[PATCH 13/89] sched/loadavg: Move loadavg related definitions from <linux/sched.h> to <linux/sched/loadavg.h>

[Ingo Molnar <mingo@kernel.org>]

Create a new header for these bits, to reduce the size and complexity of <linux/sched.h>.

Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
 arch/m68k/kernel/time.c                         |  1 +
 arch/microblaze/kernel/heartbeat.c              |  1 +
 arch/powerpc/platforms/cell/cpufreq_spudemand.c |  1 +
 arch/powerpc/platforms/cell/spufs/sched.c       |  1 +
 arch/s390/appldata/appldata_os.c                |  1 +
 arch/sh/drivers/heartbeat.c                     |  1 +
 arch/sparc/kernel/led.c                         |  1 +
 drivers/cpuidle/governors/menu.c                |  1 +
 drivers/leds/trigger/ledtrig-heartbeat.c        |  1 +
 drivers/platform/x86/intel_ips.c                |  1 +
 fs/proc/loadavg.c                               |  1 +
 include/linux/sched.h                           | 27 ---------------------------
 include/linux/sched/loadavg.h                   | 31 +++++++++++++++++++++++++++++++
 kernel/debug/kdb/kdb_main.c                     |  1 +
 kernel/sched/core.c                             |  2 +-
 kernel/sched/loadavg.c                          |  1 +
 kernel/sys.c                                    |  1 +
 kernel/time/timekeeping.c                       |  1 +
 net/sched/em_meta.c                             |  1 +
 19 files changed, 48 insertions(+), 28 deletions(-)

diff --git a/arch/m68k/kernel/time.c b/arch/m68k/kernel/time.c
index 4e5aa2f4f522..87160b4415fb 100644
--- a/arch/m68k/kernel/time.c
+++ b/arch/m68k/kernel/time.c
@@ -14,6 +14,7 @@
 #include <linux/export.h>
 #include <linux/module.h>
 #include <linux/sched.h>
+#include <linux/sched/loadavg.h>
 #include <linux/kernel.h>
 #include <linux/param.h>
 #include <linux/string.h>
diff --git a/arch/microblaze/kernel/heartbeat.c b/arch/microblaze/kernel/heartbeat.c
index 4643e3ab9414..2022130139d2 100644
--- a/arch/microblaze/kernel/heartbeat.c
+++ b/arch/microblaze/kernel/heartbeat.c
@@ -9,6 +9,7 @@
  */
 
 #include <linux/sched.h>
+#include <linux/sched/loadavg.h>
 #include <linux/io.h>
 
 #include <asm/setup.h>
diff --git a/arch/powerpc/platforms/cell/cpufreq_spudemand.c b/arch/powerpc/platforms/cell/cpufreq_spudemand.c
index 88301e53f085..882944c36ef5 100644
--- a/arch/powerpc/platforms/cell/cpufreq_spudemand.c
+++ b/arch/powerpc/platforms/cell/cpufreq_spudemand.c
@@ -22,6 +22,7 @@
 
 #include <linux/cpufreq.h>
 #include <linux/sched.h>
+#include <linux/sched/loadavg.h>
 #include <linux/module.h>
 #include <linux/timer.h>
 #include <linux/workqueue.h>
diff --git a/arch/powerpc/platforms/cell/spufs/sched.c b/arch/powerpc/platforms/cell/spufs/sched.c
index 460f5f31d5cb..c4cd6eb25b69 100644
--- a/arch/powerpc/platforms/cell/spufs/sched.c
+++ b/arch/powerpc/platforms/cell/spufs/sched.c
@@ -24,6 +24,7 @@
 
 #include <linux/errno.h>
 #include <linux/sched.h>
+#include <linux/sched/loadavg.h>
 #include <linux/sched/rt.h>
 #include <linux/kernel.h>
 #include <linux/mm.h>
diff --git a/arch/s390/appldata/appldata_os.c b/arch/s390/appldata/appldata_os.c
index 08b9e942a262..079446619f89 100644
--- a/arch/s390/appldata/appldata_os.c
+++ b/arch/s390/appldata/appldata_os.c
@@ -17,6 +17,7 @@
 #include <linux/kernel_stat.h>
 #include <linux/netdevice.h>
 #include <linux/sched.h>
+#include <linux/sched/loadavg.h>
 #include <asm/appldata.h>
 #include <asm/smp.h>
 
diff --git a/arch/sh/drivers/heartbeat.c b/arch/sh/drivers/heartbeat.c
index 49bace446a1a..c6d96049a0bb 100644
--- a/arch/sh/drivers/heartbeat.c
+++ b/arch/sh/drivers/heartbeat.c
@@ -21,6 +21,7 @@
 #include <linux/init.h>
 #include <linux/platform_device.h>
 #include <linux/sched.h>
+#include <linux/sched/loadavg.h>
 #include <linux/timer.h>
 #include <linux/io.h>
 #include <linux/slab.h>
diff --git a/arch/sparc/kernel/led.c b/arch/sparc/kernel/led.c
index 3ae36f36e758..44a3ed93c214 100644
--- a/arch/sparc/kernel/led.c
+++ b/arch/sparc/kernel/led.c
@@ -8,6 +8,7 @@
 #include <linux/jiffies.h>
 #include <linux/timer.h>
 #include <linux/uaccess.h>
+#include <linux/sched/loadavg.h>
 
