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15 years agox86: update io_apic.c to the new cpumask code
Ingo Molnar [Wed, 17 Dec 2008 12:35:51 +0000 (13:35 +0100)]
x86: update io_apic.c to the new cpumask code

Impact: build fix

The sparseirq tree crossed with the cpumask changes, fix the fallout.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agoMerge branch 'x86/crashdump' into cpus4096
Ingo Molnar [Wed, 17 Dec 2008 12:24:52 +0000 (13:24 +0100)]
Merge branch 'x86/crashdump' into cpus4096

Conflicts:
arch/x86/kernel/crash.c

Merged for semantic conflict:
arch/x86/kernel/reboot.c

15 years agoMerge branch 'irq/sparseirq' into cpus4096
Ingo Molnar [Wed, 17 Dec 2008 12:16:08 +0000 (13:16 +0100)]
Merge branch 'irq/sparseirq' into cpus4096

Conflicts:
arch/x86/kernel/io_apic.c

Merge irq/sparseirq here, to resolve conflicts.

15 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/travis/linux...
Ingo Molnar [Wed, 17 Dec 2008 12:08:34 +0000 (13:08 +0100)]
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/travis/linux-2.6-cpus4096-for-ingo into cpus4096

15 years agoMerge branch 'linus' into cpus4096
Ingo Molnar [Wed, 17 Dec 2008 12:07:48 +0000 (13:07 +0100)]
Merge branch 'linus' into cpus4096

15 years agox86: Introduce topology_core_cpumask()/topology_thread_cpumask()
Mike Travis [Wed, 17 Dec 2008 01:34:06 +0000 (17:34 -0800)]
x86: Introduce topology_core_cpumask()/topology_thread_cpumask()

Impact: new API

The old topology_core_siblings() and topology_thread_siblings() return
a cpumask_t; these new ones return a (const) struct cpumask *.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
15 years agox86: xen: use smp_call_function_many()
Mike Travis [Wed, 17 Dec 2008 01:34:05 +0000 (17:34 -0800)]
x86: xen: use smp_call_function_many()

Impact: use new API, remove cpumask from stack.

Change smp_call_function_mask() callers to smp_call_function_many().

This removes a cpumask from the stack, and falls back should allocating
the cpumask var fail (only possible with CONFIG_CPUMASKS_OFFSTACK).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Cc: jeremy@xensource.com
15 years agox86: use work_on_cpu in x86/kernel/cpu/mcheck/mce_amd_64.c
Mike Travis [Wed, 17 Dec 2008 01:34:04 +0000 (17:34 -0800)]
x86: use work_on_cpu in x86/kernel/cpu/mcheck/mce_amd_64.c

Impact: Remove cpumask_t's from stack.

Simple transition to work_on_cpu(), rather than cpumask games.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Robert Richter <robert.richter@amd.com>
Cc: jacob.shin@amd.com
15 years agox86: Remove cpumask games in x86/kernel/cpu/intel_cacheinfo.c
Mike Travis [Wed, 17 Dec 2008 01:34:03 +0000 (17:34 -0800)]
x86: Remove cpumask games in x86/kernel/cpu/intel_cacheinfo.c

Impact: remove cpumask_t from stack.

We should not try to save and restore cpus_allowed on current.

We can't use work_on_cpu() here, since it's in the hotplug cpu path
(if anyone else tries to get the hotplug lock from a workqueue we
could deadlock against them).

Fortunately, we can just use smp_call_function_single() since the
function can run from an interrupt.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
15 years agox86: Use cpumask accessors code for possible/present maps.
Mike Travis [Wed, 17 Dec 2008 01:34:02 +0000 (17:34 -0800)]
x86: Use cpumask accessors code for possible/present maps.

Impact: use new API

Use the accessors rather than frobbing bits directly.  Most of this is
in arch code I haven't even compiled, but is straightforward.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
15 years agox86: prepare for cpumask iterators to only go to nr_cpu_ids
Mike Travis [Wed, 17 Dec 2008 01:34:01 +0000 (17:34 -0800)]
x86: prepare for cpumask iterators to only go to nr_cpu_ids

Impact: cleanup, futureproof

In fact, all cpumask ops will only be valid (in general) for bit
numbers < nr_cpu_ids.  So use that instead of NR_CPUS in various
places.

This is always safe: no cpu number can be >= nr_cpu_ids, and
nr_cpu_ids is initialized to NR_CPUS at boot.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
15 years agox86: Set CONFIG_NR_CPUS even on UP
Mike Travis [Wed, 17 Dec 2008 01:34:00 +0000 (17:34 -0800)]
x86: Set CONFIG_NR_CPUS even on UP

Impact: cleanup

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
15 years agox86: cosmetic changes apic-related files.
Mike Travis [Wed, 17 Dec 2008 01:33:59 +0000 (17:33 -0800)]
x86: cosmetic changes apic-related files.

This patch simply changes cpumask_t to struct cpumask and similar
trivial modernizations.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
15 years agox86: fixup_irqs() doesnt need an argument.
Mike Travis [Wed, 17 Dec 2008 01:33:58 +0000 (17:33 -0800)]
x86: fixup_irqs() doesnt need an argument.

Impact: cleanup, remove on-stack cpumask.

The "map" arg is always cpu_online_mask.  Importantly, set_affinity
always ands the argument with cpu_online_mask anyway, so we don't need
to do it in fixup_irqs(), avoiding a temporary.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
15 years agoxen: convert to cpumask_var_t and new cpumask primitives.
Mike Travis [Wed, 17 Dec 2008 01:33:57 +0000 (17:33 -0800)]
xen: convert to cpumask_var_t and new cpumask primitives.

Simple change, and eventual space saving when NR_CPUS >> nr_cpu_ids.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Cc: Jeremy Fitzhardinge <jeremy@xensource.com>
15 years agox86: Update io_apic.c to use new cpumask API
Mike Travis [Wed, 17 Dec 2008 01:33:56 +0000 (17:33 -0800)]
x86: Update io_apic.c to use new cpumask API

Impact: cleanup, consolidate patches, use new API

Consolidate the following into a single patch to adapt to new
sparseirq code in arch/x86/kernel/io_apic.c, add allocation of
cpumask_var_t's in domain and old_domain, and reduce further
merge conflicts.  Only one file (arch/x86/kernel/io_apic.c) is
changed in all of these patches.

0006-x86-io_apic-change-irq_cfg-domain-old_domain-to.patch
0007-x86-io_apic-set_desc_affinity.patch
0008-x86-io_apic-send_cleanup_vector.patch
0009-x86-io_apic-eliminate-remaining-cpumask_ts-from-st.patch
0021-x86-final-cleanups-in-io_apic-to-use-new-cpumask-AP.patch

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
15 years agox86: update add-cpu_mask_to_apicid_and to use struct cpumask*
Mike Travis [Wed, 17 Dec 2008 01:33:55 +0000 (17:33 -0800)]
x86: update add-cpu_mask_to_apicid_and to use struct cpumask*

Impact: use updated APIs

Various API updates for x86:add-cpu_mask_to_apicid_and

(Note: separate because previous patch has been "backported" to 2.6.27.)

