Static error value checking

[fio.git] / os-linux.h

diff --git a/os-linux.h b/os-linux.h
index 865853ba4ec83381cea5059e37b808020bbd37fa..657a679e23486e0e8e319d3cc10dd8f8a7c635f4 100644 (file)
--- a/os-linux.h
+++ b/os-linux.h
@@ -3,7 +3,10 @@
 
 #include <sys/ioctl.h>
 #include <sys/uio.h>
-#include <asm/unistd.h>
+#include <sys/syscall.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <linux/unistd.h>
 
 #define FIO_HAVE_LIBAIO
 #define FIO_HAVE_POSIXAIO
@@ -13,10 +16,21 @@
 #define FIO_HAVE_SGIO
 #define FIO_HAVE_IOPRIO
 #define FIO_HAVE_SPLICE
+#define FIO_HAVE_IOSCHED_SWITCH
+#define FIO_HAVE_ODIRECT
+#define FIO_HAVE_HUGETLB
+
+/*
+ * Only for x86 currently
+ */
+#if defined(__i386__)
+#define FIO_HAVE_SYSLET
+#endif
 
 #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
@@ -34,33 +48,67 @@ static inline int ioprio_set(int which, int who, int ioprio)
        return syscall(__NR_ioprio_set, which, who, ioprio);
 }
 
-static _syscall6(int, sys_splice, int, fdin, loff_t *, off_in, int, fdout, loff_t *, off_out, size_t, len, unsigned int, flags);
-static _syscall4(int, sys_vmsplice, int, fd, const struct iovec *, iov, unsigned long, nr_segs, unsigned int, flags);
-static _syscall4(int, sys_tee, int, fdin, int, fdout, size_t, len, unsigned int, flags);
+/*
+ * Just check for SPLICE_F_MOVE, if that isn't there, assume the others
+ * aren't either.
+ */
+#ifndef SPLICE_F_MOVE
+#define SPLICE_F_MOVE  (0x01)  /* move pages instead of copying */
+#define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */
+                                /* we may still block on the fd we splice */
+                                /* from/to, of course */
+#define SPLICE_F_MORE  (0x04)  /* expect more data */
+#define SPLICE_F_GIFT   (0x08)  /* pages passed in are a gift */
 
 static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out,
                         size_t len, unsigned long flags)
 {
-       return sys_splice(fdin, off_in, fdout, off_out, len, flags);
+       return syscall(__NR_sys_splice, fdin, off_in, fdout, off_out, len, flags);
 }
 
 static inline int tee(int fdin, int fdout, size_t len, unsigned int flags)
 {
-       return sys_tee(fdin, fdout, len, flags);
+       return syscall(__NR_sys_tee, fdin, fdout, len, flags);
 }
 
 static inline int vmsplice(int fd, const struct iovec *iov,
                           unsigned long nr_segs, unsigned int flags)
 {
-       return sys_vmsplice(fd, iov, nr_segs, flags);
+       return syscall(__NR_sys_vmsplice, fd, iov, nr_segs, flags);
 }
+#endif
 
-#define SPLICE_F_MOVE  (0x01)  /* move pages instead of copying */
-#define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */
-                                /* we may still block on the fd we splice */
-                                /* from/to, of course */
-#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)
+
+#ifdef FIO_HAVE_SYSLET
+/*
+ * syslet stuff
+ */
+static inline long async_register(void *uah, unsigned int len)
+{
+       return syscall(__NR_async_register, uah, len);
+}
+
+static inline void *async_exec(void *data)
+{
+       return (void *) syscall(__NR_async_exec, data);
+}
+
+static inline long async_wait(unsigned long min_events)
+{
+       return syscall(__NR_async_wait, min_events);
+}
+
+static inline long async_unregister(void *uah, unsigned int len)
+{
+       return syscall(__NR_async_unregister, uah, len);
+}
+
+static inline long umem_add(unsigned long *uptr, unsigned long inc)
+{
+       return syscall(__NR_umem_add, uptr, inc);
+}
+#endif /* FIO_HAVE_SYSLET */
 
 enum {
        IOPRIO_WHO_PROCESS = 1,
@@ -74,6 +122,18 @@ enum {
 #define BLKGETSIZE64   _IOR(0x12,114,size_t)
 #endif
 
+#ifndef BLKFLSBUF
+#define BLKFLSBUF      _IO(0x12,97)
+#endif
+
+static inline int blockdev_invalidate_cache(int fd)
+{
+       if (!ioctl(fd, BLKFLSBUF))
+               return 0;
+
+       return errno;
+}
+
 static inline int blockdev_size(int fd, unsigned long long *bytes)
 {
        if (!ioctl(fd, BLKGETSIZE64, bytes))
@@ -82,4 +142,37 @@ 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