92362 Commits

Author SHA1 Message Date
Julien Grall
47c542050d xen/gnttab: Use phys_addr_t to describe the grant frame base address
On ARM, address size can be 32 bits or 64 bits (if CONFIG_ARCH_PHYS_ADDR_T_64BIT
is enabled).
We can't assume that the grant frame base address will always fits in an
unsigned long. Use phys_addr_t instead of unsigned long as argument for
gnttab_setup_auto_xlat_frames.

Signed-off-by: Julien Grall <julien.grall@linaro.org>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Reviewed-by: David Vrabel <david.vrabel@citrix.com>
2014-01-30 12:56:34 +00:00
Ian Campbell
e17b2f114c xen: swiotlb: handle sizeof(dma_addr_t) != sizeof(phys_addr_t)
The use of phys_to_machine and machine_to_phys in the phys<=>bus conversions
causes us to lose the top bits of the DMA address if the size of a DMA address is not the same as the size of the phyiscal address.

This can happen in practice on ARM where foreign pages can be above 4GB even
though the local kernel does not have LPAE page tables enabled (which is
totally reasonable if the guest does not itself have >4GB of RAM). In this
case the kernel still maps the foreign pages at a phys addr below 4G (as it
must) but the resulting DMA address (returned by the grant map operation) is
much higher.

This is analogous to a hardware device which has its view of RAM mapped up
high for some reason.

This patch makes I/O to foreign pages (specifically blkif) work on 32-bit ARM
systems with more than 4GB of RAM.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
2014-01-30 12:54:20 +00:00
Julien Grall
8b271d57b5 arm/xen: Initialize event channels earlier
Event channels driver needs to be initialized very early. Until now, Xen
initialization was done after all CPUs was bring up.

We can safely move the initialization to an early initcall.

Also use a cpu notifier to:
    - Register the VCPU when the CPU is prepared
    - Enable event channel IRQ when the CPU is running

Signed-off-by: Julien Grall <julien.grall@linaro.org>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
2014-01-30 12:52:59 +00:00
Andi Kleen
07ba06d9d2 x86, asmlinkage, xen: Fix type of NMI
LTO requires consistent types of symbols over all files.

So "nmi" cannot be declared as a char [] here, need to use the
correct function type.

Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Link: http://lkml.kernel.org/r/1382458079-24450-8-git-send-email-andi@firstfloor.org
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2014-01-29 22:17:18 -08:00
Andi Kleen
dd41f818e5 x86, asmlinkage, xen, kvm: Make {xen,kvm}_lock_spinning global and visible
These functions are called from inline assembler stubs, thus
need to be global and visible.

Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Link: http://lkml.kernel.org/r/1382458079-24450-7-git-send-email-andi@firstfloor.org
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2014-01-29 22:17:18 -08:00
Andi Kleen
dff38e3e93 x86: Use inline assembler instead of global register variable to get sp
LTO in gcc 4.6/47. has trouble with global register variables. They were used
to read the stack pointer. Use a simple inline assembler statement with
a mov instead.

This also helps LLVM/clang, which does not support global register
variables.

[ hpa: Ideally this should become a builtin in both gcc and clang. ]

v2: More general asm constraint. Fix description (Jan Beulich)

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Link: http://lkml.kernel.org/r/1382458079-24450-6-git-send-email-andi@firstfloor.org
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2014-01-29 22:17:17 -08:00
Andi Kleen
a2e7f0e3a4 x86, asmlinkage, paravirt: Make paravirt thunks global
The paravirt thunks use a hack of using a static reference to a static
function to reference that function from the top level statement.

This assumes that gcc always generates static function names in a specific
format, which is not necessarily true.

Simply make these functions global and asmlinkage or __visible. This way the
static __used variables are not needed and everything works.

Functions with arguments are __visible to keep the register calling
convention on 32bit.

Changed in paravirt and in all users (Xen and vsmp)

v2: Use __visible for functions with arguments

Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Ido Yariv <ido@wizery.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Link: http://lkml.kernel.org/r/1382458079-24450-5-git-send-email-andi@firstfloor.org
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2014-01-29 22:17:17 -08:00
Andi Kleen
824a287009 x86, asmlinkage, paravirt: Don't rely on local assembler labels
The paravirt patching code assumes that it can reference a
local assembler label between two different top level assembler
statements. This does not work with LTO
where the assembler code may end up in different assembler files.

