On Fri, Oct 15, 2010 at 9:48 AM, Peter Zijlstra <pet...@infradead.org> wrote: > On Fri, 2010-10-15 at 10:02 +0300, Pekka Enberg wrote: >> On Fri, Oct 15, 2010 at 2:44 AM, richard -rw- weinberger >> <richard.weinber...@gmail.com> wrote: >> > On Thu, Oct 14, 2010 at 9:50 PM, Arjan van de Ven >> <ar...@linux.intel.com> wrote: >> >> On 10/14/2010 11:27 AM, richard -rw- weinberger wrote: >> >>> >> >>> Hi Arjan! >> >>> >> >>> This commit causes some problems on UML. >> >>> >> >> that is extremely weird. >> >>> >> >>> The kernel freezes after a few seconds until it gets some input. >> >>> e.g: When I run top it stops refreshing the process list until i >> press a >> >>> button. >> >> >> >> a slab timer change (to not be as critical) causing global timer >> issues.... >> >> that's very obviously not a problem with this patch. >> >> has this been seem anywhere except UML ? >> > >> > A small update: >> > It seems that CONFIG_NO_HZ is broken on UML. :-( >> > >> > CONFIG_NO_HZ + CONFIG_SLAB: works >> > CONFIG_NO_HZ + CONFIG_SLAB + your patch: broken >> > CONFIG_NO_HZ + CONFIG_SLUB: broken >> > >> > CONFIG_SLAB + your patch: works >> > CONFIG_SLAB: works >> > CONFIG_SLUB: works >> >> Thanks for testing! Thomas, Ingo, Peter, I'm not sure who maintains >> CONFIG_NO_HZ so I CC'd you. The problem here is that Arjan's >> deferrable timers patch in SLAB triggered something that looks like a >> latent bug with UML and NOHZ. > > Thomas does mostly, but if its UML specific, I guess its Jeff Dike > you'll be wanting to talk to, since he's the arch maintainer. >
Jeff is the UML maintainer only in theory. He seems to be very busy and hasn't touched UML since 2008. Very sad... -- Thanks, //richard ------------------------------------------------------------------------------ Download new Adobe(R) Flash(R) Builder(TM) 4 The new Adobe(R) Flex(R) 4 and Flash(R) Builder(TM) 4 (formerly Flex(R) Builder(TM)) enable the development of rich applications that run across multiple browsers and platforms. Download your free trials today! http://p.sf.net/sfu/adobe-dev2dev _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
