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Subject[tip:sched/core] sched: Move the priority specific bits into a new header file
Commit-ID:  5c228079ce8a9bb043a423069a6674dfb9268037
Gitweb: http://git.kernel.org/tip/5c228079ce8a9bb043a423069a6674dfb9268037
Author: Dongsheng Yang <yangds.fnst@cn.fujitsu.com>
AuthorDate: Mon, 27 Jan 2014 17:15:37 -0500
Committer: Ingo Molnar <mingo@kernel.org>
CommitDate: Sun, 9 Feb 2014 13:31:49 +0100

sched: Move the priority specific bits into a new header file

Some bits about priority are defined in linux/sched/rt.h, but
some of them are not only for rt scheduler, such as MAX_PRIO.

This patch move them all into a new header file, linux/sched/prio.h.

Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com>
Cc: clark.williams@gmail.com
Cc: rostedt@goodmis.org
Cc: raistlin@linux.it
Cc: juri.lelli@gmail.com
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/f7549508a1588da2c613d601748ca9de30fa5dcf.1390859827.git.yangds.fnst@cn.fujitsu.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
include/linux/sched.h | 2 ++
include/linux/sched/prio.h | 23 +++++++++++++++++++++++
include/linux/sched/rt.h | 19 +------------------
3 files changed, 26 insertions(+), 18 deletions(-)

diff --git a/include/linux/sched.h b/include/linux/sched.h
index ed86779..d97d0a8 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -3,6 +3,8 @@

#include <uapi/linux/sched.h>

+#include <linux/sched/prio.h>
+

struct sched_param {
int sched_priority;
diff --git a/include/linux/sched/prio.h b/include/linux/sched/prio.h
new file mode 100644
index 0000000..9382ba8
--- /dev/null
+++ b/include/linux/sched/prio.h
@@ -0,0 +1,23 @@
+#ifndef _SCHED_PRIO_H
+#define _SCHED_PRIO_H
+
+/*
+ * Priority of a process goes from 0..MAX_PRIO-1, valid RT
+ * priority is 0..MAX_RT_PRIO-1, and SCHED_NORMAL/SCHED_BATCH
+ * tasks are in the range MAX_RT_PRIO..MAX_PRIO-1. Priority
+ * values are inverted: lower p->prio value means higher priority.
+ *
+ * The MAX_USER_RT_PRIO value allows the actual maximum
+ * RT priority to be separate from the value exported to
+ * user-space. This allows kernel threads to set their
+ * priority to a value higher than any user task. Note:
+ * MAX_RT_PRIO must not be smaller than MAX_USER_RT_PRIO.
+ */
+
+#define MAX_USER_RT_PRIO 100
+#define MAX_RT_PRIO MAX_USER_RT_PRIO
+
+#define MAX_PRIO (MAX_RT_PRIO + 40)
+#define DEFAULT_PRIO (MAX_RT_PRIO + 20)
+
+#endif /* _SCHED_PRIO_H */
diff --git a/include/linux/sched/rt.h b/include/linux/sched/rt.h
index 34e4ebe..f7453d4 100644
--- a/include/linux/sched/rt.h
+++ b/include/linux/sched/rt.h
@@ -1,24 +1,7 @@
#ifndef _SCHED_RT_H
#define _SCHED_RT_H

-/*
- * Priority of a process goes from 0..MAX_PRIO-1, valid RT
- * priority is 0..MAX_RT_PRIO-1, and SCHED_NORMAL/SCHED_BATCH
- * tasks are in the range MAX_RT_PRIO..MAX_PRIO-1. Priority
- * values are inverted: lower p->prio value means higher priority.
- *
- * The MAX_USER_RT_PRIO value allows the actual maximum
- * RT priority to be separate from the value exported to
- * user-space. This allows kernel threads to set their
- * priority to a value higher than any user task. Note:
- * MAX_RT_PRIO must not be smaller than MAX_USER_RT_PRIO.
- */
-
-#define MAX_USER_RT_PRIO 100
-#define MAX_RT_PRIO MAX_USER_RT_PRIO
-
-#define MAX_PRIO (MAX_RT_PRIO + 40)
-#define DEFAULT_PRIO (MAX_RT_PRIO + 20)
+#include <linux/sched/prio.h>

static inline int rt_prio(int prio)
{

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