linux-kernel - Re: [RFC patch 2/5] smpboot: Provide infrastructure for percpu hotplug threads

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]

Date:	Wed, 13 Jun 2012 12:17:45 -0700
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...nel.org>,
	"Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Tejun Heo <tj@...nel.org>
Subject: Re: [RFC patch 2/5] smpboot: Provide infrastructure for percpu
 hotplug threads

On Wed, Jun 13, 2012 at 09:02:55PM +0200, Thomas Gleixner wrote:
> On Wed, 13 Jun 2012, Paul E. McKenney wrote:
> > On Wed, Jun 13, 2012 at 11:00:54AM -0000, Thomas Gleixner wrote:
> > >  	/* Now call notifier in preparation. */
> > >  	cpu_notify(CPU_ONLINE | mod, hcpu);
> > > +	smpboot_unpark_threads(cpu);
> > 
> > OK, RCU must use the lower-level interfaces, given that one of
> > then CPU_ONLINE notifiers might invoke synchronize_rcu().
> 
> We can start the threads before the notifiers. There is no
> restriction.

Sounds very good in both cases!

							Thanx, Paul

--
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/