KFunc scx_bpf_select_cpu_dfl
This function is the default implementation of ops.select_cpu()
Definition
Can only be called from ops.select_cpu() if the built-in CPU selection is enabled, ops.update_idle() is missing, or SCX_OPS_KEEP_BUILTIN_IDLE is set. p, prev_cpu and wake_flags match ops.select_cpu().
Parameters
p: task_struct to select a CPU for
prev_cpu: CPU p was on previously
wake_flags: SCX_WAKE_* flags
is_idle: out parameter indicating whether the returned CPU is idle
Returns
The picked CPU with is_idle indicating whether the picked CPU is currently idle and thus a good candidate for direct dispatching.
Signature
s32 scx_bpf_select_cpu_dfl(struct task_struct *p, s32 prev_cpu, u64 wake_flags, bool *is_idle)
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