bpf_map_alloc_id

Name:bpf_map_alloc_id

Proto:static int bpf_map_alloc_id(struct bpf_map *map)

Type:int

Parameter:

Type	Parameter	Name
struct bpf_map *	map

278

dr_preload - preload for idr_alloc()*@gfp_mask: allocation mask to use for preloading* Preallocate memory to use for the next call to idr_alloc(). This function* returns with preemption disabled. It will be enabled by idr_preload_end().

279

spin_lock_bh( & map_idr_lock)

280

id = dr_alloc_cyclic() - Allocate an ID cyclically.*@idr: IDR handle.*@ptr: Pointer to be associated with the new ID.*@start: The minimum ID (inclusive).*@end: The maximum ID (exclusive).*@gfp: Memory allocation flags.

281

If id > 0 Then id = id

283

spin_unlock_bh( & map_idr_lock)

284

dr_preload_end - end preload section started with idr_preload()* Each idr_preload() should be matched with an invocation of this* function. See idr_preload() for details.

286

If WARN_ON_ONCE(!id) Then Return -ENOSPC

289

Return If id > 0 Then 0 Else id

**Caller**
Name	Describe
map_create	alled via syscall

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