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Linus Torvalds 22943a6a6b Minor updates for ARC for 3.19
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Merge tag 'arc-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc

Pull arch/arc updates from Vineet Gupta:
 "Minor updates for ARC for 3.19"

* tag 'arc-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARC: rename default defconfig
  ARC: [nsimosci] move peripherals to match model to FPGA
  ARC: document memory clobber in irq control macros
  ARC: R-M-W assist locks only needed for !LLSC
  ARC: add power management options
2014-12-18 16:26:41 -08:00
Vineet Gupta 7a70bf797a ARC: rename default defconfig
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2014-12-17 15:23:56 +05:30
Vineet Gupta e8ef060b37 ARC: [nsimosci] move peripherals to match model to FPGA
This allows the sdplite/Zebu images to run on OSCI simulation platform

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Cc: <stable@vger.kernel.org> #3.10, 3.12, 3.14, 3.16
2014-12-15 11:24:58 +05:30
Vineet Gupta 88ec11b0f8 ARC: document memory clobber in irq control macros
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2014-12-12 16:02:46 +05:30
Vineet Gupta 9fb92eb116 ARC: R-M-W assist locks only needed for !LLSC
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2014-12-12 16:02:34 +05:30
Linus Torvalds 70e71ca0af Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller:

 1) New offloading infrastructure and example 'rocker' driver for
    offloading of switching and routing to hardware.

    This work was done by a large group of dedicated individuals, not
    limited to: Scott Feldman, Jiri Pirko, Thomas Graf, John Fastabend,
    Jamal Hadi Salim, Andy Gospodarek, Florian Fainelli, Roopa Prabhu

 2) Start making the networking operate on IOV iterators instead of
    modifying iov objects in-situ during transfers.  Thanks to Al Viro
    and Herbert Xu.

 3) A set of new netlink interfaces for the TIPC stack, from Richard
    Alpe.

 4) Remove unnecessary looping during ipv6 routing lookups, from Martin
    KaFai Lau.

 5) Add PAUSE frame generation support to gianfar driver, from Matei
    Pavaluca.

 6) Allow for larger reordering levels in TCP, which are easily
    achievable in the real world right now, from Eric Dumazet.

 7) Add a variable of napi_schedule that doesn't need to disable cpu
    interrupts, from Eric Dumazet.

 8) Use a doubly linked list to optimize neigh_parms_release(), from
    Nicolas Dichtel.

 9) Various enhancements to the kernel BPF verifier, and allow eBPF
    programs to actually be attached to sockets.  From Alexei
    Starovoitov.

10) Support TSO/LSO in sunvnet driver, from David L Stevens.

11) Allow controlling ECN usage via routing metrics, from Florian
    Westphal.

12) Remote checksum offload, from Tom Herbert.

13) Add split-header receive, BQL, and xmit_more support to amd-xgbe
    driver, from Thomas Lendacky.

14) Add MPLS support to openvswitch, from Simon Horman.

15) Support wildcard tunnel endpoints in ipv6 tunnels, from Steffen
    Klassert.

16) Do gro flushes on a per-device basis using a timer, from Eric
    Dumazet.  This tries to resolve the conflicting goals between the
    desired handling of bulk vs.  RPC-like traffic.

17) Allow userspace to ask for the CPU upon what a packet was
    received/steered, via SO_INCOMING_CPU.  From Eric Dumazet.

18) Limit GSO packets to half the current congestion window, from Eric
    Dumazet.

19) Add a generic helper so that all drivers set their RSS keys in a
    consistent way, from Eric Dumazet.

20) Add xmit_more support to enic driver, from Govindarajulu
    Varadarajan.

21) Add VLAN packet scheduler action, from Jiri Pirko.

