Some of the NOPs tables aren't used on 64-bits, quite some code and
data is needed post-init for module loading only, and a couple of
functions aren't used outside that file (i.e. can be static, and don't
need to be exported).

The change to __INITDATA/__INITRODATA is needed to avoid an assembler
warning.
Signed-off-by: NJan Beulich <jbeulich@novell.com>
LKML-Reference: <4A8BC8A00200007800010823@vpn.id2.novell.com>
Acked-by: NSam Ravnborg <sam@ravnborg.org>
Signed-off-by: NH. Peter Anvin <hpa@zytor.com>

Fully initialize bad_bios_desc statically instead of doing some
fields statically and some dynamically.
Suggested-by: N"H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: NAkinobu Mita <akinobu.mita@gmail.com>
LKML-Reference: <20090809080350.GA4765@localhost.localdomain>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

As suggested by Al, it's better to use the generic sys_pipe() for ia32.
Signed-off-by: NWANG Cong <amwang@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

This crash:

[    0.891983] calling  cache_sysfs_init+0x0/0x1ee @ 1
[    0.897251] initcall cache_sysfs_init+0x0/0x1ee returned 0 after 405 usecs
[    0.904019] calling  mce_init_device+0x0/0x242 @ 1
[    0.909124] initcall mce_init_device+0x0/0x242 returned 0 after 347 usecs
[    0.915815] calling  apm_init+0x0/0x38d @ 1
[    0.919967] apm: BIOS version 1.2 Flags 0x07 (Driver version 1.16ac)
[    0.926813] general protection fault: 0000 [#1]
[    0.927269] last sysfs file:
[    0.927269] Modules linked in:
[    0.927269]
[    0.927269] Pid: 271, comm: kapmd Not tainted (2.6.31-rc3-00100-gd520da1-dirty #311) System Product Name
[    0.927269] EIP: 00c0:[<000082b2>] EFLAGS: 00010002 CPU: 0
[    0.927269] EIP is at 0x82b2
[    0.927269] EAX: 0000530e EBX: 00000000 ECX: 00000102 EDX: 00000000
[    0.927269] ESI: 00000000 EDI: f6a4bf44 EBP: 67890000 ESP: f6a4beec
[    0.927269]  DS: 00c8 ES: 0000 FS: 0000 GS: 0000 SS: 0068
[    0.927269] Process kapmd (pid: 271, ti=f6a4a000 task=f7142280 task.ti=f6a4a000)
[    0.927269] Stack:
[    0.927269]  0000828d 02160000 00b88092 f6a4bf3c c102a63d 00000060 f6a4bf3c f6a4bf44
[    0.927269] <0> 0000007b 0000007b 00000000 00000000 00000000 00000000 560aae9e 00000000
[    0.927269] <0> 00000200 f705fd74 00000000 c102af70 f6a4bf60 c102a6ec 0000530e 00000000
[    0.927269] Call Trace:
[    0.927269]  [<c102a63d>] ? __apm_bios_call_simple+0x7d/0x110
[    0.927269]  [<c102af70>] ? apm+0x0/0x6a0
[    0.927269]  [<c102a6ec>] ? apm_bios_call_simple+0x1c/0x50
[    0.927269]  [<c102b3f5>] ? apm+0x485/0x6a0
[    0.927269]  [<c1038e7a>] ? finish_task_switch+0x2a/0xb0
[    0.927269]  [<c164a69e>] ? schedule+0x31e/0x480
[    0.927269]  [<c102af70>] ? apm+0x0/0x6a0
[    0.927269]  [<c102af70>] ? apm+0x0/0x6a0
[    0.927269]  [<c1052654>] ? kthread+0x74/0x80
[    0.927269]  [<c10525e0>] ? kthread+0x0/0x80
[    0.927269]  [<c101d627>] ? kernel_thread_helper+0x7/0x10
[    0.927269] Code:  Bad EIP value.
[    0.927269] EIP: [<000082b2>] 0x82b2 SS:ESP 0068:f6a4beec
[    0.927269] ---[ end trace a7919e7f17c0a725 ]---
[    0.927269] Kernel panic - not syncing: Fatal exception
[    0.927269] Pid: 271, comm: kapmd Tainted: G      D    2.6.31-rc3-00100-gd520da1-dirty #311

Is caused by an incorrect GDT_ENTRY_INIT() conversion in the apm
code, as noticed by hpa.
Reported-by: NIngo Molnar <mingo@elte.hu>
Noticed-by: N"H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: NAkinobu Mita <akinobu.mita@gmail.com>
LKML-Reference: <20090808094905.GA2954@localhost.localdomain>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

GDT_ENTRY_INIT is static initializer of desc_struct.

