From: Arjan van de Ven <arjan@infradead.org>
To: Zhang Rui <rui.zhang@intel.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"torvalds@linux-foundation.org" <torvalds@linux-foundation.org>,
"mingo@elte.hu" <mingo@elte.hu>,
"akpm@linux-foundation.org" <akpm@linux-foundation.org>,
"linux-ide@vger.kernel.org" <linux-ide@vger.kernel.org>,
"linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
"linux-acpi@vger.kernel.org" <linux-acpi@vger.kernel.org>
Subject: Re: [PATCH 1/6] fastboot: Asynchronous function calls to speed up kernel boot
Date: Wed, 14 Jan 2009 09:04:33 +0000 [thread overview]
Message-ID: <20090114090433.45cf1e78@infradead.org> (raw)
In-Reply-To: <1231911163.20746.126.camel@rzhang-dt>
On Wed, 14 Jan 2009 13:32:43 +0800
Zhang Rui <rui.zhang@intel.com> wrote:
> > +
> > + wait_event(async_done, lowest_in_progress >= cookie);
> > +
>
> In some cases, we only want to wait for a specific cookie
> rather than all the cookies smaller than it.
>
> For example:
> device cookie
> ACPI battery 1
> ata port 0 2
> ata port 1 3
> ata port 0 and port 1 in the same host can not be probed in parallel.
>
> In this case, ata port1 should only wait for cookie 2 rather than
> both 1 and 2.
>
I really don't want to go this way; ordering is really important and I
don't want to break this.
If you really have a fully separate domain (and there's only few of
those in our kernel), then use a special run list.
--
Arjan van de Ven Intel Open Source Technology Centre
For development, discussion and tips for power savings,
visit http://www.lesswatts.org
next prev parent reply other threads:[~2009-01-14 9:03 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20090105200959.04a626ac@infradead.org>
2009-01-06 4:10 ` Arjan van de Ven
2009-01-06 4:25 ` Andrew Morton
2009-01-06 4:37 ` Arjan van de Ven
2009-01-06 13:57 ` Arjan van de Ven
2009-01-14 5:32 ` Zhang Rui
2009-01-14 9:04 ` Arjan van de Ven [this message]
2009-01-15 5:55 ` Zhang Rui
2009-01-06 4:11 ` [PATCH 2/6] fastboot: make scsi probes asynchronous Arjan van de Ven
2009-01-09 18:17 ` Mark Lord
2009-01-06 4:12 ` [PATCH 3/6] fastboot: make the libata port scan asynchronous Arjan van de Ven
2009-01-07 9:12 ` Bert Wesarg
2009-01-06 4:12 ` [PATCH 4/6] fastboot: make ACPI bus drivers probe asynchronous Arjan van de Ven
2009-01-07 14:12 ` Yong Wang
2009-01-07 17:25 ` Arjan van de Ven
2009-01-06 4:13 ` [PATCH 5/6] bootchart: improve output Arjan van de Ven
2009-01-06 4:13 ` [PATCH 6/6] fastboot: Make libata initialization even more async Arjan van de Ven
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