The only function of memblock_analyze() is now allowing resize of
memblock region arrays.  Rename it to memblock_allow_resize() and
update its users.

* The following users remain the same other than renaming.

  arm/mm/init.c::arm_memblock_init()
  microblaze/kernel/prom.c::early_init_devtree()
  powerpc/kernel/prom.c::early_init_devtree()
  openrisc/kernel/prom.c::early_init_devtree()
  sh/mm/init.c::paging_init()
  sparc/mm/init_64.c::paging_init()
  unicore32/mm/init.c::uc32_memblock_init()

* In the following users, analyze was used to update total size which
  is no longer necessary.

  powerpc/kernel/machine_kexec.c::reserve_crashkernel()
  powerpc/kernel/prom.c::early_init_devtree()
  powerpc/mm/init_32.c::MMU_init()
  powerpc/mm/tlb_nohash.c::__early_init_mmu()  
  powerpc/platforms/ps3/mm.c::ps3_mm_add_memory()
  powerpc/platforms/embedded6xx/wii.c::wii_memory_fixups()
  sh/kernel/machine_kexec.c::reserve_crashkernel()

* x86/kernel/e820.c::memblock_x86_fill() was directly setting
  memblock_can_resize before populating memblock and calling analyze
  afterwards.  Call memblock_allow_resize() before start populating.

memblock_can_resize is now static inside memblock.c.
Signed-off-by: NTejun Heo <tj@kernel.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Cc: "H. Peter Anvin" <hpa@zytor.com>

memblock_init() initializes arrays for regions and memblock itself;
however, all these can be done with struct initializers and
memblock_init() can be removed.  This patch kills memblock_init() and
initializes memblock with struct initializer.

The only difference is that the first dummy entries don't have .nid
set to MAX_NUMNODES initially.  This doesn't cause any behavior
difference.
Signed-off-by: NTejun Heo <tj@kernel.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Cc: "H. Peter Anvin" <hpa@zytor.com>

24aa0788 (memblock, x86: Replace memblock_x86_reserve/free_range()
with generic ones) removed arch/x86/include/asm/memblock.h and dropped
its inclusion from include/linux/memblock.h which breaks other
architectures which depended on the generic memblock.h pulling in the
arch specific one.

However, the proper fix isn't adding back the asm inclusion.  memblock
doesn't have any arch dependent part and doesn't need arch specific
header file and asm/memblock.h files are either practically empty or
contain mostly unrelated arch specific stuff.

* In microblaze, sh, powerpc, sparc and openrisc, asm/memblock.h is
  either empty or just contains unused MEMBLOCK_DBG() macro.  Remove
  them.

* In arm and unicore32, asm/memblock.h contains arch specific stuff.
  Include it directly from its users.  It might be a good idea to
  rename the header file to avoid confusion.
Signed-off-by: NTejun Heo <tj@kernel.org>
Reported-by: N"H. Peter Anvin" <hpa@zytor.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>

altroot support has been gone for years, along with arch/*/asm/namei.h;
looks like a dummy survivor that sat it out in microblaze tree...
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

For access to the EXPORT_SYMBOL variants and THIS_MODULE macros.
Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>

As far as I can tell the only reason microblaze has
__ARCH_WANT_INTERRUPTS_ON_CTXSW is because it initializes new task state
with interrupts enabled so that on switch_to() interrupts get enabled.

So change copy_thread() to clear MSR_IE instead of set it, this will
ensure switch_to() will always keep IRQs disabled.

The scheduler will disable IRQs when taking rq->lock in schedule() and
enable IRQs in finish_lock_switch() after its done its magic.

This leaves ARM the only __ARCH_WANT_INTERRUPTS_ON_CTXSW user.
Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: NMichal Simek <monstr@monstr.eu>

Use delay slot to speedup if maxlen is zero.
Signed-off-by: NMichal Simek <monstr@monstr.eu>

Use default value (which is the same) from
include/linux/skbuff.h.
Signed-off-by: NMichal Simek <monstr@monstr.eu>

Add missing __ucmpdi2 helper function.

