linux-kernel - Re: [PATCH 2/4] mce-inject: use individual members instead of struct mce

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Message-ID: <4ACEE3AB.5040308@jp.fujitsu.com>
Date:	Fri, 09 Oct 2009 16:18:03 +0900
From:	Hidetoshi Seto <seto.hidetoshi@...fujitsu.com>
To:	Huang Ying <ying.huang@...el.com>
CC:	Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>,
	Andi Kleen <ak@...ux.intel.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/4] mce-inject: use individual members instead of struct
 mce

Huang Ying wrote:
> On Fri, 2009-10-09 at 13:45 +0800, Hidetoshi Seto wrote: 
>> struct mce have many members and almost half of them are not used
>> for mce injection.  So make struct mce_fake_banks to have required
>> members instead of having struct mce in it.
> 
> I don't think this is necessary. struct mce works fine.

Why do you think so?
I think having unused space in precious per-CPU is not good idea.

And this change is required to reduces the size of allocation unit
in later patch to support multiple error injection.


Thanks,
H.Seto

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