Commit graph

534127 commits

Author SHA1 Message Date
Yingjoe Chen
c07b5fd026 ARM: 8359/1: correct secondary_startup_arm mode
secondary_startup_arm is used as ARM mode secondary start up function
when ther kernel is compiled in THUMB mode, however the label itself
is still in .thumb mode. readelf shows:

160979: c020a581   120 FUNC    GLOBAL DEFAULT    2 secondary_startup_arm

Make sure the label is in ARM mode as well.

Signed-off-by: Yingjoe Chen <yingjoe.chen@mediatek.com>
Tested-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-06-02 09:58:16 +01:00
Borislav Petkov
ee098e1aed x86/cpu: Trim model ID whitespace
We did try trimming whitespace surrounding the 'model name'
field in /proc/cpuinfo since reportedly some userspace uses it
in string comparisons and there were discrepancies:

  [thetango@prarit ~]# grep "^model name" /proc/cpuinfo | uniq -c | sed 's/\ /_/g'
  ______1_model_name      :_AMD_Opteron(TM)_Processor_6272
  _____63_model_name      :_AMD_Opteron(TM)_Processor_6272_________________

However, there were issues with overlapping buffers, string
sizes and non-byte-sized copies in the previous proposed
solutions; see Link tags below for the whole farce.

So, instead of diddling with this more, let's simply extend what
was there originally with trimming any present trailing
whitespace. Final result is really simple and obvious.

Testing with the most insane model IDs qemu can generate, looks
good:

  .model_id = "            My funny model ID CPU          ",
  ______4_model_name      :_My_funny_model_ID_CPU

  .model_id = "My funny model ID CPU          ",
  ______4_model_name      :_My_funny_model_ID_CPU

  .model_id = "            My funny model ID CPU",
  ______4_model_name      :_My_funny_model_ID_CPU

  .model_id = "            ",
  ______4_model_name      :__

  .model_id = "",
  ______4_model_name      :_15/02

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1432050210-32036-1-git-send-email-prarit@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-06-02 10:38:11 +02:00
Hans de Goede
ef3476e236 ARM: dts: sun8i: Add usb_clk node for a23/a33
Add an usb_clk node for a23/a33.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
2015-06-02 10:26:52 +02:00
Hans de Goede
ec80749dfd clk: sunxi: Add support for the usb-clk on sun8i a23 and a33 SoCs
The usb-clk on sun8i a23 and a33 SoCs is similar to the ones found
on sun6i-a31 SoCs but instead of a 3th phy the a23 / a33 have a hsic
interface which gets enabled by almost the same bits as used on
the a31 for the 3rd phy, but not exactly the same bits so we need
a new compatible for this.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
2015-06-02 10:24:39 +02:00
Gerd Hoffmann
16e3247da7 drm_vblank_get: don't WARN_ON in case vblanks are not initialized
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
2015-06-02 10:17:21 +02:00
Gerd Hoffmann
06b718c012 break kconfig dependency loop
After adding virtio-gpu I get this funky kconfig dependency loop.

scripts/kconfig/conf --oldconfig Kconfig
drivers/video/fbdev/Kconfig:5:error: recursive dependency detected!
drivers/video/fbdev/Kconfig:5:  symbol FB is selected by DRM_KMS_FB_HELPER
drivers/gpu/drm/Kconfig:34:     symbol DRM_KMS_FB_HELPER is selected by DRM_VIRTIO_GPU
drivers/gpu/drm/virtio/Kconfig:1:       symbol DRM_VIRTIO_GPU depends on VIRTIO
drivers/virtio/Kconfig:1:       symbol VIRTIO is selected by REMOTEPROC
drivers/remoteproc/Kconfig:4:   symbol REMOTEPROC is selected by OMAP_REMOTEPROC
drivers/remoteproc/Kconfig:12:  symbol OMAP_REMOTEPROC depends on OMAP_IOMMU
drivers/iommu/Kconfig:141:      symbol OMAP_IOMMU is selected by VIDEO_OMAP3
drivers/media/platform/Kconfig:96:      symbol VIDEO_OMAP3 depends on VIDEO_V4L2
drivers/media/v4l2-core/Kconfig:6:      symbol VIDEO_V4L2 depends on I2C
drivers/i2c/Kconfig:7:  symbol I2C is selected by FB_DDC
drivers/video/fbdev/Kconfig:59: symbol FB_DDC is selected by FB_CYBER2000_DDC
drivers/video/fbdev/Kconfig:374:        symbol FB_CYBER2000_DDC depends on FB_CYBER2000
drivers/video/fbdev/Kconfig:362:        symbol FB_CYBER2000 depends on FB

