linux-kernel - Re: [PATCH 07/12] SFI: add x86 support

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Message-ID: <20090710144831.63b7021a@feng-desktop>
Date:	Fri, 10 Jul 2009 14:48:31 +0800
From:	Feng Tang <feng.tang@...el.com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Len Brown <lenb@...nel.org>, "x86@...nel.org" <x86@...nel.org>,
	"sfi-devel@...plefirmware.org" <sfi-devel@...plefirmware.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>
Subject: Re: [PATCH 07/12] SFI: add x86 support

On Fri, 10 Jul 2009 14:37:26 +0800
Ingo Molnar <mingo@...e.hu> wrote:

> 
> * Len Brown <lenb@...nel.org> wrote:
> 
> > From: Feng Tang <feng.tang@...el.com>
> >
> > arch/x86/kernel/sfi.c serves the dual-purpose of supporting the
> > SFI core with arch specific code, as well as a home for the
> > arch-specific code that uses SFI.
> >
> > Signed-off-by: Feng Tang <feng.tang@...el.com>
> > Signed-off-by: Len Brown <len.brown@...el.com>
> > ---
> >  arch/x86/kernel/Makefile |    1 +
> >  arch/x86/kernel/sfi.c    |  284
> > ++++++++++++++++++++++++++++++++++++++++++++++
> > drivers/sfi/sfi_core.c   |    2 +- 3 files changed, 286
> > insertions(+), 1 deletions(-) create mode 100644
> > arch/x86/kernel/sfi.c
> >
> > diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
> > index 6c327b8..e430123 100644
> > --- a/arch/x86/kernel/Makefile
> > +++ b/arch/x86/kernel/Makefile
> > @@ -53,6 +53,7 @@ obj-y                               += step.o
> >  obj-$(CONFIG_STACKTRACE)     += stacktrace.o
> >  obj-y                                += cpu/
> >  obj-y                                += acpi/
> > +obj-$(CONFIG_SFI)            += sfi.o
> >  obj-y                                += reboot.o
> >  obj-$(CONFIG_MCA)            += mca_32.o
> >  obj-$(CONFIG_X86_MSR)                += msr.o

> 
> and write those 'any match' lines as:
> 
>         sfi_table_parse(SFI_SIG_CPUS, SFI_ANY_KEY, sfi_parse_cpus);
> 
> which is _far_ more readable and more extensible as well. (it is
> trivial to extend such a design with a new key field - while with
> the current open-coded structure it's far more invasive to do such a
> change.)
>  
> Thanks,
> 
>         Ingo

Thanks again for the great comments to this v2 series, will address them soon.

Thanks,
Feng
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