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72594 commits

Author SHA1 Message Date
Gerald Schaefer
9016083b7b s390/hugetlb: use direct TLB flushing for hugetlbfs pages
huge_ptep_get_and_clear() is either missing a TLB invalidation or
an mm->context.attach_count check. Since the attach_count logic was
introduced with normal ptes in mind, let's just use direct TLB
flushing for hugetlbfs pages.

Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2012-09-06 10:40:37 +02:00
Miklos Szeredi
bc6c83641e uml: fix compile error in deliver_alarm()
Fix the following compile error on UML.

  arch/um/os-Linux/time.c: In function 'deliver_alarm':
  arch/um/os-Linux/time.c:117:3: error: too few arguments to function 'alarm_handler'
  arch/um/os-Linux/internal.h:1:6: note: declared here

The error was introduced by commit d3c1cfcd ("um: pass siginfo to guest
process") in 3.6-rc1.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
CC: Martin Pärtel <martin.partel@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-09-05 19:40:59 -07:00
Laxman Dewangan
9394b80c35 regulator: tps6586x: add support for SYS rail
Device have SYS rail which is always ON. It is system power bus. LDO5
and LDO_RTC get powered through this rail internally. Add support for
this rail and make the LDO5/LDO_RTC supply by it. Update document
accordingly.

[swarren: Instantiate the sys regulator from board-harmony-power.c to
 avoid regression.]

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-09-06 07:57:00 +08:00
Tony Lindgren
6ab019b62e Some hwmod, clockdomain, am335x fixes against v3.6-rc4.
Test logs can be found here:
 
    http://www.pwsan.com/omap/testlogs/omap_fixes_a_3.6rc/20120904110254/
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Merge tag 'omap-fixes-a-for-3.6rc' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending into fixes

Some hwmod, clockdomain, am335x fixes against v3.6-rc4.

Test logs can be found here:

   http://www.pwsan.com/omap/testlogs/omap_fixes_a_3.6rc/20120904110254/
2012-09-05 10:09:31 -07:00
Tony Lindgren
580a7ce8fb Merge branch 'fixes-wakeupgen' into fixes 2012-09-05 10:06:08 -07:00
Alex Shi
ce7184bdbd xen: fix logical error in tlb flushing
While TLB_FLUSH_ALL gets passed as 'end' argument to
flush_tlb_others(), the Xen code was made to check its 'start'
parameter. That may give a incorrect op.cmd to MMUEXT_INVLPG_MULTI
instead of MMUEXT_TLB_FLUSH_MULTI. Then it causes some page can not
be flushed from TLB.

This patch fixed this issue.

Reported-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Alex Shi <alex.shi@intel.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
Tested-by: Yongjie Ren <yongjie.ren@intel.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2012-09-05 10:50:21 -04:00
Konrad Rzeszutek Wilk
593d0a3e9f Merge commit '4cb38750d49010ae72e718d46605ac9ba5a851b4' into stable/for-linus-3.6
* commit '4cb38750d49010ae72e718d46605ac9ba5a851b4': (6849 commits)
  bcma: fix invalid PMU chip control masks
  [libata] pata_cmd64x: whitespace cleanup
  libata-acpi: fix up for acpi_pm_device_sleep_state API
  sata_dwc_460ex: device tree may specify dma_channel
  ahci, trivial: fixed coding style issues related to braces
  ahci_platform: add hibernation callbacks
  libata-eh.c: local functions should not be exposed globally
  libata-transport.c: local functions should not be exposed globally
  sata_dwc_460ex: support hardreset
  ata: use module_pci_driver
  drivers/ata/pata_pcmcia.c: adjust suspicious bit operation
  pata_imx: Convert to clk_prepare_enable/clk_disable_unprepare
  ahci: Enable SB600 64bit DMA on MSI K9AGM2 (MS-7327) v2
  [libata] Prevent interface errors with Seagate FreeAgent GoFlex
  drivers/acpi/glue: revert accidental license-related 6b66d95895 bits
  libata-acpi: add missing inlines in libata.h
  i2c-omap: Add support for I2C_M_STOP message flag
  i2c: Fall back to emulated SMBus if the operation isn't supported natively
  i2c: Add SCCB support
  i2c-tiny-usb: Add support for the Robofuzz OSIF USB/I2C converter
  ...
2012-09-05 10:22:45 -04:00
Konrad Rzeszutek Wilk
50e900417b xen/p2m: Fix one-off error in checking the P2M tree directory.
We would traverse the full P2M top directory (from 0->MAX_DOMAIN_PAGES
inclusive) when trying to figure out whether we can re-use some of the
P2M middle leafs.

