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>

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-ip22:
  Convert SGI IP22 and specific drivers to platform_device.

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (28 commits)
  [MIPS] Rework cobalt_board_id
  [MIPS] Use RTC_CMOS for Cobalt
  [MIPS] Use platform_device for Cobalt UART
  [MIPS] Separate Alchemy processor based boards config
  [MIPS] Fix build error in atomic64_cmpxchg
  [MIPS] Run checksyscalls for N32 and O32 ABI
  [MIPS] tlbex: use __maybe_unused
  [MIPS] excite: use __maybe_unused
  [MIPS] Add extern cobalt_board_id
  [MIPS] Remove unused CONFIG_TOSHIBA_BOARDS
  [MIPS] Rename tb0229_defconfig to tb0219_defconfig
  [MIPS] Update tb0229_defconfig; add CONFIG_GPIO_TB0219.
  [MIPS] Add minimum defconfig for RBHMA4200
  [MIPS] SB1: Build fix.
  [MIPS] Drop __devinit tag from allocate_irqno() and free_irqno()
  [MIPS] clocksource: use CLOCKSOURCE_MASK() macro
  [MIPS] Remove LIMITED_DMA support
  [MIPS] Remove Momenco Jaguar ATX support
  [MIPS] Remove Momenco Ocelot G support
  [MIPS] FPU hazard handling
  ...

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

These files are almost all the same.

This patch could be made even simpler if we don't mind POLLREMOVE turning
up in a few architectures that didn't have it previously (which should be
OK as POLLREMOVE is not used anywhere in the current tree).

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

This code was needed only by Jaguar ATX.

Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

It has some hackish code and it odd DMA results in the need to support
old features in kernel code.

Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>