linux-kernel - Re: [PATCH 00/25] dyn_array and nr

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Message-ID: <86802c440808051653g2ef28df7h7615301f6db0b4f5@mail.gmail.com>
Date:	Tue, 5 Aug 2008 16:53:51 -0700
From:	"Yinghai Lu" <yhlu.kernel@...il.com>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	"Ingo Molnar" <mingo@...e.hu>,
	"Thomas Gleixner" <tglx@...utronix.de>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	"Dhaval Giani" <dhaval@...ux.vnet.ibm.com>,
	"Mike Travis" <travis@....com>,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 00/25] dyn_array and nr_irqs support v3

On Tue, Aug 5, 2008 at 4:26 PM, H. Peter Anvin <hpa@...or.com> wrote:
> Yinghai Lu wrote:
>>
>> i am working on dyn_array + condense irq_desc/irq_cfg.
>>
>> it will use dyn_array to allocate 32 entry for irq_desc/irq_cfg, and
>> will use get_irq_desc via list to distribute it. later if need more,
>> will allocate more 32 entries....
>>
>> so will send out v4.
>>
>
> My understanding of dyn_array is that it only works at init time.
> How does that work when you hotplug MSI-X devices?

actually create irq_desc like Eric suggest, but allocate 32 entry one
time, and use it one by one. share some init work function bewteen
init stage and later.

YH
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