Which meant that if the kernel was compiled with MAX_DOMAIN_PAGES=512
we would try to use the 512th entry. Fortunately for us the p2m_top_index
has a check for this:

 BUG_ON(pfn >= MAX_P2M_PFN);

which we hit and saw this:

(XEN) domain_crash_sync called from entry.S
(XEN) Domain 0 (vcpu#0) crashed on cpu#0:
(XEN) ----[ Xen-4.1.2-OVM  x86_64  debug=n  Tainted:    C ]----
(XEN) CPU:    0
(XEN) RIP:    e033:[<ffffffff819cadeb>]
(XEN) RFLAGS: 0000000000000212   EM: 1   CONTEXT: pv guest
(XEN) rax: ffffffff81db5000   rbx: ffffffff81db4000   rcx: 0000000000000000
(XEN) rdx: 0000000000480211   rsi: 0000000000000000   rdi: ffffffff81db4000
(XEN) rbp: ffffffff81793db8   rsp: ffffffff81793d38   r8:  0000000008000000
(XEN) r9:  4000000000000000   r10: 0000000000000000   r11: ffffffff81db7000
(XEN) r12: 0000000000000ff8   r13: ffffffff81df1ff8   r14: ffffffff81db6000
(XEN) r15: 0000000000000ff8   cr0: 000000008005003b   cr4: 00000000000026f0
(XEN) cr3: 0000000661795000   cr2: 0000000000000000

Fixes-Oracle-Bug: 14570662
CC: stable@vger.kernel.org # only for v3.5
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2012-09-05 09:47:41 -04:00
Joe Millenbach
4454d32749 x86/kconfig: Remove outdated reference to Intel CPUs in CONFIG_SWIOTLB
Deleted the no longer valid example of which x86 CPUs lack a
hardware IOMMU, and moved the "If unsure..." statement to a new
line to follow the style of surrounding options.

Signed-off-by: Joe Millenbach <jmillenbach@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Cc: team-fjord@googlegroups.com
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Link: http://lkml.kernel.org/r/1346632700-29113-1-git-send-email-jmillenbach@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-09-05 11:05:01 +02:00
Mathias Krause
ae13b7b4e0 x86/iommu: Use NULL instead of plain 0 for __IOMMU_INIT
IOMMU_INIT_POST and IOMMU_INIT_POST_FINISH pass the plain value
0 instead of NULL to __IOMMU_INIT. Fix this and make sparse
happy by doing so.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Cc: Joerg Roedel <joerg.roedel@amd.com>
Link: http://lkml.kernel.org/r/1346621506-30857-8-git-send-email-minipli@googlemail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-09-05 10:52:26 +02:00
Mathias Krause
2b11afd1ab x86/iommu: Drop duplicate const in __IOMMU_INIT
It's redundant and makes sparse complain about it.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Cc: Joerg Roedel <joerg.roedel@amd.com>
Link: http://lkml.kernel.org/r/1346621506-30857-7-git-send-email-minipli@googlemail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-09-05 10:52:26 +02:00
Mathias Krause
5c7d03e99c x86/fpu/xsave: Keep __user annotation in casts
Don't remove the __user annotation of the fpstate pointer, but
drop the superfluous void * cast instead.

This fixes the following sparse warnings:

  xsave.c:135:15: warning: cast removes address space of expression
  xsave.c:135:15: warning: incorrect type in argument 1 (different address spaces)
  xsave.c:135:15:    expected void const volatile [noderef] <asn:1>*<noident>
  [...]

