X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=os-linux.h;h=5f0ef8214fcac07a32d629dbaea2fa9a9a209d15;hp=421baffb25342458d4005111a8cf804156853724;hb=9ebc27e1352b905fe3396ce2350a7765fe9c57b8;hpb=22f78b320a8d2ffa32b5736fe754c108a8d21525

diff --git a/os-linux.h b/os-linux.h
index 421baffb..5f0ef821 100644
--- a/os-linux.h
+++ b/os-linux.h
@@ -16,10 +16,12 @@
 #define FIO_HAVE_IOPRIO
 #define FIO_HAVE_SPLICE
 #define FIO_HAVE_IOSCHED_SWITCH
+#define FIO_HAVE_ODIRECT
 
 #define OS_MAP_ANON		(MAP_ANONYMOUS)
 
 typedef cpu_set_t os_cpu_mask_t;
+typedef struct drand48_data os_random_state_t;
 
 /*
  * we want fadvise64 really, but it's so tangled... later
@@ -87,4 +89,37 @@ static inline int blockdev_size(int fd, unsigned long long *bytes)
 	return errno;
 }
 
+static inline unsigned long long os_phys_mem(void)
+{
+	long pagesize, pages;
+
+	pagesize = sysconf(_SC_PAGESIZE);
+	pages = sysconf(_SC_PHYS_PAGES);
+	if (pages == -1 || pagesize == -1)
+		return 0;
+
+	return (unsigned long long) pages * (unsigned long long) pagesize;
+}
+
+static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
+{
+	srand48_r(seed, rs);
+}
+
+static inline long os_random_long(os_random_state_t *rs)
+{
+	long val;
+
+	lrand48_r(rs, &val);
+	return val;
+}
+
+static inline double os_random_double(os_random_state_t *rs)
+{
+	double val;
+
+	drand48_r(rs, &val);
+	return val;
+}
+
 #endif