linux-kernel - Re: [PATCH] x86: APIC: Remove apic_write

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Message-ID: <20080718224922.GB4507@linux-os.sc.intel.com>
Date:	Fri, 18 Jul 2008 15:49:23 -0700
From:	Suresh Siddha <suresh.b.siddha@...el.com>
To:	Zachary Amsden <zach@...are.com>
Cc:	"Maciej W. Rozycki" <macro@...ux-mips.org>,
	Yinghai Lu <yhlu.kernel@...il.com>,
	Ingo Molnar <mingo@...e.hu>, "x86@...nel.org" <x86@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Siddha, Suresh B" <suresh.b.siddha@...el.com>,
	Jeremy Fitzhardinge <jeremy@...p.org>
Subject: Re: [PATCH] x86: APIC: Remove apic_write_around(); use alternatives

On Fri, Jul 18, 2008 at 03:42:17PM -0700, Zachary Amsden wrote:
> On Fri, 2008-07-18 at 15:02 -0700, Maciej W. Rozycki wrote:
> > On Fri, 18 Jul 2008, Yinghai Lu wrote:
> >
> > >   CC      arch/x86/kernel/apic_64.o
> > > arch/x86/kernel/apic_64.c:170: error: unknown field 'write_atomic'
> > > specified in initializer
> > > arch/x86/kernel/apic_64.c:170: error: 'native_apic_mem_write_atomic'
> > > undeclared here (not in a function)
> > > arch/x86/kernel/apic_64.c:209: error: unknown field 'write_atomic'
> > > specified in initializer
> > > arch/x86/kernel/apic_64.c:209: warning: initialization from
> > > incompatible pointer type
> > > make[1]: *** [arch/x86/kernel/apic_64.o] Error 1
> > > make: *** [arch/x86/kernel] Error 2
> >
> >  Just remove the offending initialisers.  They are not needed anymore as
> > the .write method is now used universally including places where
> > .write_atomic was.  I just could not stand watching the thing
> > proliferate...
> 
> Thank you for cleaning this up Yinghai, but this really begs the
> question - is having write_atomic REALLY worthwhile?

And this thread is about,  Maciej's cleanup patch which removed
write_atomic completely :)

Thanks to Maciej who posted this fix. It was on my todo list for
sometime now!

thanks,
suresh
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