Replace it with extern / global /asm linkage labels.

This also removes one redundant copy of the macro.

Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Link: http://lkml.kernel.org/r/1382458079-24450-4-git-send-email-andi@firstfloor.org
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2014-01-29 22:17:17 -08:00
Andi Kleen
9549b9b347 x86, asmlinkage, lguest: Fix C functions used by inline assembler
- Make the C code used by the paravirt stubs visible
- Since they have to be global now, give them a more unique
name.

Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Link: http://lkml.kernel.org/r/1382458079-24450-3-git-send-email-andi@firstfloor.org
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2014-01-29 22:17:17 -08:00
Linus Torvalds
17c7f85460 Merge git://www.linux-watchdog.org/linux-watchdog
Pull watchdog updates from Wim Van Sebroeck:
 - new driver for bcm281xx watchdog device
 - new driver for gpio based watchdog devices
 - remove DEFINE_PCI_DEVICE_TABLE macro for watchdog device drivers
 - conversion of davinci_wdt and mpc8xxx_wdt to watchdog core
 - improvements on davinci_wdt, at91/dt, at91sam9_wdt and s3c2410_wdt
 - Auto-detect IO address and expand supported chips on w836* super-I/O
   chipsets
 - core: Make dt "timeout-sec" property work on drivers w/out min/max
 - fix Kconfig dependencies
 - sirf: Remove redundant of_match_ptr helper
 - mach-moxart: add restart handler
 - hpwdt patch to display better panic information
 - imx2_wdt: disable watchdog timer during low power mode

* git://www.linux-watchdog.org/linux-watchdog: (31 commits)
  watchdog: w83627hf_wdt: Reset watchdog trigger during initialization
  watchdog: w83627hf: Add support for W83697HF and W83697UG
  watchdog: w83627hf: Auto-detect IO address and supported chips
  watchdog: at91sam9_wdt: increase security margin on watchdog counter reset
  watchdog: at91sam9_wdt: avoid spurious watchdog reset during init
  watchdog: at91sam9_wdt: fix secs_to_ticks
  ARM: at91/dt: add watchdog properties to kizbox board
  ARM: at91/dt: add sam9 watchdog default options to SoCs
  watchdog: at91sam9_wdt: update device tree doc
  watchdog: at91sam9_wdt: better watchdog support
  watchdog: sp805_wdt depends also on ARM64
  watchdog: mach-moxart: add restart handler
  watchdog: mpc8xxx_wdt convert to watchdog core
  watchdog: sirf: Remove redundant of_match_ptr helper
  watchdog: hpwdt patch to display informative string
  watchdog: dw_wdt: remove build dependencies
  watchdog: imx2_wdt: disable watchdog timer during low power mode
  watchdog: s3c2410_wdt: Report when the watchdog reset the system
  watchdog: s3c2410_wdt: use syscon regmap interface to configure pmu register
  watchdog: s3c2410_wdt: Handle rounding a little better for timeout
  ...
2014-01-29 19:57:43 -08:00
Linus Torvalds
30c867eebf blackfin updates for Linux 3.14
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Merge tag 'blackfin-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/realmz6/blackfin-linux

Pull blackfin updates from Steven Miao:
 "Some minor changes and bug fixes"

* tag 'blackfin-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/realmz6/blackfin-linux:
  From: Eunbong Song <eunb.song@samsung.com>
  Add platfrom device resource for bfin-sport on bf533 stamp
  fix build error for bf527-ezkit_defconfig for old silicon
  blackfin: Support L1 SRAM parity checking feature on bf60x
  blackfin: bf609: update the anomaly list to Nov 2013
  blackfin: delete non-required instances of <linux/init.h>
  From: Paul Walmsley <pwalmsley@nvidia.com>
  06/18] smp, blackfin: kill SMP single function call interrupt
  arch: blackfin: uapi: be sure of "_UAPI" prefix for all guard macros
2014-01-29 18:24:20 -08:00
Linus Torvalds
cac9283ca3 Merge branch 'x86-intel-mid-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull intel MID cleanups from Peter Anvin:
 "Miscellaneous cleanups to the intel-mid code merged earlier in this
  merge window"

