On Fri, Jun 25 2021 at 12:10, Kurt Kanzenbach wrote: > FUTEX_LOCK_PI2 is a new futex operation which was recently introduced into the > Linux kernel. It works exactly like FUTEX_LOCK_PI. However, it has support for > selectable clocks for timeouts. By default CLOCK_MONOTONIC is used. If > FUTEX_CLOCK_REALTIME is specified then the timeout is measured against > CLOCK_REALTIME. > > This new operation addresses an inconsistency in the futex interface: > FUTEX_LOCK_PI only works with timeouts based on CLOCK_REALTIME in contrast to > all the other PI operations. > > Document the FUTEX_LOCK_PI2 command. > > Signed-off-by: Kurt Kanzenbach <kurt@xxxxxxxxxxxxx> Reviewed-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
