Re: [RFC][PATCH 00/31] implement atomic_fetch_$op

[Fengguang Wu]

On Fri, Apr 22, 2016 at 11:44:55AM +0200, Peter Zijlstra wrote:
> On Fri, Apr 22, 2016 at 11:04:13AM +0200, Peter Zijlstra wrote:
> > The one that I did not do was ARMv8.1-LSE and I was hoping Will would help out
> > with that. Also, it looks like the 0-day built bot does not do arm64 builds,
> > people might want to look into that.
> 
> OK, weirdness. I received the "BUILD SUCCESS" email without any arm64
> builds listed, but I just received a build bot email telling me the
> arm64 build was borked (which I know it is).

Sorry, that may happen because even though most errors will be
detected in the first hour or before the BUILD SUCCESS/DONE
notification, the build/boot/performance tests for a particular branch
may continue for days, during the time test coverage keeps growing.
Which means it's possible to receive a build failure after receiving
BUILD SUCCESS notification.

In particular, 0-day bot classify 500+ kconfigs into 2 priority lists:

P1: 100+ realtime priority kconfigs which should be finished before sending
    out BUILD SUCCESS notification

P2: 400+ background priority kconfigs which may take hours to days to finish

That split is a tradeoff between timeliness and completeness. It turns
out to work well as long as we choose the suitable P1 list.

So the more accurate interpretation of "BUILD SUCCESS/DONE" would be:
0day bot is working on your tree (no worry about out-of-service) and
reached a major milestone.

I'll add arm64-defconfig to P1 list to improve its coverage.

Thanks,
Fengguang