X-Git-Url: https://git.liburcu.org/?a=blobdiff_plain;f=share%2Fkernelcompat.h;h=052f7688bb9f36d804529eca4ca65176fc04c428;hb=1ae7f0744f280e97ab1a2adc548b8fd9f2cb21a4;hp=9139e75275ddf4c8c3e86d7d30c0916b32233b6d;hpb=98963de4a2dfae12d8aafa0f9a6d97cf4a44e12d;p=ust.git

diff --git a/share/kernelcompat.h b/share/kernelcompat.h
index 9139e75..052f768 100644
--- a/share/kernelcompat.h
+++ b/share/kernelcompat.h
@@ -1,6 +1,8 @@
 #ifndef KERNELCOMPAT_H
 #define KERNELCOMPAT_H
 
+#include <kcompat.h>
+
 #include "compiler.h"
 
 #include <string.h>
@@ -40,12 +42,12 @@ static inline long IS_ERR(const void *ptr)
 
 /* FIXED SIZE INTEGERS */
 
-#include <stdint.h>
+//#include <stdint.h>
 
-typedef uint8_t u8;
-typedef uint16_t u16;
-typedef uint32_t u32;
-typedef uint64_t u64;
+//typedef uint8_t u8;
+//typedef uint16_t u16;
+//typedef uint32_t u32;
+//typedef uint64_t u64;
 
 #define min_t(type, x, y) ({                    \
 	type __min1 = (x);                      \
@@ -98,28 +100,20 @@ 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_mb__after_atomic_inc() do {} while(0)
 
-#define 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 */
 
 #include <signal.h>
 
-typedef struct { sig_atomic_t counter; } atomic_t;
-
 static inline int atomic_dec_and_test(atomic_t *p)
 {
 	(p->counter)--;
@@ -147,45 +141,12 @@ 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),	\
 				       (unsigned long)(n), sizeof(*(ptr))))
 
-static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
-				      unsigned long new, int size)
-{
-	unsigned long prev;
-	switch (size) {
-	case 1:
-		asm volatile("lock; cmpxchgb %b1,%2"
-			     : "=a"(prev)
-			     : "q"(new), "m"(*__xg(ptr)), "0"(old)
-			     : "memory");
-		return prev;
-	case 2:
-		asm volatile("lock; cmpxchgw %w1,%2"
-			     : "=a"(prev)
-			     : "r"(new), "m"(*__xg(ptr)), "0"(old)
-			     : "memory");
-		return prev;
-	case 4:
-		asm volatile("lock; cmpxchgl %k1,%2"
-			     : "=a"(prev)
-			     : "r"(new), "m"(*__xg(ptr)), "0"(old)
-			     : "memory");
-		return prev;
-	case 8:
-		asm volatile("lock; cmpxchgq %1,%2"
-			     : "=a"(prev)
-			     : "r"(new), "m"(*__xg(ptr)), "0"(old)
-			     : "memory");
-		return prev;
-	}
-	return old;
-}
-
 //#define local_cmpxchg cmpxchg
 #define local_cmpxchg(l, o, n) (cmpxchg(&((l)->a.counter), (o), (n)))