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Link: http://lkml.kernel.org/r/1346621506-30857-6-git-send-email-minipli@googlemail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-09-05 10:52:25 +02:00
Mathias Krause
04d695a682 x86/pci/probe_roms: Add missing __iomem annotation to pci_map_biosrom()
Stay in sync with the declaration and fix the corresponding
sparse warnings.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Link: http://lkml.kernel.org/r/1346621506-30857-5-git-send-email-minipli@googlemail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-09-05 10:52:25 +02:00
Mathias Krause
0ff8fef4ea x86/signals: ia32_signal.c: add __user casts to fix sparse warnings
Fix the following sparse warnings by adding appropriate __user
casts and annotations:

  ia32_signal.c:165:38: warning: incorrect type in argument 1 (different address spaces)
   ia32_signal.c:165:38:    expected struct sigaltstack const [noderef] [usertype] <asn:1>*<noident>
  ia32_signal.c:165:38:    got struct sigaltstack *
  [...]

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Link: http://lkml.kernel.org/r/1346621506-30857-4-git-send-email-minipli@googlemail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-09-05 10:52:24 +02:00
Mathias Krause
3d1334064f x86/vdso: Add __user annotation to VDSO32_SYMBOL
The address calculated by VDSO32_SYMBOL() is a pointer into
userland. Add the __user annotation to fix related sparse
warnings in its users.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Cc: Andy Lutomirski <luto@MIT.EDU>
Link: http://lkml.kernel.org/r/1346621506-30857-3-git-send-email-minipli@googlemail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-09-05 10:52:23 +02:00
Mathias Krause
f00026276a x86: Fix __user annotations in asm/sys_ia32.h
Fix the following sparse warnings:

  sys_ia32.c:293:38: warning: incorrect type in argument 2 (different address spaces)
  sys_ia32.c:293:38:    expected unsigned int [noderef] [usertype] <asn:1>*stat_addr
  sys_ia32.c:293:38:    got unsigned int *stat_addr

Ironically, sys_ia32.h was introduced to fix sparse warnings but
missed that one.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Link: http://lkml.kernel.org/r/1346621506-30857-2-git-send-email-minipli@googlemail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-09-05 10:52:23 +02:00
Josh Triplett
c206b9dcb1 x86/Kconfig: Turn off DEBUG_NX_TEST module in defconfigs
The x86 defconfigs include exactly one module: test_nx.ko, a
special-purpose module which just exists to do evil things like
executing code off the stack to see if the kernel has enabled NX
support.  Anyone who actually uses that module can easily enable
it themselves, but the vast majority of kernel builds don't need
it; disable it by default.

Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Link: http://lkml.kernel.org/r/e72faf875e1172fb1cbec5e6d3cd4122df508a97.1346649518.git.josh@joshtriplett.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-09-05 10:43:12 +02:00
Josh Triplett
be2f328d86 x86/Kconfig: Turn off CONFIG_BLK_DEV_RAM
The vast majority of systems either use initramfs or mount a
root filesystem directly from the kernel.  Distros have
defaulted to initramfs for years.  Only highly specialized
systems would use an actual filesystem-image initrd at this
point, and such systems don't rely on defconfig anyway.  Drop
initrd support (and specifically RAM block device support) from
the defconfigs.

Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/2521e983a63595cd7a331236d929577660f89c72.1346649518.git.josh@joshtriplett.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-09-05 10:43:11 +02:00
Josh Triplett
b92f885f31 x86/Kconfig: Disable CONFIG_CRC_T10DIF in defconfigs
CONFIG_CRC_T10DIF explicitly states that it exists only for use
by out-of-tree modules; anything in-kernel that needs it selects
it.  Thus, compile it out by default.

Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/3aaff7a0af1320427952d411a21b8ded29747a1f.1346649518.git.josh@joshtriplett.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-09-05 10:43:11 +02:00
Josh Triplett
3fe2cb8f9e x86/Kconfig: Switch to ext4 in defconfigs
The current x86 and x86-64 defconfigs do not enable ext4, which
most current distributions default to.  Switch the defconfigs to
ext4, so they will boot on current systems without additional
configuration.

Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/bd8a359506b7e1287c680823de16d67608ec52fe.1346649518.git.josh@joshtriplett.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-09-05 10:43:10 +02:00
Josh Triplett
406eae5d70 x86/Kconfig: Update defconfigs to current results of "make savedefconfig"
The x86 defconfigs have become somewhat out of date compared to
the current result of "make savedefconfig".  Update them to the
current output, as a prelude to further defconfig changes, to
avoid unrelated noise in those further changes.

Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/80c8a5fbeaf6cdb72fb78a016013427efee52668.1346649518.git.josh@joshtriplett.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-09-05 10:43:09 +02:00
Ingo Molnar
bab57e994d Merge branch 'core' of git://git.kernel.org/pub/scm/linux/kernel/git/rric/oprofile into perf/core
Pull oprofile fixes from Robert Richter.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-09-05 08:29:56 +02:00
Ingo Molnar
e4390fa632 Merge branch 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/rric/oprofile into perf/urgent
Pull s390 oprofile fix from Robert Richter.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-09-05 08:29:12 +02:00
Benjamin Herrenschmidt
636802ef96 powerpc: Don't use __put_user() in patch_instruction
patch_instruction() can be called very early on ppc32, when the kernel
isn't yet running at it's linked address. That can cause the !
is_kernel_addr() test in __put_user() to trip and call might_sleep()
which is very bad at that point during boot.

Use a lower level function instead for now, at least until we get to
rework ppc32 boot process to do the code patching later, like ppc64
does.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-09-05 16:05:23 +10:00
Paul Mackerras
9fb1b36ca1 powerpc: Make sure IPI handlers see data written by IPI senders
We have been observing hangs, both of KVM guest vcpu tasks and more
generally, where a process that is woken doesn't properly wake up and
continue to run, but instead sticks in TASK_WAKING state.  This
happens because the update of rq->wake_list in ttwu_queue_remote()
is not ordered with the update of ipi_message in
smp_muxed_ipi_message_pass(), and the reading of rq->wake_list in
scheduler_ipi() is not ordered with the reading of ipi_message in
smp_ipi_demux().  Thus it is possible for the IPI receiver not to see
the updated rq->wake_list and therefore conclude that there is nothing
for it to do.

In order to make sure that anything done before smp_send_reschedule()
is ordered before anything done in the resulting call to scheduler_ipi(),
this adds barriers in smp_muxed_message_pass() and smp_ipi_demux().
The barrier in smp_muxed_message_pass() is a full barrier to ensure that
there is a full ordering between the smp_send_reschedule() caller and
scheduler_ipi().  In smp_ipi_demux(), we use xchg() rather than
xchg_local() because xchg() includes release and acquire barriers.
Using xchg() rather than xchg_local() makes sense given that
ipi_message is not just accessed locally.

This moves the barrier between setting the message and calling the
cause_ipi() function into the individual cause_ipi implementations.
Most of them -- those that used outb, out_8 or similar -- already had
a full barrier because out_8 etc. include a sync before the MMIO
store.  This adds an explicit barrier in the two remaining cases.

These changes made no measurable difference to the speed of IPIs as
measured using a simple ping-pong latency test across two CPUs on
different cores of a POWER7 machine.

The analysis of the reason why processes were not waking up properly
is due to Milton Miller.

Cc: stable@vger.kernel.org # v3.0+
Reported-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-09-05 16:05:22 +10:00
Anton Blanchard
714332858b powerpc: Restore correct DSCR in context switch
During a context switch we always restore the per thread DSCR value.
If we aren't doing explicit DSCR management
(ie thread.dscr_inherit == 0) and the default DSCR changed while
the process has been sleeping we end up with the wrong value.

Check thread.dscr_inherit and select the default DSCR or per thread
DSCR as required.