Making VIDEO_OMAP3 depend on OMAP_IOMMU instead of selecting it breaks the
loop, which looks like the best way to handle it to me.  Updated OMAP_IOMMU
help text accordingly.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-06-02 10:17:21 +02:00
Dave Airlie
3e8d222f2a Merge tag 'drm-intel-next-fixes-2015-05-29' of git://anongit.freedesktop.org/drm-intel into drm-next
Fixes for 4.2. Nothing too serious (given that it's still pre merge
window). With that it's off for 2 weeks of vacation for me and taking care
of 4.2 fixes for Jani.

* tag 'drm-intel-next-fixes-2015-05-29' of git://anongit.freedesktop.org/drm-intel:
  drm/i915: limit PPGTT size to 2GB in 32-bit platforms
  drm/i915: Another fbdev hack to avoid PSR on fbcon.
  drm/i915: Return the frontbuffer flip to enable intel_crtc_enable_planes.
  drm/i915: disable IPS while getting the sink CRCs
  drm/i915: Disable 12bpc hdmi for now
  drm/i915: Adjust sideband locking a bit for CHV/VLV
  drm/i915: s/dpio_lock/sb_lock/
  drm/i915: Kill intel_flush_primary_plane()
  drm/i915: Throw out WIP CHV power well definitions
  drm/i915: Use the default 600ns LDO programming sequence delay
  drm/i915: Remove unnecessary null check in execlists_context_unqueue
  drm/i915: Use spinlocks for checking when to waitboost
  drm/i915: Fix the confusing comment about the ioctl limits
  Revert "drm/i915: Force clean compilation with -Werror"
2015-06-02 18:10:50 +10:00
Jan Beulich
2f63b9db72 x86/asm/entry/64: Fold identical code paths
retint_kernel doesn't require %rcx to be pointing to thread info
(anymore?), and the code on the two alternative paths is - not
really surprisingly - identical.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/556C664F020000780007FB64@mail.emea.novell.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-06-02 10:10:09 +02:00
Jan Beulich
2bf557ea3f x86/asm/entry/64: Use negative immediates for stack adjustments
Doing so allows adjustments by 128 bytes (occurring for
REMOVE_PT_GPREGS_FROM_STACK 8 uses) to be expressed with a
single byte immediate.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/556C660F020000780007FB60@mail.emea.novell.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-06-02 10:10:09 +02:00
Vishnu Patekar
e01d9c7551 ARM: dts: sun8i: Add ET-Q8 A33 support
ET-Q8_A33 is A33 based cheap tablet in common Q8 format.

It has 512MB RAM, 4GB Nand, 7" Display, RDA5900P wifi, GSL1680 touch, etc.

Signed-off-by: Vishnu Patekar <vishnupatekar0510@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Tested-by: Chen-Yu Tsai <wens@csie.org>
2015-06-02 09:55:36 +02:00
Vishnu Patekar
35af8e4b38 ARM: dts: sun8i: Add sun8i-a33 dtsi
Add a dtsi file for use with a33 based boards based on the new
sun8i-a23-a33.dtsi file.

