sched_ext: Merge branch 'sched/core' of git://git.kernel.org/pub/scm/linux/kernel...

sched_ext: Merge branch 'sched/core' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into for-6.19

Pull in tip/sched/core to receive:

 50653216e4ff ("sched: Add support to pick functions to take rf")
 4c95380701f5 ("sched/ext: Fold balance_scx() into pick_task_scx()")

which will enable clean integration of DL server support among other things.

This conflicts with the following from sched_ext/for-6.18-fixes:

 a8ad873113d3 ("sched_ext: defer queue_balance_callback() until after ops.dispatch")

which adds maybe_queue_balance_callback() to balance_scx() which is removed
by 50653216e4ff. Resolve by moving the invocation to pick_task_scx() in the
equivalent location.

Signed-off-by: Tejun Heo <tj@kernel.org>