X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=os-linux.h;h=f9094cb437148929c336ac1cd109ef15300188de;hp=865853ba4ec83381cea5059e37b808020bbd37fa;hb=bbfd6b00dea4daee05133c8cb991b78d091df9ae;hpb=8756e4d421722eaeb089067aeaaf317d05d53a57

diff --git a/os-linux.h b/os-linux.h
index 865853ba..f9094cb4 100644
--- a/os-linux.h
+++ b/os-linux.h
@@ -3,6 +3,8 @@
 
 #include <sys/ioctl.h>
 #include <sys/uio.h>
+#include <sys/syscall.h>
+#include <unistd.h>
 #include <asm/unistd.h>
 
 #define FIO_HAVE_LIBAIO
@@ -13,10 +15,12 @@
 #define FIO_HAVE_SGIO
 #define FIO_HAVE_IOPRIO
 #define FIO_HAVE_SPLICE
+#define FIO_HAVE_IOSCHED_SWITCH
 
 #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
@@ -62,6 +66,8 @@ static inline int vmsplice(int fd, const struct iovec *iov,
 #define SPLICE_F_MORE	(0x04)	/* expect more data */
 #define SPLICE_F_GIFT   (0x08)  /* pages passed in are a gift */
 
+#define SPLICE_DEF_SIZE	(64*1024)
+
 enum {
 	IOPRIO_WHO_PROCESS = 1,
 	IOPRIO_WHO_PGRP,
@@ -82,4 +88,37 @@ 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