linux.git/arch/openrisc, branch v3.17

Merge branch 'signal-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/misc

2014-08-09T16:58:12+00:00

Pull arch signal handling cleanup from Richard Weinberger:
 "This patch series moves all remaining archs to the get_signal(),
  signal_setup_done() and sigsp() functions.

  Currently these archs use open coded variants of the said functions.
  Further, unused parameters get removed from get_signal_to_deliver(),
  tracehook_signal_handler() and signal_delivered().

  At the end of the day we save around 500 lines of code."

* 'signal-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/misc: (43 commits)
  powerpc: Use sigsp()
  openrisc: Use sigsp()
  mn10300: Use sigsp()
  mips: Use sigsp()
  microblaze: Use sigsp()
  metag: Use sigsp()
  m68k: Use sigsp()
  m32r: Use sigsp()
  hexagon: Use sigsp()
  frv: Use sigsp()
  cris: Use sigsp()
  c6x: Use sigsp()
  blackfin: Use sigsp()
  avr32: Use sigsp()
  arm64: Use sigsp()
  arc: Use sigsp()
  sas_ss_flags: Remove nested ternary if
  Rip out get_signal_to_deliver()
  Clean up signal_delivered()
  tracehook_signal_handler: Remove sig, info, ka and regs
  ...

openrisc: Use sigsp()

2014-08-06T11:04:31+00:00

Use sigsp() instead of the open coded variant.

Signed-off-by: Richard Weinberger

Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2014-08-06T00:38:45+00:00

Pull irq updates from Thomas Gleixner:
 "Nothing spectacular from the irq department this time:
   - overhaul of the crossbar chip driver
   - overhaul of the spear shirq chip driver
   - support for the atmel-aic chip
   - code move from arch to drivers
   - the usual tiny fixlets
   - two reverts worth to mention which undo the too simple attempt of
     supporting wakeup interrupts on shared interrupt lines"

* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (41 commits)
  Revert "irq: Warn when shared interrupts do not match on NO_SUSPEND"
  Revert "PM / sleep / irq: Do not suspend wakeup interrupts"
  irq: Warn when shared interrupts do not match on NO_SUSPEND
  irqchip: atmel-aic: Define irq fixups for atmel SoCs
  irqchip: atmel-aic: Implement RTC irq fixup
  irqchip: atmel-aic: Add irq fixup infrastructure
  irqchip: atmel-aic: Add atmel AIC/AIC5 drivers
  irqchip: atmel-aic: Move binding doc to interrupt-controller directory
  genirq: generic chip: Export irq_map_generic_chip function
  PM / sleep / irq: Do not suspend wakeup interrupts
  irqchip: or1k-pic: Migrate from arch/openrisc/
  irqchip: crossbar: Allow for quirky hardware with direct hardwiring of GIC
  documentation: dt: omap: crossbar: Add description for interrupt consumer
  irqchip: crossbar: Introduce centralized check for crossbar write
  irqchip: crossbar: Introduce ti, max-crossbar-sources to identify valid crossbar mapping
  irqchip: crossbar: Add kerneldoc for crossbar_domain_unmap callback
  irqchip: crossbar: Set cb pointer to null in case of error
  irqchip: crossbar: Change the goto naming
  irqchip: crossbar: Return proper error value
  irqchip: crossbar: Fix kerneldoc warning
  ...

arch, locking: Ciao arch_mutex_cpu_relax()

2014-07-17T10:32:47+00:00

The arch_mutex_cpu_relax() function, introduced by 34b133f, is
hacky and ugly. It was added a few years ago to address the fact
that common cpu_relax() calls include yielding on s390, and thus
impact the optimistic spinning functionality of mutexes. Nowadays
we use this function well beyond mutexes: rwsem, qrwlock, mcs and
lockref. Since the macro that defines the call is in the mutex header,
any users must include mutex.h and the naming is misleading as well.

This patch (i) renames the call to cpu_relax_lowlatency  ("relax, but
only if you can do it with very low latency") and (ii) defines it in
each arch's asm/processor.h local header, just like for regular cpu_relax
functions. On all archs, except s390, cpu_relax_lowlatency is simply cpu_relax,
and thus we can take it out of mutex.h. While this can seem redundant,
I believe it is a good choice as it allows us to move out arch specific
logic from generic locking primitives and enables future(?) archs to
transparently define it, similarly to System Z.

