linux-kernel - Re: [PATCH 3/5] Removing dead CONFIG_SMP

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Message-ID: <1276150461.1962.42.camel@pasglop>
Date:	Thu, 10 Jun 2010 16:14:21 +1000
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Josh Boyer <jwboyer@...ux.vnet.ibm.com>
Cc:	Christoph Egger <siccegge@...fau.de>,
	Paul Mackerras <paulus@...ba.org>, linuxppc-dev@...abs.org,
	linux-kernel@...r.kernel.org, vamos@...informatik.uni-erlangen.de
Subject: Re: [PATCH 3/5] Removing dead CONFIG_SMP_750

On Wed, 2010-06-09 at 08:35 -0400, Josh Boyer wrote:
> On Wed, Jun 09, 2010 at 12:00:21PM +0200, Christoph Egger wrote:
> >CONFIG_SMP_750 doesn't exist in Kconfig, therefore removing all
> >references for it from the source code.
> 
> Yeah, we don't support SMP on 750 at the moment.  This code was carried over
> from the arch/ppc days, and that code was present pre-git.  I think we can
> drop it, but I'll leave that up to Ben.  Maybe he has crazy plans for a 750 SMP
> board.

Nope :-) Though it would be nice to also remove the call sites too and
thus remove the macro entirely.

Cheers,
Ben.

> josh
> 
> >
> >Signed-off-by: Christoph Egger <siccegge@...fau.de>
> >---
> > arch/powerpc/mm/tlb_hash32.c |    4 ----
> > 1 files changed, 0 insertions(+), 4 deletions(-)
> >
> >diff --git a/arch/powerpc/mm/tlb_hash32.c b/arch/powerpc/mm/tlb_hash32.c
> >index 8aaa8b7..925fecb 100644
> >--- a/arch/powerpc/mm/tlb_hash32.c
> >+++ b/arch/powerpc/mm/tlb_hash32.c
> >@@ -94,11 +94,7 @@ void tlb_flush(struct mmu_gather *tlb)
> >  * the cache operations on the bus.  Hence we need to use an IPI
> >  * to get the other CPU(s) to invalidate their TLBs.
> >  */
> >-#ifdef CONFIG_SMP_750
> >-#define FINISH_FLUSH	smp_send_tlb_invalidate(0)
> >-#else
> > #define FINISH_FLUSH	do { } while (0)
> >-#endif
> >
> > static void flush_range(struct mm_struct *mm, unsigned long start,
> > 			unsigned long end)
> >-- 
> >1.6.3.3
> >
> >_______________________________________________
> >Linuxppc-dev mailing list
> >Linuxppc-dev@...ts.ozlabs.org
> >https://lists.ozlabs.org/listinfo/linuxppc-dev
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