linux-kernel - Re: [PATCH] driver core: remove polling for driver_probe

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: <20090130113043.72fd0f55@gondolin>
Date:	Fri, 30 Jan 2009 11:30:43 +0100
From:	Cornelia Huck <cornelia.huck@...ibm.com>
To:	Ming Lei <tom.leiming@...il.com>
Cc:	kay.sievers@...y.org, greg@...ah.com, arjan@...radead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] driver core: remove polling for driver_probe_done(v2)

On Fri, 30 Jan 2009 18:17:36 +0800,
Ming Lei <tom.leiming@...il.com> wrote:

> If probing done does not mean the device is available, this patch should be
> ignored or fixed further.
> 
> But polling is really not good, is there a approach to avoid the polling for
> appearence of the root device?

I think the parts of your patch that replace polling for
driver_probe_done() with waiting on the waitqueue are fine. The
problematic part is the rootwait special case, where polling seems
unavoidable afaics.
--
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/