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
15 years agox86: Add cpu_mask_to_apicid_and
Mike Travis [Wed, 17 Dec 2008 01:33:54 +0000 (17:33 -0800)]
x86: Add cpu_mask_to_apicid_and

Impact: new API

Add a helper function that takes two cpumask's, and's them and then
returns the apicid of the result.  This removes a need in io_apic.c
that uses a temporary cpumask to hold (mask & cfg->domain).

Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
15 years agox86: move and enhance debug printk for nr_cpu_ids etc.
Mike Travis [Wed, 17 Dec 2008 01:33:53 +0000 (17:33 -0800)]
x86: move and enhance debug printk for nr_cpu_ids etc.

Impact: cleanup, better debugging

This has proven useful in debugging, *before* we try to use
for_each_possible_cpu().  It also now shows nr_cpumask_bits.

Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
15 years agox86 smp: modify send_IPI_mask interface to accept cpumask_t pointers
Mike Travis [Wed, 17 Dec 2008 01:33:52 +0000 (17:33 -0800)]
x86 smp: modify send_IPI_mask interface to accept cpumask_t pointers

Impact: cleanup, change parameter passing

  * Change genapic interfaces to accept cpumask_t pointers where possible.

  * Modify external callers to use cpumask_t pointers in function calls.

  * Create new send_IPI_mask_allbutself which is the same as the
    send_IPI_mask functions but removes smp_processor_id() from list.
    This removes another common need for a temporary cpumask_t variable.

  * Functions that used a temp cpumask_t variable for:

cpumask_t allbutme = cpu_online_map;

cpu_clear(smp_processor_id(), allbutme);
if (!cpus_empty(allbutme))
...

    become:

if (!cpus_equal(cpu_online_map, cpumask_of_cpu(cpu)))
...

  * Other minor code optimizations (like using cpus_clear instead of
    CPU_MASK_NONE, etc.)

Applies to linux-2.6.tip/master.

Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Ingo Molnar <mingo@elte.hu>
15 years agox86: enable MAXSMP
Mike Travis [Wed, 17 Dec 2008 01:33:51 +0000 (17:33 -0800)]
x86: enable MAXSMP

Impact: activates new off-stack cpumask code on MAXSMP (non-default) x86 configs

Set MAXSMP to enable CONFIG_CPUMASK_OFFSTACK which moves cpumask's off
the stack (and in structs) when using cpumask_var_t.

Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Ingo Molnar <mingo@elte.hy>
15 years agosparseirq: fix !SMP building, #2
Yinghai Lu [Fri, 12 Dec 2008 21:14:18 +0000 (13:14 -0800)]
sparseirq: fix !SMP building, #2

Impact: build fix

make intr_remapping.c to include smp.h, so could use boot_cpu_id there

also remove old change that disabling sparseirq with !SMP

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agox86, sparseirq: move irq_desc according to smp_affinity, v7
Yinghai Lu [Thu, 11 Dec 2008 08:15:01 +0000 (00:15 -0800)]
x86, sparseirq: move irq_desc according to smp_affinity, v7

Impact: improve NUMA handling by migrating irq_desc on smp_affinity changes

if CONFIG_NUMA_MIGRATE_IRQ_DESC is set:

-  make irq_desc to go with affinity aka irq_desc moving etc
-  call move_irq_desc in irq_complete_move()
-  legacy irq_desc is not moved, because they are allocated via static array

for logical apic mode, need to add move_desc_in_progress_in_same_domain,
otherwise it will not be moved ==> also could need two phases to get
irq_desc moved.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agox86: fix build error with post-merge of tip/cpus4096 and rr-for-ingo/master.
Mike Travis [Tue, 16 Dec 2008 17:13:11 +0000 (09:13 -0800)]
x86: fix build error with post-merge of tip/cpus4096 and rr-for-ingo/master.

Ingo Molnar wrote:

> allyes64 build failure:
>
> arch/x86/kernel/io_apic.c: In function â€˜set_ir_ioapic_affinity_irq_desc’:
> arch/x86/kernel/io_apic.c:2295: error: incompatible type for argument 2 of
> â€˜migrate_ioapic_irq_desc’
> arch/x86/kernel/io_apic.c: In function â€˜ir_set_msi_irq_affinity’:
> arch/x86/kernel/io_apic.c:3205: error: incompatible type for argument 2 of
> â€˜set_extra_move_desc’
> make[1]: *** wait: No child processes.  Stop.

Here's a small patch to correct the build error with the post-merge tree.
Built and boot-tested.  I'll will reset the follow on patches in my brand
new git tree to accommodate this change.

Fix two references in io_apic.c that were incorrect.

Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394...
Linus Torvalds [Tue, 16 Dec 2008 17:49:10 +0000 (09:49 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
  ieee1394: add quirk fix for Freecom HDD

15 years agoMerge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzi...
Linus Torvalds [Tue, 16 Dec 2008 17:48:53 +0000 (09:48 -0800)]
Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  pata_hpt366: no ATAPI DMA
  pata_hpt366: fix cable detection,
  libata: fix Seagate NCQ+FLUSH blacklist

15 years agoMerge branch 'sh/for-2.6.28' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal...
Linus Torvalds [Tue, 16 Dec 2008 17:47:58 +0000 (09:47 -0800)]
Merge branch 'sh/for-2.6.28' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6

* 'sh/for-2.6.28' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6:
  sh: Disable GENERIC_HARDIRQS_NO__DO_IRQ for unconverted platforms.
  sh: maple: Do not pass SLAB_POISON to kmem_cache_create()

15 years agoMerge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
Linus Torvalds [Tue, 16 Dec 2008 17:47:43 +0000 (09:47 -0800)]
Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
  powerpc/cell/axon-msi: Fix MSI after kexec
  powerpc: Fix bootmem reservation on uninitialized node
  powerpc: Check for valid hugepage size in hugetlb_get_unmapped_area

15 years agomm: Don't touch uninitialized variable in do_pages_stat_array()
KOSAKI Motohiro [Tue, 16 Dec 2008 07:06:43 +0000 (16:06 +0900)]
mm: Don't touch uninitialized variable in do_pages_stat_array()

Commit 80bba1290ab5122c60cdb73332b26d288dc8aedd removed one necessary
variable initialization.  As a result following warning happened:

    CC      mm/migrate.o
  mm/migrate.c: In function 'sys_move_pages':
  mm/migrate.c:1001: warning: 'err' may be used uninitialized in this function

More unfortunately, if find_vma() failed, kernel read uninitialized
memory.