Error log:
kernel/built-in.o: In function `print_graph_duration':
: undefined reference to `__ucmpdi2'
kernel/built-in.o: In function `print_graph_duration':
: undefined reference to `__ucmpdi2'

Based on MIPS code.
Signed-off-by: NMichal Simek <monstr@monstr.eu>

It fixes the signal nr raised for divizion by zero from
SIGILL to SIGFPE, in accordance to POSIX and other archs.

This came up due to a failed test in the GCC testsuite.
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>

Switch arch code to 189, the registered code in the upstream
version of binutils. Continue to accept the experimental 0xbaab.
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>
Signed-off-by: NMichal Simek <monstr@monstr.eu>

Added support gor dma_direct_sync_single_for_*() and dma_direct_sync_sg_for_*()
Signed-off-by: NEli Billauer <eli.billauer@gmail.com>
Signed-off-by: NMichal Simek <monstr@monstr.eu>

__dma_sync_page() was replaced by __dma_sync(), and parameters of calls to
the new function were adjusted to match __dma_sync()'s format.
Signed-off-by: NEli Billauer <eli.billauer@gmail.com>
Signed-off-by: NMichal Simek <monstr@monstr.eu>

Microblaze v8.20.a has 0x15 version string.
Signed-off-by: NMichal Simek <monstr@monstr.eu>

There is the problem with bit OR (|) because for
some combination is addr | size | addr+size equal
to seq.

For standard kernel setting (kernel starts at 0xC0000000)
is seq for user space 0xBFFFFFFF and everything below
this limit is fine.

But even address 0xBFFFFFFF is fine because it
is below kernel space.
Signed-off-by: NAndrew Fedonczuk <andrew.fedonczuk@ericsson.com>
Signed-off-by: NMichal Simek <monstr@monstr.eu>

Increase performance by loop unrolling.
Signed-off-by: NMichal Simek <monstr@monstr.eu>

Save jump instruction for unaligned byte copying.
Signed-off-by: NMichal Simek <monstr@monstr.eu>

Change label name to be prepared for loop unrolling.
Signed-off-by: NMichal Simek <monstr@monstr.eu>

Move fixups below appropriate code.
Signed-off-by: NMichal Simek <monstr@monstr.eu>

Use label 0: for zero length copying and fixups.
Signed-off-by: NMichal Simek <monstr@monstr.eu>

Top bit is used as garbage and it must be clear
explicitly.
It is causing the problem with soft lookup code
because it checks delays which are long when
top bit is setup.
Signed-off-by: NMichal Simek <monstr@monstr.eu>

Signed-off-by: NPaul Bolle <pebolle@tiscali.nl>
Acked-by: NMichal Simek <monstr@monstr.eu>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

There are numerous broken references to Documentation files (in other
Documentation files, in comments, etc.). These broken references are
caused by typo's in the references, and by renames or removals of the
Documentation files. Some broken references are simply odd.

Fix these broken references, sometimes by dropping the irrelevant text
they were part of.
Signed-off-by: NPaul Bolle <pebolle@tiscali.nl>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

The nfsservctl system call is now gone, so we should remove all
linkage for it.
Signed-off-by: NNeilBrown <neilb@suse.de>
Signed-off-by: NJ. Bruce Fields <bfields@redhat.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

When interrupt controller uses 32 interrupts lines the kernel
show error message about mismatch in kind-of-intr parameter
because it exceeds u32. Recast fixs this issue.
Signed-off-by: NMichal Simek <monstr@monstr.eu>

This allows us to move duplicated code in <asm/atomic.h>
(atomic_inc_not_zero() for now) to <linux/atomic.h>
Signed-off-by: NArun Sharma <asharma@fb.com>
Reviewed-by: NEric Dumazet <eric.dumazet@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: David Miller <davem@davemloft.net>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: NMike Frysinger <vapier@gentoo.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

[ poleg@redhat.com: no need to declare show_regs() in ptrace.h, sched.h does this ]
Signed-off-by: NMike Frysinger <vapier@gentoo.org>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: NOleg Nesterov <oleg@redhat.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

This reverts commit c9d761b7.

