[PATCHv2 2/4] arm64: cpuinfo: print info for all CPUs

[mark.rutland@arm.com (Mark Rutland)]

On Wed, Jun 18, 2014 at 06:15:20PM +0100, Will Deacon wrote:
> On Tue, Jun 17, 2014 at 06:04:32PM +0100, Mark Rutland wrote:
> > Currently reading /proc/cpuinfo will result in information being read
> > out of the MIDR_EL1 of the current CPU, and the information is not
> > associated with any particular logical CPU number.
> > 
> > This is problematic for systems with heterogeneous CPUs (i.e.
> > big.LITTLE) where fields will vary across CPUs, and the output will
> > differ depending on the executing CPU. Additionally the output is
> > different in format to the 32-bit ARM Linux port, where information is
> > printed out for each CPU.
> > 
> > This patch adds the necessary infrastructure to log the relevant
> > registers (currently just MIDR_EL1) and print out the logged
> > information.
> 
> [...]
> 
> > diff --git a/arch/arm64/include/asm/cpu.h b/arch/arm64/include/asm/cpu.h
> > new file mode 100644
> > index 0000000..74bf9bb
> > --- /dev/null
> > +++ b/arch/arm64/include/asm/cpu.h
> > @@ -0,0 +1,30 @@
> > +/*
> > + *  arch/arm/include/asm/cpu.h
> > + *
> > + *  Copyright (C) 2004-2014 ARM Ltd.
> > + *
> > + * This program is free software; you can redistribute it and/or modify
> > + * it under the terms of the GNU General Public License version 2 as
> > + * published by the Free Software Foundation.
> > + */
> > +#ifndef __ASM_ARM64_CPU_H
> > +#define __ASM_ARM64_CPU_H
> 
> We're trying to have a consistent style for these guards, so please use
> __ASM_CPU_H here instead.

Done (also added /* __ASM_CPU_H */ to the #endif for consistency).

> That said, does this actually need to be in a header file? If you move
> cpuinfo_store_cpu into setup.c, this structure can be private to that
> file, no?

Per your comments on patch 3 I'll ignore this :)

Mark.