22) Support configurable RSS hash functions via ethtool, from Eyal
    Perry.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1820 commits)
  Fix race condition between vxlan_sock_add and vxlan_sock_release
  net/macb: fix compilation warning for print_hex_dump() called with skb->mac_header
  net/mlx4: Add support for A0 steering
  net/mlx4: Refactor QUERY_PORT
  net/mlx4_core: Add explicit error message when rule doesn't meet configuration
  net/mlx4: Add A0 hybrid steering
  net/mlx4: Add mlx4_bitmap zone allocator
  net/mlx4: Add a check if there are too many reserved QPs
  net/mlx4: Change QP allocation scheme
  net/mlx4_core: Use tasklet for user-space CQ completion events
  net/mlx4_core: Mask out host side virtualization features for guests
  net/mlx4_en: Set csum level for encapsulated packets
  be2net: Export tunnel offloads only when a VxLAN tunnel is created
  gianfar: Fix dma check map error when DMA_API_DEBUG is enabled
  cxgb4/csiostor: Don't use MASTER_MUST for fw_hello call
  net: fec: only enable mdio interrupt before phy device link up
  net: fec: clear all interrupt events to support i.MX6SX
  net: fec: reset fep link status in suspend function
  net: sock: fix access via invalid file descriptor
  net: introduce helper macro for_each_cmsghdr
  ...
2014-12-11 14:27:06 -08:00
Daniel Borkmann 0cb6c969ed net, lib: kill arch_fast_hash library bits
As there are now no remaining users of arch_fast_hash(), lets kill
it entirely.

This basically reverts commit 71ae8aac3e ("lib: introduce arch
optimized hash library") and follow-up work, that is f.e., commit
237217546d ("lib: hash: follow-up fixups for arch hash"),
commit e3fec2f74f ("lib: Add missing arch generic-y entries for
asm-generic/hash.h") and last but not least commit 6a02652df5
("perf tools: Fix include for non x86 architectures").

Cc: Francesco Fusco <fusco@ntop.org>
Cc: Thomas Graf <tgraf@suug.ch>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-10 15:17:46 -05:00
Linus Torvalds a0e4467726 asm-generic: asm/io.h rewrite
While there normally is no reason to have a pull request for asm-generic
 but have all changes get merged through whichever tree needs them, I do
 have a series for 3.19. There are two sets of patches that change
 significant portions of asm/io.h, and this branch contains both in order
 to resolve the conflicts:
 
 - Will Deacon has done a set of patches to ensure that all architectures
   define {read,write}{b,w,l,q}_relaxed() functions or get them by
   including asm-generic/io.h. These functions are commonly used on ARM
   specific drivers to avoid expensive L2 cache synchronization implied by
   the normal {read,write}{b,w,l,q}, but we need to define them on all
   architectures in order to share the drivers across architectures and
   to enable CONFIG_COMPILE_TEST configurations for them
 
 - Thierry Reding has done an unrelated set of patches that extends
   the asm-generic/io.h file to the degree necessary to make it useful
   on ARM64 and potentially other architectures.
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Merge tag 'asm-generic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pull asm-generic asm/io.h rewrite from Arnd Bergmann:
 "While there normally is no reason to have a pull request for
  asm-generic but have all changes get merged through whichever tree
  needs them, I do have a series for 3.19.

  There are two sets of patches that change significant portions of
  asm/io.h, and this branch contains both in order to resolve the
  conflicts:

   - Will Deacon has done a set of patches to ensure that all
     architectures define {read,write}{b,w,l,q}_relaxed() functions or
     get them by including asm-generic/io.h.

     These functions are commonly used on ARM specific drivers to avoid
     expensive L2 cache synchronization implied by the normal
     {read,write}{b,w,l,q}, but we need to define them on all
     architectures in order to share the drivers across architectures
     and to enable CONFIG_COMPILE_TEST configurations for them

   - Thierry Reding has done an unrelated set of patches that extends
     the asm-generic/io.h file to the degree necessary to make it useful
     on ARM64 and potentially other architectures"

