linux-kernel - Re: [PATCH RFC tip/core/rcu 0/5] Expedited grace periods encouraging normal ones

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:	Thu, 02 Jul 2015 03:59:55 +0200
From:	Mike Galbraith <umgwanakikbuti@...il.com>
To:	josh@...htriplett.org
Cc:	paulmck@...ux.vnet.ibm.com, Peter Zijlstra <peterz@...radead.org>,
	linux-kernel@...r.kernel.org, mingo@...nel.org,
	laijs@...fujitsu.com, dipankar@...ibm.com,
	akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com,
	tglx@...utronix.de, rostedt@...dmis.org, dhowells@...hat.com,
	edumazet@...gle.com, dvhart@...ux.intel.com, fweisbec@...il.com,
	oleg@...hat.com, bobby.prani@...il.com
Subject: Re: [PATCH RFC tip/core/rcu 0/5] Expedited grace periods
 encouraging normal ones

On Wed, 2015-07-01 at 18:34 -0700, josh@...htriplett.org wrote:
> On Thu, Jul 02, 2015 at 03:11:24AM +0200, Mike Galbraith wrote:
> > On Wed, 2015-07-01 at 09:17 -0700, Paul E. McKenney wrote:
> > > On Wed, Jul 01, 2015 at 04:17:10PM +0200, Peter Zijlstra wrote:
> > > > On Wed, Jul 01, 2015 at 07:00:31AM -0700, Paul E. McKenney wrote:
> > > > 
> > > > > That is a bit extreme, Peter.
> > > > 
> > > > Of course; but I'm really not seeing people taking due care with them
> > > 
> > > ;-)
> > > 
> > > > > Are a huge pile of them coming in this merge window or something?
> > > > > What raised your concerns on this issue?
> > > > 
> > > > This is complete horse manure (breaking the nvidiot binary blob is a
> > > > good thing):
> > > > 
> > > > 74b51ee152b6 ("ACPI / osl: speedup grace period in acpi_os_map_cleanup")
> > > 
> > > Really???
> > > 
> > > I am not concerned about this one.  After all, one of the first things
> > > that people do for OS-jitter-sensitive workloads is to get rid of
> > > binary blobs.
> > 
> > I know two users who have no choice but to use the nvidia driver with
> > their realtime applications, as nouveau is not up to the task.
> 
> Sounds like they have a relatively loose definition of "realtime", then.

It would be better it they broke their beasts up into a bunch of small
synchronized boxen, but they use big boxen here and now, with realtime
rendering being a non-disposable portion of the load.

	-Mike

--
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/