* 'x86-intel-mid-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86, intel-mid: Cleanup some platform code's header files
  x86, intel-mid: Add missing 'void' to functions without arguments
  x86: Don't add new __cpuinit users to Merrifield platform code
  x86: Don't introduce more __cpuinit users in intel_mid_weak_decls.h
2014-01-29 18:23:30 -08:00
Linus Torvalds
cca21640d2 Merge branch 'x86-x32-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull more x32 uabi type fixes from Peter Anvin:
 "Despite the branch name, **most of these changes are to generic
  code**.  They change types so that they make an increasing amount of
  the exported uapi kernel headers usable for libc.

  The ARM64 people are also interested in these changes for their ILP32
  ABI"

* 'x86-x32-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  uapi: Use __kernel_long_t in struct mq_attr
  uapi: Use __kernel_ulong_t in shmid64_ds/shminfo64/shm_info
  x86, uapi, x32: Use __kernel_ulong_t in x86 struct semid64_ds
  uapi: Use __kernel_ulong_t in struct msqid64_ds
  uapi: Use __kernel_long_t in struct msgbuf
  uapi, asm-generic: Use __kernel_ulong_t in uapi struct ipc64_perm
  uapi: Use __kernel_long_t/__kernel_ulong_t in <linux/resource.h>
  uapi: Use __kernel_long_t in struct timex
2014-01-29 18:22:16 -08:00
Linus Torvalds
e914e3f48d Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Pull more ARM updates from Russell King:
 "Some further changes for this merge window:
   - fix bug building with gcc 4.6.4 and EABI.
   - fix pgtbl macro with some LPAE configurations
   - fix initrd override - FDT was overriding the command line, and it
     should be the other way around.
   - fix byteswap of instructions in undefined instruction handler
   - add basic support for SolidRun Hummingboard and Cubox-i boards"

* 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
  ARM: fix building with gcc 4.6.4
  ARM: 7941/2: Fix incorrect FDT initrd parameter override
  ARM: 7947/1: Make pgtbl macro more robust
  ARM: 7946/1: asm: __und_usr_thumb need byteswap instructions in BE case
  ARM: 7930/1: Introduce atomic MMIO modify
  ARM: imx: initial SolidRun Cubox-i support
  ARM: imx: initial SolidRun HummingBoard support
2014-01-29 18:20:41 -08:00
Linus Torvalds
19ba20f455 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc
Pull sparc update from David Miller:
 "Two cleanups from Paul Gortmaker and hook up the new scheduler system
  calls"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  sparc: Hook up sched_setattr and sched_getattr syscalls.
  sparc: don't use module_init in non-modular pci.c code
  sparc: delete non-required instances of include <linux/init.h>
2014-01-29 18:07:52 -08:00
Heiko Carstens
49382d9385 s390/compat: change parameter types from unsigned long to compat_ulong_t
Change parameter types of s390's compat ipc syscall from unsigned long
to compat_ulong_t to enforce zero extension of these parameters.

This is not really a bug, since s390_ipc compat syscall is only a
wrapper to the generic compat_sys_ipc() syscall, which performs correct
zero and sign extension.

This was introduced with commit 56e41d3c5aa8 ("merge compat sys_ipc
instances").

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-29 16:22:40 -08:00
Paolo Bonzini
b73117c493 Merge branch 'kvm-ppc-next' of git://github.com/agraf/linux-2.6 into kvm-queue
Conflicts:
	arch/powerpc/kvm/book3s_hv_rmhandlers.S
	arch/powerpc/kvm/booke.c
2014-01-29 18:29:01 +01:00
Paolo Bonzini
77f01bdfa5 x86, kvm: correctly access the KVM_CPUID_FEATURES leaf at 0x40000101
When Hyper-V hypervisor leaves are present, KVM must relocate
its own leaves at 0x40000100, because Windows does not look for
Hyper-V leaves at indices other than 0x40000000.  In this case,
the KVM features are at 0x40000101, but the old code would always
look at 0x40000001.

Fix by using kvm_cpuid_base().  This also requires making the
function non-inline, since kvm_cpuid_base() is static.