* tag 'asm-generic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: (29 commits)
  ARM64: use GENERIC_PCI_IOMAP
  sparc: io: remove duplicate relaxed accessors on sparc32
  ARM: sa11x0: Use void __iomem * in MMIO accessors
  arm64: Use include/asm-generic/io.h
  ARM: Use include/asm-generic/io.h
  asm-generic/io.h: Implement generic {read,write}s*()
  asm-generic/io.h: Reconcile I/O accessor overrides
  /dev/mem: Use more consistent data types
  Change xlate_dev_{kmem,mem}_ptr() prototypes
  ARM: ixp4xx: Properly override I/O accessors
  ARM: ixp4xx: Fix build with IXP4XX_INDIRECT_PCI
  ARM: ebsa110: Properly override I/O accessors
  ARC: Remove redundant PCI_IOBASE declaration
  documentation: memory-barriers: clarify relaxed io accessor semantics
  x86: io: implement dummy relaxed accessor macros for writes
  tile: io: implement dummy relaxed accessor macros for writes
  sparc: io: implement dummy relaxed accessor macros for writes
  powerpc: io: implement dummy relaxed accessor macros for writes
  parisc: io: implement dummy relaxed accessor macros for writes
  mn10300: io: implement dummy relaxed accessor macros for writes
  ...
2014-12-09 17:25:00 -08:00
Thierry Reding bfb111ec25 ARC: Remove redundant PCI_IOBASE declaration
ARC's asm/io.h includes the asm-generic/io.h which already defines the
PCI_IOBASE variable in exactly the same way, so it can be dropped from
the architecture specific header.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-11-10 12:14:53 +01:00
Alexey Brodkin 996bad6cb3 ARC: add power management options
Even though ARC cores itself don't have any power management except SLEEP
state it's possible to use power management features of selected peripherals.

For example USB OTG requires PM_RUNTIME which is only available if
kernel/power/Kconfig is sourced by architecture.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2014-11-03 18:05:43 +05:30
Linus Torvalds 816fb4175c The "weak" attribute is commonly used for the default version of a
function, where an architecture can override it by providing a strong
 version.
 
 Some header file declarations included the "weak" attribute.  That's
 error-prone because it causes every implementation to be weak, with no
 strong version at all, and the linker chooses one based on link order.
 
 What we want is the "weak" attribute only on the *definition* of the
 default implementation.  These changes remove "weak" from the declarations,
 leaving it on the default definitions.
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Merge tag 'remove-weak-declarations' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull weak function declaration removal from Bjorn Helgaas:
 "The "weak" attribute is commonly used for the default version of a
  function, where an architecture can override it by providing a strong
  version.

  Some header file declarations included the "weak" attribute.  That's
  error-prone because it causes every implementation to be weak, with no
  strong version at all, and the linker chooses one based on link order.

  What we want is the "weak" attribute only on the *definition* of the
  default implementation.  These changes remove "weak" from the
  declarations, leaving it on the default definitions"

* tag 'remove-weak-declarations' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  uprobes: Remove "weak" from function declarations
  memory-hotplug: Remove "weak" from memory_block_size_bytes() declaration
  kgdb: Remove "weak" from kgdb_arch_pc() declaration
  ARC: kgdb: generic kgdb_arch_pc() suffices
  vmcore: Remove "weak" from function declarations
  clocksource: Remove "weak" from clocksource_default_clock() declaration
  x86, intel-mid: Remove "weak" from function declarations
  audit: Remove "weak" from audit_classify_compat_syscall() declaration
2014-10-23 15:04:27 -07:00
Vineet Gupta 4fbf81ca53 ARC: kgdb: generic kgdb_arch_pc() suffices
The ARC version of kgdb_arch_pc() is identical to the generic version in
kernel/debug/debug_core.c.  Drop the ARC version so we use the generic one.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2014-10-22 16:14:04 -06:00
Linus Torvalds 3d430bdb74 Platform code reduction/moving-up (TB10X no longer needs any callbacks)
Updated Boot printing
 kgdb update for arc gdb 7.5
 Bug fixes (some marked for stable)
 More code refactoring/consolidation
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Merge tag 'arc-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc

Pull ARC updates from Vineet Gupta:
 "Sorry for the late pull request.  Current stuff was ready for a while
  but I was hoping to squeeze in support for almost ready ARC SDP
  platform (and avoid a 2nd pull request), however it seems there are
  still some loose ends which warrant more time.