Signed-off-by: Vishnu Patekar <vishnupatekar0510@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Tested-by: Chen-Yu Tsai <wens@csie.org>
2015-06-02 09:54:52 +02:00
Vishnu Patekar
a0e9e9be6a ARM: dts: sun8i: Add sun8i-a23-a33 dtsi
Rename sun8i-a23.dtsi to sun8i-a23-a33.dtsi as the base dtsi for the A33
is 99% the same and add a new sun8i-a23.dtsi including sun8i-a23-a33.dtsi
and setting the few things not shared with the A33 (mbus-clk, pio
compatible and interrupts).

Signed-off-by: Vishnu Patekar <vishnupatekar0510@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Tested-by: Chen-Yu Tsai <wens@csie.org>
2015-06-02 09:53:49 +02:00
Andy Lutomirski
425be5679f x86/asm/irq: Stop relying on magic JMP behavior for early_idt_handlers
The early_idt_handlers asm code generates an array of entry
points spaced nine bytes apart.  It's not really clear from that
code or from the places that reference it what's going on, and
the code only works in the first place because GAS never
generates two-byte JMP instructions when jumping to global
labels.

Clean up the code to generate the correct array stride (member size)
explicitly. This should be considerably more robust against
screw-ups, as GAS will warn if a .fill directive has a negative
count.  Using '. =' to advance would have been even more robust
(it would generate an actual error if it tried to move
backwards), but it would pad with nulls, confusing anyone who
tries to disassemble the code.  The new scheme should be much
clearer to future readers.

While we're at it, improve the comments and rename the array and
common code.

Binutils may start relaxing jumps to non-weak labels.  If so,
this change will fix our build, and we may need to backport this
change.

Before, on x86_64:

  0000000000000000 <early_idt_handlers>:
     0:   6a 00                   pushq  $0x0
     2:   6a 00                   pushq  $0x0
     4:   e9 00 00 00 00          jmpq   9 <early_idt_handlers+0x9>
                          5: R_X86_64_PC32        early_idt_handler-0x4
  ...
    48:   66 90                   xchg   %ax,%ax
    4a:   6a 08                   pushq  $0x8
    4c:   e9 00 00 00 00          jmpq   51 <early_idt_handlers+0x51>
                          4d: R_X86_64_PC32       early_idt_handler-0x4
  ...
   117:   6a 00                   pushq  $0x0
   119:   6a 1f                   pushq  $0x1f
   11b:   e9 00 00 00 00          jmpq   120 <early_idt_handler>
                          11c: R_X86_64_PC32      early_idt_handler-0x4

After:

  0000000000000000 <early_idt_handler_array>:
     0:   6a 00                   pushq  $0x0
     2:   6a 00                   pushq  $0x0
     4:   e9 14 01 00 00          jmpq   11d <early_idt_handler_common>
  ...
    48:   6a 08                   pushq  $0x8
    4a:   e9 d1 00 00 00          jmpq   120 <early_idt_handler_common>
    4f:   cc                      int3
    50:   cc                      int3
  ...
   117:   6a 00                   pushq  $0x0
   119:   6a 1f                   pushq  $0x1f
   11b:   eb 03                   jmp    120 <early_idt_handler_common>
   11d:   cc                      int3
   11e:   cc                      int3
   11f:   cc                      int3

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Acked-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: Binutils <binutils@sourceware.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H.J. Lu <hjl.tools@gmail.com>
Cc: Jan Beulich <JBeulich@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/ac027962af343b0c599cbfcf50b945ad2ef3d7a8.1432336324.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-06-02 09:39:40 +02:00
David Hildenbrand
ea2cdd27dc KVM: s390: introduce KMSG_COMPONENT for kvm-s390
Let's remove "kvm-s390" from our printk messages and make use
of pr_fmt instead.

Also replace one printk() occurrence by a equivalent pr_warn
on the way.

Suggested-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-06-02 09:39:20 +02:00
David Hildenbrand
61a6df54b6 KVM: s390: call exit_sie() directly on vcpu block/request
Thinking about it, I can't find a real use case where we want
to block a VCPU and not kick it out of SIE. (except if we want
to do the same in batch for multiple VCPUs - but that's a micro
optimization)

So let's simply perform the exit_sie() calls directly when setting
the other magic block bits in the SIE.