Fixes: 1085ba7f552d84aa8ac0ae903fa8d0cc2ff9f79d
Cc: stable@vger.kernel.org
Cc: mtosatti@redhat.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-01-29 18:11:55 +01:00
Paolo Bonzini
1c300a4077 x86, kvm: cache the base of the KVM cpuid leaves
It is unnecessary to go through hypervisor_cpuid_base every time
a leaf is found (which will be every time a feature is requested
after the next patch).

Fixes: 1085ba7f552d84aa8ac0ae903fa8d0cc2ff9f79d
Cc: stable@vger.kernel.org
Cc: mtosatti@redhat.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-01-29 18:11:54 +01:00
Paolo Bonzini
5f66b62095 kvm: x86: move KVM_CAP_HYPERV_TIME outside #ifdef
Self explanatory.

Reported-by: Radim Krcmar <rkrcmar@redhat.com>
Cc: Vadim Rozenfeld <vrozenfe@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-01-29 18:10:45 +01:00
H. Peter Anvin
4064e0ea3c Merge commit 'f4bcd8ccddb02833340652e9f46f5127828eb79d' into x86/build
Bring in upstream merge of x86/kaslr for future patches.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2014-01-29 09:07:00 -08:00
Jens Axboe
675675ada4 xtensa: fixup simdisk driver to work with immutable bio_vecs
Geert reported:

arch/xtensa/platforms/iss/simdisk.c:108:23: error: 'struct bio' has no member named 'bi_sector'
arch/xtensa/platforms/iss/simdisk.c:110:2: error: incompatible types when assigning to type 'int' from type 'struct bvec_iter'
arch/xtensa/platforms/iss/simdisk.c:110:2: error: request for member 'bi_size' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:110:2: error: request for member 'bi_idx' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:110:2: error: request for member 'bi_size' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:110:2: error: request for member 'bi_size' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:110:2: error: request for member 'bi_idx' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:110:2: error: request for member 'bi_bvec_done' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:110:2: error: request for member 'bi_idx' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:110:2: error: request for member 'bi_bvec_done' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:110:2: error: request for member 'bi_idx' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:110:2: error: request for member 'bi_bvec_done' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:110:2: error: request for member 'bv_len' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_idx' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_size' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_size' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_idx' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_bvec_done' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_idx' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_bvec_done' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_idx' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_bvec_done' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_idx' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_size' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_size' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_idx' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_bvec_done' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_idx' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_bvec_done' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_idx' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_bvec_done' in something not a structure or union
make[2]: *** [arch/xtensa/platforms/iss/simdisk.o] Error 1

Fixup the usage of bio_for_each_segment(). Also fix wrong use
of __bio_kunmap_atomic() - it needs the mapped buffer passed in,
not the originally mapped page.

Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2014-01-29 08:37:32 -07:00
David S. Miller
a54983ae64 sparc: Hook up sched_setattr and sched_getattr syscalls.
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-29 00:45:06 -08:00
Paul Gortmaker
1b925b57e9 sparc: don't use module_init in non-modular pci.c code
The pci.o is built for SPARC64_PCI -- which is bool, and hence
this code is either present or absent.  It will never be modular,
so using module_init as an alias for __initcall can be somewhat
misleading.

Fix this up now, so that we can relocate module_init from
init.h into module.h in the future.  If we don't do this, we'd
have to add module.h to obviously non-modular code, and that
would be a worse thing.

Note that direct use of __initcall is discouraged, vs. one
of the priority categorized subgroups.  As __initcall gets
mapped onto device_initcall, our use of device_initcall
directly in this change means that the runtime impact is
zero -- it will remain at level 6 in initcall ordering.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-28 23:38:24 -08:00
Paul Gortmaker
8b2abcbc5e sparc: delete non-required instances of include <linux/init.h>
None of these files are actually using any __init type directives
and hence don't need to include <linux/init.h>.  Most are just a
left over from __devinit and __cpuinit removal, or simply due to
code getting copied from one driver to the next.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-28 23:38:23 -08:00
Steven Miao
58095fdaaf From: Eunbong Song <eunb.song@samsung.com>
This patch removes CONFIG_MTD_PARTITIONS in config files for blackfin.
Because CONFIG_MTD_PARTITIONS was removed by commit
6a8a98b22b10f1560d5f90aded4a54234b9b2724.

