On Sat, 2015-05-09 at 09:05 +0200, Ingo Molnar wrote: > * Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote: > > > On Fri, 8 May 2015 19:11:10 -0400 Chris Metcalf <cmetcalf@xxxxxxxxxx> wrote: > > > > > On 5/8/2015 5:22 PM, Steven Rostedt wrote: > > > > On Fri, 8 May 2015 14:18:24 -0700 > > > > Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote: > > > > > > > >> On Fri, 8 May 2015 13:58:41 -0400 Chris Metcalf <cmetcalf@xxxxxxxxxx> wrote: > > > >> > > > >>> A prctl() option (PR_SET_DATAPLANE) is added > > > >> Dumb question: what does the term "dataplane" mean in this context? I > > > >> can't see the relationship between those words and what this patch > > > >> does. > > > > I was thinking the same thing. I haven't gotten around to searching > > > > DATAPLANE yet. > > > > > > > > I would assume we want a name that is more meaningful for what is > > > > happening. > > > > > > The text in the commit message and the 0/6 cover letter do try to explain > > > the concept. The terminology comes, I think, from networking line cards, > > > where the "dataplane" is the part of the application that handles all the > > > fast path processing of network packets, and the "control plane" is the part > > > that handles routing updates, etc., generally slow-path stuff. I've probably > > > just been using the terms so long they seem normal to me. > > > > > > That said, what would be clearer? NO_HZ_STRICT as a superset of > > > NO_HZ_FULL? Or move away from the NO_HZ terminology a bit; after all, > > > we're talking about no interrupts of any kind, and maybe NO_HZ is too > > > limited in scope? So, NO_INTERRUPTS? USERSPACE_ONLY? Or look > > > to vendors who ship bare-metal runtimes and call it BARE_METAL? > > > Borrow the Tilera marketing name and call it ZERO_OVERHEAD? > > > > > > Maybe BARE_METAL seems most plausible -- after DATAPLANE, to me, > > > of course :-) > > 'baremetal' has uses in virtualization speak, so I think that would be > confusing. > > > I like NO_INTERRUPTS. Simple, direct. > > NO_HZ_PURE? Hm, coke light, coke zero... OS_LIGHT and OS_ZERO? -Mike -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
