KFunc scx_bpf_kick_cpu
This function triggers reschedule on a CPU.
Definition
Kick cpu into rescheduling. This can be used to wake up an idle CPU or trigger rescheduling on a busy CPU. This can be called from any online scx_ops operation and the actual kicking is performed asynchronously through an irq work.
cpu: cpu to kick
flags: SCX_KICK_* flags
Flags
SCX_KICK_IDLE: Kick the target CPU if idle. Guarantees that the target CPU goes through at least one full scheduling cycle before going idle. If the target CPU can be determined to be currently not idle and going to go through a scheduling cycle before going idle, noop.
SCX_KICK_PREEMPT: Preempt the current task and execute the dispatch path. If the current task of the target CPU is an SCX task, its ->scx.slice is cleared to zero before the scheduling path is invoked so that the task expires and the dispatch path is invoked.
SCX_KICK_WAIT: Wait for the CPU to be rescheduled. The scx_bpf_kick_cpu call will return after the target CPU finishes picking the next task.
Signature
void scx_bpf_kick_cpu(s32 cpu, u64 flags)
Usage
Docs could be improved
This part of the docs is incomplete, contributions are very welcome
Program types
The following program types can make use of this kfunc:
Example
Docs could be improved
This part of the docs is incomplete, contributions are very welcome