This was found with the following test case, when running with
more threads than CPUs (ie forcing context switching):

http://ozlabs.org/~anton/junkcode/dscr_default_test.c

With the four patches applied I can run a combination of all
test cases successfully at the same time:

http://ozlabs.org/~anton/junkcode/dscr_default_test.c
http://ozlabs.org/~anton/junkcode/dscr_explicit_test.c
http://ozlabs.org/~anton/junkcode/dscr_inherit_test.c

Signed-off-by: Anton Blanchard <anton@samba.org>
Cc: <stable@kernel.org> # 3.0+
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-09-05 16:05:22 +10:00
Anton Blanchard
1021cb268b powerpc: Fix DSCR inheritance in copy_thread()
If the default DSCR is non zero we set thread.dscr_inherit in
copy_thread() meaning the new thread and all its children will ignore
future updates to the default DSCR. This is not intended and is
a change in behaviour that a number of our users have hit.

We just need to inherit thread.dscr and thread.dscr_inherit from
the parent which ends up being much simpler.

This was found with the following test case:

http://ozlabs.org/~anton/junkcode/dscr_default_test.c

Signed-off-by: Anton Blanchard <anton@samba.org>
Cc: <stable@kernel.org> # 3.0+
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-09-05 16:05:21 +10:00
Anton Blanchard
00ca0de02f powerpc: Keep thread.dscr and thread.dscr_inherit in sync
When we update the DSCR either via emulation of mtspr(DSCR) or via
a change to dscr_default in sysfs we don't update thread.dscr.
We will eventually update it at context switch time but there is
a period where thread.dscr is incorrect.

If we fork at this point we will copy the old value of thread.dscr
into the child. To avoid this, always keep thread.dscr in sync with
reality.

This issue was found with the following testcase:

http://ozlabs.org/~anton/junkcode/dscr_inherit_test.c

Signed-off-by: Anton Blanchard <anton@samba.org>
Cc: <stable@kernel.org> # 3.0+
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-09-05 16:05:21 +10:00
Anton Blanchard
1b6ca2a6fe powerpc: Update DSCR on all CPUs when writing sysfs dscr_default
Writing to dscr_default in sysfs doesn't actually change the DSCR -
we rely on a context switch on each CPU to do the work. There is no
guarantee we will get a context switch in a reasonable amount of time
so fire off an IPI to force an immediate change.

This issue was found with the following test case:

http://ozlabs.org/~anton/junkcode/dscr_explicit_test.c

Signed-off-by: Anton Blanchard <anton@samba.org>
Cc: <stable@kernel.org> # 3.0+
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-09-05 16:05:20 +10:00
Paul Mackerras
375f561a41 powerpc/powernv: Always go into nap mode when CPU is offline
The CPU hotplug code for the powernv platform currently only puts
offline CPUs into nap mode if the powersave_nap variable is set.
However, HV-style KVM on this platform requires secondary CPU threads
to be offline and in nap mode.  Since we know nap mode works just
fine on all POWER7 machines, and the only machines that support the
powernv platform are POWER7 machines, this changes the code to
always put offline CPUs into nap mode, regardless of powersave_nap.
Powersave_nap still controls whether or not CPUs go into nap mode
when idle, as before.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-09-05 16:05:20 +10:00
Paul Mackerras
dabe859ec6 powerpc: Give hypervisor decrementer interrupts their own handler
At the moment the handler for hypervisor decrementer interrupts is
the same as for decrementer interrupts, i.e. timer_interrupt().
This is bogus; if we ever do get a hypervisor decrementer interrupt
it won't have anything to do with the next timer event.  In fact
the only time we get hypervisor decrementer interrupts is when one
is left pending on exit from a KVM guest.

When we get a hypervisor decrementer interrupt we don't need to do
anything special to clear it, since they are edge-triggered on the
transition of HDEC from 0 to -1.  Thus this adds an empty handler
function for them.  We don't need to have them masked when interrupts
are soft-disabled, so we use STD_EXCEPTION_HV instead of
MASKABLE_EXCEPTION_HV.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-09-05 16:05:19 +10:00
Jesse Larrew
79c5fcebfe powerpc/vphn: Fix arch_update_cpu_topology() return value
arch_update_cpu_topology() should only return 1 when the topology has
actually changed, and should return 0 otherwise.

