KFunc bpf_iter_scx_dsq_new
This function creates a DSQ iterator.
Definition
Initialize BPF iterator it which can be used with bpf_for_each to walk tasks in the DSQ specified by dsq_id. Iteration using it only includes tasks which are already queued when this function is invoked.
Parameters
it: iterator to initialize
dsq_id: DSQ to iterate
flags: SCX_DSQ_ITER_*
Flags
SCX_DSQ_ITER_REV: iterate in the reverse dispatch order
Returns
0 on success, negative error code on failure
Signature
int bpf_iter_scx_dsq_new(struct bpf_iter_scx_dsq *it, u64 dsq_id, u64 flags)
Note
This kfunc is RCU protected. This means that the kfunc can be called from RCU read-side critical section.
If a program isn't called from RCU read-side critical section, such as sleepable programs, the
bpf_rcu_read_lock and
bpf_rcu_read_unlock to protect the calls to such KFuncs.
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