Detach sched.h from mm.h
First thing mm.h does is including sched.h solely for can_do_mlock() inline
function which has "current" dereference inside. By dealing with can_do_mlock()
mm.h can be detached from sched.h which is good. See below, why.
This patch
a) removes unconditional inclusion of sched.h from mm.h
b) makes can_do_mlock() normal function in mm/mlock.c
c) exports can_do_mlock() to not break compilation
d) adds sched.h inclusions back to files that were getting it indirectly.
e) adds less bloated headers to some files (asm/signal.h, jiffies.h) that were
getting them indirectly
Net result is:
a) mm.h users would get less code to open, read, preprocess, parse, ... if
they don't need sched.h
b) sched.h stops being dependency for significant number of files:
on x86_64 allmodconfig touching sched.h results in recompile of 4083 files,
after patch it's only 3744 (-8.3%).
Cross-compile tested on
all arm defconfigs, all mips defconfigs, all powerpc defconfigs,
alpha alpha-up
arm
i386 i386-up i386-defconfig i386-allnoconfig
ia64 ia64-up
m68k
mips
parisc parisc-up
powerpc powerpc-up
s390 s390-up
sparc sparc-up
sparc64 sparc64-up
um-x86_64
x86_64 x86_64-up x86_64-defconfig x86_64-allnoconfig
as well as my two usual configs.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/arch/arm/mach-iop13xx/pci.c b/arch/arm/mach-iop13xx/pci.c
index 1c9e94c..6baeb26c 100644
--- a/arch/arm/mach-iop13xx/pci.c
+++ b/arch/arm/mach-iop13xx/pci.c
@@ -19,10 +19,11 @@
#include <linux/pci.h>
#include <linux/delay.h>
-
+#include <linux/jiffies.h>
#include <asm/irq.h>
#include <asm/hardware.h>
#include <asm/sizes.h>
+#include <asm/signal.h>
#include <asm/mach/pci.h>
#include <asm/arch/pci.h>
diff --git a/arch/arm/mm/mmap.c b/arch/arm/mm/mmap.c
index 2c4c242..2728b0e 100644
--- a/arch/arm/mm/mmap.c
+++ b/arch/arm/mm/mmap.c
@@ -5,7 +5,7 @@
#include <linux/mm.h>
#include <linux/mman.h>
#include <linux/shm.h>
-
+#include <linux/sched.h>
#include <asm/system.h>
#define COLOUR_ALIGN(addr,pgoff) \
diff --git a/arch/arm/plat-iop/pci.c b/arch/arm/plat-iop/pci.c
index e2744b7..7bf4229 100644
--- a/arch/arm/plat-iop/pci.c
+++ b/arch/arm/plat-iop/pci.c
@@ -19,6 +19,7 @@
#include <linux/ioport.h>
#include <asm/io.h>
#include <asm/irq.h>
+#include <asm/signal.h>
#include <asm/system.h>
#include <asm/hardware.h>
#include <asm/mach/pci.h>
diff --git a/arch/i386/kernel/cpu/cpufreq/speedstep-ich.c b/arch/i386/kernel/cpu/cpufreq/speedstep-ich.c
index b425cd3d1..698f980 100644
--- a/arch/i386/kernel/cpu/cpufreq/speedstep-ich.c
+++ b/arch/i386/kernel/cpu/cpufreq/speedstep-ich.c
@@ -24,6 +24,7 @@
#include <linux/cpufreq.h>
#include <linux/pci.h>
#include <linux/slab.h>
+#include <linux/sched.h>
#include "speedstep-lib.h"
diff --git a/arch/i386/kernel/cpu/cyrix.c b/arch/i386/kernel/cpu/cyrix.c
index 0b8411a..e88d2fb 100644
--- a/arch/i386/kernel/cpu/cyrix.c
+++ b/arch/i386/kernel/cpu/cyrix.c
@@ -7,6 +7,7 @@
#include <asm/processor.h>
#include <asm/timer.h>
#include <asm/pci-direct.h>
+#include <asm/tsc.h>
#include "cpu.h"
diff --git a/arch/i386/mm/mmap.c b/arch/i386/mm/mmap.c
index e4730a1..552e084 100644
--- a/arch/i386/mm/mmap.c
+++ b/arch/i386/mm/mmap.c
@@ -27,6 +27,7 @@
#include <linux/personality.h>
#include <linux/mm.h>
#include <linux/random.h>
+#include <linux/sched.h>
/*
* Top of mmap area (just below the process stack).
