_state		fpstate __attribute__((aligned(8)));
>  	union vfp_state		vfpstate;
>  #ifdef CONFIG_ARM_THUMBEE

Where is the arch/arm/kernel/asm-offsets.c hunk?

baruch

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