From mboxrd@z Thu Jan  1 00:00:00 1970
From: linux@arm.linux.org.uk (Russell King - ARM Linux)
Date: Mon, 24 Oct 2011 14:08:31 +0100
Subject: [PATCH] Shrink thread_info a bit
In-Reply-To: <20111024130619.GE26649@sapphire.tkos.co.il>
References: <20111024124818.GA17693@n2100.arm.linux.org.uk>
	<20111024130619.GE26649@sapphire.tkos.co.il>
Message-ID: <20111024130831.GA18426@n2100.arm.linux.org.uk>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On Mon, Oct 24, 2011 at 03:06:19PM +0200, Baruch Siach wrote:
> 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@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?

Have you looked there?