On Sat, 31 Oct 2009, Pavel Machek wrote: > > Giving rt tasks access to memory reserves is necessary to reduce latency, > > the privilege does not apply to interrupts that subsequently get run on > > the same cpu. > > If rt task needs to allocate memory like that, then its broken, > anyway... >
Um, no, it's a matter of the kernel implementation. We allow such tasks to allocate deeper into reserves to avoid the page allocator from incurring a significant penalty when direct reclaim is required. Background reclaim has already commenced at this point in the slowpath. -- 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
