bpf_percpu_lru_pop_free

Name:bpf_percpu_lru_pop_free

Proto:static struct bpf_lru_node *bpf_percpu_lru_pop_free(struct bpf_lru *lru, u32 hash)

Type:struct bpf_lru_node

Parameter:

Type	Parameter	Name
struct bpf_lru *	lru
u32	hash

403

struct bpf_lru_node * node = NULL

406

cpu = These macros fold the SMP functionality into a single CPU system()

408

l = per_cpu_ptr(percpu_lru, cpu)

410

raw_spin_lock_irqsave( & lock, flags)

412

1. Rotate the active list (if needed)* 2. Always rotate the inactive list

414

free_list = lists[BPF_LRU_LIST_T_FREE]

415

If list_empty - tests whether a list is empty*@head: the list to test. Then Calls __bpf_lru_list_shrink_inactive() to shrink some* ref-bit-cleared nodes and move them to the designated* free list

419

If Not list_empty - tests whether a list is empty*@head: the list to test. Then

420

node = list_first_entry - get the first element from a list*@ptr: the list head to take the element from.*@type: the type of the struct this is embedded in.*@member: the name of the list_head within the struct.* Note, that list is expected to be not empty.(free_list, structbpf_lru_node, list)

421

*(node + hash_offset) = hash

422

ref = 0

423

Move nodes between or within active and inactive list (like* active to inactive, inactive to active or tail of active back to* the head of active).

426

raw_spin_unlock_irqrestore( & lock, flags)

428

Return node

**Caller**
Name	Describe
bpf_lru_pop_free

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