linux-kernel - Re: [patch 5/3] fastboot: sync the async execution before late

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Message-ID: <488F87AB.9080309@keyaccess.nl>
Date:	Tue, 29 Jul 2008 23:12:11 +0200
From:	Rene Herman <rene.herman@...access.nl>
To:	Arjan van de Ven <arjan@...radead.org>
CC:	linux-kernel@...r.kernel.org, mingo@...e.hu,
	Simon Arlott <simon@...e.lp0.eu>,
	Alan Stern <stern@...land.harvard.edu>,
	Daniel Walker <dwalker@...sta.com>
Subject: Re: [patch 5/3] fastboot: sync the async execution before late_initcall
 and move level 6s (sync) first

On 29-07-08 23:04, Arjan van de Ven wrote:

> On Tue, 29 Jul 2008 23:00:29 +0200
>> Isn't this a bit confusing? All the other sync levels are directly
>> after their respective levels. I can see why you want another level
>> now, but shouldn't that mean late_initcall now wants to be 8,
>> device_initcall 7 and your new 6s just 6 (device_core_initcall or
>> something...)?
>>
> 
> yeah it is.. but nobody is using them
> 
> I'll make a note to clean this up
> 
> (by removing the unused ones)

Fair enough. By the way:

> @@ -775,6 +776,11 @@ static void __init do_initcalls(void)
>  		}
>  		if (phase == 1 && call >= __async_initcall_end)
>  			phase = 2;
> +		if (phase == 2 && call >= __device_initcall_end) {
> +			phase = 3;
> +			/* make sure all async work is done before level 7 */
> +			flush_workqueue(async_init_wq);
> +		}
>  		if (phase != 1)
>  			do_one_initcall(*call);

After this patch, there are now 2 flush_workqueue(async_init_wq) calls 
in do_initcalls. Should the other one remain as well?

Rene.

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