drm subsystem contributor numbers

I'm doing a podcast recording this week, so I wanted to run some numbers so I could have some facts rather than feels. It turns out my feels were off by a factor of 3 or so.

If asked, I've always said the contributor count to the drm subsystem is probably in the 100 or so developers per release cycle.

Did the simplest:

git log --format='%aN' v6.14..v6.15 drivers/gpu/drm/ include/uapi/drm/ include/drm/ | sort -u | wc -l

Iterated over a few kernel releases

v6.15 326 v6.16 322 v6.17 300 v6.18 334 v6.19 332 v7.0-rc6 346

The number for the complete kernel in those scenarios are ~2000 usually, which means drm subsystem has around 15-16% of the kernel contributors.

I'm a bit spun out, that's quite a lot of people. I think I'll blame Sima for it. This also explains why I'm a bit out of touch with the process problems other maintainers have, and when I say stuff like a lot of workflows don't scale, this is what I mean.