What means 'upstream' in context of linux kernel development?

[ND8801]

Hi! What means ‘upstream’ in context of linux kernel development?

[sampsonf (Sampson Fung)]

To me, it means the source released by Linus.

[hhlp (Héctor Louzao)]

All software are based on upstream which means in the origin/source of the software:

References

Upstream (software development)

Regards.,

[ersen]

It means the code originally released in Linus Torvalds’ source tree:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/