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
CC: Brice Goglin <Brice.Goglin@inria.fr>
Cc: Christoph Lameter <clameter@sgi.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Nick Piggin <npiggin@suse.de>
Cc: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux...
Ingo Molnar [Tue, 16 Dec 2008 11:24:38 +0000 (12:24 +0100)]
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-ingo into cpus4096

15 years agoMerge branch 'linus' into cpus4096
Ingo Molnar [Tue, 16 Dec 2008 11:24:26 +0000 (12:24 +0100)]
Merge branch 'linus' into cpus4096

15 years agopata_hpt366: no ATAPI DMA
Tejun Heo [Tue, 9 Dec 2008 08:14:04 +0000 (17:14 +0900)]
pata_hpt366: no ATAPI DMA

IDE hpt366 driver doesn't allow DMA for ATAPI devices and MWDMA2 on
ATAPI device locks up pata_hpt366.  Follow the suit.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
15 years agopata_hpt366: fix cable detection,
Tejun Heo [Tue, 9 Dec 2008 08:13:19 +0000 (17:13 +0900)]
pata_hpt366: fix cable detection,

pata_hpt366 is strange in that its two channels occupy two PCI
functions and both are primary channels and bit1 of PCI configuration
register 0x5A indicates cable for both channels.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
15 years agolibata: fix Seagate NCQ+FLUSH blacklist
Tejun Heo [Thu, 11 Dec 2008 04:42:42 +0000 (13:42 +0900)]
libata: fix Seagate NCQ+FLUSH blacklist

Due to miscommunication, P/N was mistaken as firmware revision
strings.  Update it.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
15 years agoproc: enclose desc variable of show_stat() in CONFIG_SPARSE_IRQ
KOSAKI Motohiro [Tue, 16 Dec 2008 08:23:34 +0000 (00:23 -0800)]
proc: enclose desc variable of show_stat() in CONFIG_SPARSE_IRQ

Impact: restructure code to fix compiler warning

commit 240d367b4e6c6e3c5075e034db14dba60a6f5fa7 moved desc usage point
into #ifdef CONFIG_SPARSE_IRQ.

Eliminate the desc variable, otherwise following warning happens:

 fs/proc/stat.c: In function 'show_stat':
 fs/proc/stat.c:31: warning: unused variable 'desc'

[ akpm: cleaned up the patch to remove #ifdef ]

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agosh: Disable GENERIC_HARDIRQS_NO__DO_IRQ for unconverted platforms.
Paul Mundt [Mon, 8 Dec 2008 02:45:37 +0000 (11:45 +0900)]
sh: Disable GENERIC_HARDIRQS_NO__DO_IRQ for unconverted platforms.

Presently limited to Cayman, Dreamcast, Microdev, and SystemH 7751.
Re-enable it for everyone once these have been fixed up.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: maple: Do not pass SLAB_POISON to kmem_cache_create()
Matt Fleming [Tue, 16 Dec 2008 00:15:31 +0000 (09:15 +0900)]
sh: maple: Do not pass SLAB_POISON to kmem_cache_create()

SLAB_POISON is not a valid flag for kmem_create_cache() unless
CONFIG_DEBUG_SLAB is set, so remove it from the flags argument.

Acked-by: Adrian McMenamin <adrian@newgolddream.dyndns.info>
Signed-off-by: Matt Fleming <mjf@gentoo.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agopowerpc/cell/axon-msi: Fix MSI after kexec
Arnd Bergmann [Fri, 12 Dec 2008 09:19:50 +0000 (09:19 +0000)]
powerpc/cell/axon-msi: Fix MSI after kexec

Commit d015fe995 'powerpc/cell/axon-msi: Retry on missing interrupt'
has turned a rare failure to kexec on QS22 into a reproducible
error, which we have now analysed.

The problem is that after a kexec, the MSIC hardware still points
into the middle of the old ring buffer.  We set up the ring buffer
during reboot, but not the offset into it.  On older kernels, this
would cause a storm of thousands of spurious interrupts after a
kexec, which would most of the time get dropped silently.

With the new code, we time out on each interrupt, waiting for
it to become valid.  If more interrupts come in that we time
out on, this goes on indefinitely, which eventually leads to
a hard crash.

The solution in this commit is to read the current offset from
the MSIC when reinitializing it.  This now works correctly, as
expected.

Reported-by: Dirk Herrendoerfer <d.herrendoerfer@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
15 years agopowerpc: Fix bootmem reservation on uninitialized node
Dave Hansen [Thu, 11 Dec 2008 08:36:06 +0000 (08:36 +0000)]
powerpc: Fix bootmem reservation on uninitialized node

careful_allocation() was calling into the bootmem allocator for
nodes which had not been fully initialized and caused a previous
bug:  http://patchwork.ozlabs.org/patch/10528/  So, I merged a
few broken out loops in do_init_bootmem() to fix it.  That changed
the code ordering.

I think this bug is triggered by having reserved areas for a node
which are spanned by another node's contents.  In the
mark_reserved_regions_for_nid() code, we attempt to reserve the
area for a node before we have allocated the NODE_DATA() for that
nid.  We do this since I reordered that loop.  I suck.

This is causing crashes at bootup on some systems, as reported
by Jon Tollefson.

This may only present on some systems that have 16GB pages
reserved.  But, it can probably happen on any system that is
trying to reserve large swaths of memory that happen to span other
nodes' contents.

This commit ensures that we do not touch bootmem for any node which
has not been initialized, and also removes a compile warning about
an unused variable.

Signed-off-by: Dave Hansen <dave@linux.vnet.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
15 years agopowerpc: Check for valid hugepage size in hugetlb_get_unmapped_area
Brian King [Thu, 4 Dec 2008 04:07:54 +0000 (04:07 +0000)]
powerpc: Check for valid hugepage size in hugetlb_get_unmapped_area

It looks like most of the hugetlb code is doing the correct thing if
hugepages are not supported, but the mmap code is not.  If we get into
the mmap code when hugepages are not supported, such as in an LPAR
which is running Active Memory Sharing, we can oops the kernel.  This
fixes the oops being seen in this path.

oops: Kernel access of bad area, sig: 11 [#1]
SMP NR_CPUS=1024 NUMA pSeries
Modules linked in: nfs(N) lockd(N) nfs_acl(N) sunrpc(N) ipv6(N) fuse(N) loop(N)
dm_mod(N) sg(N) ibmveth(N) sd_mod(N) crc_t10dif(N) ibmvscsic(N)
scsi_transport_srp(N) scsi_tgt(N) scsi_mod(N)
Supported: No
NIP: c000000000038d60 LR: c00000000003945c CTR: c0000000000393f0
REGS: c000000077e7b830 TRAP: 0300   Tainted: G
(2.6.27.5-bz50170-2-ppc64)
MSR: 8000000000009032 <EE,ME,IR,DR>  CR: 44000448  XER: 20000001
DAR: c000002000af90a8, DSISR: 0000000040000000
TASK = c00000007c1b8600[4019] 'hugemmap01' THREAD: c000000077e78000 CPU: 6
GPR00: 0000001fffffffe0 c000000077e7bab0 c0000000009a4e78 0000000000000000
GPR04: 0000000000010000 0000000000000001 00000000ffffffff 0000000000000001
GPR08: 0000000000000000 c000000000af90c8 0000000000000001 0000000000000000
GPR12: 000000000000003f c000000000a73880 0000000000000000 0000000000000000
GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000010000
GPR20: 0000000000000000 0000000000000003 0000000000010000 0000000000000001
GPR24: 0000000000000003 0000000000000000 0000000000000001 ffffffffffffffb5
GPR28: c000000077ca2e80 0000000000000000 c00000000092af78 0000000000010000
NIP [c000000000038d60] .slice_get_unmapped_area+0x6c/0x4e0
LR [c00000000003945c] .hugetlb_get_unmapped_area+0x6c/0x80
Call Trace:
[c000000077e7bbc0] [c00000000003945c] .hugetlb_get_unmapped_area+0x6c/0x80
[c000000077e7bc30] [c000000000107e30] .get_unmapped_area+0x64/0xd8
[c000000077e7bcb0] [c00000000010b140] .do_mmap_pgoff+0x140/0x420
[c000000077e7bd80] [c00000000000bf5c] .sys_mmap+0xc4/0x140
[c000000077e7be30] [c0000000000086b4] syscall_exit+0x0/0x40
Instruction dump:
fac1ffb0 fae1ffb8 fb01ffc0 fb21ffc8 fb41ffd0 fb61ffd8 fb81ffe0 fbc1fff0
fbe1fff8 f821fef1 f8c10158 f8e10160 <7d49002ef9010168 e92d01b0 eb4902b0

