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Convert locks which cannot be sleeping locks in preempt-rt to
raw_spinlocks.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Ingo Molnar <mingo@elte.hu>
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spin_* functions are mostly static inline now. That causes the alpha
compile to fail:
CC arch/alpha/kernel/sys_sable.o
cc1: warnings being treated as errors
In file included from arch/alpha/kernel/sys_sable.c:25:
arch/alpha/include/asm/core_t2.h: In function 't2_readb':
arch/alpha/include/asm/core_t2.h:451: error: 'spinlock_check' is static but \
used in inline function 't2_readb' which is not static
arch/alpha/include/asm/core_t2.h:456: error: 'spin_unlock_irqrestore' is \
static but used in inline function 't2_readb' which is not static
That's caused by the "extern inline" magic which is used for the
subarch specific read/write[bwl] functions. I tried to distangle the
uncountable macro onion layers, but failed miserably.
Last resort solution: switch the t2_hae_lock to raw_spinlock_t so the
lock functions are pure macros and function calls again.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: Richard Henderson <rth@twiddle.net>
Cc: linux-alpha@vger.kernel.org
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Name space cleanup for rwlock functions. No functional change.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: linux-arch@vger.kernel.org
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Not strictly necessary for -rt as -rt does not have non sleeping
rwlocks, but it's odd to not have a consistent naming convention.
No functional change.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: linux-arch@vger.kernel.org
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Name space cleanup. No functional change.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: linux-arch@vger.kernel.org
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Further name space cleanup. No functional change
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: linux-arch@vger.kernel.org
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The raw_spin* namespace was taken by lockdep for the architecture
specific implementations. raw_spin_* would be the ideal name space for
the spinlocks which are not converted to sleeping locks in preempt-rt.
Linus suggested to convert the raw_ to arch_ locks and cleanup the
name space instead of using an artifical name like core_spin,
atomic_spin or whatever
No functional change.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: linux-arch@vger.kernel.org
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, mce: Clean up thermal init by introducing intel_thermal_supported()
x86, mce: Thermal monitoring depends on APIC being enabled
x86: Gart: fix breakage due to IOMMU initialization cleanup
x86: Move swiotlb initialization before dma32_free_bootmem
x86: Fix build warning in arch/x86/mm/mmio-mod.c
x86: Remove usedac in feature-removal-schedule.txt
x86: Fix duplicated UV BAU interrupt vector
nvram: Fix write beyond end condition; prove to gcc copy is safe
mm: Adjust do_pages_stat() so gcc can see copy_from_user() is safe
x86: Limit the number of processor bootup messages
x86: Remove enabling x2apic message for every CPU
doc: Add documentation for bootloader_{type,version}
x86, msr: Add support for non-contiguous cpumasks
x86: Use find_e820() instead of hard coded trampoline address
x86, AMD: Fix stale cpuid4_info shared_map data in shared_cpu_map cpumasks
Trivial percpu-naming-introduced conflicts in arch/x86/kernel/cpu/intel_cacheinfo.c
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* 'next-spi' of git://git.secretlab.ca/git/linux-2.6: (23 commits)
spi: fix probe/remove section markings
Add OMAP spi100k driver
spi-imx: don't access struct device directly but use dev_get_platdata
spi-imx: Add mx25 support
spi-imx: use positive logic to distinguish cpu variants
spi-imx: correct check for platform_get_irq failing
ARM: NUC900: Add spi driver support for nuc900
spi: SuperH MSIOF SPI Master driver V2
spi: fix spidev compilation failure when VERBOSE is defined
spi/au1550_spi: fix setupxfer not to override cfg with zeros
spi/mpc8xxx: don't use __exit_p to wrap plat_mpc8xxx_spi_remove
spi/i.MX: fix broken error handling for gpio_request
spi/i.mx: drain MXC SPI transfer buffer when probing device
MAINTAINERS: add SPI co-maintainer.
spi/xilinx_spi: fix incorrect casting
spi/mpc52xx-spi: minor cleanups
xilinx_spi: add a platform driver using the xilinx_spi common module.
xilinx_spi: add support for the DS570 IP.
xilinx_spi: Switch to iomem functions and support little endian.
xilinx_spi: Split into of driver and generic part.