 #include <asm/auxio.h>
 
diff --git a/drivers/cpuidle/governors/menu.c b/drivers/cpuidle/governors/menu.c
index d9b5b9398a0f..63d3bde4fac6 100644
--- a/drivers/cpuidle/governors/menu.c
+++ b/drivers/cpuidle/governors/menu.c
@@ -18,6 +18,7 @@
 #include <linux/hrtimer.h>
 #include <linux/tick.h>
 #include <linux/sched.h>
+#include <linux/sched/loadavg.h>
 #include <linux/math64.h>
 
 /*
diff --git a/drivers/leds/trigger/ledtrig-heartbeat.c b/drivers/leds/trigger/ledtrig-heartbeat.c
index c9f386213e9e..05351296e634 100644
--- a/drivers/leds/trigger/ledtrig-heartbeat.c
+++ b/drivers/leds/trigger/ledtrig-heartbeat.c
@@ -17,6 +17,7 @@
 #include <linux/slab.h>
 #include <linux/timer.h>
 #include <linux/sched.h>
+#include <linux/sched/loadavg.h>
 #include <linux/leds.h>
 #include <linux/reboot.h>
 #include <linux/suspend.h>
diff --git a/drivers/platform/x86/intel_ips.c b/drivers/platform/x86/intel_ips.c
index 55663b3d7282..58dcee562d64 100644
--- a/drivers/platform/x86/intel_ips.c
+++ b/drivers/platform/x86/intel_ips.c
@@ -68,6 +68,7 @@
 #include <linux/module.h>
 #include <linux/pci.h>
 #include <linux/sched.h>
+#include <linux/sched/loadavg.h>
 #include <linux/seq_file.h>
 #include <linux/string.h>
 #include <linux/tick.h>
diff --git a/fs/proc/loadavg.c b/fs/proc/loadavg.c
index aec66e6c2060..add5255ce7e0 100644
--- a/fs/proc/loadavg.c
+++ b/fs/proc/loadavg.c
@@ -3,6 +3,7 @@
 #include <linux/pid_namespace.h>
 #include <linux/proc_fs.h>
 #include <linux/sched.h>
+#include <linux/sched/loadavg.h>
 #include <linux/seq_file.h>
 #include <linux/seqlock.h>
 #include <linux/time.h>
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 6b5efdc4dee3..c5c10a7ddbf1 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -72,31 +72,6 @@ struct nameidata;
 #define VMACACHE_SIZE (1U << VMACACHE_BITS)
 #define VMACACHE_MASK (VMACACHE_SIZE - 1)
 
-/*
- * These are the constant used to fake the fixed-point load-average
- * counting. Some notes:
- *  - 11 bit fractions expand to 22 bits by the multiplies: this gives
- *    a load-average precision of 10 bits integer + 11 bits fractional
- *  - if you want to count load-averages more often, you need more
- *    precision, or rounding will get you. With 2-second counting freq,
- *    the EXP_n values would be 1981, 2034 and 2043 if still using only
- *    11 bit fractions.
- */
-extern unsigned long avenrun[];		/* Load averages */
-extern void get_avenrun(unsigned long *loads, unsigned long offset, int shift);
-
-#define FSHIFT		11		/* nr of bits of precision */
-#define FIXED_1		(1<<FSHIFT)	/* 1.0 as fixed-point */
-#define LOAD_FREQ	(5*HZ+1)	/* 5 sec intervals */
-#define EXP_1		1884		/* 1/exp(5sec/1min) as fixed-point */
-#define EXP_5		2014		/* 1/exp(5sec/5min) */
-#define EXP_15		2037		/* 1/exp(5sec/15min) */
-
-#define CALC_LOAD(load,exp,n) \
-	load *= exp; \
-	load += n*(FIXED_1-exp); \
-	load >>= FSHIFT;
-
 extern unsigned long total_forks;
 extern int nr_threads;
 DECLARE_PER_CPU(unsigned long, process_counts);
@@ -107,8 +82,6 @@ extern unsigned long nr_iowait(void);
 extern unsigned long nr_iowait_cpu(int cpu);
 extern void get_iowait_load(unsigned long *nr_waiters, unsigned long *load);
 
