[PATCH] Shrink thread_info a bit

[linux@arm.linux.org.uk (Russell King - ARM Linux)]

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@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