Otherwise e.g. kvm_s390_set_tod_low() still has other VCPUs running
after that call, working with a wrong epoch.

Fixes: 27406cd50c ("KVM: s390: provide functions for blocking all CPUs")
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-06-02 09:38:01 +02:00
Alexandre Courbot
1c34d824bd drm/ttm: dma: Don't crash on memory in the vmalloc range
dma_alloc_coherent() can return memory in the vmalloc range.
virt_to_page() cannot handle such addresses and crashes. This
patch detects such cases and obtains the struct page * using
vmalloc_to_page() instead.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2015-06-02 17:24:49 +10:00
Michael Ellerman
989898b707 selftests/powerpc: Add install support to more powerpc tests
These tests were merged in parallel to the install support, update them
now to use it.

This also adds cross compile support for the VPHN test which was missing
it.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-06-02 16:54:49 +10:00
Cyril Bur
ea4d1a87e6 powerpc/configs: Replace pseries_le_defconfig with a Makefile target using merge_config
Rather than continuing to maintain a copy of pseries_defconfig with
CONFIG_CPU_LITTLE_ENDIAN enabled, use the generic merge_config script
and use an le.config to enable little endian on top of pseries_defconfig
without the need for a duplicated _defconfig file.

This method will require less maintenance in the future and will ensure
that both 'defconfigs' are always in sync.

It is worth noting that the seemingly more simple approach of:

  pseries_le_defconfig: pseries_defconfig
  	$(Q)$(MAKE) le.config

Will not work when building using O=builddir.

The obvious fix to that:

  pseries_le_defconfig:
  	$(Q)$(MAKE) -f $(srctree)/Makefile pseries_defconfig le.config

Also does not work. This is because if we have for example:

config FOO
	depends on CPU_BIG_ENDIAN
	select BAR

Then BAR will be enabled by the first call to kconfig (via
pseries_defconfig), and then will remain enabled after we merge
le.config, even though FOO will have been turned off.

The solution is to ensure to only invoke the kconfig logic once, after
we have merged all the config fragments. This ensures nothing is
select'ed on that should then be disabled by the later merged configs.
This is done through the explicit call to make olddefconfig

Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Reviewed-by: Samuel Mendoza-Jonas <sam.mj@au1.ibm.com>
[mpe: Massage change log, fix white space and use ARCH not SRCARCH]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-06-02 16:54:49 +10:00
Cyril Bur
a1c97df278 powerpc/configs: Merge pseries_defconfig and pseries_le_defconfig
These two configs should be identical with the exception of big or little
endian.

The big endian version has XMON_DEFAULT turned on while the little endian
has XMON_DEFAULT not set. It makes the most sense for defconfigs not to use
xmon by default, production systems should get back up as quickly as
possible, not sit in xmon.

In the event debugging is required, the option can be enabled or xmon=on
can be specified on commandline.

Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-06-02 16:54:48 +10:00
Jiang Liu
c1231a784a powerpc: Use irq_desc_get_xxx() to avoid redundant lookup of irq_desc
Use irq_desc_get_xxx() to avoid redundant lookup of irq_desc while we
already have a pointer to corresponding irq_desc.

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-06-02 16:54:44 +10:00
Joerg Roedel
2d0ec7a19b Revert "iommu/amd: Don't allocate with __GFP_ZERO in alloc_coherent"
This reverts commit 5fc872c732.

The DMA-API does not strictly require that the memory
returned by dma_alloc_coherent is zeroed out. For that
another function (dma_zalloc_coherent) should be used. But
all other x86 DMA-API implementation I checked zero out the
memory, so that some drivers rely on it and break when it is
not.

