X-Git-Url: https://git.liburcu.org/?p=urcu.git;a=blobdiff_plain;f=urcu-qsbr-static.h;h=86f0fc507449451d70f276571d3c6aa1be61d98a;hp=2816621f7296d0203e0551d5010d48d9028cfd56;hb=0ecb3fde04135d76545ce55d80abea9aef465b54;hpb=02be55611d3b1c7bf4fdfcb3a9c98f621882d417

diff --git a/urcu-qsbr-static.h b/urcu-qsbr-static.h
index 2816621..86f0fc5 100644
--- a/urcu-qsbr-static.h
+++ b/urcu-qsbr-static.h
@@ -121,11 +121,6 @@ static inline void debug_yield_init(void)
 }
 #endif
 
-static inline void reader_barrier()
-{
-	smp_mb();
-}
-
 #define RCU_GP_ONLINE		(1UL << 0)
 #define RCU_GP_CTR		(1UL << 1)
 
@@ -140,7 +135,7 @@ struct rcu_reader {
 	/* Data used by both reader and synchronize_rcu() */
 	unsigned long ctr;
 	/* Data used for registry */
-	struct list_head head __attribute__((aligned(CACHE_LINE_SIZE)));
+	struct list_head node __attribute__((aligned(CACHE_LINE_SIZE)));
 	pthread_t tid;
 };
 
@@ -160,27 +155,13 @@ static inline void wake_up_gp(void)
 	}
 }
 
-#if (BITS_PER_LONG < 64)
-static inline int rcu_gp_ongoing(unsigned long *value)
-{
-	unsigned long reader_gp;
-
-	if (value == NULL)
-		return 0;
-	reader_gp = LOAD_SHARED(*value);
-	return reader_gp && ((reader_gp ^ rcu_gp_ctr) & RCU_GP_CTR);
-}
-#else /* !(BITS_PER_LONG < 64) */
-static inline int rcu_gp_ongoing(unsigned long *value)
+static inline int rcu_gp_ongoing(unsigned long *ctr)
 {
-	unsigned long reader_gp;
+	unsigned long v;
 
-	if (value == NULL)
-		return 0;
-	reader_gp = LOAD_SHARED(*value);
-	return reader_gp && (reader_gp - rcu_gp_ctr > ULONG_MAX / 2);
+	v = LOAD_SHARED(*ctr);
+	return v && (v != rcu_gp_ctr);
 }
-#endif  /* !(BITS_PER_LONG < 64) */
 
 static inline void _rcu_read_lock(void)
 {