   - Platform code reduction/moving-up (TB10X no longer needs any
     callbacks)
   - updated boot printing
   - kgdb update for arc gdb 7.5
   - bug fixes (some marked for stable)
   - more code refactoring/consolidation"

* tag 'arc-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARC: boot: cpu feature print enhancements
  ARC: boot: consolidate cross-checking of h/w and s/w
  ARC: unbork FPU save/restore
  ARC: remove extraneous __KERNEL__ guards
  ARC: Update order of registers in KGDB to match GDB 7.5
  ARC: Remove unneeded Kconfig entry NO_DMA
  ARC: BUG() dumps stack after @msg (@msg now same as in generic BUG))
  ARC: refactoring: reduce the scope of some local vars
  ARC: remove gcc mpy heuristics
  ARC: RIP @running_on_hw
  ARC: Update comments about uncached address space
  ARC: rename kconfig option for unaligned emulation
  ARC: [nsimosci] Allow "headless" models to boot
  ARC: [arcfpga] Get rid of ARC_BOARD_ANGEL4 and ARC_BOARD_ML509
  ARC: [arcfpga] Remove more dead code
  ARC: [plat*] move code out of .init_machine into common
  ARC: [arcfpga] consolidate machine description, DT
  ARC: Allow SMP kernel to build/boot on UP-only infrastructure
2014-10-21 07:50:02 -07:00
Linus Torvalds dbb885fecc Merge branch 'locking-arch-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull arch atomic cleanups from Ingo Molnar:
 "This is a series kept separate from the main locking tree, which
  cleans up and improves various details in the atomics type handling:

   - Remove the unused atomic_or_long() method

   - Consolidate and compress atomic ops implementations between
     architectures, to reduce linecount and to make it easier to add new
     ops.

   - Rewrite generic atomic support to only require cmpxchg() from an
     architecture - generate all other methods from that"

* 'locking-arch-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits)
  locking,arch: Use ACCESS_ONCE() instead of cast to volatile in atomic_read()
  locking, mips: Fix atomics
  locking, sparc64: Fix atomics
  locking,arch: Rewrite generic atomic support
  locking,arch,xtensa: Fold atomic_ops
  locking,arch,sparc: Fold atomic_ops
  locking,arch,sh: Fold atomic_ops
  locking,arch,powerpc: Fold atomic_ops
  locking,arch,parisc: Fold atomic_ops
  locking,arch,mn10300: Fold atomic_ops
  locking,arch,mips: Fold atomic_ops
  locking,arch,metag: Fold atomic_ops
  locking,arch,m68k: Fold atomic_ops
  locking,arch,m32r: Fold atomic_ops
  locking,arch,ia64: Fold atomic_ops
  locking,arch,hexagon: Fold atomic_ops
  locking,arch,cris: Fold atomic_ops
  locking,arch,avr32: Fold atomic_ops
  locking,arch,arm64: Fold atomic_ops
  locking,arch,arm: Fold atomic_ops
  ...
2014-10-13 15:48:00 +02:00
Vineet Gupta 5637208253 ARC: boot: cpu feature print enhancements
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2014-10-13 14:46:22 +05:30
Vineet Gupta c4b9856b5e ARC: boot: consolidate cross-checking of h/w and s/w
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2014-10-13 14:46:22 +05:30
Vineet Gupta 52e9bae938 ARC: unbork FPU save/restore
Fixes: 2ab402dfd6 "ARC: make start_thread() out-of-line"
CC: <stable@vger.kernel.org>  #3.16
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2014-10-13 14:46:21 +05:30
Vineet Gupta be64c997d9 ARC: remove extraneous __KERNEL__ guards
Verified by doing make headers_install as none of these files are
exported to userspace
2014-10-13 14:46:20 +05:30
Anton Kolesov ebc0c74e76 ARC: Update order of registers in KGDB to match GDB 7.5
Order of registers has changed in GDB moving from 6.8 to 7.5. This patch
updates KGDB to work properly with GDB 7.5, though makes it incompatible
with 6.8.

