linux-kernel - Re: kGraft to -next [was: 00/21 kGraft]

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] [day] [month] [year] [list]

Date:	Tue, 29 Jul 2014 16:05:33 +0200 (CEST)
From:	Jiri Kosina <jkosina@...e.cz>
To:	Tejun Heo <tj@...nel.org>,
	One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>
cc:	Jiri Slaby <jslaby@...e.cz>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-kernel@...r.kernel.org, rostedt@...dmis.org,
	mingo@...hat.com, Andrew Morton <akpm@...ux-foundation.org>,
	andi@...stfloor.org, paulmck@...ux.vnet.ibm.com,
	Pavel Machek <pavel@....cz>, jirislaby@...il.com,
	Vojtech Pavlik <vojtech@...e.cz>, Michael Matz <matz@...e.de>
Subject: Re: kGraft to -next [was: 00/21 kGraft]

On Sat, 5 Jul 2014, Jiri Kosina wrote:

> > > The same holds for the kernel threads -- until all (or most of) the 
> > > kthreads are converted to workqueues, the obivous choice, that should 
> > > cover most of the use-cases, has been made.
> > 
> > But, this is different.  
> 
> Quite frankly, I have to say that I don't personally see *that* big 
> difference. In both cases we are making assumptions about semantics, and 
> are trying to get "as close as possible" to the point in time where the 
> set of assumptions can be made as minimal as possible.
> 
> With userspace thread, this is kernel/userspace boundary. With kthread, 
> this is starting of new iteration of the main loop / try_to_freeze().
> 
> We were not able to come up with anything better. Alan, you were 
> stating "I don't see why it can't use the kernel freeze functionality?". 
> What exactly was your suggestion, if not this, please?

Seems like there was no further activity on this wile I was on vacation, 
so let me resurrect this.

Alan, either we are already doing what you suggested, or I misunderstood 
your proposal above. Could you please elaborate?

Thanks,

-- 
Jiri Kosina
SUSE Labs
--
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/