It seems the (driver-)world is not yet ready for this
change, so revert it.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
2015-06-02 08:46:32 +02:00
Ingo Molnar
6b33033c24 * Use idiomatic negative error values in efivar_create_sysfs_entry()
instead of returning '1' to indicate error - Dan Carpenter
 
  * New support to expose the EFI System Resource Tables in sysfs, which
    provides information for performing firmware updates - Peter Jones
 
  * Documentation cleanup in the EFI handover protocol section which
    falsely claimed that 'cmdline_size' needed to be filled out by the
    boot loader - Alex Smith
 
  * Align the order of SMBIOS tables in /sys/firmware/efi/systab to match
    the way that we do things for ACPI and add documentation to
    Documentation/ABI - Jean Delvare
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJVazVXAAoJEC84WcCNIz1VtVIP/1bwaRIw4eHBuunTY5ONZ9FP
 +uP0hyvUyGajES91PArqWpCeubn6hOAENT98+Tp+w81n3BPL3ZKKZB5jIbIpVqiF
 IOlpUud+MlpoHbyBleCVQHBG6+8pfE8ty3sC+gljjDhjaXnT1QJt9IdoEMpLnx7P
 pS0b9RzBVHJX1Y0ILMXstJKtNjyZfsxZ031XbjEuRfw7V2DtptkjRivR8EKDBKsG
 kNYcHxJJX/+DE9+pNPc3wrByBasQlBmrnZpwP3LIG12GRtoEZzbogHmFExeQZ+9k
 Gp3xuyOFx2Texl7bXM0artWbtTdzQj1ai8MoT5fQexy0UzO1TtlkdfaBkYKd3mtY
 AxvLPxCQpmGMV16T3QNaHEocFDAHSUvc2o85sQj+EdHhUcSkFybi4rSpDFf7HzO6
 x6xkt2Fu9d7GEpZG1O7V/v1uMNsp3tOBRMiMdruRq2Ui2UV8s616DqfjtoX/pkS3
 clNGrGZlUfDegKhkCuQqfUZY4jz/gioCEciY1S4auz/OX5jK0NTWUmAWzBnnWjsC
 M/RHbTbRbYGh1lTUSZQIdGSe5ejW/kBGMCeNh5ZmaxsZx057TYywSqLvo4PVoxON
 DTJUMwP2X/rzS2L3o3KVdjDTf3PTw7tQbieAjr5M4N7cd0I+BjRWBcQaCOnA0qN0
 SQwqdWeY/ZHcZftbgCAw
 =Twjn
 -----END PGP SIGNATURE-----

Merge tag 'efi-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mfleming/efi into x86/efi

Pull EFI changes from Matt Fleming:

  - Use idiomatic negative error values in efivar_create_sysfs_entry()
    instead of returning '1' to indicate error. (Dan Carpenter)

  - Implement new support to expose the EFI System Resource Tables in sysfs,
    which provides information for performing firmware updates. (Peter Jones)

  - Documentation cleanup in the EFI handover protocol section which
    falsely claimed that 'cmdline_size' needed to be filled out by the
    boot loader. (Alex Smith)

  - Align the order of SMBIOS tables in /sys/firmware/efi/systab to match
    the way that we do things for ACPI and add documentation to
    Documentation/ABI. (Jean Delvare)

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-06-02 08:38:11 +02:00
Ingo Molnar
085c789783 Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull RCU changes from Paul E. McKenney:

  - Initialization/Kconfig updates: hide most Kconfig options from unsuspecting users.
    There's now a single high level configuration option:

      *
      * RCU Subsystem
      *
      Make expert-level adjustments to RCU configuration (RCU_EXPERT) [N/y/?] (NEW)

    Which if answered in the negative, leaves us with a single interactive
    configuration option:

      Offload RCU callback processing from boot-selected CPUs (RCU_NOCB_CPU) [N/y/?] (NEW)

    All the rest of the RCU options are configured automatically.

  - Remove all uses of RCU-protected array indexes: replace the
    rcu_[access|dereference]_index_check() APIs with READ_ONCE() and rcu_lockdep_assert().

  - RCU CPU-hotplug cleanups.