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
15 years agoMerge master.kernel.org:/home/rmk/linux-2.6-arm
Linus Torvalds [Tue, 16 Dec 2008 00:31:05 +0000 (16:31 -0800)]
Merge master.kernel.org:/home/rmk/linux-2.6-arm

* master.kernel.org:/home/rmk/linux-2.6-arm:
  [ARM] 5348/1: fix documentation wrt location of the alignment trap interface
  [ARM] Ensure linux/hardirqs.h is included where required
  [ARM] fix kernel-doc syntax
  [ARM] arch/arm/common/sa1111.c: Correct error handling code
  [ARM] 5341/2: there is no copy_page on nommu ARM

15 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
Linus Torvalds [Tue, 16 Dec 2008 00:30:22 +0000 (16:30 -0800)]
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
  Phonet: keep TX queue disabled when the device is off
  SCHED: netem: Correct documentation comment in code.
  netfilter: update rwlock initialization for nat_table
  netlabel: Compiler warning and NULL pointer dereference fix
  e1000e: fix double release of mutex
  IA64: HP_SIMETH needs to depend upon NET
  netpoll: fix race on poll_list resulting in garbage entry
  ipv6: silence log messages for locally generated multicast
  sungem: improve ethtool output with internal pcs and serdes
  tcp: tcp_vegas cong avoid fix
  sungem: Make PCS PHY support partially work again.

15 years agoDefine smp_call_function_many for UP
Rusty Russell [Mon, 15 Dec 2008 08:34:35 +0000 (19:04 +1030)]
Define smp_call_function_many for UP

Otherwise those using it in transition patches (eg. kvm) can't compile
with CONFIG_SMP=n:

arch/x86/kvm/../../../virt/kvm/kvm_main.c: In function 'make_all_cpus_request':
arch/x86/kvm/../../../virt/kvm/kvm_main.c:380: error: implicit declaration of function 'smp_call_function_many'

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agocgroups: fix a race between rmdir and remount
Paul Menage [Mon, 15 Dec 2008 21:54:22 +0000 (13:54 -0800)]
cgroups: fix a race between rmdir and remount

When a cgroup is removed, it's unlinked from its parent's children list,
but not actually freed until the last dentry on it is released (at which
point cgrp->root->number_of_cgroups is decremented).

Currently rebind_subsystems checks for the top cgroup's child list being
empty in order to rebind subsystems into or out of a hierarchy - this can
result in the set of subsystems bound to a hierarchy being
removed-but-not-freed cgroup.

The simplest fix for this is to forbid remounts that change the set of
subsystems on a hierarchy that has removed-but-not-freed cgroups.  This
bug can be reproduced via:

mkdir /mnt/cg
mount -t cgroup -o ns,freezer cgroup /mnt/cg
mkdir /mnt/cg/foo
sleep 1h < /mnt/cg/foo &
rmdir /mnt/cg/foo
mount -t cgroup -o remount,ns,devices,freezer cgroup /mnt/cg
kill $!

Though the above will cause oops in -mm only but not mainline, but the bug
can cause memory leak in mainline (and even oops)

Signed-off-by: Paul Menage <menage@google.com>
Reviewed-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoACPI toshiba: only register rfkill if bt is enabled
Frederik Deweerdt [Mon, 15 Dec 2008 21:54:19 +0000 (13:54 -0800)]
ACPI toshiba: only register rfkill if bt is enabled

Part of the rfkill initialization was done whenever BT was on or not.  The
following patch checks for BT presence before registering the rfkill to
the input layer.  Some minor cleanups (> 80 char lines) were also added in
the process.

On Tue, Oct 28, 2008 at 10:10:37PM +0300, Andrey Borzenkov wrote:
[...]
> [   66.633036] toshiba_acpi: Toshiba Laptop ACPI Extras version 0.19
> [   66.633054] toshiba_acpi:     HCI method: \_SB_.VALD.GHCI
> [   66.637764] input: Toshiba RFKill Switch as /devices/virtual/input/input3
[...]
> [  113.920753] ------------[ cut here ]------------
> [  113.920828] kernel BUG at /home/bor/src/linux-git/net/rfkill/rfkill.c:347!
> [  113.920845] invalid opcode: 0000 [#1]
> [  113.920877] last sysfs file: /sys/devices/pci0000:00/0000:00:04.0/host0/target0:0:0/0:0:0:0/block/sda/size
> [  113.920900] Dumping ftrace buffer:
> [  113.920919]    (ftrace buffer empty)
> [  113.920933] Modules linked in: af_packet irnet ppp_generic slhc ircomm_tty ircomm binfmt_misc loop dm_mirror dm_region_hash dm_log dm_round_robin dm_multipath dm_mod alim15x3 ide_core nvram toshiba cryptomgr aead crypto_blkcipher michael_mic crypto_algapi orinoco_cs orinoco hermes_dld hermes pcmcia firmware_class snd_ali5451 snd_ac97_codec ac97_bus snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device smsc_ircc2 snd_pcm_oss snd_pcm rtc_cmos irda snd_timer snd_mixer_oss rtc_core snd crc_ccitt yenta_socket rtc_lib rsrc_nonstatic i2c_ali1535 pcmcia_core pcspkr psmouse soundcore i2c_core evdev sr_mod snd_page_alloc alim1535_wdt cdrom fan sg video output toshiba_acpi rfkill thermal backlight ali_agp processor ac button input_polldev battery agpgart ohci_hcd usbcore reiserfs pata_ali libata sd_mod scsi_mod [last unloaded: scsi_wait_scan]
> [  113.921765]
> [  113.921785] Pid: 3272, comm: ipolldevd Not tainted (2.6.28-rc2-1avb #3) PORTEGE 4000
> [  113.921801] EIP: 0060:[<dfaa4683>] EFLAGS: 00010246 CPU: 0
> [  113.921854] EIP is at rfkill_force_state+0x53/0x90 [rfkill]
> [  113.921870] EAX: 00000000 EBX: 00000000 ECX: 00000003 EDX: 00000000
> [  113.921885] ESI: 00000000 EDI: ddd50300 EBP: d8d7af40 ESP: d8d7af24
> [  113.921900]  DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
> [  113.921918] Process ipolldevd (pid: 3272, ti=d8d7a000 task=d8d93c90 task.ti=d8d7a000)
> [  113.921933] Stack:
> [  113.921945]  d8d7af38 00000246 dfb029d8 dfb029c0 dfb029d8 dfb029c0 ddd50300 d8d7af5c
> [  113.922014]  dfb018e2 01000246 01000000 ddd50300 ddd50314 ddabb8a0 d8d7af68 dfb381c1
> [  113.922098]  00000000 d8d7afa4 c012ec0a 00000000 00000002 00000000 c012eba8 ddabb8c0
> [  113.922240] Call Trace:
> [  113.922240]  [<dfb018e2>] ? bt_poll_rfkill+0x5c/0x82 [toshiba_acpi]
> [  113.922240]  [<dfb381c1>] ? input_polled_device_work+0x11/0x40 [input_polldev]
> [  113.922240]  [<c012ec0a>] ? run_workqueue+0xea/0x1f0
> [  113.922240]  [<c012eba8>] ? run_workqueue+0x88/0x1f0
> [  113.922240]  [<dfb381b0>] ? input_polled_device_work+0x0/0x40 [input_polldev]
> [  113.922240]  [<c012f047>] ? worker_thread+0x87/0xf0
> [  113.922240]  [<c0132b00>] ? autoremove_wake_function+0x0/0x50
> [  113.922240]  [<c012efc0>] ? worker_thread+0x0/0xf0
> [  113.922240]  [<c013280f>] ? kthread+0x3f/0x80
> [  113.922240]  [<c01327d0>] ? kthread+0x0/0x80
> [  113.922240]  [<c01040d7>] ? kernel_thread_helper+0x7/0x10
> [  113.922240] Code: 43 54 89 73 54 39 c6 74 11 89 d9 ba 01 00 00 00 b8 40 68 aa df e8 3e 35 69 e0 89 f8 e8 77 fd 85 e0 31 c0 83 c4 10 5b 5e 5f 5d c3 <0f> 0b eb fe 89 f6 8d bc 27 00 00 00 00 be f4 4d aa df bb 5f 01
> [  113.922240] EIP: [<dfaa4683>] rfkill_force_state+0x53/0x90 [rfkill] SS:ESP 0068:d8d7af24
> [  113.924700] ---[ end trace 0e404eb40cadd5f0 ]---

