Split off diskutil include
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/diskutil.h b/diskutil.h
new file mode 100644
index 0000000..35fd0a5
--- /dev/null
+++ b/diskutil.h
@@ -0,0 +1,83 @@
+#ifndef FIO_DISKUTIL_H
+#define FIO_DISKUTIL_H
+
+/*
+ * Disk utils as read in /sys/block/<dev>/stat
+ */
+struct disk_util_stat {
+ unsigned ios[2];
+ unsigned merges[2];
+ unsigned long long sectors[2];
+ unsigned ticks[2];
+ unsigned io_ticks;
+ unsigned time_in_queue;
+};
+
+/*
+ * Per-device disk util management
+ */
+struct disk_util {
+ struct flist_head list;
+ /* If this disk is a slave, hook it into the master's
+ * list using this head.
+ */
+ struct flist_head slavelist;
+
+ char *name;
+ char *sysfs_root;
+ char path[256];
+ int major, minor;
+
+ struct disk_util_stat dus;
+ struct disk_util_stat last_dus;
+
+ /* For software raids, this entry maintains pointers to the
+ * entries for the slave devices. The disk_util entries for
+ * the slaves devices should primarily be maintained through
+ * the disk_list list, i.e. for memory allocation and
+ * de-allocation, etc. Whereas this list should be used only
+ * for aggregating a software RAID's disk util figures.
+ */
+ struct flist_head slaves;
+
+ unsigned long msec;
+ struct timeval time;
+
+ struct fio_mutex *lock;
+ unsigned long users;
+};
+
+static inline void disk_util_inc(struct disk_util *du)
+{
+ if (du) {
+ fio_mutex_down(du->lock);
+ du->users++;
+ fio_mutex_up(du->lock);
+ }
+}
+
+static inline void disk_util_dec(struct disk_util *du)
+{
+ if (du) {
+ fio_mutex_down(du->lock);
+ du->users--;
+ fio_mutex_up(du->lock);
+ }
+}
+
+#define DISK_UTIL_MSEC (250)
+
+/*
+ * disk util stuff
+ */
+#ifdef FIO_HAVE_DISK_UTIL
+extern void show_disk_util(void);
+extern void init_disk_util(struct thread_data *);
+extern void update_io_ticks(void);
+#else
+#define show_disk_util()
+#define init_disk_util(td)
+#define update_io_ticks()
+#endif
+
+#endif