Signed-off-by: Davidlohr Bueso 
Signed-off-by: Peter Zijlstra 
Cc: Andrew Morton 
Cc: Anton Blanchard 
Cc: Aurelien Jacquiot 
Cc: Benjamin Herrenschmidt 
Cc: Bharat Bhushan 
Cc: Catalin Marinas 
Cc: Chen Liqin 
Cc: Chris Metcalf 
Cc: Christian Borntraeger 
Cc: Chris Zankel 
Cc: David Howells 
Cc: David S. Miller 
Cc: Deepthi Dharwar 
Cc: Dominik Dingel 
Cc: Fenghua Yu 
Cc: Geert Uytterhoeven 
Cc: Guan Xuetao 
Cc: Haavard Skinnemoen 
Cc: Hans-Christian Egtvedt 
Cc: Heiko Carstens 
Cc: Helge Deller 
Cc: Hirokazu Takata 
Cc: Ivan Kokshaysky 
Cc: James E.J. Bottomley 
Cc: James Hogan 
Cc: Jason Wang 
Cc: Jesper Nilsson 
Cc: Joe Perches 
Cc: Jonas Bonn 
Cc: Joseph Myers 
Cc: Kees Cook 
Cc: Koichi Yasutake 
Cc: Lennox Wu 
Cc: Linus Torvalds 
Cc: Mark Salter 
Cc: Martin Schwidefsky 
Cc: Matt Turner 
Cc: Max Filippov 
Cc: Michael Neuling 
Cc: Michal Simek 
Cc: Mikael Starvik 
Cc: Nicolas Pitre 
Cc: Paolo Bonzini 
Cc: Paul Burton 
Cc: Paul E. McKenney 
Cc: Paul Gortmaker 
Cc: Paul Mackerras 
Cc: Qais Yousef 
Cc: Qiaowei Ren 
Cc: Rafael Wysocki 
Cc: Ralf Baechle 
Cc: Richard Henderson 
Cc: Richard Kuo 
Cc: Russell King 
Cc: Steven Miao 
Cc: Steven Rostedt 
Cc: Stratos Karafotis 
Cc: Tim Chen 
Cc: Tony Luck 
Cc: Vasily Kulikov 
Cc: Vineet Gupta 
Cc: Vineet Gupta 
Cc: Waiman Long 
Cc: Will Deacon 
Cc: Wolfram Sang 
Cc: adi-buildroot-devel@lists.sourceforge.net
Cc: linux390@de.ibm.com
Cc: linux-alpha@vger.kernel.org
Cc: linux-am33-list@redhat.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-c6x-dev@linux-c6x.org
Cc: linux-cris-kernel@axis.com
Cc: linux-hexagon@vger.kernel.org
Cc: linux-ia64@vger.kernel.org
Cc: linux@lists.openrisc.net
Cc: linux-m32r-ja@ml.linux-m32r.org
Cc: linux-m32r@ml.linux-m32r.org
Cc: linux-m68k@lists.linux-m68k.org
Cc: linux-metag@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux-parisc@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-s390@vger.kernel.org
Cc: linux-sh@vger.kernel.org
Cc: linux-xtensa@linux-xtensa.org
Cc: sparclinux@vger.kernel.org
Link: http://lkml.kernel.org/r/1404079773.2619.4.camel@buesod1.americas.hpqcorp.net
Signed-off-by: Ingo Molnar

irqchip: or1k-pic: Migrate from arch/openrisc/

2014-07-01T12:15:06+00:00

In addition to consolidating the or1k-pic with other interrupt
controllers, this makes OpenRISC less tied to its on-cpu
interrupt controller.

All or1k-pic specific parts are moved out of irq.c and into
drivers/irqchip/irq-or1k-pic.c

In that transition, the functionality have been divided into
three chip variants.
One that handles level triggered interrupts, one that handles edge
triggered interrupts and one that handles the interrupt
controller that is present in the or1200 OpenRISC cpu
implementation.

Signed-off-by: Stefan Kristiansson 
Link: https://lkml.kernel.org/r/1401136302-27654-1-git-send-email-stefan.kristiansson@saunalahti.fi
Acked-by: Jonas Bonn 
Signed-off-by: Jason Cooper

Merge tag 'devicetree-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux into next

2014-06-04T17:02:38+00:00

Pull DeviceTree updates from Rob Herring:
- Another round of clean-up of FDT related code in architecture code.
This removes knowledge of internal FDT details from most
architectures except powerpc.
- Conversion of kernel's custom FDT parsing code to use libfdt.
- DT based initialization for generic serial earlycon. The
introduction of generic serial earlycon support went in through the
tty tree.
- Improve the platform device naming for DT probed devices to ensure
unique naming and use parent names instead of a global index.
- Fix a race condition in of_update_property.
- Unify the various linker section OF match tables and fix several
function prototype errors.
- Update platform_get_irq_byname to work in deferred probe cases.
- 2 binding doc updates

