[PATCH 3/3] sched/deadline: reduce rq lock contention by eliminating locking of non-feasible target

This patch adds check that prevents futile attempts to move dl tasks to a CPU with active tasks of equal or earlier deadline. The same behavior as commit 80e3d87b2c55 ("sched/rt: Reduce rq lock contention by eliminating locking of non-feasible target") for rt class. Signed-off-by: Wanpeng Li ---

[PATCH 3/3] sched/deadline: reduce rq lock contention by eliminating locking of non-feasible target

This patch adds check that prevents futile attempts to move dl tasks to a CPU with active tasks of equal or earlier deadline. The same behavior as commit 80e3d87b2c55 (sched/rt: Reduce rq lock contention by eliminating locking of non-feasible target) for rt class. Signed-off-by: Wanpeng Li