Move the userspace interface described in
Documentation/block/ioprio.txt from include/linux/ioprio.h to
include/uapi/linux/ioprio.h.
Signed-off-by: Colin Cross <ccr...@android.com>
---
include/linux/ioprio.h | 42 +----------------------------------------
include/uapi/linux/ioprio.h | 46 +++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 47 insertions(+), 41 deletions(-)
create mode 100644 include/uapi/linux/ioprio.h
diff --git a/include/linux/ioprio.h b/include/linux/ioprio.h
index beb9ce1c2c23..45e19bafae6a 100644
--- a/include/linux/ioprio.h
+++ b/include/linux/ioprio.h
@@ -4,47 +4,7 @@
#include <linux/sched.h>
#include <linux/iocontext.h>
-/*
- * Gives us 8 prio classes with 13-bits of data for each class
- */
-#define IOPRIO_BITS (16)
-#define IOPRIO_CLASS_SHIFT (13)
-#define IOPRIO_PRIO_MASK ((1UL << IOPRIO_CLASS_SHIFT) - 1)
-
-#define IOPRIO_PRIO_CLASS(mask) ((mask) >> IOPRIO_CLASS_SHIFT)
-#define IOPRIO_PRIO_DATA(mask) ((mask) & IOPRIO_PRIO_MASK)
-#define IOPRIO_PRIO_VALUE(class, data) (((class) << IOPRIO_CLASS_SHIFT) | data)
-
-#define ioprio_valid(mask) (IOPRIO_PRIO_CLASS((mask)) != IOPRIO_CLASS_NONE)
-
-/*
- * These are the io priority groups as implemented by CFQ. RT is the realtime
- * class, it always gets premium service. BE is the best-effort scheduling
- * class, the default for any process. IDLE is the idle scheduling class, it
- * is only served when no one else is using the disk.
- */
-enum {
- IOPRIO_CLASS_NONE,
- IOPRIO_CLASS_RT,
- IOPRIO_CLASS_BE,
- IOPRIO_CLASS_IDLE,
-};
-
-/*
- * 8 best effort priority levels are supported
- */
-#define IOPRIO_BE_NR (8)
-
-enum {
- IOPRIO_WHO_PROCESS = 1,
- IOPRIO_WHO_PGRP,
- IOPRIO_WHO_USER,
-};
-
-/*
- * Fallback BE priority
- */
-#define IOPRIO_NORM (4)
+#include <uapi/linux/ioprio.h>
/*
* if process has set io priority explicitly, use that. if not, convert
diff --git a/include/uapi/linux/ioprio.h b/include/uapi/linux/ioprio.h
new file mode 100644
index 000000000000..2ee40e2881b8
--- /dev/null
+++ b/include/uapi/linux/ioprio.h
@@ -0,0 +1,46 @@
+#ifndef _UAPI_LINUX_IOPRIO_H
+#define _UAPI_LINUX_IOPRIO_H
+
+/*
+ * Gives us 8 prio classes with 13-bits of data for each class
+ */
+#define IOPRIO_BITS (16)
+#define IOPRIO_CLASS_SHIFT (13)
+#define IOPRIO_PRIO_MASK ((1UL << IOPRIO_CLASS_SHIFT) - 1)
+
+#define IOPRIO_PRIO_CLASS(mask) ((mask) >> IOPRIO_CLASS_SHIFT)
+#define IOPRIO_PRIO_DATA(mask) ((mask) & IOPRIO_PRIO_MASK)
+#define IOPRIO_PRIO_VALUE(class, data) (((class) << IOPRIO_CLASS_SHIFT) | data)
+
+#define ioprio_valid(mask) (IOPRIO_PRIO_CLASS((mask)) != IOPRIO_CLASS_NONE)
+
+/*
+ * These are the io priority groups as implemented by CFQ. RT is the realtime
+ * class, it always gets premium service. BE is the best-effort scheduling
+ * class, the default for any process. IDLE is the idle scheduling class, it
+ * is only served when no one else is using the disk.
+ */
+enum {
+ IOPRIO_CLASS_NONE,
+ IOPRIO_CLASS_RT,
+ IOPRIO_CLASS_BE,
+ IOPRIO_CLASS_IDLE,
+};
+
+/*
+ * 8 best effort priority levels are supported
+ */
+#define IOPRIO_BE_NR (8)
+
+enum {
+ IOPRIO_WHO_PROCESS = 1,
+ IOPRIO_WHO_PGRP,
+ IOPRIO_WHO_USER,
+};
+
+/*
+ * Fallback BE priority
+ */
+#define IOPRIO_NORM (4)
+
+#endif /* _UAPI_LINUX_IOPRIO_H */
--
1.8.5.1
--
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