Messages in this thread | | | Date | Thu, 24 Mar 2011 21:14:37 +0200 | Subject | Re: [GIT PULL] SLAB changes for v2.6.39-rc1 | From | Pekka Enberg <> |
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On Thu, Mar 24, 2011 at 9:05 PM, Christoph Lameter <cl@linux.com> wrote: > On Thu, 24 Mar 2011, Pekka Enberg wrote: > >> It hanged here which is pretty much expected on this box if >> kmem_cache_init() oopses. I'm now trying to see if I'm able to find >> the config option that breaks things. CONFIG_PREEMPT_NONE is a >> suspect: >> >> penberg@tiger:~/linux$ grep PREEMPT ../config-ingo >> # CONFIG_PREEMPT_RCU is not set >> CONFIG_PREEMPT_NONE=y >> # CONFIG_PREEMPT_VOLUNTARY is not set >> # CONFIG_PREEMPT is not set > > The following patch should ensure that all percpu data is touched > before any emulation functions are called: > > --- > mm/slub.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > Index: linux-2.6/mm/slub.c > =================================================================== > --- linux-2.6.orig/mm/slub.c 2011-03-24 14:03:10.000000000 -0500 > +++ linux-2.6/mm/slub.c 2011-03-24 14:04:08.000000000 -0500 > @@ -1604,7 +1604,7 @@ static inline void note_cmpxchg_failure( > > void init_kmem_cache_cpus(struct kmem_cache *s) > { > -#if defined(CONFIG_CMPXCHG_LOCAL) && defined(CONFIG_PREEMPT) > +#ifdef CONFIG_CMPXCHG_LOCAL > int cpu; > > for_each_possible_cpu(cpu) >
Ingo, can you try this patch out, please? I'm compiling here but unfortunately I'm stuck with a really slow laptop... -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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