...
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* 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze: (46 commits)
microblaze: Remove rt_sigsuspend wrapper
microblaze: nommu: Don't clobber R11 on syscalls
microblaze: Remove show_tmem function
microblaze: Support for WB cache
microblaze: Add PVR for Microblaze v7.30.a
microblaze: Remove ancient and fake microblaze version from cpu_ver table
microblaze: Remove panic_timeout init value
microblaze: Do not count system calls in default
microblaze: Enable DTC compilation
microblaze: Core oprofile configs and hooks
microblaze: Fix level interrupt ACKing
microblaze: Enable futimesat syscall
microblaze: Checking DTS against PVR for write-back cache
microblaze: Remove duplicity from pgalloc.h
microblaze: Futex support
microblaze: Adding dev_arch_data functions
microblaze: Fix the heartbeat gpio to be more robust
microblaze: Simple __copy_tofrom_user for noMMU
microblaze: Export memory_start for modules
microblaze: Use lowest-common-denominator default CPU settings
...
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git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: (58 commits)
mfd: Add twl6030 regulator subdevices
regulator: Add support for twl6030 regulators
rtc: Add twl6030 RTC support
mfd: Add support for twl6030 irq framework
mfd: Rename twl4030_ routines in twl-regulator.c
mfd: Rename twl4030_ routines in rtc-twl.c
mfd: Rename all twl4030_i2c*
mfd: Rename twl4030* driver files to enable re-use
mfd: Clarify twl4030 return value for read and write
mfd: Add all twl4030 regulators to the twl4030 mfd driver
mfd: Don't set mc13783 ADREFMODE for touch conversions
mfd: Remove ezx-pcap defines for custom led gpio encoding
mfd: Near complete mc13783 rewrite
mfd: Remove build time warning for WM835x register default tables
mfd: Force I2C to be built in when building WM831x
mfd: Don't allow wm831x to be built as a module
mfd: Fix incorrect error check for wm8350-core
mfd: Fix twl4030 warning
gpiolib: Implement gpio_to_irq() for wm831x
mfd: Remove default selection of AB4500
...
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* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm:
ARM: fix lh7a40x build
ARM: fix sa1100 build
ARM: fix clps711x, footbridge, integrator, ixp2000, ixp2300 and s3c build bug
ARM: VFP: fix vfp thread init bug and document vfp notifier entry conditions
ARM: pxa: fix now incorrect reference of skt->irq by using skt->socket.pci_irq
[ARM] pxa/zeus: default configuration for Arcom Zeus SBC.
[ARM] pxa/zeus: make Viper pcmcia support more generic to support Zeus
[ARM] pxa/zeus: basic support for Arcom Zeus SBC
[ARM] pxa/em-x270: fix usb hub power up/reset sequence
PCMCIA: fix pxa2xx_lubbock modular build error
ARM: RealView: Fix typo in the RealView/PBX Kconfig entry
ARM: Do not allow the probing of the local timer
ARM: Add an earlyprintk debug console
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: (34 commits)
m68k: rename global variable vmalloc_end to m68k_vmalloc_end
percpu: add missing per_cpu_ptr_to_phys() definition for UP
percpu: Fix kdump failure if booted with percpu_alloc=page
percpu: make misc percpu symbols unique
percpu: make percpu symbols in ia64 unique
percpu: make percpu symbols in powerpc unique
percpu: make percpu symbols in x86 unique
percpu: make percpu symbols in xen unique
percpu: make percpu symbols in cpufreq unique
percpu: make percpu symbols in oprofile unique
percpu: make percpu symbols in tracer unique
percpu: make percpu symbols under kernel/ and mm/ unique
percpu: remove some sparse warnings
percpu: make alloc_percpu() handle array types
vmalloc: fix use of non-existent percpu variable in put_cpu_var()
this_cpu: Use this_cpu_xx in trace_functions_graph.c
this_cpu: Use this_cpu_xx for ftrace
this_cpu: Use this_cpu_xx in nmi handling
this_cpu: Use this_cpu operations in RCU
this_cpu: Use this_cpu ops for VM statistics
...
