[riot-notifications] [RIOT-OS/RIOT] sys/evtimer: introduce ZTIMER_MSEC as timer backend (#13661)

Kaspar Schleiser notifications at github.com
Tue May 19 21:44:13 CEST 2020

> We recently had a situation in which `make info-boards-supported` took over 15 seconds, without the number of dependency recursions being increased. With roughly 200 boards supported and assuming the recursion stops on average after 5 steps, something taking 1ms during dependency resolution will result in `make info-boards-supported` taking one second longer. When the CI runs `make info-boards-supported` for the 385 tests an additional millisecond spent in `Makefile.dep` becomes 6 minutes 25 seconds of additional CPU time. (Of course, the CI will run on many workers, but the impact should still be noticeable.)

Yeah, well, adding to pseudomodules doesn't increase recursion depth. I'm just saying.

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