diff --git a/arch/mips/kernel/unaligned.c b/arch/mips/kernel/unaligned.c
index a7d49ae..18c4a3c4 100644
--- a/arch/mips/kernel/unaligned.c
+++ b/arch/mips/kernel/unaligned.c
@@ -76,7 +76,7 @@
#include <linux/module.h>
#include <linux/signal.h>
#include <linux/smp.h>
-
+#include <linux/sched.h>
#include <asm/asm.h>
#include <asm/branch.h>
#include <asm/byteorder.h>
diff --git a/arch/mips/mm/ioremap.c b/arch/mips/mm/ioremap.c
index cea7d0e..59945b9 100644
--- a/arch/mips/mm/ioremap.c
+++ b/arch/mips/mm/ioremap.c
@@ -9,7 +9,7 @@
#include <linux/module.h>
#include <asm/addrspace.h>
#include <asm/byteorder.h>
-
+#include <linux/sched.h>
#include <linux/vmalloc.h>
#include <asm/cacheflush.h>
#include <asm/io.h>
diff --git a/arch/parisc/kernel/cache.c b/arch/parisc/kernel/cache.c
index 0dc924cc..395bbce 100644
--- a/arch/parisc/kernel/cache.c
+++ b/arch/parisc/kernel/cache.c
@@ -18,7 +18,7 @@
#include <linux/module.h>
#include <linux/seq_file.h>
#include <linux/pagemap.h>
-
+#include <linux/sched.h>
#include <asm/pdc.h>
#include <asm/cache.h>
#include <asm/cacheflush.h>
diff --git a/arch/parisc/kernel/processor.c b/arch/parisc/kernel/processor.c
index dd5d0cb..566226d 100644
--- a/arch/parisc/kernel/processor.c
+++ b/arch/parisc/kernel/processor.c
@@ -33,7 +33,7 @@
#include <linux/seq_file.h>
#include <linux/slab.h>
#include <linux/cpu.h>
-
+#include <asm/param.h>
#include <asm/cache.h>
#include <asm/hardware.h> /* for register_parisc_driver() stuff */
#include <asm/processor.h>
diff --git a/arch/powerpc/mm/mmap.c b/arch/powerpc/mm/mmap.c
index 972a8e8..86010fc 100644
--- a/arch/powerpc/mm/mmap.c
+++ b/arch/powerpc/mm/mmap.c
@@ -24,6 +24,7 @@
#include <linux/personality.h>
#include <linux/mm.h>
+#include <linux/sched.h>
/*
* Top of mmap area (just below the process stack).
diff --git a/arch/x86_64/ia32/mmap32.c b/arch/x86_64/ia32/mmap32.c
index 079f413..e4b84b4 100644
--- a/arch/x86_64/ia32/mmap32.c
+++ b/arch/x86_64/ia32/mmap32.c
@@ -29,6 +29,7 @@
#include <linux/personality.h>
#include <linux/mm.h>
#include <linux/random.h>
+#include <linux/sched.h>
/*
* Top of mmap area (just below the process stack).
diff --git a/arch/x86_64/kernel/reboot.c b/arch/x86_64/kernel/reboot.c
index c116b54..7503068 100644
--- a/arch/x86_64/kernel/reboot.c
+++ b/arch/x86_64/kernel/reboot.c
@@ -8,6 +8,7 @@
#include <linux/string.h>
#include <linux/pm.h>
#include <linux/kdebug.h>
+#include <linux/sched.h>
#include <asm/io.h>
#include <asm/delay.h>
#include <asm/hw_irq.h>
