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From: Grant Grundler <grundler@parisc-linux.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: parisc-linux@parisc-linux.org, Matthew Wilcox <matthew@wil.cx>
Subject: [parisc-linux] Re: [patch] spinlock consolidation, v2
Date: Mon, 6 Jun 2005 09:12:32 -0600	[thread overview]
Message-ID: <20050606151232.GA24437@colo.lackof.org> (raw)
In-Reply-To: <20050606073627.GA10387@elte.hu>

On Mon, Jun 06, 2005 at 09:36:27AM +0200, Ingo Molnar wrote:
> > I've adapted parisc-linux to this patch and put my changes into
> > a patch that goes on top of Ingo's.
> 
> i'm wondering, is the conversion to raw_spinlock_t absolutely necessary 
> to get a working PARISC kernel?

No. They were regular spinlocks before too. But there was a pretty
ugly set of interdependencies between asm/system.h, spinlock.h,
atomic.h, and bitops.h.

The cleanup necessary might be alot more baggage than you want
to carry around for this patch.

>  I feel a bit uneasy about using the raw 
> spinlocks directly - they were not intended to be used like that, for 
> the time being. Right now they are internal types.

They are arch specific types (asm/spinlock_types.h) and
I'm only using raw_spinlock_t in arch specific code.

>  You should be able to 
> use spinlock_types.h just as much to simplify your include file 
> dependencies. (as long as you use the spinlock APIs only in .c files)

I'll take another quick look
and see where the circular dependencies are now.

thanks,
grant
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  reply	other threads:[~2005-06-06 15:12 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-06-03 17:31 [parisc-linux] [mingo@elte.hu: [patch] spinlock consolidation, v2] Matthew Wilcox
2005-06-04 11:55 ` Joel Soete
2005-06-04 18:03   ` Grant Grundler
2005-06-05 19:13     ` Joel Soete
2005-06-06  6:05 ` [parisc-linux] Re: [patch] spinlock consolidation, v2 Grant Grundler
2005-06-06  7:36   ` Ingo Molnar
2005-06-06 15:12     ` Grant Grundler [this message]
2005-06-06 16:31       ` Ingo Molnar
2005-06-06 17:55         ` Grant Grundler
     [not found]     ` <20050606175029.GC24437@colo.lackof.org>
2005-06-12  6:49       ` Ingo Molnar
2005-06-12  7:25         ` Grant Grundler
2005-06-12  7:34           ` Ingo Molnar
2005-06-13  6:29             ` Grant Grundler
2005-06-13  7:44               ` Ingo Molnar
2005-06-13 18:39                 ` Grant Grundler
2005-06-21 11:22                   ` Ingo Molnar
     [not found] <20050607180315.GH29220@colo.lackof.org>
     [not found] ` <4282FEEC0000AB95@mail-3-bnl.tiscali.it>
2005-06-08 16:05   ` Grant Grundler

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