Signed-off-by: Eunbong Song <eunb.song@samsung.com>
Signed-off-by: Steven Miao <realmz6@gmail.com>
2014-01-29 15:14:56 +08:00
Aaron Wu
eb706def7e Add platfrom device resource for bfin-sport on bf533 stamp
Signed-off-by: Aaron Wu <Aaron.wu@analog.com>
Signed-off-by: Steven Miao <realmz6@gmail.com>
2014-01-29 15:13:26 +08:00
Aaron Wu
44148338ce fix build error for bf527-ezkit_defconfig for old silicon
Signed-off-by: Aaron Wu <Aaron.wu@analog.com>

fix build error for bf527-ezkit_defconfig for old silicon
2014-01-29 15:13:20 +08:00
Sonic Zhang
1b6012394b blackfin: Support L1 SRAM parity checking feature on bf60x
Move code for the SEC faults from the IRQ hanlders into IRQ actions.
refine bfin fault routine handle

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Steven Miao <realmz6@gmail.com>
2014-01-29 15:12:20 +08:00
Sonic Zhang
cccdfcf728 blackfin: bf609: update the anomaly list to Nov 2013
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
2014-01-29 15:11:50 +08:00
Paul Gortmaker
10f3c513c9 blackfin: delete non-required instances of <linux/init.h>
None of these files are actually using any __init type directives
and hence don't need to include <linux/init.h>.  Most are just a
left over from __devinit and __cpuinit removal, or simply due to
code getting copied from one driver to the next.

Cc: Mike Frysinger <vapier@gentoo.org>
Cc: uclinux-dist-devel@blackfin.uclinux.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2014-01-29 15:11:42 +08:00
Steven Miao
b48b3a3906 From: Paul Walmsley <pwalmsley@nvidia.com>
blackfin: bf60x: clock: return 0 upon error from clk_round_rate()

clk_round_rate() should return 0 upon an error, rather than returning
a negative error code.  This is because clk_round_rate() is being
changed to return an unsigned return type rather than a signed type,
since some clock sources can generate rates higher than (2^31)-1 Hz.

Signed-off-by: Paul Walmsley <pwalmsley@nvidia.com>
Signed-off-by: Steven Miao <realmz6@gmail.com>
2014-01-29 15:11:26 +08:00
Jiang Liu
5e98c09904 06/18] smp, blackfin: kill SMP single function call interrupt
Commit 9a46ad6d6df3b54 "smp: make smp_call_function_many() use logic
similar to smp_call_function_single()" has unified the way to handle
single and multiple cross-CPU function calls. Now only one interrupt
is needed for architecture specific code to support generic SMP function
call interfaces, so kill the redundant single function call interrupt.

Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Shaohua Li <shli@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Jiri Kosina <trivial@kernel.org>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: uclinux-dist-devel@blackfin.uclinux.org
Signed-off-by: Jiang Liu <liuj97@gmail.com>
2014-01-29 15:11:12 +08:00
Chen Gang
1337650935 arch: blackfin: uapi: be sure of "_UAPI" prefix for all guard macros
For all uapi headers, need use "_UAPI" prefix for its guard macro
(which will be stripped by "scripts/headers_installer.sh").

Also be sure that all files have their guard macros.

Also be sure that all "#endif" are followed with comments, and no '\t'
for guard macro

Signed-off-by: Chen Gang <gang.chen@asianux.com>
2014-01-29 15:11:06 +08:00
Benjamin Herrenschmidt
f878f84373 powerpc: Wire up sched_setattr and sched_getattr syscalls
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-01-29 17:13:05 +11:00
Tiejun Chen
94b09d7554 powerpc/hugetlb: Replace __get_cpu_var with get_cpu_var
Replace __get_cpu_var safely with get_cpu_var to avoid
the following call trace:

