ust: add userspace rcu support

[ust.git] / share / kernelcompat.h

diff --git a/share/kernelcompat.h b/share/kernelcompat.h
index 9139e75275ddf4c8c3e86d7d30c0916b32233b6d..f95d0d77e886d17090b41c8be0c556935e2df399 100644 (file)
--- a/share/kernelcompat.h
+++ b/share/kernelcompat.h
@@ -98,21 +98,21 @@ typedef int spinlock_t;
 
 /* MEMORY BARRIERS */
 
-#define smp_rmb() do {} while(0)
-#define smp_wmb() do {} while(0)
-#define smp_mb() do {} while(0)
+//#define smp_rmb() do {} while(0)
+//#define smp_wmb() do {} while(0)
+//#define smp_mb() do {} while(0)
 #define smp_mb__after_atomic_inc() do {} while(0)
 
 #define read_barrier_depends() do {} while(0)
-#define smp_read_barrier_depends() do {} while(0)
+//#define smp_read_barrier_depends() do {} while(0)
 
 /* RCU */
 
-#define rcu_assign_pointer(a, b) do {} while(0)
-#define call_rcu_sched(a,b) do {} while(0)
-#define rcu_barrier_sched() do {} while(0)
-#define rcu_read_lock_sched_notrace() do{} while (0)
-#define rcu_read_unlock_sched_notrace() do{} while (0)
+#include "urcu.h"
+#define call_rcu_sched(a,b) b(a); synchronize_rcu()
+#define rcu_barrier_sched() do {} while(0) /* this nop is ok if call_rcu_sched does a synchronize_rcu() */
+#define rcu_read_lock_sched_notrace() rcu_read_lock()
+#define rcu_read_unlock_sched_notrace() rcu_read_unlock()
 
 /* ATOMICITY */
 
@@ -147,7 +147,7 @@ static int atomic_read(atomic_t *p)
 
 #include "asm.h"
 
-#define __xg(x) ((volatile long *)(x))
+//#define __xg(x) ((volatile long *)(x))
 
 #define cmpxchg(ptr, o, n)                                             \
        ((__typeof__(*(ptr)))__cmpxchg((ptr), (unsigned long)(o),       \