Signed-off-by: Anton Kolesov <Anton.Kolesov@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Cc: <stable@vger.kernel.org> #3.10, 3.12, 3.14, 3.16
2014-10-13 14:46:20 +05:30
Paul Bolle cdd4552686 ARC: Remove unneeded Kconfig entry NO_DMA
Architectures only need a Kconfig entry for NO_DMA if it is possible
that its value will be 'y'. For arc its value will always be 'n', making
it pointless. Remove it.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2014-10-13 14:46:19 +05:30
Vineet Gupta 3872d05299 ARC: BUG() dumps stack after @msg (@msg now same as in generic BUG))
ARC specific version (doesn't panic) still makes sense so that generic
code calling BUG doesn't panic and helps debugging more

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2014-10-13 14:46:18 +05:30
Vineet Gupta c59414cca1 ARC: refactoring: reduce the scope of some local vars
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2014-10-13 14:46:18 +05:30
Vineet Gupta 68d8feee85 ARC: remove gcc mpy heuristics
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2014-10-13 14:46:17 +05:30
Vineet Gupta 435abb6daf ARC: RIP @running_on_hw
* No active users of this flag anymore

* flag itself was no longer usable with new simualtor which acts just like
  hardware, not providing the special chip-id = 0xffff which good old
  ISS used to do.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2014-10-13 14:46:17 +05:30
Vineet Gupta c4aa49df4d ARC: Update comments about uncached address space
Suggested-by: Noam Camus <noamc@ezchip.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2014-10-13 14:46:16 +05:30
Vineet Gupta 1736a56f3d ARC: rename kconfig option for unaligned emulation
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2014-10-13 14:46:15 +05:30
Vineet Gupta 5c05483e2d ARC: [nsimosci] Allow "headless" models to boot
There are certain test configuration of virtual platform which don't
have any real console device (uart/pgu). So add tty0 as a fallback console
device to allow system to boot and be accessible via telnet

Otherwise with ttyS0 as only console, but 8250 disabled in kernel build,
init chokes.

Reported-by: Anton Kolesov <akolesov@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Cc: <stable@vger.kernel.org> #3.10, 3.12, 3.14, 3.16
2014-10-13 14:46:15 +05:30
Paul Bolle b4c43b4908 ARC: [arcfpga] Get rid of ARC_BOARD_ANGEL4 and ARC_BOARD_ML509
Commit c00bfd974f ("ARC: [arcfpga] Get rid of legacy BVCI latency unit
support") removed the Kconfig symbol ARC_HAS_BVCI_LAT_UNIT. And that
symbol's entry was the only place were the symbols ARC_BOARD_ANGEL4 and
ARC_BOARD_ML509 were used. So ARC_BOARD_ANGEL4 and ARC_BOARD_ML509 can
be removed too.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2014-10-13 14:46:14 +05:30
Vineet Gupta 72f933e77c ARC: [arcfpga] Remove more dead code
specifically after switching to generic early arc uart, whole bunch of
code is no longer needed

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2014-10-13 14:46:14 +05:30
Vineet Gupta d7f8a085d4 ARC: [plat*] move code out of .init_machine into common
All the platforms do the same thing in init_machine callback so move it
out of callback into caller of callback

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2014-10-13 14:46:13 +05:30
Vineet Gupta 70e956483e ARC: [arcfpga] consolidate machine description, DT
* AA4/ML509 have same machine descriptions
* Rename simulation machine description

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2014-10-13 14:46:12 +05:30
Vineet Gupta 619f30188f ARC: Allow SMP kernel to build/boot on UP-only infrastructure
In light of recent SNAFU with SMP build, allow simple platform to build
as SMP but run UP.

* Remove the dependence on simulation SMP extension to enable quick
  build/test iterations of SMP kernel.

* In absence of platform SMP registration, prevent the NULL smp feature
  name from borkign the system

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2014-09-27 14:49:01 +05:30
Peter Zijlstra c5c38ef3d7 irq_work: Introduce arch_irq_work_has_interrupt()
The nohz full code needs irq work to trigger its own interrupt so that
the subsystem can work even when the tick is stopped.

Lets introduce arch_irq_work_has_interrupt() that archs can override to
tell about their support for this ability.

Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
2014-09-13 18:38:07 +02:00
Noam Camus 014018e0b4 ARC: [mm] Fix compilation breakage
Structure name and variable name were erroneously interchanged

Signed-off-by: Noam Camus <noamc@ezchip.com>
Acked-by: Vineet Gupta <vgupta@synopsys.com>
[ Also removed pointless cast from "void *".  - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-09-03 10:08:50 -07:00
Pranith Kumar e356030519 flush_icache_range: export symbol to fix build errors
Fix building errors occuring due to a missing export of
flush_icache_range() in

kisskb.ellerman.id.au/kisskb/buildresult/11677809/

ERROR: "flush_icache_range" [drivers/misc/lkdtm.ko] undefined!

Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Vineet Gupta <vgupta@synopsys.com>	[arc]
Acked-by: Richard Kuo <rkuo@codeaurora.org>	[hexagon]
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Chris Zankel <chris@zankel.net>
Acked-by: Max Filippov <jcmvbkbc@gmail.com>	[xtensa]
Cc: Noam Camus <noamc@ezchip.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Acked-by: Zhigang Lu <zlu@tilera.com>		[tile]
Cc: Kirill Tkhai <tkhai@yandex.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-29 16:28:17 -07:00
Peter Zijlstra f7d11e93ee locking,arch,arc: Fold atomic_ops
Many of the atomic op implementations are the same except for one
instruction; fold the lot into a few CPP macros and reduce LoC.

This also prepares for easy addition of new ops.

Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Link: http://lkml.kernel.org/r/20140508135851.886055622@infradead.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-08-14 12:48:03 +02:00
Linus Torvalds 63b12bdb0d Merge branch 'signal-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/misc
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
  ...
2014-08-09 09:58:12 -07:00
Linus Torvalds e853ccf08b ARC changes for 3.17
Mostly cleanup/refactoring in core intc, cache flush, IPI send...
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Merge tag 'arc-v3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc

Pull ARC changes from Vineet Gupta:
 "Mostly cleanup/refactoring in core intc, cache flush, IPI send..."

* tag 'arc-v3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  mm, arc: remove obsolete pagefault oom killer comment
  ARC: help gcc elide icache helper for !SMP
  ARC: move common ops for line/full cache into helpers
  ARC: cache boot reporting updates
  ARC: [intc] mask/unmask can be hidden again
  ARC: [plat-arcfpga] No need for init_irq hack
  ARC: [intc] don't mask all IRQ by default
  ARC: prune extra header includes from smp.c
  ARC: update some comments
  ARC: [SMP] unify cpu private IRQ requests (TIMER/IPI)
2014-08-09 09:33:18 -07:00
David Rientjes 2a5e95d418 mm, arc: remove obsolete pagefault oom killer comment
Commit 609838cfed ("mm: invoke oom-killer from remaining unconverted page
fault handlers") converted arc to call pagefault_out_of_memory(), so remove
the comment about future conversion.

Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2014-08-07 16:10:59 -07:00
Richard Weinberger 5290dd79c0 arc: Use sigsp()
Use sigsp() instead of the open coded variant.

Signed-off-by: Richard Weinberger <richard@nod.at>
Acked-by: Vineet Gupta <vgupta@synopsys.com>
2014-08-06 13:03:45 +02:00
Richard Weinberger f6dd2a3f1f arc: Use get_signal() signal_setup_done()
Use the more generic functions get_signal() signal_setup_done()
for signal delivery.

Signed-off-by: Richard Weinberger <richard@nod.at>
Acked-by: Vineet Gupta <vgupta@synopsys.com>
2014-08-06 12:56:16 +02:00
Linus Torvalds 79eb238c76 TTY / Serial driver update for 3.17-rc1
Here's the big tty / serial driver update for 3.17-rc1.
 
 Nothing major, just a number of fixes and new features for different
 serial drivers, and some more tty core fixes and documentation of the
 tty locks.
 
 All of these have been in linux-next for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty / serial driver update from Greg KH:
 "Here's the big tty / serial driver update for 3.17-rc1.

  Nothing major, just a number of fixes and new features for different
  serial drivers, and some more tty core fixes and documentation of the
  tty locks.