  - Updates to Tiny RCU: a race fix and further code shrinkage.

  - RCU torture-testing updates: fixes, speedups, cleanups and
    documentation updates.

  - Miscellaneous fixes.

  - Documentation updates.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-06-02 08:18:34 +02:00
Ingo Molnar
f407a82586 Merge branch 'linus' into sched/core, to resolve conflict
Conflicts:
	arch/sparc/include/asm/topology_64.h

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-06-02 08:05:42 +02:00
Ingo Molnar
131484c8da x86/debug: Remove perpetually broken, unmaintainable dwarf annotations
So the dwarf2 annotations in low level assembly code have
become an increasing hindrance: unreadable, messy macros
mixed into some of the most security sensitive code paths
of the Linux kernel.

These debug info annotations don't even buy the upstream
kernel anything: dwarf driven stack unwinding has caused
problems in the past so it's out of tree, and the upstream
kernel only uses the much more robust framepointers based
stack unwinding method.

In addition to that there's a steady, slow bitrot going
on with these annotations, requiring frequent fixups.
There's no tooling and no functionality upstream that
keeps it correct.

So burn down the sick forest, allowing new, healthier growth:

   27 files changed, 350 insertions(+), 1101 deletions(-)

Someone who has the willingness and time to do this
properly can attempt to reintroduce dwarf debuginfo in x86
assembly code plus dwarf unwinding from first principles,
with the following conditions:

 - it should be maximally readable, and maximally low-key to
   'ordinary' code reading and maintenance.

 - find a build time method to insert dwarf annotations
   automatically in the most common cases, for pop/push
   instructions that manipulate the stack pointer. This could
   be done for example via a preprocessing step that just
   looks for common patterns - plus special annotations for
   the few cases where we want to depart from the default.
   We have hundreds of CFI annotations, so automating most of
   that makes sense.

 - it should come with build tooling checks that ensure that
   CFI annotations are sensible. We've seen such efforts from
   the framepointer side, and there's no reason it couldn't be
   done on the dwarf side.

Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jan Beulich <JBeulich@suse.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-06-02 07:57:48 +02:00
David S. Miller
dda922c831 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	drivers/net/phy/amd-xgbe-phy.c
	drivers/net/wireless/iwlwifi/Kconfig
	include/net/mac80211.h

iwlwifi/Kconfig and mac80211.h were both trivial overlapping
changes.

The drivers/net/phy/amd-xgbe-phy.c file got removed in 'net-next' and
the bug fix that happened on the 'net' side is already integrated
into the rest of the amd-xgbe driver.

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-01 22:51:30 -07:00
Nicholas Mc Guire
084861124d staging: unisys: use schedule_timeout_interruptible()
API consolidation with coccinelle found:
./drivers/staging/unisys/visorbus/periodic_work.c:196:3-19:
        consolidation with schedule_timeout_*() recommended

This is a 1:1 conversion with respect to schedule_timeout() to the
schedule_timeout_interruptible() helper only - so only an API
consolidation to improve readability. The hard coded timeout of 10
jiffies is HZ dependent which it should not be, so it is converted
with msecs_to_jiffies.

Patch was compile tested with x86_64_defconfig + CONFIG_STAGING=y,
CONFIG_UNISYSSPAR=y, CONFIG_UNISYS_VISORBUS=m

Patch is against 4.1-rc5 (localversion-next is -next-20150529)

Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-06-02 14:24:31 +09:00
Don Zickus
7726f81357 staging: unisys: Prepare vbus_hdr_info to be public
In order to remove bus_info, we need to migrate vbus_hdr_info into
the public namespace of visor_device.  Because the struct is private,
we use a void * to hide the contents.

As a result, we need to allocate vbus_hdr_info and manage it.

Also work around vbus_valid, as that variable will not be used
in the public namespace.

