Messages in this thread | | | Date | Tue, 30 Nov 2010 18:14:42 +0000 | From | Russell King - ARM Linux <> | Subject | Re: [PATCH 2/8] ARM: cns3xxx: Add support for SMP |
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On Tue, Nov 30, 2010 at 08:17:00PM +0300, Anton Vorontsov wrote: > Nothing fancy needs to be done, just use generic SCU routines. > > Signed-off-by: Anton Vorontsov <avorontsov@mvista.com>
This I assume is an age old patch.
> diff --git a/arch/arm/mach-cns3xxx/include/mach/smp.h b/arch/arm/mach-cns3xxx/include/mach/smp.h > new file mode 100644 > index 0000000..44aa7ea > --- /dev/null > +++ b/arch/arm/mach-cns3xxx/include/mach/smp.h > @@ -0,0 +1,28 @@ > +/* > + * Copyright 2002 ARM Ltd. > + * Copyright 2008 Cavium Networks > + * > + * This file 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 __MACH_SMP_H > +#define __MACH_SMP_H > + > +#include <asm/hardware/gic.h> > + > +#define hard_smp_processor_id() \ > + ({ \ > + unsigned int cpunum; \ > + __asm__("mrc p15, 0, %0, c0, c0, 5" \ > + : "=r" (cpunum)); \ > + cpunum &= 0x0F; \ > + })
#include <asm/smp_mpidr.h>
replaces this, but it's not actually necessary - it's only used by some bug checking code in the CPU hotplug code. I'm shortly going to be deleting all hard_smp_processor_id() implementations.
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