linux-kernel - Re: [RFC][PATCH 0/7] locking: qspinlock

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 for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20140312162328.GH27965@twins.programming.kicks-ass.net>
Date:	Wed, 12 Mar 2014 17:23:28 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Dave Chinner <david@...morbit.com>,
	Waiman Long <waiman.long@...com>, arnd@...db.de,
	linux-arch@...r.kernel.org, x86@...nel.org,
	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	walken@...gle.com, andi@...stfloor.org, riel@...hat.com,
	paulmck@...ux.vnet.ibm.com, torvalds@...ux-foundation.org,
	oleg@...hat.com
Subject: Re: [RFC][PATCH 0/7] locking: qspinlock

On Wed, Mar 12, 2014 at 12:19:33PM -0400, Steven Rostedt wrote:
> On Wed, 12 Mar 2014 16:57:54 +0100
> Peter Zijlstra <peterz@...radead.org> wrote:
> 
> 
> > I build and booted these patches against tip/master as of this morning.
> > It build ~50 defconfig kernels on my WSM-EP.
> > 
> > I've not managed to reproduce the hang as reported by Dave, but then I
> > doubt building kernels has anywhere near the lock contention he
> > generated.
> > 
> 
> Have you tried hackbench? That usually gives rq spinlocks a bit of
> contention.

Ha!, bang it goes. I suppose my userspace contention is too nice or
something for not triggering this.

Lemme try and put it together again :-)
--
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/