Signed-off-by: Don Zickus <dzickus@redhat.com>
Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-06-02 14:22:49 +09:00
Don Zickus
0274b5aec1 staging: unisys: Convert pending_msg_hdr to a pointer
In order for bus/dev_info structs to become public structs, one
element, pending_msg_hdr, needs to become opaque.  This is to keep
all the internals of the controlvm struct private to the bus layer.

So a simple conversion of embedding the pending_msg_hdr struct into
a pointer is done.  The rest of the patch is the fallout.

The rules are modified slightly.  Instead of relying on the 'id' to be
CONTROLVM_INVALID to indicate invalid, just use the pointer set to NULL.

In addition, because bus/dev_info can be NULL and we still need to send
a
response, pass pending_msg_hdr to all 'responders' instead of bus/

That change causes some fallout in the success case.  Instead of setting
state
bits and clearing info in the responders, do all that magic in the
responder
wrappers.

Signed-off-by: Don Zickus <dzickus@redhat.com>
Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-06-02 14:22:49 +09:00
Don Zickus
b32c4997c0 staging: unisys: Move channel creation up the stack
Instead of creating a channel struct to temporarily hold the channel
info and passing it through multiple functions until the device is
created, just create the channel from the start.

This allows us to remove the channel_info struct.

I noticed 'chan_info.addr_type' was not being used, so I just deleted it.

Signed-off-by: Don Zickus <dzickus@redhat.com>
Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-06-02 14:22:49 +09:00
Greg Kroah-Hartman
63d03e4773 staging: wilc1000: remove WILC_Uint8
Just use u8, as that's what you really want in a kernel driver.

Cc: Johnny Kim <johnny.kim@atmel.com>
Cc: Rachel Kim <rachel.kim@atmel.com>
Cc: Dean Lee <dean.lee@atmel.com>
Cc: Chris Park <chris.park@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-06-02 14:17:47 +09:00
Greg Kroah-Hartman
b1413b6084 staging: wilc100: remove WILC_NULL usage
Use the "real" NULL value, don't try to be cute and define your own
value for something that the compiler obviously supports.

Cc: Johnny Kim <johnny.kim@atmel.com>
Cc: Rachel Kim <rachel.kim@atmel.com>
Cc: Dean Lee <dean.lee@atmel.com>
Cc: Chris Park <chris.park@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-06-02 14:17:47 +09:00
Greg Kroah-Hartman
8e1d4e5cf2 staging: wilc1000: remove unused data types
There's some "custom" data types defined that are never used in the
driver, so remove them before we work on converting the rest to be
"standard" data types.

Cc: Johnny Kim <johnny.kim@atmel.com>
Cc: Rachel Kim <rachel.kim@atmel.com>
Cc: Dean Lee <dean.lee@atmel.com>
Cc: Chris Park <chris.park@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-06-02 14:17:47 +09:00
David S. Miller
db3397b9aa Merge branch 'cxgb4-next'
Hariprasad Shenai says:

====================
cxgb4/cxgb4vf: Adds support for Chelsio T6 adapter

This patch series adds the following:
Adds NIC driver support for T6 adapter
Adds vNIC driver support for T6 adapter

This patch series has been created against net-next tree and includes
patches on cxgb4 and cxgb4vf driver.

We have included all the maintainers of respective drivers. Kindly review
the change and let us know in case of any review comments.

Thanks

V2:
 Fixed compilation issue, when CHELSIO_T4_FCOE is set
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-01 22:14:35 -07:00
Hariprasad Shenai
41fc2e41d3 cxgb4vf: Adds SRIOV driver changes for T6 adapter
Adds vnic driver register related changes for T6 adapter

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-01 22:14:35 -07:00
Hariprasad Shenai
3ccc6cf74d cxgb4: Adds support for T6 adapter
Adds NIC driver related changes for T6 adapter. Register related
changes, MC related changes, VF related changes, doorbell related
changes, debugfs changes, etc

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-01 22:14:35 -07:00
Hariprasad Shenai
ab4b583b83 cxgb4: Add is_t6 macro and T6 register ranges
Adds new macro is_t6 and adds the register address range for T6 adapter