We already have similar macro GDT_ENTRY() but it's static
initializer for u64 and it cannot be used for desc_struct.
Signed-off-by: NAkinobu Mita <akinobu.mita@gmail.com>
LKML-Reference: <20090718151219.GD11294@localhost.localdomain>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Rename set_base()/set_limit to set_desc_base()/set_desc_limit()
and rewrite them in C. These are naturally introduced by the
idea of get_desc_base()/get_desc_limit().

The conversion actually found the bug in apm_32.c:
bad_bios_desc is written at run-time, but it is defined const
variable.
Signed-off-by: NAkinobu Mita <akinobu.mita@gmail.com>
LKML-Reference: <20090718151105.GC11294@localhost.localdomain>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

patch_espfix_desc() is not used after commit
dc4c2a0aSigned-off-by: NAkinobu Mita <akinobu.mita@gmail.com>
LKML-Reference: <20090718150955.GB11294@localhost.localdomain>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Use get_desc_base() to get the base address in desc_struct
Signed-off-by: NAkinobu Mita <akinobu.mita@gmail.com>
LKML-Reference: <20090718150853.GA11294@localhost.localdomain>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

asm/fpu.h uses the __IA64_UL macro which is declared in asm/types.h, so
this include is really required. Without it, GNU libc fails to build.

This reverts commit 2678c07b.
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>
Acked-by: NFenghua Yu <fenghua.yu@intel.com>

The commit 99162195 was supposed to
add CONFIG_DMA_API_DEBUG support to IA64 however I forgot to add
dma_debug_init().
Signed-off-by: Nfujita <fujita@tulip.osrg.net>
Acked-by: NFenghua Yu <fenghua.yu@intel.com>

When building ia64 kernel with CONFIG_XEN_SYS_HYPERVISOR, compiler reports
errors:

drivers/xen/sys-hypervisor.c: In function ‘uuid_show’:
drivers/xen/sys-hypervisor.c:125: error: implicit declaration of function ‘IS_ERR’
drivers/xen/sys-hypervisor.c:126: error: implicit declaration of function ‘PTR_ERR’

This patch fixes the errors.
Signed-off-by: NFenghua Yu <fenghua.yu@intel.com>
Acked-by: NIsaku Yamahata <yamahata@valinux.co.jp>

Avoid the following:
[    0.012093] WARNING: at arch/x86/kernel/apic/apic.c:249 native_apic_write_dummy+0x2f/0x40()

Rather than chase each new cpuid-detected feature, just lie about the highest
valid CPUID so this code is never run.
Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>

fix: "make Guest" was complaining about duplicated G:032
Signed-off-by: NMatias Zabaljauregui <zabaljauregui@gmail.com>
Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>

When moving load_up_altivec to vector.S a typo in a comment caused a
thinko setting the wrong variable.
Signed-off-by: NAndreas Schwab <schwab@linux-m68k.org>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>

On booke processors, gdb is seeing spurious SIGTRAPs when setting a
watchpoint.

user_disable_single_step() simply quits when the DAC is non-zero.  It should
be clearing the DBCR0_IC and DBCR0_BT bits from the dbcr0 register and
TIF_SINGLESTEP from the thread flag.
Signed-off-by: NDave Kleikamp <shaggy@linux.vnet.ibm.com>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>

when building 32-bit, I see this ..
arch/x86/kernel/pvclock.c:63:7: warning: "__x86_64__" is not defined
Signed-off-by: NDave Jones <davej@redhat.com>
LKML-Reference: <20090713201437.GA12165@redhat.com>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Remove duplicated #include('s) in
  arch/mn10300/kernel/sys_mn10300.c
Signed-off-by: NHuang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: NDavid Howells <dhowells@redhat.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

The variable apic_numaq placed in noninit section references the
function wakeup_secondary_cpu_via_nmi(), which is in __cpuinit
section. Thus causes a section mismatch warning. To avoid such
mismatch we mark apic_numaq as __refdata.