Signed-off-by: Frederik Deweerdt <frederik.deweerdt@gmail.com>
Tested-by: Andrey Borzenkov <arvidjaar@mail.ru>
Acked-by: Len Brown <len.brown@intel.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Acked-by: Philip Langdale <philipl@overt.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoeCryptfs: Update maintainers
Michael Halcrow [Mon, 15 Dec 2008 21:54:17 +0000 (13:54 -0800)]
eCryptfs: Update maintainers

Tyler Hicks and Dustin Kirkland are now the primary contact points for
eCryptfs issues that may arise from this point forward.

Signed-off-by: Michael Halcrow <mhalcrow@us.ibm.com>
Acked-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
Acked-by: Dustin Kirkland <kirkland@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoslob: do not pass the SLAB flags as GFP in kmem_cache_create()
Catalin Marinas [Mon, 15 Dec 2008 21:54:16 +0000 (13:54 -0800)]
slob: do not pass the SLAB flags as GFP in kmem_cache_create()

The kmem_cache_create() function in the slob allocator passes the SLAB
flags as GFP flags to the slob_alloc() function.  The patch changes this
call to pass GFP_KERNEL as the other allocators seem to do.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Matt Mackall <mpm@selenic.com>
Cc: Cyrill Gorcunov <gorcunov@gmail.com>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agopcmcia: blackfin: fix bug - add missing ; to MODULE macro
Mike Frysinger [Mon, 15 Dec 2008 21:54:14 +0000 (13:54 -0800)]
pcmcia: blackfin: fix bug - add missing ; to MODULE macro

Cc: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years ago[ARM] 5348/1: fix documentation wrt location of the alignment trap interface
Nicolas Pitre [Mon, 15 Dec 2008 02:09:15 +0000 (03:09 +0100)]
[ARM] 5348/1: fix documentation wrt location of the alignment trap interface

Signed-off-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
15 years ago[ARM] Ensure linux/hardirqs.h is included where required
Russell King [Sun, 14 Dec 2008 18:01:44 +0000 (18:01 +0000)]
[ARM] Ensure linux/hardirqs.h is included where required

... for the removal of it from asm-generic/local.h

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
15 years agoPhonet: keep TX queue disabled when the device is off
Rémi Denis-Courmont [Mon, 15 Dec 2008 08:53:57 +0000 (00:53 -0800)]
Phonet: keep TX queue disabled when the device is off

Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoSCHED: netem: Correct documentation comment in code.
Jesper Dangaard Brouer [Mon, 15 Dec 2008 08:39:17 +0000 (00:39 -0800)]
SCHED: netem: Correct documentation comment in code.

The netem simulator is no longer limited by Linux timer resolution HZ.
Not since Patrick McHardy changed the QoS system to use hrtimer.

Signed-off-by: Jesper Dangaard Brouer <hawk@comx.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agonetfilter: update rwlock initialization for nat_table
Steven Rostedt [Mon, 15 Dec 2008 08:19:14 +0000 (00:19 -0800)]
netfilter: update rwlock initialization for nat_table

The commit e099a173573ce1ba171092aee7bb3c72ea686e59
(netfilter: netns nat: per-netns NAT table) renamed the
nat_table from __nat_table to nat_table without updating the
__RW_LOCK_UNLOCKED(__nat_table.lock).

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoMerge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/galak/powerpc
Linus Torvalds [Mon, 15 Dec 2008 00:25:19 +0000 (16:25 -0800)]
Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/galak/powerpc

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/galak/powerpc:
  powerpc/fsl-booke: Fix problem with _tlbil_va being interrupted

15 years agox86 Fix VMI crash on boot in 2.6.28-rc8
Zachary Amsden [Sat, 13 Dec 2008 20:36:58 +0000 (12:36 -0800)]
x86 Fix VMI crash on boot in 2.6.28-rc8

VMI initialiation can relocate the fixmap, causing early_ioremap to
malfunction if it is initialized before the relocation.  To fix this,
VMI activation is split into two phases; the detection, which must
happen before setting up ioremap, and the activation, which must happen
after parsing early boot parameters.

This fixes a crash on boot when VMI is enabled under VMware.

Signed-off-by: Zachary Amsden <zach@vmware.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoRevert "sched_clock: prevent scd->clock from moving backwards"
Linus Torvalds [Sun, 14 Dec 2008 23:46:01 +0000 (15:46 -0800)]
Revert "sched_clock: prevent scd->clock from moving backwards"

This reverts commit 5b7dba4ff834259a5623e03a565748704a8fe449, which
caused a regression in hibernate, reported by and bisected by Fabio
Comolli.

This revert fixes

 http://bugzilla.kernel.org/show_bug.cgi?id=12155
 http://bugzilla.kernel.org/show_bug.cgi?id=12149

Bisected-by: Fabio Comolli <fabio.comolli@gmail.com>
Requested-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years ago[ARM] fix kernel-doc syntax
Randy Dunlap [Mon, 1 Dec 2008 22:15:37 +0000 (14:15 -0800)]
[ARM] fix kernel-doc syntax

Fix kernel-doc notation to use correct syntax.  Even though this should be
moved to where the function is actually implemented...

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
15 years ago[ARM] arch/arm/common/sa1111.c: Correct error handling code
Julia Lawall [Sat, 13 Dec 2008 15:37:59 +0000 (16:37 +0100)]
[ARM] arch/arm/common/sa1111.c: Correct error handling code

If it is reasonable to apply PTR_ERR to the result of calling clk_get, then
that result should first be tested with IS_ERR, not with !.

