Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:include\linux\ptr_ring.h Create Date:2022-07-28 13:22:51
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Name:Note: callers invoking this in a loop must use a compiler barrier,* for example cpu_relax(). Callers must hold producer_lock.* Callers are responsible for making sure pointer that is being queued* points to a valid data.

Proto:static inline int __ptr_ring_produce(struct ptr_ring *r, void *ptr)

Type:int

Parameter:

TypeParameterName
struct ptr_ring *r
void *ptr
105  If Value for the false possibility is greater at compile time(! Read-only by both the producer and the consumer ) || queue[producer] Then Return -ENOSPC
110  smp_wmb()
112  WRITE_ONCE(queue[producer++], ptr)
113  If Value for the false possibility is greater at compile time(producer >= Read-only by both the producer and the consumer ) Then producer = 0
115  Return 0
Caller
NameDescribe
bq_flush_to_queue