We were warned by the following warning:

  WARNING: arch/x86/kernel/built-in.o(.data+0x932c): Section mismatch in
  reference from the variable apic_numaq to the function
  .cpuinit.text:wakeup_secondary_cpu_via_nmi()
Signed-off-by: NRakib Mullick <rakib.mullick@gmail.com>
LKML-Reference: <b9df5fa10907120407p6b4f67dtf4d563155488188a@mail.gmail.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

The variable apic_es7000_cluster references the function __cpuinit
wakeup_secondary_cpu_via_mip() from a noninit section. So we've been
warned by the following warning. To avoid possible collision between
init/noninit, its best to mark the variable as __refdata.

We were warned by the following warning:

  LD      arch/x86/kernel/apic/built-in.o
  WARNING: arch/x86/kernel/apic/built-in.o(.data+0x198c): Section
  mismatch in reference from the variable apic_es7000_cluster to the
  function .cpuinit.text:wakeup_secondary_cpu_via_mip()
Signed-off-by: NRakib Mullick <rakib.mullick@gmail.com>
LKML-Reference: <b9df5fa10907120404k6279a10ch5e9682432272706f@mail.gmail.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

The name size limit is gone from the driver-core, the BUS_ID_SIZE
value will be removed.

Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: NKay Sievers <kay.sievers@vrfy.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

* Remove smp_lock.h from files which don't need it (including some headers!)
* Add smp_lock.h to files which do need it
* Make smp_lock.h include conditional in hardirq.h
  It's needed only for one kernel_locked() usage which is under CONFIG_PREEMPT

  This will make hardirq.h inclusion cheaper for every PREEMPT=n config
  (which includes allmodconfig/allyesconfig, BTW)
Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Since commit 5fd29d6c ("printk: clean up handling of log-levels
and newlines"), the kernel logs segfaults like:

    <6>gnome-power-man[24509]: segfault at 20 ip 00007f9d4950465a sp 00007fffbb50fc70 error 4 in libgobject-2.0.so.0.2103.0[7f9d494f7000+45000]

with the extra "<6>" being KERN_INFO.  This happens because the
printk in show_signal_msg() started with KERN_CONT and then
used "%s" to pass in the real level; and KERN_CONT is no longer
an empty string, and printk only pays attention to the level at
the very beginning of the format string.

Therefore, remove the KERN_CONT from this printk, since it is
now actively causing problems (and never really made any
sense).
Signed-off-by: NRoland Dreier <roland@digitalvampire.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <874otjitkj.fsf@shaolin.home.digitalvampire.org>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Pull the initial preempt_count value into a single
definition site.

Maintainers for: alpha, ia64 and m68k, please have a look,
your arch code is funny.

The header magic is a bit odd, but similar to the KERNEL_DS
one, CPP waits with expanding these macros until the
INIT_THREAD_INFO macro itself is expanded, which is in
arch/*/kernel/init_task.c where we've already included
sched.h so we're good.

Cc: tony.luck@intel.com
Cc: rth@twiddle.net
Cc: geert@linux-m68k.org
Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: NMatt Mackall <mpm@selenic.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Stephen reported that his DL585 G2 needed noapic after 2.6.22 (?)

Dann bisected it down to:
  commit 30a18d6c
  Date:   Tue Feb 19 03:21:20 2008 -0800

      x86: multi pci root bus with different io resource range, on
      64-bit

It turns out that:
  1. that AMD-based systems have two HT chains.
  2. BIOS doesn't allocate resources for BAR 6 of devices under 8132 etc
  3. that multi-peer-root patch will try to split root resources to peer
     root resources according to PCI conf of NB
  4. PCI core assigns unassigned resources, but they overlap with BARs
     that are used by ioapic addr of io4 and 8132.

