kernel/bpf/ringbuf.c

21 	(offsetof(struct bpf_ringbuf, consumer_pos) >> PAGE_SHIFT)
75 	unsigned long consumer_pos __aligned(PAGE_SIZE);
186 	rb->consumer_pos = 0;
282 		/* allow writable mapping for the consumer_pos only */
319 	cons_pos = smp_load_acquire(&rb->consumer_pos);
476 	cons_pos = smp_load_acquire(&rb->consumer_pos);
579 	cons_pos = smp_load_acquire(&rb->consumer_pos) & rb->mask;
653 		return smp_load_acquire(&rb->consumer_pos);
760 	cons_pos = smp_load_acquire(&rb->consumer_pos);
790 		smp_store_release(&rb->consumer_pos, cons_pos + total_len);
805 	u64 consumer_pos;
809 	 * prevents another task from writing to consumer_pos after it was read
812 	consumer_pos = rb->consumer_pos;
814 	smp_store_release(&rb->consumer_pos, consumer_pos + rounded_size);