[ 7253.637591] BUG: using smp_processor_id() in preemptible [00000000 00000000]
code: hugemmap01/9048
[ 7253.637601] caller is free_hugepd_range.constprop.25+0x88/0x1a8
[ 7253.637605] CPU: 1 PID: 9048 Comm: hugemmap01 Not tainted 3.10.20-rt14+ #114
[ 7253.637606] Call Trace:
[ 7253.637617] [cb049d80] [c0007ea4] show_stack+0x4c/0x168 (unreliable)
[ 7253.637624] [cb049dc0] [c031c674] debug_smp_processor_id+0x114/0x134
[ 7253.637628] [cb049de0] [c0016d28] free_hugepd_range.constprop.25+0x88/0x1a8
[ 7253.637632] [cb049e00] [c001711c] hugetlb_free_pgd_range+0x6c/0x168
[ 7253.637639] [cb049e40] [c0117408] free_pgtables+0x12c/0x150
[ 7253.637646] [cb049e70] [c011ce38] unmap_region+0xa0/0x11c
[ 7253.637671] [cb049ef0] [c011f03c] do_munmap+0x224/0x3bc
[ 7253.637676] [cb049f20] [c011f2e0] vm_munmap+0x38/0x5c
[ 7253.637682] [cb049f40] [c000ef88] ret_from_syscall+0x0/0x3c
[ 7253.637686] --- Exception: c01 at 0xff16004

Signed-off-by: Tiejun Chen<tiejun.chen@windriver.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-01-29 17:02:26 +11:00
Paul Mackerras
91b973f90c powerpc: Make sure "cache" directory is removed when offlining cpu
The code in remove_cache_dir() is supposed to remove the "cache"
subdirectory from the sysfs directory for a CPU when that CPU is
being offlined.  It tries to do this by calling kobject_put() on
the kobject for the subdirectory.  However, the subdirectory only
gets removed once the last reference goes away, and the reference
being put here may well not be the last reference.  That means
that the "cache" subdirectory may still exist when the offlining
operation has finished.  If the same CPU subsequently gets onlined,
the code tries to add a new "cache" subdirectory.  If the old
subdirectory has not yet been removed, we get a WARN_ON in the
sysfs code, with stack trace, and an error message printed on the
console.  Further, we ultimately end up with an online cpu with no
"cache" subdirectory.

This fixes it by doing an explicit kobject_del() at the point where
we want the subdirectory to go away.  kobject_del() removes the sysfs
directory even though the object still exists in memory.  The object
will get freed at some point in the future.  A subsequent onlining
operation can create a new sysfs directory, even if the old object
still exists in memory, without causing any problems.

Cc: stable@vger.kernel.org # v3.0+
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-01-29 17:02:26 +11:00
jmarchan@redhat.com
19751c07b3 powerpc/mm: Fix mmap errno when MAP_FIXED is set and mapping exceeds the allowed address space
According to Posix, if MAP_FIXED is specified mmap shall set ENOMEM if
the requested mapping exceeds the allowed range for address space of
the process. The generic code set it right, but the specific powerpc
slice_get_unmapped_area() function currently returns -EINVAL in that
case.
This patch corrects it.

Signed-off-by: Jerome Marchand <jmarchan@redhat.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-01-29 17:02:25 +11:00
Deepthi Dharwar
2c2e6ecfd0 powerpc/powernv/cpuidle: Back-end cpuidle driver for powernv platform.
Following patch ports the cpuidle framework for powernv
platform and also implements a cpuidle back-end powernv
idle driver calling on to power7_nap and snooze idle states.

Signed-off-by: Deepthi Dharwar <deepthi@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-01-29 17:02:24 +11:00
Deepthi Dharwar
3fa8cad82b powerpc/pseries/cpuidle: smt-snooze-delay cleanup.
smt-snooze-delay was designed to disable NAP state or delay the entry
to the NAP state prior to adoption of cpuidle framework. This
is per-cpu variable. With the coming of CPUIDLE framework,
states can be disabled on per-cpu basis using the cpuidle/enable
sysfs entry.

Also, with the coming of cpuidle driver each state's target residency
is per-driver unlike earlier which was per-device. Therefore,
the per-cpu sysfs smt-snooze-delay which decides the target residency
of the idle state on a particular cpu causes more confusion to the user
as we cannot have different smt-snooze-delay (target residency)
values for each cpu.

In the current code, smt-snooze-delay functionality is completely broken.
It makes sense to remove smt-snooze-delay from idle driver with the
coming of cpuidle framework.
However, sysfs files are retained as ppc64_util currently
utilises it. Once we fix ppc64_util, propose to clean
up the kernel code.

