linux-kernel - Re: [PATCH v2 1/2] rcu: don't bind offline cpu

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: <1305794078.2466.7193.camel@twins>
Date:	Thu, 19 May 2011 10:34:38 +0200
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Cc:	yong.zhang0@...il.com, paulmck@...ux.vnet.ibm.com, oleg@...hat.com,
	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	mingo@...e.hu, lizf@...fujitsu.com, miaox@...fujitsu.com
Subject: Re: [PATCH v2 1/2] rcu: don't bind offline cpu

On Thu, 2011-05-19 at 15:06 +0900, KOSAKI Motohiro wrote:
> 
> The right way is, explicit two phase cpu bindings (1) bind boot
> (or any other online) cpu at CPU_UP_PREPARE (2) bind correct
> target cpu at CPU_ONLINE. This patch does it. 

I'm not sure that is in-fact correct. From what I understood, RCU could
have need of this thread before the ONLINE callback and expects it to be
affine at that time.

What was wrong with delaying the wakeup to STARTING?
--
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/