Christoph Lameter wrote: >> There already are two patches for this acked by Ingo/Tejun, which Tejun is >> going to take through his tree tomorrow. >> >> http://lkml.org/lkml/2009/10/27/132 > > per cpu alloc from an atomic context without passing gfp flags through to > the page allocator? That does not look right. Sure wish that the percpu > allocator would be working from atomic contexts for other cases.
It's just for sched_init() which has irq off but is not really in atomic context and does GFP_KERNEL allocations. The following comment has been added to the first patch to explain it. + * allocations are done using GFP_KERNEL with pcpu_lock released. In + * general, percpu memory can't be allocated with irq off but + * irqsave/restore are still used in alloc path so that it can be used + * from early init path - sched_init() specifically. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe kernel-testers" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