This patch fixes a potential bug where rebuild_sched_domains() would
reinitialize the sched domains even when the topology hasn't changed.

Signed-off-by: Jesse Larrew <jlarrew@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-09-05 16:05:19 +10:00
Linus Walleij
e829c66745 ARM: gemini: fix the gemini build
Test-compiling obscure machines I notice that the gemini (which
by the way lacks a defconfig) is broken since some time back.
Adding a simple missing include makes it build again.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
2012-09-04 22:17:34 -07:00
Olof Johansson
f81a3a1f68 Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into fixes
Two regression fixes and one boot-loader compatibility fix from Simon Horman.

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  ARM: shmobile: armadillo800eva: enable rw rootfs mount
  ARM: shmobile: mackerel: fixup usb module order
  ARM: shmobile: armadillo800eva: fixup: sound card detection order
2012-09-04 21:41:35 -07:00
Tony Lindgren
e534e871a9 ARM: OMAP4: Fix array size for irq_target_cpu
If NR_IRQS is less than MAX_IRQS, we end up writing past the
irq_target_cpu array in omap_wakeupgen_init():

/* Associate all the IRQs to boot CPU like GIC init does. */
for (i = 0; i < max_irqs; i++)
	irq_target_cpu[i] = boot_cpu;

This can happen if SPARSE_IRQ is enabled as by default NR_IRQS is
set to 16. Without this patch we're overwriting other data during
the boot.

Looks like a similar fix was posted by Benoit Cousson earlier
as "ARM: OMAP2+: wakeupgen: Fix wrong array size for irq_target_cpu"
but was lost.

Cc: stable@vger.kernel.org
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-09-04 17:22:45 -07:00
Stephane Eranian
3ec18cd8b8 perf/x86: Enable Intel Cedarview Atom suppport
This patch enables perf_events support for Intel Cedarview
Atom (model 54) processors. Support includes PEBS and LBR.
Tested on my Atom N2600 netbook.

Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20120820092421.GA11284@quad
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-09-04 17:29:23 +02:00
Jamie Iles
749c59fd15 KVM: PIC: fix use of uninitialised variable.
Commit aea218f3cb (KVM: PIC: call ack notifiers for irqs that are
dropped form irr) used an uninitialised variable to track whether an
appropriate apic had been found.  This could result in calling the ack
notifier incorrectly.

Cc: Gleb Natapov <gleb@redhat.com>
Cc: Avi Kivity <avi@redhat.com>
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2012-09-04 15:44:42 +03:00
Ingo Molnar
59f979455d Merge branch 'sched/urgent' into sched/core
Merge in the current fixes branch, we are going to apply dependent patches.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-09-04 14:31:00 +02:00
Paul Walmsley
8a94febc21 Merge branches 'clkdev_fixes_3.6rc', 'clkdm_fixes_3.6rc' and 'hwmod_data_fixes_a_3.6rc' into omap_fixes_a_3.6rc 2012-09-03 11:52:02 -06:00
Tero Kristo
b360124ea0 ARM: OMAP4: hwmod data: temporarily comment out data for the sl2if IP block
The OMAP4 sl2if IP block requires some special programming for it to
enter idle. Without this programming, it will prevent the rest of
the chip from entering full chip idle.

This patch comments out the IP block data.

Later, once the appropriate support is available, this patch can be
reverted.

Cc: Paul Walmsley <paul@pwsan.com>
Cc: Benoît Cousson <b-cousson@ti.com>
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2012-09-03 11:50:53 -06:00
Misael Lopez Cruz
471a009b6d ARM: OMAP: hwmod code: Disable module when hwmod enable fails
Clock and module mode are explictly enable when hwmod is enabled. But if
the hwmod doesn't get ready on time, clocks are disabled but module is left
enabled.

