/*
* 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()
*
#ifndef HAS_CAA_GET_CYCLES
#define HAS_CAA_GET_CYCLES
-typedef unsigned long long cycles_t;
-static inline cycles_t caa_get_cycles (void)
+#include <time.h>
+#include <stdint.h>
+
+typedef uint64_t caa_cycles_t;
+
+static inline caa_cycles_t caa_get_cycles (void)
{
- cycles_t thetime;
- struct timeval tv;
+ struct timespec ts;
- if (gettimeofday(&tv, NULL) != 0)
- return 0;
- thetime = ((cycles_t)tv.tv_sec) * 1000000ULL + ((cycles_t)tv.tv_usec);
- return (cycles_t)thetime;
+ 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 */