Ben' commit "microblaze/pci: Move the remains of pci_32.c to pci-common.c"
(sha1: bf13a6fa)
completely removed pci_32.c that's why my fixing commit caused
the problem with merging and need to be revert.
Signed-off-by: NMichal Simek <monstr@monstr.eu>

Bug introduces in:
powerpc/pci: Make both ppc32 and ppc64 use sysdata for pci_controller
(sha1: b5d937de)
Signed-off-by: NMichal Simek <monstr@monstr.eu>

Support mdm early console:
 - extend time for retries
 - add mdm compatible property
Signed-off-by: NMichal Simek <monstr@monstr.eu>

Recognize early Linux console from chosen - linux,stdout-path
instead of detecting the first console with appropriate
compatible strings.
This patch solved the problem on system with multiple
consoles.
Signed-off-by: NMichal Simek <monstr@monstr.eu>

1. Register early console as standard console
2. Enable CON_BOOT console flag to ensure auto-unregistering by the kernel
3. remap_early_printk function remap physical console baseaddr to virtual space

Usage specific function for console remap is done after memory initialization
with IRQ turn off that's why there is not necessary to protect it.

The reason for remapping is that the kernel use TLB 63 for 1:1 address mapping
to be able to use console in very early boot-up phase. But allocating one TLB
just for console caused performance degression that's why ioremaps create new
mapping and TLB 63 is automatically released and ready to use.
Signed-off-by: NMichal Simek <monstr@monstr.eu>
CC: Russell King <linux@arm.linux.org.uk>
CC: Ralf Baechle <ralf@linux-mips.org>
CC: Ingo Molnar <mingo@redhat.com>
CC: Alan Cox <alan@linux.intel.com>
CC: <linux-serial@vger.kernel.org>
CC: Arnd Bergmann <arnd@arndb.de>

The current cpuinfo output for the cache policy has no leading tag:, making
it difficult to parse.  Add a leaning "Dcache-policy:" tag to this field.
Signed-off-by: NJohn A. Williams <john.williams@petalogix.com>

Add cpuinfo support for the new MicroBlaze option permitting userspace
(unprivileged) access to the streaming instructions (FSL / AXI-stream).

Emit a noisy warning at bootup if this is enabled, because bad user code
can potentially lockup the CPU.
Signed-off-by: NJohn A. Williams <john.williams@petalogix.com>
Signed-off-by: NMichal Simek <monstr@monstr.eu>

descrtiption -> description
Signed-off-by: NMichal Simek <monstr@monstr.eu>

The address limit is already set in flush_old_exec() so this
set_fs(USER_DS) is redundant.
Signed-off-by: NMathias Krause <minipli@googlemail.com>

The prototype for start_thread() is already present in the MMU/NOMMU
independent part of the file. Remove the duplicate.
Signed-off-by: NMathias Krause <minipli@googlemail.com>
Signed-off-by: NMichal Simek <monstr@monstr.eu>

Several registers weren't saved correctly to the stack.

Unaligned expection for system with MMU stores
value in ex_tmp_data_loc_X address which is load to registers r3.
The next step is to move this value from r3 to a destination
register which caused unaligned exception. For several registers
this value was directly moved to the register.

For example for r28:
by "or r28, r0, r3"

but register r28 was rewritten when kernel returns from exception
handler by value saved on stack.

This patch changed r3 saving to the correct address on the stack.
For example for r28:
by "swi r3, r1, 4 * 28"

When kernel returns from the exception handler, correct value is restored.
Signed-off-by: NMichal Simek <monstr@monstr.eu>

Do not trace arch_local_save_flags(), arch_local_irq_*() and friends.
Although they are marked inline, gcc may still make a function out of
them and add it to the pool of functions that are traced by the function
tracer. This can cause undesirable results (kernel panic, triple faults,
etc).

Add the notrace notation to prevent them from ever being traced.

Cc: Michal Simek <monstr@monstr.eu>
Signed-off-by: NSteven Rostedt <rostedt@goodmis.org>

This patch removes all the module loader hook implementations in the
architecture specific code where the functionality is the same as that
now provided by the recently added default hooks.
Signed-off-by: NJonas Bonn <jonas@southpole.se>
Acked-by: NMike Frysinger <vapier@gentoo.org>
Acked-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Tested-by: NMichal Simek <monstr@monstr.eu>
Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>