Just over a year has passed since the futex_waitv() syscall, part of the new futex2 systems calls, landed in Linux 5.16. But why are both futex2 and futex_waitv needed? What role do they play in the context gaming on Linux? Let’s find out by taking a closer look at the futex syscall.

Source: LXer – The futex_waitv() syscall and gaming on Linux