* tag 'devicetree-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (58 commits)
of: handle NULL node in next_child iterators
of/irq: provide more wrappers for !CONFIG_OF
devicetree: bindings: Document micrel vendor prefix
dt: bindings: dwc2: fix required value for the phy-names property
of_pci_irq: kill useless variable in of_irq_parse_pci()
of/irq: do irq resolution in platform_get_irq_byname()
of: Add a testcase for of_find_node_by_path()
of: Make of_find_node_by_path() handle /aliases
of: Create unlocked version of for_each_child_of_node()
lib: add glibc style strchrnul() variant
of: Handle memory@0 node on PPC32 only
pci/of: Remove dead code
of: fix race between search and remove in of_update_property()
of: Use NULL for pointers
of: Stop naming platform_device using dcr address
of: Ensure unique names without sacrificing determinism
tty/serial: pl011: add DT based earlycon support
of/fdt: add FDT serial scanning for earlycon
of/fdt: add FDT address translation support
serial: earlycon: add DT support
...

of/fdt: consolidate built-in dtb section variables

2014-04-30T05:59:13+00:00

Unify the various architectures __dtb_start and __dtb_end definitions
moving them into of_fdt.h.

Signed-off-by: Rob Herring 
Acked-by: Vineet Gupta 
Acked-by: James Hogan 
Tested-by: Michal Simek 
Cc: Ralf Baechle 
Cc: Jonas Bonn 
Cc: Chris Zankel 
Cc: Max Filippov 
Cc: linux-metag@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux@lists.openrisc.net
Cc: linux-xtensa@linux-xtensa.org
Tested-by: Grant Likely 
Tested-by: Stephen Chivers

arch,openrisc: Convert smp_mb__*()

2014-04-18T12:20:40+00:00

Openrisc fully relies on asm-generic/barrier.h and therefore its
smp_mb() is barrier().

Signed-off-by: Peter Zijlstra 
Acked-by: Paul E. McKenney 
Link: http://lkml.kernel.org/n/tip-sxgxgqag9tond4kji07d22oh@git.kernel.org
Cc: Jonas Bonn 
Cc: Linus Torvalds 
Cc: linux-kernel@vger.kernel.org
Cc: linux@lists.openrisc.net
Signed-off-by: Ingo Molnar

Kconfig: rename HAS_IOPORT to HAS_IOPORT_MAP

2014-04-07T23:36:11+00:00

If the renamed symbol is defined lib/iomap.c implements ioport_map and
ioport_unmap and currently (nearly) all platforms define the port
accessor functions outb/inb and friend unconditionally.  So
HAS_IOPORT_MAP is the better name for this.

Consequently NO_IOPORT is renamed to NO_IOPORT_MAP.

The motivation for this change is to reintroduce a symbol HAS_IOPORT
that signals if outb/int et al are available.  I will address that at
least one merge window later though to keep surprises to a minimum and
catch new introductions of (HAS|NO)_IOPORT.

The changes in this commit were done using:

	$ git grep -l -E '(NO|HAS)_IOPORT' | xargs perl -p -i -e 's/\b((?:CONFIG_)?(?:NO|HAS)_IOPORT)\b/$1_MAP/'

Signed-off-by: Uwe Kleine-König 
Acked-by: Arnd Bergmann 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

locking/mcs: Allow architecture specific asm files to be used for contended case

2014-02-09T20:18:52+00:00

This patch allows each architecture to add its specific assembly optimized
arch_mcs_spin_lock_contended and arch_mcs_spinlock_uncontended for
MCS lock and unlock functions.

Signed-off-by: Tim Chen 
Cc: Scott J Norton 
Cc: Raghavendra K T 
Cc: AswinChandramouleeswaran 
Cc: George Spelvin 
Cc: Rik vanRiel 
Cc: Andrea Arcangeli 
Cc: MichelLespinasse 
Cc: Peter Hurley 
Cc: Andi Kleen 
Cc: Alex Shi 
Cc: Dave Hansen 
Cc: Tim Chen 
Cc: Arnd Bergmann 
Cc: "Figo.zhang" 
Cc: "Paul E.McKenney" 
Cc: "H. Peter Anvin" 
Cc: Davidlohr Bueso 
Cc: Waiman Long 
Cc: Ingo Molnar 
Cc: Will Deacon 
Cc: Andrew Morton 
Cc: Linus Torvalds 
Cc: Matthew R Wilcox 
Signed-off-by: Peter Zijlstra 
Link: http://lkml.kernel.org/r/1390347382.3138.67.camel@schen9-DESK
Signed-off-by: Ingo Molnar