The reason: at that point ioapic address are not inserted yet.  Solution
is to insert ioapic resources into the tree a bit earlier.
Reported-by: NStephen Frost <sfrost@snowman.net>
Reported-and-Tested-by: Ndann frazier <dannf@hp.com>
Signed-off-by: NYinghai Lu <yinghai@kernel.org>
Cc: stable@kernel.org
Signed-off-by: NJesse Barnes <jbarnes@jbarnes-g45.(none)>

Commit 1faa16d2 accidentally broke
the bdi congestion wait queue logic, causing us to wait on congestion
for WRITE (== 1) when we really wanted BLK_RW_ASYNC (== 0) instead.
Signed-off-by: NJens Axboe <jens.axboe@oracle.com>

The short name of the achitecture is 'arch_perfmon'. This patch
changes the kernel parameter to use this name.

Cc: Andi Kleen <andi@firstfloor.org>
Signed-off-by: NRobert Richter <robert.richter@amd.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Adding smp_mb__after_lock define to be used as a smp_mb call after
a lock.

Making it nop for x86, since {read|write|spin}_lock() on x86 are
full memory barriers.
Signed-off-by: NJiri Olsa <jolsa@redhat.com>
Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Alex found that specjbb2005 still can not run with hugepages on an
x86-64 machine.  This only happens when numa is not compiled in.

The root cause: node_set_state will not set it back for us in that case,
so don't clear that when numa is not select in config

[ v2: use node_clear_state instead ]
Reported-and-Tested-by: NAlex Shi <alex.shi@intel.com>
Signed-off-by: NYinghai Lu <yinghai@kernel.org>
Reviewed-by: NChristoph Lameter <cl@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Commit 5fd29d6c ("printk: clean up
handling of log-levels and newlines") changed printk semantics.  printk
lines with multiple KERN_<level> prefixes are no longer emitted as
before the patch.

<level> is now included in the output on each additional use.

Remove all uses of multiple KERN_<level>s in formats.
Signed-off-by: NJoe Perches <joe@perches.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Patch 08687aec71bc9134fe336e561f6did877bacf74fc0a (x86: unify
power/cpu_(32|64).c)  renamed cpu_32.c to cpu.c, but did not update
the special compilation flags for the file for the new name.

This patch fixes the compilation flags, and therefore fixes resume
from suspend on my Acer Aspire One.

[rjw: The regression from 2.6.30 fixed by this patch is tracked as
 http://bugzilla.kernel.org/show_bug.cgi?id=13661]
Signed-off-by: NPeter Chubb <peterc@nicta.com.au>
Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>

This patch fixes various badnesses like this for all interrupt
controllers:

------------[ cut here ]------------
Badness at c04db9dc [verbose debug info unavailable]
NIP: c04db9dc LR: c04db9ac CTR: 00000000
REGS: c053de30 TRAP: 0700   Not tainted  (2.6.31-rc1-00432-ge69b2b5-dirty)
MSR: 00021000 <ME,CE>  CR: 22020084  XER: 00000000
TASK = c0500480[0] 'swapper' THREAD: c053c000
GPR00: 00000001 c053dee0 c0500480 00000000 00000050 00000020 3fffffff 00000000
GPR08: 00000001 c0540000 e0080080 00000000 22000084 64183600 3ff8f800 00000000
GPR16: 841b0240 449a0303 00000000 00000000 00000000 00000000 00000000 c04f5bf4
GPR24: 00000000 00000000 00000000 00000050 00000020 00000000 3fffffff 00000050
NIP [c04db9dc] alloc_arch_preferred_bootmem+0x48/0x74
LR [c04db9ac] alloc_arch_preferred_bootmem+0x18/0x74
Call Trace:
[c053dee0] [c000a5a4] __of_address_to_resource+0x44/0xd0 (unreliable)
[c053def0] [c04dba58] ___alloc_bootmem_nopanic+0x50/0x108
[c053df20] [c04dbb28] ___alloc_bootmem+0x18/0x50
[c053df30] [c04d5de0] qe_ic_init+0x5c/0x1b0
[c053df70] [c04d77b0] mpc85xx_mds_pic_init+0xb8/0x10c
[c053dfb0] [c04cf374] init_IRQ+0x28/0x3c

p.s. commit 85355bb2 ("powerpc: Fix
mpic alloc warning") missed some alloc_bootmem() instances, this is
now fixed.
Signed-off-by: NAnton Vorontsov <avorontsov@ru.mvista.com>
Acked-by: NTimur Tabi <timur@freescale.com>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>