The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@
expression E,E1;
@@

if (
-   E == NULL
+   IS_ERR(E)
   ) { <+... when != E = E1
        PTR_ERR(E)
       ...+> }
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
15 years agoieee1394: add quirk fix for Freecom HDD
Stefan Richter [Sat, 13 Dec 2008 00:43:59 +0000 (01:43 +0100)]
ieee1394: add quirk fix for Freecom HDD

According to http://bugzilla.kernel.org/show_bug.cgi?id=12206, Freecom
FireWire Hard Drive 1TB reports max_rom=2 but returns garbage if block
read requests are used to read the config ROM.  Force max_rom=0 to limit
them to quadlet read requests.

Reported-by: Christian Mueller <cm1@mumac.de>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
15 years agopowerpc/fsl-booke: Fix problem with _tlbil_va being interrupted
Kumar Gala [Sat, 13 Dec 2008 23:01:37 +0000 (17:01 -0600)]
powerpc/fsl-booke: Fix problem with _tlbil_va being interrupted

An example calling sequence which we did see:

copy_user_highpage -> kmap_atomic -> flush_tlb_page -> _tlbil_va

We got interrupted after setting up the MAS registers before the
tlbwe and the interrupt handler that caused the interrupt also did
a kmap_atomic (ide code) and thus on returning from the interrupt
the MAS registers no longer contained the proper values.

Since we dont save/restore MAS registers for normal interrupts we
need to disable interrupts in _tlbil_va to ensure atomicity.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
15 years agoMerge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/jwboyer/powerpc-4xx
Linus Torvalds [Sat, 13 Dec 2008 19:32:24 +0000 (11:32 -0800)]
Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/jwboyer/powerpc-4xx

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/jwboyer/powerpc-4xx:
  powerpc/40x: Add proper BOOTCFLAGS for cuboot-acadia

15 years agoMerge branch 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6
Linus Torvalds [Sat, 13 Dec 2008 19:32:04 +0000 (11:32 -0800)]
Merge branch 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6

* 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6:
  i2c-highlander: Trivial endian casting fixes
  i2c-pmcmsp: Fix endianness misannotation

15 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
Linus Torvalds [Sat, 13 Dec 2008 19:28:13 +0000 (11:28 -0800)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  Commands needing to be retried require a complete re-initialization.

15 years agoMerge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
Linus Torvalds [Sat, 13 Dec 2008 19:26:34 +0000 (11:26 -0800)]
Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  MIPS: IP32: Update defconfig
  MIPS: Add missing calls to plat_unmap_dma_mem.
  MIPS: Kconfig: Fix the arch-specific header path
  MIPS: Use EI/DI for MIPS R2.

15 years agoconsole ASCII glyph 1:1 mapping
Ingo Brueckl [Wed, 10 Dec 2008 22:35:00 +0000 (23:35 +0100)]
console ASCII glyph 1:1 mapping

For the console, there is a 1:1 mapping of glyphs which cannot be found
in the current font.  This seems to be meant as a kind of 'emergency
fallback' for fonts without unicode mapping which otherwise would
display nothing readable on the screen.

At the moment it affects all chars for which no substitution character
is defined.  In particular this means that for all chars (>= 128) where
there is no iso88591-1/unicode character (e.g.  control character area)
you'll get the very strange 1:1 mapping of the (cp437) graphics card
glyphs.

I'm pretty sure that the 1:1 mapping should only affect strict ASCII
code characters, i.e.  chars < 128.

The patch limits the mapping as it probably was meant anyway.

Signed-off-by: Ingo Brueckl <ib@wupperonline.de>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Cc: Egmont Koblinger <egmont@uhulinux.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agounicode table for cp437
Ingo Brueckl [Wed, 10 Dec 2008 22:34:00 +0000 (23:34 +0100)]
unicode table for cp437

There is a major bug in the cp437 to unicode translation table.  Char
0x7c is mapped to U+00a5 which is the Yen sign and wrong.  The right
mapping is U+00a6 (broken bar).

Furthermore, a mapping for U+00b4 (a widely used character) is missing
even though easily possible.

The patch fixes these, as well as it provides a few other useful
mappings.

The changes are as follows:

  0x0f (enhancement) enables a sort of currency symbol
  0x27 (bug) enables a sort of acute accent which is a widely used character
  0x44 (enhancement) enables a sort of icelandic capital letter eth
  0x7c (major bug) corrects mapping
  0xeb (enhancement) enables a sort of icelandic small letter eth
  0xee (enhancement) enables a sort of math 'element of'

Signed-off-by: Ingo Brueckl <ib@wupperonline.de>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMerge ../linux-2.6-x86
Rusty Russell [Sat, 13 Dec 2008 11:25:51 +0000 (21:55 +1030)]
Merge ../linux-2.6-x86

Conflicts:

arch/x86/kernel/io_apic.c
kernel/sched.c
kernel/sched_stats.h

15 years agocpumask: Use all NR_CPUS bits unless CONFIG_CPUMASK_OFFSTACK
Rusty Russell [Sat, 13 Dec 2008 10:50:28 +0000 (21:20 +1030)]
cpumask: Use all NR_CPUS bits unless CONFIG_CPUMASK_OFFSTACK

Impact: futureproof as we convert more code to new APIs

The old cpumask operators treat all NR_CPUS bits as relevent, the new
ones use nr_cpumask_bits.  For large NR_CPUS and small nr_cpu_ids, this
makes a difference.

However, mixing the two can cause problems with undefined bits.  An
arch which sets CONFIG_CPUMASK_OFFSTACK should have converted across
to the new operators, so it's safe in that case.

(Thanks to Stephen Rothwell for bisecting the initial unused-bits bug,
and Mike Travis for this solution).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Mike Travis <travis@sgi.com>
15 years agocpumask: Introduce cpumask_of_{node,pcibus} to replace {node,pcibus}_to_cpumask
Rusty Russell [Sat, 13 Dec 2008 10:50:27 +0000 (21:20 +1030)]
cpumask: Introduce cpumask_of_{node,pcibus} to replace {node,pcibus}_to_cpumask

Impact: New APIs

The old node_to_cpumask/node_to_pcibus returned a cpumask_t: these
return a pointer to a struct cpumask.  Part of removing cpumasks from
the stack.

This defines them in the generic non-NUMA case.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Richard Henderson <rth@twiddle.net>
15 years agocpumask: Add CONFIG_CPUMASK_OFFSTACK
Rusty Russell [Sat, 13 Dec 2008 10:50:27 +0000 (21:20 +1030)]
cpumask: Add CONFIG_CPUMASK_OFFSTACK

Impact: Add config option to enable code in cpumask.h

Currently it can be set if DEBUG_PER_CPU_MAPS, or set specifically by
an arch.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
15 years agocpumask: convert struct clock_event_device to cpumask pointers.
Rusty Russell [Sat, 13 Dec 2008 10:50:26 +0000 (21:20 +1030)]
cpumask: convert struct clock_event_device to cpumask pointers.

Impact: change calling convention of existing clock_event APIs

struct clock_event_timer's cpumask field gets changed to take pointer,
as does the ->broadcast function.

Another single-patch change.  For safety, we BUG_ON() in
clockevents_register_device() if it's not set.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Ingo Molnar <mingo@elte.hu>
15 years agocpumask: make irq_set_affinity() take a const struct cpumask
Rusty Russell [Sat, 13 Dec 2008 10:50:26 +0000 (21:20 +1030)]
cpumask: make irq_set_affinity() take a const struct cpumask

Impact: change existing irq_chip API

Not much point with gentle transition here: the struct irq_chip's
setaffinity method signature needs to change.

