bpf: relax acquire for consumer_pos in ringbuf_process_ring()

Since r->consumer_pos is modified only by the user thread
in the given ringbuf context (and as such, it is thread-local)
it does not require a load-acquire.

Signed-off-by: Soham Bagchi <[email protected]>

Author: sohambagchi

tools/lib/bpf/ringbuf.c

@@ -241,7 +241,7 @@ static int64_t ringbuf_process_ring(struct ring *r, size_t n)
 	bool got_new_data;
 	void *sample;
 
-	cons_pos = smp_load_acquire(r->consumer_pos);
+	cons_pos = *r->consumer_pos;
 	do {
 		got_new_data = false;
 		prod_pos = smp_load_acquire(r->producer_pos);