Fix up trivial (famous last words) global per-cpu naming conflicts in
arch/x86/kvm/svm.c
mm/slab.c
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It looks better to have a common function. No change in functionality.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
LKML-Reference: <4B25FDDC.407@jp.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
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Add check if APIC is not disabled since thermal
monitoring depends on it. As only apic gets disabled
we should not try to install "thermal monitor" vector,
print out that thermal monitoring is enabled and etc...
Note that "Intel Correct Machine Check Interrupts" already
has such a check.
Also I decided to not add cpu_has_apic check into
mcheck_intel_therm_init since even if it'll call apic_read on
disabled apic -- it's safe here and allow us to save a few code
bytes.
Reported-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
LKML-Reference: <4B25FDC2.3020401@jp.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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This fixes the following breakage of the commit
75f1cdf1dda92cae037ec848ae63690d91913eac:
- GART systems that don't AGP with broken BIOS and more than 4GB
memory are forced to use swiotlb. They can allocate aperture by
hand and use GART.
- GART systems without GAP must disable GART on shutdown.
- swiotlb usage is forced by the boot option,
gart_iommu_hole_init() is not called, so we disable GART
early_gart_iommu_check().
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
LKML-Reference: <1260759135-6450-3-git-send-email-fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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The commit 75f1cdf1dda92cae037ec848ae63690d91913eac introduced a
bug that we initialize SWIOTLB right after dma32_free_bootmem so
we wrongly steal memory area allocated for GART with broken BIOS
earlier.
This moves swiotlb initialization before dma32_free_bootmem().
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: yinghai@kernel.org
LKML-Reference: <1260759135-6450-2-git-send-email-fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Stephen Rothwell reported these warnings:
arch/x86/mm/mmio-mod.c: In function 'print_pte':
arch/x86/mm/mmio-mod.c:100: warning: too many arguments for format
arch/x86/mm/mmio-mod.c:106: warning: too many arguments for format
The 'fmt' was left out accidentally.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Linus <torvalds@linux-foundation.org>
LKML-Reference: <1260775443.18538.16.camel@Joe-Laptop.home>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Generic rt_sigsuspend syscalls doesn't need any asm wrapper.
Signed-off-by: Michal Simek <monstr@monstr.eu>
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The noMMU syscall trap has a bug that causes R11 to be zero on return to
userland. Remove the extra "save" of R11 responsible for the bug.
Remove reloading of mode indicator because r11 already contains it.
Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
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show_tmem function do nothing that's why I removed it.
There is also cleaning of commented ancient code.
Signed-off-by: Michal Simek <monstr@monstr.eu>
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Microblaze version 7.20.d is the first MB version which can be run
on MMU linux. Please do not used previous version because they contain
HW bug.
Based on WB support was necessary to redesign whole cache design.
Microblaze versions from 7.20.a don't need to disable IRQ and cache
before working with them that's why there are special structures for it.
Signed-off-by: Michal Simek <monstr@monstr.eu>
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Microblaze v7.30.a will have 0x10 version string.
Signed-off-by: Michal Simek <monstr@monstr.eu>
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We need to continue with next microblaze PVR version that's why
I have to remove that ancient version. These version strings not match
any versions. From Microblaze v5.00.a is possible to use this style.
I believe that none use ancients versions. If yes they will be just
labeled as unknown version.
Signed-off-by: Michal Simek <monstr@monstr.eu>
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panic_timeout is in BSS section and it is cleared with BSS section.
This means that value is setup to 0.
Signed-off-by: Michal Simek <monstr@monstr.eu>
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There is not necessary to count system calls that's why
I added DEBUG macro
Signed-off-by: Michal Simek <monstr@monstr.eu>
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For simpleImage format we need to compile DTC. There is still possibility
to compile only Linux kernel without DTB compiled-in.
Signed-off-by: Michal Simek <monstr@monstr.eu>
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Microblaze uses timer interrupt mode. Microblaze don't have
any performance counter that's why we use just simple implementation.
Signed-off-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
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Level interrupts need to be ack'd in the unmask handler, as in powerpc.