Fortunately, not widely used code, but hits a few architectures.

Note: In irq_select_affinity() I save a temporary in by mangling
irq_desc[irq].affinity directly.  Ingo, does this break anything?

(Folded in fix from KOSAKI Motohiro)

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Reviewed-by: Grant Grundler <grundler@parisc-linux.org>
Acked-by: Ingo Molnar <mingo@redhat.com>
Cc: ralf@linux-mips.org
Cc: grundler@parisc-linux.org
Cc: jeremy@xensource.com
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
15 years agocpumask: change cpumask_scnprintf, cpumask_parse_user, cpulist_parse, and cpulist_scn...
Rusty Russell [Sat, 13 Dec 2008 10:50:25 +0000 (21:20 +1030)]
cpumask: change cpumask_scnprintf, cpumask_parse_user, cpulist_parse, and cpulist_scnprintf to take pointers.

Impact: change calling convention of existing cpumask APIs

Most cpumask functions started with cpus_: these have been replaced by
cpumask_ ones which take struct cpumask pointers as expected.

These four functions don't have good replacement names; fortunately
they're rarely used, so we just change them over.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: paulus@samba.org
Cc: mingo@redhat.com
Cc: tony.luck@intel.com
Cc: ralf@linux-mips.org
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: cl@linux-foundation.org
Cc: srostedt@redhat.com
15 years agocpumask: centralize cpu_online_map and cpu_possible_map
Rusty Russell [Sat, 13 Dec 2008 10:49:41 +0000 (21:19 +1030)]
cpumask: centralize cpu_online_map and cpu_possible_map

Impact: cleanup

Each SMP arch defines these themselves.  Move them to a central
location.

Twists:
1) Some archs (m32, parisc, s390) set possible_map to all 1, so we add a
   CONFIG_INIT_ALL_POSSIBLE for this rather than break them.

2) mips and sparc32 '#define cpu_possible_map phys_cpu_present_map'.
   Those archs simply have phys_cpu_present_map replaced everywhere.

3) Alpha defined cpu_possible_map to cpu_present_map; this is tricky
   so I just manipulate them both in sync.

4) IA64, cris and m32r have gratuitous 'extern cpumask_t cpu_possible_map'
   declarations.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Reviewed-by: Grant Grundler <grundler@parisc-linux.org>
Tested-by: Tony Luck <tony.luck@intel.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: Mike Travis <travis@sgi.com>
Cc: ink@jurassic.park.msu.ru
Cc: rmk@arm.linux.org.uk
Cc: starvik@axis.com
Cc: tony.luck@intel.com
Cc: takata@linux-m32r.org
Cc: ralf@linux-mips.org
Cc: grundler@parisc-linux.org
Cc: paulus@samba.org
Cc: schwidefsky@de.ibm.com
Cc: lethal@linux-sh.org
Cc: wli@holomorphy.com
Cc: davem@davemloft.net
Cc: jdike@addtoit.com
Cc: mingo@redhat.com
15 years agoMIPS: IP32: Update defconfig
David Daney [Wed, 10 Dec 2008 23:27:13 +0000 (15:27 -0800)]
MIPS: IP32: Update defconfig

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
15 years agoMIPS: Add missing calls to plat_unmap_dma_mem.
David Daney [Thu, 11 Dec 2008 02:14:45 +0000 (18:14 -0800)]
MIPS: Add missing calls to plat_unmap_dma_mem.

dma_free_noncoherent() and dma_free_coherent() are missing calls to
plat_unmap_dma_mem().  This patch adds them.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
15 years agoMIPS: Kconfig: Fix the arch-specific header path
Dmitri Vorobiev [Wed, 10 Dec 2008 20:38:36 +0000 (22:38 +0200)]
MIPS: Kconfig: Fix the arch-specific header path

The header path in the help text for the RUNTIME_DEBUG config option is
obsolete and needs to be updated to match the new location of
architecture-specific header files. While at it, fix the spelling mistake.

Signed-off-by: Dmitri Vorobiev <dmitri.vorobiev@movial.fi>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
15 years agoMIPS: Use EI/DI for MIPS R2.
David Daney [Wed, 10 Dec 2008 16:37:25 +0000 (08:37 -0800)]
MIPS: Use EI/DI for MIPS R2.

For MIPS R2, use the EI and DI instructions to enable and disable
interrupts.

Signed-off-by: Tomaso Paoletti <tpaoletti@caviumnetworks.com>
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
15 years agoCommands needing to be retried require a complete re-initialization.
Alan D. Brunelle [Tue, 9 Dec 2008 14:52:15 +0000 (15:52 +0100)]
Commands needing to be retried require a complete re-initialization.

The test-unit-ready portion of this patch was causing boots to fail on
my test machine (as in http://lkml.org/lkml/2008/12/5/161). With this
patch in place, the system is booting reliably.

Mike Anderson found the same problem in the hp_hw_start_stop code,
and I applied the same solution in cdrom_read_cdda_bpc.

Signed-off-by: Alan D. Brunelle <alan.brunelle@hp.com>
Cc: Mike Anderson <andmike@linux.vnet.ibm.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agoMerge branches 'irq/sparseirq', 'x86/quirks' and 'x86/reboot' into cpus4096
Ingo Molnar [Fri, 12 Dec 2008 12:49:17 +0000 (13:49 +0100)]
Merge branches 'irq/sparseirq', 'x86/quirks' and 'x86/reboot' into cpus4096

We merge the irq/sparseirq, x86/quirks and x86/reboot trees into the
cpus4096 tree because the io-apic changes in the sparseirq change
conflict with the cpumask changes in the cpumask tree, and we
want to resolve those.

15 years agoMerge branch 'sched/core' into cpus4096
Ingo Molnar [Fri, 12 Dec 2008 12:48:57 +0000 (13:48 +0100)]
Merge branch 'sched/core' into cpus4096

Conflicts:
include/linux/ftrace.h
kernel/sched.c

15 years agosched: add missing arch_update_cpu_topology() call
Heiko Carstens [Tue, 9 Dec 2008 17:49:51 +0000 (18:49 +0100)]
sched: add missing arch_update_cpu_topology() call

arch_reinit_sched_domains() used to call arch_update_cpu_topology()
via arch_init_sched_domains(). This call got lost with
e761b7725234276a802322549cee5255305a0930 ("cpu hotplug, sched: Introduce
cpu_active_map and redo sched domain managment (take 2)".

So we might end up with outdated and missing cpus in the cpu core
maps (architecture used to call arch_reinit_sched_domains if cpu
topology changed).