  All of these have been in linux-next for a while"

* tag 'tty-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (82 commits)
  tty/n_gsm.c: fix a memory leak in gsmld_open
  pch_uart: don't hardcode PCI slot to get DMA device
  tty: n_gsm, use setup_timer
  Revert "ARC: [arcfpga] stdout-path now suffices for earlycon/console"
  serial: sc16is7xx: Correct initialization of s->clk
  serial: 8250_dw: Add support for deferred probing
  serial: 8250_dw: Add optional reset control support
  serial: st-asc: Fix overflow in baudrate calculation
  serial: st-asc: Don't call BUG in asc_console_setup()
  tty: serial: msm: Make of_device_id array const
  tty/n_gsm.c: get gsm->num after gsm_activate_mux
  serial/core: Fix too big allocation for attribute member
  drivers/tty/serial: use correct type for dma_map/unmap
  serial: altera_jtaguart: Fix putchar function passed to uart_console_write()
  serial/uart/8250: Add tunable RX interrupt trigger I/F of FIFO buffers
  Serial: allow port drivers to have a default attribute group
  tty: kgdb_nmi: Automatically manage tty enable
  serial: altera_jtaguart: Adpot uart_console_write()
  serial: samsung: improve code clarity by defining a variable
  serial: samsung: correct the case and default order in switch
  ...
2014-08-04 18:51:19 -07:00
Linus Torvalds ef35ad26f8 Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf changes from Ingo Molnar:
 "Kernel side changes:

   - Consolidate the PMU interrupt-disabled code amongst architectures
     (Vince Weaver)

   - misc fixes

  Tooling changes (new features, user visible changes):

   - Add support for pagefault tracing in 'trace', please see multiple
     examples in the changeset messages (Stanislav Fomichev).

   - Add pagefault statistics in 'trace' (Stanislav Fomichev)

   - Add header for columns in 'top' and 'report' TUI browsers (Jiri
     Olsa)

   - Add pagefault statistics in 'trace' (Stanislav Fomichev)

   - Add IO mode into timechart command (Stanislav Fomichev)

   - Fallback to syscalls:* when raw_syscalls:* is not available in the
     perl and python perf scripts.  (Daniel Bristot de Oliveira)

   - Add --repeat global option to 'perf bench' to be used in benchmarks
     such as the existing 'futex' one, that was modified to use it
     instead of a local option.  (Davidlohr Bueso)

   - Fix fd -> pathname resolution in 'trace', be it using /proc or a
     vfs_getname probe point.  (Arnaldo Carvalho de Melo)

   - Add suggestion of how to set perf_event_paranoid sysctl, to help
     non-root users trying tools like 'trace' to get a working
     environment.  (Arnaldo Carvalho de Melo)

   - Updates from trace-cmd for traceevent plugin_kvm plus args cleanup
     (Steven Rostedt, Jan Kiszka)

   - Support S/390 in 'perf kvm stat' (Alexander Yarygin)

  Tooling infrastructure changes:

   - Allow reserving a row for header purposes in the hists browser
     (Arnaldo Carvalho de Melo)

   - Various fixes and prep work related to supporting Intel PT (Adrian
     Hunter)

   - Introduce multiple debug variables control (Jiri Olsa)

   - Add callchain and additional sample information for python scripts
     (Joseph Schuchart)

   - More prep work to support Intel PT: (Adrian Hunter)
     - Polishing 'script' BTS output
     - 'inject' can specify --kallsym
     - VDSO is per machine, not a global var
     - Expose data addr lookup functions previously private to 'script'
     - Large mmap fixes in events processing

   - Include standard stringify macros in power pc code (Sukadev
     Bhattiprolu)

  Tooling cleanups:

   - Convert open coded equivalents to asprintf() (Andy Shevchenko)

   - Remove needless reassignments in 'trace' (Arnaldo Carvalho de Melo)

   - Cache the is_exit syscall test in 'trace) (Arnaldo Carvalho de
     Melo)

   - No need to reimplement err() in 'perf bench sched-messaging', drop
     barf().  (Davidlohr Bueso).