Current implementation of spin_event_timeout can be interrupted by an
IRQ or context switch after testing the condition, but before checking
the timeout.  This can cause the loop to report a timeout when the
condition actually became true in the middle.

This patch adds one final check of the condition upon exit of the loop
if the last test of the condition was still false.
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
Acked-by: NTimur Tabi <timur@freescale.com>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>

pr_debug() can now result in code being generated even when DEBUG
is not defined. That's not really desirable in some places.

With CONFIG_DYNAMIC_DEBUG=y:

size before:
   text    data     bss     dec     hex filename
   2036     368       8    2412     96c arch/powerpc/mm/pgtable.o

size after:
   text    data     bss     dec     hex filename
   1677     248       8    1933     78d arch/powerpc/mm/pgtable.o
Signed-off-by: NMichael Ellerman <michael@ellerman.id.au>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>

pr_debug() can now result in code being generated even when DEBUG
is not defined. That's not really desirable in some places.

With CONFIG_DYNAMIC_DEBUG=y:

size before:
   text    data     bss     dec     hex filename
   7083    1616       0    8699    21fb arch/powerpc/../axon_msi.o

size after:
   text    data     bss     dec     hex filename
   5772    1208       0    6980    1b44 arch/powerpc/../axon_msi.o
Signed-off-by: NMichael Ellerman <michael@ellerman.id.au>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>

pr_debug() can now result in code being generated even when DEBUG
is not defined. That's not really desirable in some places.

With CONFIG_DYNAMIC_DEBUG=y:

size before:
   text    data     bss     dec     hex filename
   3252     384       0    3636     e34 arch/powerpc/mm/gup.o

size after:
   text    data     bss     dec     hex filename
   2576      96       0    2672     a70 arch/powerpc/mm/gup.o
Signed-off-by: NMichael Ellerman <michael@ellerman.id.au>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>

pr_debug() can now result in code being generated even when DEBUG
is not defined. That's not really desirable in some places.

With CONFIG_DYNAMIC_DEBUG=y:

size before:
   text    data     bss     dec     hex filename
   3261     416       4    3681     e61 arch/powerpc/mm/slb.o

size after:
   text    data     bss     dec     hex filename
   2861     248       4    3113     c29 arch/powerpc/mm/slb.o
Signed-off-by: NMichael Ellerman <michael@ellerman.id.au>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>

Remove duplicated #include('s) in
  arch/powerpc/kernel/mpc7450-pmu.c
  arch/powerpc/kernel/ppc970-pmu.c
Signed-off-by: NHuang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>

pr_debug() can now result in code being generated even when DEBUG
is not defined. That's not really desirable in some places.

With CONFIG_DYNAMIC_DEBUG=y:

size before:
   text	   data	    bss	    dec	    hex	filename
   1508	     48	     28	   1584	    630	powerpc/mm/mmu_context_nohash.o

size after:
   text	   data	    bss	    dec	    hex	filename
   1088	      0	     28	   1116	    45c	powerpc/mm/mmu_context_nohash.o
Signed-off-by: NMichael Ellerman <michael@ellerman.id.au>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>

pr_debug() can now result in code being generated even when DEBUG
is not defined. That's not really desirable in some places.

With CONFIG_DYNAMIC_DEBUG=y:

size before:
   text    data     bss     dec     hex filename
   7720    5488     296   13504    34c0 platforms/pseries/xics.o

size after:
   text    data     bss     dec     hex filename
   7535	   5456	    296	  13287	   33e7	platforms/pseries/xics.o
Signed-off-by: NMichael Ellerman <michael@ellerman.id.au>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>

Signed-off-by: NJoe Perches <joe@perches.com>
Acked-by: NGeoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>