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-01 22:14:35 -07:00
Arnd Bergmann
0b85618f3a staging: wilc1000: update TODO list
I have crossed off one item on the list, but found a few others that should
not get lost, so here is an update of the wilc1000 list

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-06-02 13:55:40 +09:00
Arnd Bergmann
7a8fd84175 staging: wilc1000: fix compiler warnings
This avoids the remaining warnings that one gets on a normal
build: unused variables, unused labels, and invalid printk
format strings.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-06-02 13:46:05 +09:00
Arnd Bergmann
057d1e9793 staging: wilc1000: fix const cast warnings
The wilc1000 driver produces a lot of warnings about invalid
casts between const and non-const variables. This reworks
the code to avoid all those warnings, by marking variables
and function arguments const.

A lot of the types use WILC_Uint8, I change them to const u8
for style reasons, as I'm touching them anyway.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-06-02 13:46:05 +09:00
Arnd Bergmann
83383ea33c staging: wilc1000: remove semaphore wrapper
The various semaphore functions all directly translate into
sema_init(), down() and up(), so we can just remove the API.

This is a mostly automated conversion using simple sed scripts,
plus some manual changes to account for down() returning no
error.

As a positive side-effect, down() no longer hangs after
receiving a signal, as the original code did by looping around
down_interruptible.

The semaphores still need to be turned into mutexes as a
follow-up step.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-06-02 13:46:05 +09:00
Arnd Bergmann
e14af67d8f staging: wilc1000: remove EXPORT_SYMTAB
The EXPORT_SYMTAB symbol has not been used in Linux for a very
long time, the driver does not need to set it.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-06-02 13:46:05 +09:00
Arnd Bergmann
d074f29390 staging: wilc1000: remove unused OS abstraction features
All the remaining features from the OS abstraction layer
are not used at all in the driver, so we can just remove
the remaining references to them.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-06-02 13:46:05 +09:00
Arnd Bergmann
042f19c935 staging: wilc1000: clean up timer feature
The driver has a simple wrapper around timer_list, and an
optional but unused feature to make the timer periodic.

This removes support for the periodic timer and simplifies
the code around timers.

A follow-up should replace the remaining wrapper with
open-coded timers.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-06-02 13:45:22 +09:00
Arnd Bergmann
b96ff76a07 staging: wilc1000: clean up sleep wrapper
The driver has a simple wrapper around msleep, as well as
a more advanced sleep function that is unused. This removes
the unused code and the options to turn the feature on or
off.

A follow-up should rework the code to use msleep directly.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-06-02 13:45:22 +09:00
Arnd Bergmann
5f928b9567 staging: wilc1000: simplify semaphore wrapper
The driver has its own API for semaphores. This should
be replaced with mutexes and completions, but for the moment
we can start by removing the obviously unused parts.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-06-02 13:45:22 +09:00
Arnd Bergmann
71b13e5990 staging: wilc1000: remove unused memory handling code
The driver contains its own abstraction for memory allocation,
most of it unused. This removes the unused parts, but the
rest should also be removed later.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-06-02 13:45:21 +09:00
Arnd Bergmann
2ed3dc1d3c staging: wilc1000: simplify msgqueue code
The driver contains an abstraction for message queues, with
optional unused features, while the driver requires the main
feature.

This makes the msgqueue code unconditional as it's required
but removes the unused parts.

A later cleanup should remove the entire msgqueue code
and replace it with some normal kernel API.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-06-02 13:45:21 +09:00
Arnd Bergmann
4ec5d4a4f6 staging: wilc1000: remove unused string functions
The driver provides wrappers for a lot of string operations.
Some of them are unused, while others should be replaced
with normal kernel functions.

This replaces the unused ones for now, and leaves the other
ones for a later cleanup.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-06-02 13:45:21 +09:00
Arnd Bergmann
f155bcf8de staging: wilc1000: remove time wrapper
The abstraction for time in this driver is completely
unused, so remove it.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-06-02 13:45:21 +09:00