Among other issues, this bug causes the system clock to appear to run at
double-speed.
Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
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Futimesat was disabled. LTP testing shows that MB has no
problem with this syscall.
Signed-off-by: Michal Simek <monstr@monstr.eu>
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WB cache has special flag in PVR. There is added checking mechanism
for PVR and DTS.
Signed-off-by: Michal Simek <monstr@monstr.eu>
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just file cleanup
Signed-off-by: Michal Simek <monstr@monstr.eu>
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Microblaze v7.20 provides new lwx, swx instructions which bring
possibility to implement lock rutines.
There are some tests in open posix thread LTP part but current
toolchain not support it.
Signed-off-by: Michal Simek <monstr@monstr.eu>
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The functions, dev_arch_data_set_node and get_node are missing
and are needed by some device drivers such as I2C.
Signed-off-by: John Linn <john.linn@xilinx.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
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The device tree handling for the gpio in the heart beat was not handling
the system when there was no gpio and it wasn't working with a newer version
of the gpio core which does not have the is-bidir property.
Signed-off-by: John Linn <john.linn@xilinx.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
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This is first patch which clear part of uaccess.h.
uaccess.h will be clear later.
Signed-off-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
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memory_start symbol is needed by kernel modules.
Signed-off-by: Michal Simek <monstr@monstr.eu>
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This will ensure that kernels built with no custom CPU settings will still boot
OK on hardware that has additional CPU hardware instructions etc.
Signed-off-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
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It is generated with longer compatible list
Signed-off-by: Michal Simek <monstr@monstr.eu>
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Asm code uses barrel-shifter instruction that's why we have
to protect cases when HW don't have it.
Reported-by: John Linn <john.linn@xilinx.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
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This was intended to allow manual override of CPU settings copied automatically
to Kconfig.auto, however it's problematic for several reasons, but mostly:
* If the defconfig doesn't have ALLOW_EDIT_AUTO=y, then it's impossible for
that defconfig to iverride the values in the kernel source tree. This leads
to very strange errors where the kernel is compiled with the wrong CPUFLAGS.
Next patch in the series will back out the default in Kconfig.auto to baseline
settings, so a kernel built with no default values will at least boot on any
hardware, just not make use of additional CPU features.
Signed-off-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
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Signed-off-by: Michal Simek <monstr@monstr.eu>
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Two version are generated.
linux.bin.ub which is created from linux.bin file
and
simpleImage.<dts>.ub which is created from stripped simpleImage.<dts> file
Load address and entry point is for microblaze first instruction
which is CONFIG_KERNEL_BASE_ADDR variable.
There is possible for simpleImage format parse _start symbol too.
simpleImage.<dts> is still stripped elf file
I cleared simpleImage.<dts>.unstrip file because there are so big.
Signed-off-by: Michal Simek <monstr@monstr.eu>
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After the signal frame is set up on the userspace stack, ptrace() should
be given an opportunity to single-step into the signal handler
FRV, Blackfin, mn10300 and UM. Worth to look at that patches.
Signed-off-by: Michal Simek <monstr@monstr.eu>
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There is missing checking agains PVR but this is not important
for now. There are some missing checking too.
Signed-off-by: Michal Simek <monstr@monstr.eu>
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We used cache_line as cache_line_lenght. For this reason
we did cache flushing 4 times longer than was necessary.
Signed-off-by: Michal Simek <monstr@monstr.eu>
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Signed-off-by: Michal Simek <monstr@monstr.eu>
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Till this patch reset always perform writen to 1.
Now we can use negative logic and perform reset write to 0.
It is opposite level than is currently read from that pin
Signed-off-by: Michal Simek <monstr@monstr.eu>
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I had to change message for gpio-reset because I always
not to see it. Prefix RESET is big and visible.
Signed-off-by: Michal Simek <monstr@monstr.eu>
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Saving is done in SAVE_STATE macros that's why another save discard
previous saved value.
This change has no effect to normal programs because they ends in any exception
and they are killed. On the other side has effect on debugging.
Signed-off-by: Michal Simek <monstr@monstr.eu>
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