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| author | Alexey Dobriyan <adobriyan@gmail.com> | 2007-05-21 01:22:52 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-21 09:18:19 -0700 |
| commit | e8edc6e03a5c8562dc70a6d969f732bdb355a7e7 (patch) | |
| tree | fc86c863655128a7041dfe613d14393d761fa7b9 /arch/x86_64 | |
| parent | ff1be9ad61e3e17ba83702d8ed0b534e5b8ee15c (diff) | |
| download | op-kernel-dev-e8edc6e03a5c8562dc70a6d969f732bdb355a7e7.zip op-kernel-dev-e8edc6e03a5c8562dc70a6d969f732bdb355a7e7.tar.gz | |
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>
Diffstat (limited to 'arch/x86_64')
| -rw-r--r-- | arch/x86_64/ia32/mmap32.c | 1 | ||||
| -rw-r--r-- | arch/x86_64/kernel/reboot.c | 1 |
2 files changed, 2 insertions, 0 deletions
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> |