Signed-off-by: Deepthi Dharwar <deepthi@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-01-29 17:02:24 +11:00
Deepthi Dharwar
962e7bd497 powerpc/pseries/cpuidle: Move processor_idle.c to drivers/cpuidle.
Move the file from arch specific pseries/processor_idle.c
to drivers/cpuidle/cpuidle-pseries.c
Make the relevant Makefile and Kconfig changes.
Also, introduce Kconfig.powerpc in drivers/cpuidle
for all powerpc cpuidle drivers.

Signed-off-by: Deepthi Dharwar <deepthi@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-01-29 17:02:22 +11:00
Paul Mackerras
d765ff23e3 powerpc: Fix 32-bit frames for signals delivered when transactional
Commit d31626f70b61 ("powerpc: Don't corrupt transactional state when
using FP/VMX in kernel") introduced a bug where the uc_link and uc_regs
fields of the ucontext_t that is created to hold the transactional
values of the registers in a 32-bit signal frame didn't get set
correctly.  The reason is that we now clear the MSR_TS bits in the MSR
in save_tm_user_regs(), before the code that sets uc_link and uc_regs.
To fix this, we move the setting of uc_link and uc_regs into the same
if statement that selects whether to call save_tm_user_regs() or
save_user_regs().

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-01-29 16:58:49 +11:00
Alistair Popple
67bfa0ee66 powerpc/iommu: Fix initialisation of DART iommu table
Commit d084775738b746648d4102337163a04534a02982 switched the generic
powerpc iommu backend code to use the it_page_shift field to determine
page size. Commit 3a553170d35d69bea3877bffa508489dfa6f133d should have
initiliased this field for all platforms, however the DART iommu table
code was not updated.

This commit initialises the it_page_shift field to 4K for the DART
iommu.

Signed-off-by: Alistair Popple <alistair@popple.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-01-29 16:58:49 +11:00
Joe Perches
316d718827 powerpc/numa: Fix decimal permissions
This should have been octal.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-01-29 16:58:48 +11:00
Li Zhong
fd120dc2e2 powerpc/mm: Fix compile error of pgtable-ppc64.h
It seems that forward declaration couldn't work well with typedef, use
struct spinlock directly to avoiding following build errors:

In file included from include/linux/spinlock.h:81,
                 from include/linux/seqlock.h:35,
                 from include/linux/time.h:5,
                 from include/uapi/linux/timex.h:56,
                 from include/linux/timex.h:56,
                 from include/linux/sched.h:17,
                 from arch/powerpc/kernel/asm-offsets.c:17:
include/linux/spinlock_types.h:76: error: redefinition of typedef 'spinlock_t'
/root/linux-next/arch/powerpc/include/asm/pgtable-ppc64.h:563: note: previous declaration of 'spinlock_t' was here

Signed-off-by: Li Zhong <zhong@linux.vnet.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-01-29 16:58:48 +11:00
Andreas Schwab
1c430c06d0 powerpc: Fix hw breakpoints on !HAVE_HW_BREAKPOINT configurations
This fixes a logic error that caused a failure to update the hw breakpoint
registers when not using the hw-breakpoint interface.

Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-01-29 16:58:47 +11:00
Benjamin Herrenschmidt
6e677ef6fb Merge remote-tracking branch 'scott/next' into next
<<
This contains a fix for a chroma_defconfig build break that was
introduced by e6500 tablewalk support, and a device tree binding patch
that missed the previous pull request due to some last-minute polishing.
>>
2014-01-29 16:55:25 +11:00
Benjamin Herrenschmidt
e9a371100d Merge remote-tracking branch 'agust/next' into next
<<
Switch mpc512x to the common clock framework and adapt mpc512x
drivers to use the new clock driver. Old PPC_CLOCK code is
removed entirely since there are no users any more.
>>
2014-01-29 16:53:55 +11:00
Linus Torvalds
0e47c969c6 MTD updates for 3.14:
- Add me (Brian Norris) as an additional MTD maintainer (it'd be nice to get
    David's "ack" for this; I'm sure he approves, but he's been pretty silent
    lately)
  - Add Ezequiel Garcie as maintainer for the pxa3xx NAND driver
  - Last (?) round of pxa3xx improvements for supporting Armada 370/XP
  - Typical churn in driver boilerplate (OOM messages, printk()'s, devm_*, etc.)
  - Quad read mode support for SPI NOR driver (m25p80)
  - Update Davinci NAND driver to prepare for use on new platforms
  - Begin to kill off NAND_MAX_{PAGE,OOB}SIZE macros; more work is pending
  - Miscellaneous NAND device support (new IDs)
  - Add READ RETRY support for Micron MLC NAND
  - Support new GPMI NAND ECC layout device-tree binding
  - Avoid mapping stack/vmalloc() memory for GPMI NAND DMA
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Merge tag 'for-linus-20140127' of git://git.infradead.org/linux-mtd

