kernel/bpf/ringbuf.c

300 	cons_pos = smp_load_acquire(&rb->consumer_pos);
301 	prod_pos = smp_load_acquire(&rb->producer_pos);
418 	cons_pos = smp_load_acquire(&rb->consumer_pos);
443 	/* pairs with consumer's smp_load_acquire() */
490 	cons_pos = smp_load_acquire(&rb->consumer_pos) & rb->mask;
564 		return smp_load_acquire(&rb->consumer_pos);
566 		return smp_load_acquire(&rb->producer_pos);
664 	prod_pos = smp_load_acquire(&rb->producer_pos);
669 	cons_pos = smp_load_acquire(&rb->consumer_pos);
675 	hdr_len = smp_load_acquire(hdr);
717 	/* Using smp_load_acquire() is unnecessary here, as the busy-bit
719 	 * by this task with smp_load_acquire() in __bpf_user_ringbuf_peek().
722 	 /* Synchronizes with smp_load_acquire() in user-space producer. */