linux-kernel - Re: [PATCH 1/6] fastboot: Asynchronous function calls to speed up kernel boot

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20090114090433.45cf1e78@infradead.org>
Date:	Wed, 14 Jan 2009 09:04:33 +0000
From:	Arjan van de Ven <arjan@...radead.org>
To:	Zhang Rui <rui.zhang@...el.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"torvalds@...ux-foundation.org" <torvalds@...ux-foundation.org>,
	"mingo@...e.hu" <mingo@...e.hu>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"linux-ide@...r.kernel.org" <linux-ide@...r.kernel.org>,
	"linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>
Subject: Re: [PATCH 1/6] fastboot: Asynchronous function calls to speed up
 kernel boot

On Wed, 14 Jan 2009 13:32:43 +0800
Zhang Rui <rui.zhang@...el.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
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/