This adds a call to arch_update_cpu_topology in partition_sched_domains
which gets called whenever scheduling domains get updated. Which is
what is supposed to happen when cpu topology changes.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agosched: let arch_update_cpu_topology indicate if topology changed
Heiko Carstens [Tue, 9 Dec 2008 17:49:50 +0000 (18:49 +0100)]
sched: let arch_update_cpu_topology indicate if topology changed

Change arch_update_cpu_topology so it returns 1 if the cpu topology changed
and 0 if it didn't change. This will be useful for the next patch which adds
a call to this function in partition_sched_domains.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agoMerge branch 'tracing/fastboot' into cpus4096
Ingo Molnar [Fri, 12 Dec 2008 11:43:05 +0000 (12:43 +0100)]
Merge branch 'tracing/fastboot' into cpus4096

15 years agosparse irqs: add irqnr.h to the user headers list
Ingo Molnar [Fri, 12 Dec 2008 11:19:57 +0000 (12:19 +0100)]
sparse irqs: add irqnr.h to the user headers list

Impact: fix build error

/home/mingo/tip/usr/include/linux/random.h:11: included file
'linux/irqnr.h' is not exported

Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agosparse irqs: handle !GENIRQ platforms
Ingo Molnar [Fri, 12 Dec 2008 10:26:39 +0000 (11:26 +0100)]
sparse irqs: handle !GENIRQ platforms

Impact: build fix

fix:

 In file included from /home/mingo/tip/arch/m68k/amiga/amiints.c:39:
 /home/mingo/tip/include/linux/interrupt.h:21: error: expected identifier or '('
 /home/mingo/tip/arch/m68k/amiga/amiints.c: In function 'amiga_init_IRQ':

Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agoMerge commit 'v2.6.28-rc8' into sched/core
Ingo Molnar [Fri, 12 Dec 2008 09:29:35 +0000 (10:29 +0100)]
Merge commit 'v2.6.28-rc8' into sched/core

15 years agotracing/fastboot: include missing headers
Frederic Weisbecker [Thu, 11 Dec 2008 15:14:23 +0000 (16:14 +0100)]
tracing/fastboot: include missing headers

For now include/trace/boot.h doesn't need to include necessary headers
for its functions and structures because the files that include it already
do it.

But boot.h could be needed as well for further uses on other files.
So, this patch adds the necessary headers for future purposes...

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agotracing/fastboot: fix len of func buffer
Stephen Rothwell [Thu, 11 Dec 2008 15:10:08 +0000 (16:10 +0100)]
tracing/fastboot: fix len of func buffer

Impact: fix possible stack overrun

This is a port of a patch included in the mainline (KSYM_SYMBOL_LEN fixes).
The current func len is not large enough to contain the max symbol len, the
right size must be KSYM_SYMBOL_LEN.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agoMerge branches 'tracing/function-graph-tracer' and 'tracing/ring-buffer' into tracing...
Ingo Molnar [Fri, 12 Dec 2008 06:40:08 +0000 (07:40 +0100)]
Merge branches 'tracing/function-graph-tracer' and 'tracing/ring-buffer' into tracing/core

15 years agonetlabel: Compiler warning and NULL pointer dereference fix
Paul Moore [Fri, 12 Dec 2008 05:31:50 +0000 (21:31 -0800)]
netlabel: Compiler warning and NULL pointer dereference fix

Fix the two compiler warnings show below.  Thanks to Geert Uytterhoeven for
finding and reporting the problem.

 net/netlabel/netlabel_unlabeled.c:567: warning: 'entry' may be used
   uninitialized in this function
 net/netlabel/netlabel_unlabeled.c:629: warning: 'entry' may be used
   uninitialized in this function

Signed-off-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoe1000e: fix double release of mutex
Jeff Kirsher [Fri, 12 Dec 2008 05:28:11 +0000 (21:28 -0800)]
e1000e: fix double release of mutex

During a reset, releasing the swflag after it failed to be acquired would
cause a double unlock of the mutex.  Instead, test whether acquisition of
the swflag was successful and if not, do not release the swflag.  The reset
must still be done to bring the device to a quiescent state.

This resolves [BUG 12200] BUG: bad unlock balance detected! e1000e
http://bugzilla.kernel.org/show_bug.cgi?id=12200

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agopowerpc/40x: Add proper BOOTCFLAGS for cuboot-acadia
Josh Boyer [Tue, 25 Nov 2008 06:33:35 +0000 (06:33 +0000)]
powerpc/40x: Add proper BOOTCFLAGS for cuboot-acadia

The cuboot-acadia.c wrapper can cause assembler errors on some
toolchains due to the lack of the proper BOOTCFLAGS.  This adds
the proper flags for the file.

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
15 years agoi2c-highlander: Trivial endian casting fixes
Harvey Harrison [Thu, 11 Dec 2008 11:11:21 +0000 (12:11 +0100)]
i2c-highlander: Trivial endian casting fixes

Fixes sparse warnings:
drivers/i2c/busses/i2c-highlander.c:95:26: warning: incorrect type in argument 1 (different base types)
drivers/i2c/busses/i2c-highlander.c:95:26:    expected restricted __be16 const [usertype] *p
drivers/i2c/busses/i2c-highlander.c:95:26:    got unsigned short [usertype] *<noident>
drivers/i2c/busses/i2c-highlander.c:106:15: warning: incorrect type in assignment (different base types)
drivers/i2c/busses/i2c-highlander.c:106:15:    expected unsigned short [unsigned] [short] [usertype] <noident>
drivers/i2c/busses/i2c-highlander.c:106:15:    got restricted __be16

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Ben Dooks <ben-linux@fluff.org>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
15 years agoi2c-pmcmsp: Fix endianness misannotation
Harvey Harrison [Thu, 11 Dec 2008 11:11:20 +0000 (12:11 +0100)]
i2c-pmcmsp: Fix endianness misannotation

tmp is used as host-endian and is loaded from a be64, fix the cast and the
endian accessor used.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
15 years ago[ARM] 5341/2: there is no copy_page on nommu ARM
Nicolas Pitre [Tue, 9 Dec 2008 02:13:39 +0000 (03:13 +0100)]
[ARM] 5341/2: there is no copy_page on nommu ARM

... as it is defined with memcpy, therefore no copy_page symbol to
export.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
15 years agoRevert "radeonfb: accelerate imageblit and other improvements"
Linus Torvalds [Wed, 10 Dec 2008 17:26:17 +0000 (09:26 -0800)]
Revert "radeonfb: accelerate imageblit and other improvements"

This reverts commit b1ee26bab14886350ba12a5c10cbc0696ac679bf, along with
the "fixes" for it that all just caused problems:

 - c4c6fa9891f3d1bcaae4f39fb751d5302965b566 "radeonfb: fix problem with
   color expansion & alignment"

 - f3179748a157c21d44d929fd3779421ebfbeaa93 "radeonfb: Disable new color
   expand acceleration unless explicitely enabled"

because even when disabled, it breaks for people. See

http://bugzilla.kernel.org/show_bug.cgi?id=12191

for the latest example.

Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: Krzysztof Halasa <khc@pm.waw.pl>
Cc: James Cloos <cloos@jhcloos.com>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Cc: Jean-Luc Coulon <jean.luc.coulon@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoIA64: HP_SIMETH needs to depend upon NET
Alexander Beregalov [Wed, 10 Dec 2008 23:24:50 +0000 (15:24 -0800)]
IA64: HP_SIMETH needs to depend upon NET

From: Alexander Beregalov <a.beregalov@gmail.com>

Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoLinux 2.6.28-rc8
Linus Torvalds [Wed, 10 Dec 2008 23:11:51 +0000 (15:11 -0800)]
Linux 2.6.28-rc8

15 years agoMerge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Wed, 10 Dec 2008 22:41:06 +0000 (14:41 -0800)]
Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  sched: CPU remove deadlock fix