Contribute back how and where? Definitely not to Gentoo if we look at the meagre numbers here.
One example is virtualization: the virtio stack is maintained by Red Hat (afaik). This is a huge driver behind the “democratization” of virtualization in general, allowing users and small companies to access performant virt without selling a kidney to VMware.
Also, Red Hat contributes to or maintains all of the components involved in OpenShift and OpenStack (one of which is virtio!).
Red Hat primarily contributes code to the kernel and various OSS projects, paid for by the clients on enterprise contracts. A paying client needs something and it gets done. Then the rest of us get to benefit by receiving the code for free. It’s a beautiful model.
If you look at lists of top contributors, Red Hat (along with the usual suspects in enterprise) are consistently at the top.
For example:
- Red Hat Identity Management -> FreeIPA (i.e. Active Directory for Linux)
- Red Hat Satellite -> The Foreman + Katello
- Ansible ... Ansible.
- Red Hat OpenShift -> OKD
- And more I'm not going to list.Not really comparable to the experiences i have running keycloak where the upstream documentation is complete or freeipa where it’s identical to idm and you can just use the redhat docs. Those are both excellent pieces of software we are lucky to have.
It looks like they're second to Intel, at least by LF's metric. That said driver code tends to be take up a lot of space compared to other areas. Just look at the mass of AMD template garbage here: https://github.com/torvalds/linux/tree/master/drivers/gpu/dr...