-extern void calc_global_load(unsigned long ticks);
-
 #if defined(CONFIG_SMP) && defined(CONFIG_NO_HZ_COMMON)
 extern void cpu_load_update_nohz_start(void);
 extern void cpu_load_update_nohz_stop(void);
diff --git a/include/linux/sched/loadavg.h b/include/linux/sched/loadavg.h
new file mode 100644
index 000000000000..4264bc6b2c27
--- /dev/null
+++ b/include/linux/sched/loadavg.h
@@ -0,0 +1,31 @@
+#ifndef _LINUX_SCHED_LOADAVG_H
+#define _LINUX_SCHED_LOADAVG_H
+
+/*
+ * These are the constant used to fake the fixed-point load-average
+ * counting. Some notes:
+ *  - 11 bit fractions expand to 22 bits by the multiplies: this gives
+ *    a load-average precision of 10 bits integer + 11 bits fractional
+ *  - if you want to count load-averages more often, you need more
+ *    precision, or rounding will get you. With 2-second counting freq,
+ *    the EXP_n values would be 1981, 2034 and 2043 if still using only
+ *    11 bit fractions.
+ */
+extern unsigned long avenrun[];		/* Load averages */
+extern void get_avenrun(unsigned long *loads, unsigned long offset, int shift);
+
+#define FSHIFT		11		/* nr of bits of precision */
+#define FIXED_1		(1<<FSHIFT)	/* 1.0 as fixed-point */
+#define LOAD_FREQ	(5*HZ+1)	/* 5 sec intervals */
+#define EXP_1		1884		/* 1/exp(5sec/1min) as fixed-point */
+#define EXP_5		2014		/* 1/exp(5sec/5min) */
+#define EXP_15		2037		/* 1/exp(5sec/15min) */
+
+#define CALC_LOAD(load,exp,n) \
+	load *= exp; \
+	load += n*(FIXED_1-exp); \
+	load >>= FSHIFT;
+
+extern void calc_global_load(unsigned long ticks);
+
+#endif /* _LINUX_SCHED_LOADAVG_H */
diff --git a/kernel/debug/kdb/kdb_main.c b/kernel/debug/kdb/kdb_main.c
index ca183919d302..308937c7a687 100644
--- a/kernel/debug/kdb/kdb_main.c
+++ b/kernel/debug/kdb/kdb_main.c
@@ -18,6 +18,7 @@
 #include <linux/kmsg_dump.h>
 #include <linux/reboot.h>
 #include <linux/sched.h>
+#include <linux/sched/loadavg.h>
 #include <linux/sysrq.h>
 #include <linux/smp.h>
 #include <linux/utsname.h>
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 548d1ffabc79..568e773c528f 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -9,7 +9,7 @@
 
 #include <linux/sched.h>
 #include <linux/sched/clock.h>
-#include <uapi/linux/sched/types.h>
+#include <linux/sched/loadavg.h>
 #include <linux/cpuset.h>
 #include <linux/delayacct.h>
 #include <linux/init_task.h>
diff --git a/kernel/sched/loadavg.c b/kernel/sched/loadavg.c
index a2d6eb71f06b..7296b7308eca 100644
--- a/kernel/sched/loadavg.c
+++ b/kernel/sched/loadavg.c
@@ -7,6 +7,7 @@
  */
 
 #include <linux/export.h>
+#include <linux/sched/loadavg.h>
 
 #include "sched.h"
 
diff --git a/kernel/sys.c b/kernel/sys.c
index 7d4a9a6df956..47151c604f0a 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -49,6 +49,7 @@
 #include <linux/binfmts.h>
 
 #include <linux/sched.h>
+#include <linux/sched/loadavg.h>
 #include <linux/rcupdate.h>
 #include <linux/uidgid.h>
 #include <linux/cred.h>
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index 95b258dd75db..fb564acee0f3 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -15,6 +15,7 @@
 #include <linux/init.h>
 #include <linux/mm.h>
 #include <linux/sched.h>
+#include <linux/sched/loadavg.h>
 #include <linux/syscore_ops.h>
 #include <linux/clocksource.h>
 #include <linux/jiffies.h>
diff --git a/net/sched/em_meta.c b/net/sched/em_meta.c
index 41c80b6c3906..ae7e4f5b348b 100644
--- a/net/sched/em_meta.c
+++ b/net/sched/em_meta.c
@@ -63,6 +63,7 @@
 #include <linux/types.h>
 #include <linux/kernel.h>
 #include <linux/sched.h>
+#include <linux/sched/loadavg.h>
 #include <linux/string.h>
 #include <linux/skbuff.h>
 #include <linux/random.h>
-- 
2.7.4