Pull MTD updates from Brian Norris:
 - Add me (Brian Norris) as an additional MTD maintainer (it'd be nice to get
   David's "ack" for this; I'm sure he approves, but he's been pretty silent
   lately)
 - Add Ezequiel Garcie as maintainer for the pxa3xx NAND driver
 - Last (?) round of pxa3xx improvements for supporting Armada 370/XP
 - Typical churn in driver boilerplate (OOM messages, printk()'s, devm_*, etc.)
 - Quad read mode support for SPI NOR driver (m25p80)
 - Update Davinci NAND driver to prepare for use on new platforms
 - Begin to kill off NAND_MAX_{PAGE,OOB}SIZE macros; more work is pending
 - Miscellaneous NAND device support (new IDs)
 - Add READ RETRY support for Micron MLC NAND
 - Support new GPMI NAND ECC layout device-tree binding
 - Avoid mapping stack/vmalloc() memory for GPMI NAND DMA

* tag 'for-linus-20140127' of git://git.infradead.org/linux-mtd: (151 commits)
  mtd: gpmi: add sanity check when mapping DMA for read_buf/write_buf
  mtd: gpmi: allocate a proper buffer for non ECC read/write
  mtd: m25p80: Set rx_nbits for Quad SPI transfers
  mtd: m25p80: Enable Quad SPI read transfers for s25fl512s
  mtd: s3c2410: Merge plat/regs-nand.h into s3c2410.c
  mtd: mtdram: add missing 'const'
  mtd: m25p80: assign default read command
  mtd: nuc900_nand: remove redundant return value check of platform_get_resource()
  mtd: plat_nand: remove redundant return value check of platform_get_resource()
  mtd: nand: add Intel manufacturer ID
  mtd: nand: add SanDisk manufacturer ID
  mtd: nand: add support for Samsung K9LCG08U0B
  mtd: nand: pxa3xx: Add support for 2048 bytes page size devices
  mtd: m25p80: Use OPCODE_QUAD_READ_4B for 4-byte addressing
  mtd: nand: don't use {read,write}_buf for 8-bit transfers
  mtd: nand: use __packed shorthand
  mtd: nand: support Micron READ RETRY
  mtd: nand: add generic READ RETRY support
  mtd: nand: add ONFI vendor block for Micron
  mtd: nand: localize ECC failures per page
  ...
2014-01-28 18:56:37 -08:00
Linus Torvalds
268943fb75 Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds
Pull LED subsystem update from Bryan Wu:
 "Basically this cycle is mostly cleanup for LED subsystem"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds:
  leds: s3c24xx: Remove hardware.h inclusion
  leds: replace list_for_each with list_for_each_entry
  leds: kirkwood: Cleanup in header files
  leds: pwm: Remove a warning on non-DT platforms
  leds: leds-pwm: fix duty time overflow.
  leds: leds-mc13783: Remove unneeded mc13xxx_{un}lock
  leds: leds-mc13783: Remove duplicate field in platform data
  drivers: leds: leds-tca6507: check CONFIG_GPIOLIB whether defined for 'gpio_base'
  leds: lp5523: Support LED MUX configuration on running a pattern
  leds: lp5521/5523: Fix multiple engine usage bug
  LEDS: tca6507 - fix up some comments.
  LEDS: tca6507: add device-tree support for GPIO configuration.
  LEDS: tca6507 - fix bugs in parsing of device-tree configuration.
2014-01-28 18:53:01 -08:00