   - Remove ev_name argument from perf_evsel__hists_browse, can be
     obtained from the other parameters.  (Jiri Olsa)

  Tooling fixes:

   - Fix memory leak in the 'sched-messaging' perf bench test.
     (Davidlohr Bueso)

   - The -o and -n 'perf bench mem' options are mutually exclusive, emit
     error when both are specified.  (Davidlohr Bueso)

   - Fix scrollbar refresh row index in the ui browser, problem exposed
     now that headers will be added and will be allowed to be switched
     on/off.  (Jiri Olsa)

   - Handle the num array type in python properly (Sebastian Andrzej
     Siewior)

   - Fix wrong condition for allocation failure (Jiri Olsa)

   - Adjust callchain based on DWARF debug info on powerpc (Sukadev
     Bhattiprolu)

   - Fix a risk for doing free on uninitialized pointer in traceevent
     lib (Rickard Strandqvist)

   - Update attr test with PERF_FLAG_FD_CLOEXEC flag (Jiri Olsa)

   - Enable close-on-exec flag on perf file descriptor (Yann Droneaud)

   - Fix build on gcc 4.4.7 (Arnaldo Carvalho de Melo)

   - Event ordering fixes (Jiri Olsa)"

* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (123 commits)
  Revert "perf tools: Fix jump label always changing during tracing"
  perf tools: Fix perf usage string leftover
  perf: Check permission only for parent tracepoint event
  perf record: Store PERF_RECORD_FINISHED_ROUND only for nonempty rounds
  perf record: Always force PERF_RECORD_FINISHED_ROUND event
  perf inject: Add --kallsyms parameter
  perf tools: Expose 'addr' functions so they can be reused
  perf session: Fix accounting of ordered samples queue
  perf powerpc: Include util/util.h and remove stringify macros
  perf tools: Fix build on gcc 4.4.7
  perf tools: Add thread parameter to vdso__dso_findnew()
  perf tools: Add dso__type()
  perf tools: Separate the VDSO map name from the VDSO dso name
  perf tools: Add vdso__new()
  perf machine: Fix the lifetime of the VDSO temporary file
  perf tools: Group VDSO global variables into a structure
  perf session: Add ability to skip 4GiB or more
  perf session: Add ability to 'skip' a non-piped event stream
  perf tools: Pass machine to vdso__dso_findnew()
  perf tools: Add dso__data_size()
  ...
2014-08-04 16:09:53 -07:00
Ingo Molnar 5030c69755 Linux 3.16-rc7
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Merge tag 'v3.16-rc7' into perf/core, to merge in the latest fixes before applying new changes

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-07-28 10:00:33 +02:00
Greg Kroah-Hartman 22524b02b1 Revert "ARC: [arcfpga] stdout-path now suffices for earlycon/console"
This reverts commit 9da433c0a0.

Vineet writes:

Could you please revert this single patch from tty-next for 3.17 as the
needed core changes are not yet finalized.

Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-07-27 23:10:43 -07:00
Vineet Gupta af5abf1b04 ARC: help gcc elide icache helper for !SMP
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2014-07-23 11:30:24 +05:30
Vineet Gupta 1b1a22b133 ARC: move common ops for line/full cache into helpers
INV cmd for dcache provides 2 modes discard or wback-before-discard.
One is default and other needs to be set, if so desired. This is common
for line-op/entire-cache-op. So refactor them out into a helper

Doesn't affect generated code but paves way for any common
micro-optimization.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2014-07-23 11:30:20 +05:30
Vineet Gupta da40ff48bd ARC: cache boot reporting updates
* print aliasing or not, VIPT/PIPT etc
* compress param storage using bitfields
* more use of IS_ENABLED to de-uglify code

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2014-07-23 11:22:10 +05:30
Vineet Gupta 590892deb6 ARC: [intc] mask/unmask can be hidden again
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2014-07-23 11:22:02 +05:30
Vineet Gupta 25c7c11fa5 ARC: [plat-arcfpga] No need for init_irq hack
With all IRQs unmasked by default on all cores, it is no longer needed
to unmask them explicitly.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2014-07-23 11:21:10 +05:30