#include <urcu/compiler.h>
#include <urcu/config.h>
+#include <urcu/syscall-compat.h>
#ifdef __cplusplus
extern "C" {
/*
* Architectures with cache coherency must _not_ define cmm_mc/cmm_rmc/cmm_wmc.
*
- * For them, cmm_mc/cmm_rmc/cmm_wmc are implemented with a * simple compiler barrier;
- * in addition, we provide defaults for cmm_mb (using GCC builtins) as well as
- * cmm_rmb and cmm_wmb (defaulting to cmm_mb).
+ * For them, cmm_mc/cmm_rmc/cmm_wmc are implemented with a simple
+ * compiler barrier; in addition, we provide defaults for cmm_mb (using
+ * GCC builtins) as well as cmm_rmb and cmm_wmb (defaulting to cmm_mb).
*/
#ifndef cmm_mb
/*
* Architectures without cache coherency need something like the following:
*
- * #define cmm_mc() arch_cache_flush()
+ * #define cmm_mc() arch_cache_flush()
* #define cmm_rmc() arch_cache_flush_read()
* #define cmm_wmc() arch_cache_flush_write()
*
- * Of these, only cmm_mc is mandatory. cmm_rmc and cmm_wmc default to cmm_mc.
- * cmm_mb/cmm_rmb/cmm_wmb use these definitions by default:
+ * Of these, only cmm_mc is mandatory. cmm_rmc and cmm_wmc default to
+ * cmm_mc. cmm_mb/cmm_rmb/cmm_wmb use these definitions by default:
*
- * #define cmm_mb() cmm_mc()
+ * #define cmm_mb() cmm_mc()
* #define cmm_rmb() cmm_rmc()
* #define cmm_wmb() cmm_wmc()
*/
#endif
#ifdef CONFIG_RCU_SMP
+#ifndef cmm_smp_mb
#define cmm_smp_mb() cmm_mb()
+#endif
+#ifndef cmm_smp_rmb
#define cmm_smp_rmb() cmm_rmb()
+#endif
+#ifndef cmm_smp_wmb
#define cmm_smp_wmb() cmm_wmb()
+#endif
+#ifndef cmm_smp_mc
#define cmm_smp_mc() cmm_mc()
+#endif
+#ifndef cmm_smp_rmc
#define cmm_smp_rmc() cmm_rmc()
+#endif
+#ifndef cmm_smp_wmc
#define cmm_smp_wmc() cmm_wmc()
+#endif
+#ifndef cmm_smp_read_barrier_depends
#define cmm_smp_read_barrier_depends() cmm_read_barrier_depends()
+#endif
#else
+#ifndef cmm_smp_mb
#define cmm_smp_mb() cmm_barrier()
+#endif
+#ifndef cmm_smp_rmb
#define cmm_smp_rmb() cmm_barrier()
+#endif
+#ifndef cmm_smp_wmb
#define cmm_smp_wmb() cmm_barrier()
+#endif
+#ifndef cmm_smp_mc
#define cmm_smp_mc() cmm_barrier()
+#endif
+#ifndef cmm_smp_rmc
#define cmm_smp_rmc() cmm_barrier()
+#endif
+#ifndef cmm_smp_wmc
#define cmm_smp_wmc() cmm_barrier()
+#endif
+#ifndef cmm_smp_read_barrier_depends
#define cmm_smp_read_barrier_depends()
#endif
+#endif
#ifndef caa_cpu_relax
#define caa_cpu_relax() cmm_barrier()
#endif
+#ifndef HAS_CAA_GET_CYCLES
+#define HAS_CAA_GET_CYCLES
+
+#include <time.h>
+#include <stdint.h>
+
+typedef uint64_t caa_cycles_t;
+
+static inline caa_cycles_t caa_get_cycles (void)
+{
+ struct timespec ts;
+
+ if (caa_unlikely(clock_gettime(CLOCK_MONOTONIC, &ts)))
+ return -1ULL;
+ return ((uint64_t) ts.tv_sec * 1000000000ULL) + ts.tv_nsec;
+}
+#endif /* HAS_CAA_GET_CYCLES */
+
#ifdef __cplusplus
}
#endif