Signed-off-by: Misael Lopez Cruz <misael.lopez@ti.com>
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Benoit Cousson <b-cousson@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2012-09-03 11:50:52 -06:00
Tero Kristo
ed733619d8 ARM: OMAP3: hwmod data: fix iva2 reset info
IVA2 hwmod resets were missing the status bit offsets. Also, as the
hwmod itself didn't have prcm info at all, resetting iva hwmod was
accessing some bogus memory addresses. Added both infos to fix this.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2012-09-03 11:50:52 -06:00
Paul Walmsley
bfb7dd25fc ARM: OMAP3xxx: clockdomain: fix software supervised wakeup/sleep
Commit 4da71ae6 ("OMAP: clockdomain: Arch specific funcs for
clkdm_clk_enable/disable") called the OMAP2xxx-specific functions for
clockdomain wakeup and sleep.  This would probably have broken
software-supervised clockdomain wakeup and sleep on OMAP3.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Rajendra Nayak <rnayak@ti.com>
Cc: Jon Hunter <jon-hunter@ti.com>
Acked-by: Rajendra Nayak <rnayak@ti.com>
2012-09-03 11:50:43 -06:00
Vaibhav Hiremath
5776501390 ARM: OMAP2+: am33xx: Fix the timer fck clock naming convention
With commit ae6df418a2
Sub: ARM: OMAP2+: dmtimer: cleanup fclk usage)
The Timer functional clock naming convention has changed from
gptX_fck => timerXfck, and so as the timer init function
in mach-omap2/timer.c.
OMAP4 clocktree also has changed accordingly.

AM33xx Clock Tree has been merged during rc3-4 timeframe,
before above commit got merged, so similar change is required
for AM33xx as well (Change the gptX_fck => timerX_fck).

Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2012-09-03 11:50:36 -06:00
Gerald Schaefer
d5feaea364 s390/mm: fix deadlock in unmap_hugepage_range()
git commit cd2934a3 moved the flush_tlb_range() within
__unmap_hugepage_range() inside the mm->page_table_lock, which
triggered a deadlock in s390 tlb flushing code. __tlb_flush_mm_cond()
also tries to acquire the mm->page_table_lock, but that is not needed
because all callers already have mm->mmap_sem or mm->page_table_lock,
so it can be safely removed to fix the deadlock.

Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2012-09-03 11:14:06 +02:00
Kuninori Morimoto
28e515878f ARM: shmobile: armadillo800eva: enable rw rootfs mount
armadillo800eva default boot loader is "hermit",
and it's tag->u.core.flags has flag when kernel boots.
Because of this, ${LINUX}/arch/arm/kernel/setup.c :: parse_tag_core()
didn't remove MS_RDONLY flag from root_mountflags.
Thus, the rootfs is mounted as "readonly".
This patch adds "rw" kernel parameter,
and enable read/write mounts for rootfs

Cc: Masahiro Nakai <nakai@atmark-techno.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
2012-09-03 17:31:34 +09:00
Olof Johansson
3729d4a41d Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into fixes
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  ARM: shmobile: marzen: fixup smsc911x id for regulator
2012-09-02 08:22:58 -07:00
Olof Johansson
3800bd392f Merge branch 'fixes-for-v3.6-v2' of git://git.infradead.org/users/jcooper/linux into fixes
* 'fixes-for-v3.6-v2' of git://git.infradead.org/users/jcooper/linux:
  ARM: Kirkwood: Fix 'SZ_1M' undeclared here for db88f6281-bp-setup.c
2012-09-02 08:21:25 -07:00
Jon Mason
e09a841782 hpet: Remove unused PCI Vendor ID #define
HPET_ID_VENDOR_8086 is defined but never used.  It would be a redefine
of PCI_VENDOR_ID_INTEL if it was ever used.

Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-09-01 08:44:28 -07:00
Paul Bolle
801f9a83e9 powerpc: remove four unused files from .gitignore
Commit 4f3865fb57 ("zlib_inflate: Upgrade
library code to a recent version") removed infblock.c, infblock.h,
infcodes.c, and infcodes.h from the tree. Remove their entries in
powerpc's .gitignore file too.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-09-01 08:31:56 -07:00