Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Now that all the direct includes of asm/of_device.h are gone, this is
safe to do.
Signed-off-by: NStephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The calls down into prom_printf() when we detect an overflowed stack
can recurse again since the overflow stack will be "below" the current
kernel stack limit.

Prevent this by just returning straight if we are on the stack
overflow safe stack already.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Based upon a report and initial patch by Friedrich Oslage.

The intention is to provide this facility for
__trigger_all_cpu_backtrace even if MAGIC_SYSRQ is not set.

The only part that should have MAGIC_SYSRQ ifdef protection is the
sparc_globalreg_op sysrq regitration and immediate code.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Bug reported by Alexander Beregalov.

Before we dereference the stack frame or try to peek at the
pt_regs magic value, make sure the entire object is within
the kernel stack bounds.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Use linux/of_device.h instead.
Signed-off-by: NStephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Noticed by Adrian Bunk.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Now that we have removed all inclusions of asm/of_platform.h, this
compatability include can be removed.
Signed-off-by: NStephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NAnton Vorontsov <avorontsov@ru.mvista.com>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: Wim Van Sebroeck <wim@iguana.be>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

This patch remove unneeded #include <linux/ide.h>'s.

It also adds a required #include <linux/interrupt.h> that was previously 
implicitely pulled by ide.h
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
[bart: revert change to tests/lkdtm.c (spotted by Stephen Rothwell)]
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Following files don't need <linux/hdreg.h> at all:

- arch/mips/jazz/setup.c
- arch/sh/boards/mach-systemh/irq.c
- drivers/macintosh/mediabay.c
- drivers/scsi/hptiop.c
- drivers/usb/storage/freecom.c
- arch/powerpc/include/asm/ide.h
- init/main.c

Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Platforms that are using GENERIC_BUG must call in to
module_bug_finalize()/module_bug_cleanup() in order to scan modules with
their own __bug_table sections that are otherwise unaccounted.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
Signed-off-by: NDavid Howells <dhowells@redhat.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

All of the xcall delivery implementation is cpumask agnostic, so
we can pass around pointers to const cpumask_t objects everywhere.

The sad remaining case is the argument to arch_send_call_function_ipi().
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

It can eat up a lot of stack space when NR_CPUS is large.
We retain some of it's functionality by reporting at least one
of the cpu's which are seen in error state.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Then modify all of the xcall dispatch implementations get passed and
use this information.

Now all of the xcall dispatch implementations do not need to be mindful
of details such as "is current cpu in the list?" and "is cpu online?"
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This just facilitates the next changeset where we'll be building
the cpu list and mondo block in this helper function.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The idea is that we'll use this cpu list array and mondo block
even for non-hypervisor platforms.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Ideally this could be simplified further such that we could pass
the pointer down directly into the xcall_deliver() implementation.

But if we do that we need to do the "cpu_online(cpu)" and
"cpu != self" checks down in those functions.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

We know the cpu is online and not the current cpu here.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

For these cases the callers make sure:

1) The cpus indicated are online.

2) The current cpu is not in the list of indicated cpus.

Therefore we can pass a pointer to the mask directly.

One of the motivations in this transformation is to make use of
"&cpumask_of_cpu(cpu)" which evaluates to a pointer to constant
data in the kernel and thus takes up no stack space.

Hopefully someone in the future will change the interface of
arch_send_call_function_ipi() such that it passes a const cpumask_t
pointer so that this will optimize ever further.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NDavid S. Miller <davem@davemloft.net>

There remained some spots still vectoring to the appropriate
*_xcall_deliver() function manually.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Initialize it using the smp_setup_processor_id() hook.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Removed duplicated #include <linux/tracehook.h> in
arch/sparc64/kernel/signal.c.
Signed-off-by: NHuang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Based upon a bug report by Mariusz Kozlowski

It uses smp_call_function_masked() now, which has a preemption-disabled
requirement.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Includes:
- SH2 (7619) Writeback support.
- SH2A cache handling fix.
Signed-off-by: NYoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Newfile: arch/sh/include/cpu-sh2a/cpu/addrspace.h

This file seems had be removed to use fallback (cpu-common/cpu/addrspace.h),
but, I'd like to add sh2a specific file here, because
1. the values defined there are not suitable for sh2a.
2. I don't think there is "common" definition for these values.

Values are chosen by consideration of followings...
 P1 is 0. perhaps no question.
 P2 is from hardware manual, which says no-cache area starts at 20000000.
 It means that P? space size=20000000.
 P3 is P2+size since asm/ptrace.h uses P3 as a end of P2.
 P4 is P3+size since asm/fixup.h uses P4 as a end of P3.
Signed-off-by: NTakashi YOSHII <yoshii.takashi@renesas.com>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

SH never really supported a.out, so this was all just copied over blindly
from x86 way back when. As we don't reference linux/a.out.h anywhere in
the tree, these can now safely be killed off.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

We haven't called in to __do_IRQ() in a long time, so it seems like a
reasonable time to switch this on by default.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Needed for fixing up the __raw_spin_is_contended() reference which
results in a build error.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Presently the NUMA node data isn't saved on kexec. This implements a
simple arch_crash_save_vmcoreinfo() for saving off the relevant data.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

SH-X2 extended mode TLB allows for toggling of the exec bit, so make
sure we are using the right protection bits for module space there
also.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

We should be calling in to the lib/bug.c module helpers, fix that up.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

These were completely unparseable, so fix them up.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Now that arch/ppc is gone and CONFIG_PPC_MERGE is always set, remove
the dead code associated with !CONFIG_PPC_MERGE from arch/powerpc
and include/asm-powerpc.
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

total_memory is a 'phys_addr_t', Which can be either 64 or 32 bits.
Force printing as unsigned long long to silence the warning.
Signed-off-by: NTony Breeds <tony@bakeyournoodle.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Explicitly cast to unsigned long long, rather than u64.
Signed-off-by: NTony Breeds <tony@bakeyournoodle.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

from include/asm-powerpc.  This is the result of a

mkdir arch/powerpc/include/asm
git mv include/asm-powerpc/* arch/powerpc/include/asm

Followed by a few documentation/comment fixups and a couple of places
where <asm-powepc/...> was being used explicitly.  Of the latter only
one was outside the arch code and it is a driver only built for powerpc.
Signed-off-by: NStephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: NPaul Mackerras <paulus@samba.org>