linux-kernel - Re: [PATCH -tip/master] x86: io-apic

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Message-ID: <20080922103736.GA22024@localhost>
Date:	Mon, 22 Sep 2008 14:37:36 +0400
From:	Cyrill Gorcunov <gorcunov@...il.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Yinghai Lu <yhlu.kernel@...il.com>,
	Suresh Siddha <suresh.b.siddha@...el.com>,
	LKML <linux-kernel@...r.kernel.org>,
	"Maciej W. Rozycki" <macro@...ux-mips.org>
Subject: Re: [PATCH -tip/master] x86: io-apic - interrupt remapping fix

[Ingo Molnar - Mon, Sep 22, 2008 at 12:05:32PM +0200]
| 
| * Yinghai Lu <yhlu.kernel@...il.com> wrote:
| 
| > On Mon, Sep 22, 2008 at 2:04 AM, Ingo Molnar <mingo@...e.hu> wrote:
| > 
| > BTW
| > 
| > x2apic and IRmapping make io_apic.c and apic.c ugly.
| 
| yes. Any ideas how to clean it up some more?
| 
| the kmalloc looks quite ugly, especially with this kfree() teardown 
| sequence we have now.
| 
| 	Ingo
| 

yes Ingo - it's ugly but I had not that many choises:

1) allocate/deallocate if failed inside same routine
2) deallocate in restore_IO_APIC_setup (which would be much more
   ugly and obscure)
3) allocate and deallocate in completely separated routines - didn't
   even tried :)

So I've stopped on (1) 'case it was less_changing_the_sources patch.   

		- Cyrill -
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