linux-toradex.git/arch/m68k, branch v4.3.2

m68k/defconfig: Update defconfigs for v4.3-rc1

2015-09-28T08:01:09+00:00

Signed-off-by: Geert Uytterhoeven

m68k: Define asmlinkage_protect

2015-09-28T07:59:45+00:00

Make sure the compiler does not modify arguments of syscall functions.
This can happen if the compiler generates a tailcall to another
function.  For example, without asmlinkage_protect sys_openat is compiled
into this function:

sys_openat:
	clr.l %d0
	move.w 18(%sp),%d0
	move.l %d0,16(%sp)
	jbra do_sys_open

Note how the fourth argument is modified in place, modifying the register
%d4 that gets restored from this stack slot when the function returns to
user-space.  The caller may expect the register to be unmodified across
system calls.

Signed-off-by: Andreas Schwab 
Signed-off-by: Geert Uytterhoeven 
Cc: stable@vger.kernel.org

m68k: Wire up membarrier

2015-09-28T07:59:44+00:00

$ ./membarrier_test
membarrier MEMBARRIER_CMD_QUERY syscall available.
membarrier: MEMBARRIER_CMD_SHARED success.
membarrier: tests done!
$

Signed-off-by: Geert Uytterhoeven 
Acked-by: Greg Ungerer

m68k: Wire up userfaultfd

2015-09-28T07:59:44+00:00

$ ./userfaultfd 10 99
nr_pages: 2560, nr_pages_per_cpu: 2560
bounces: 98, mode: racing, userfaults: 1121
bounces: 97, mode: rnd, userfaults: 977
bounces: 96, mode:, userfaults: 1119
bounces: 95, mode: rnd racing ver poll, userfaults: 1040
bounces: 94, mode: racing ver poll, userfaults: 1022
bounces: 93, mode: rnd ver poll, userfaults: 946
bounces: 92, mode: ver poll, userfaults: 1115
bounces: 91, mode: rnd racing poll, userfaults: 977
bounces: 90, mode: racing poll, userfaults: 899
bounces: 89, mode: rnd poll, userfaults: 881
bounces: 88, mode: poll, userfaults: 1069
bounces: 87, mode: rnd racing ver, userfaults: 1114
bounces: 86, mode: racing ver, userfaults: 1109
bounces: 85, mode: rnd ver, userfaults: 1165
bounces: 84, mode: ver, userfaults: 1107
bounces: 83, mode: rnd racing, userfaults: 1134
bounces: 82, mode: racing, userfaults: 1105
bounces: 81, mode: rnd, userfaults: 1323
bounces: 80, mode:, userfaults: 1103
bounces: 79, mode: rnd racing ver poll, userfaults: 909
bounces: 78, mode: racing ver poll, userfaults: 1095
bounces: 77, mode: rnd ver poll, userfaults: 951
bounces: 76, mode: ver poll, userfaults: 1099
bounces: 75, mode: rnd racing poll, userfaults: 1035
bounces: 74, mode: racing poll, userfaults: 1097
bounces: 73, mode: rnd poll, userfaults: 1159
bounces: 72, mode: poll, userfaults: 1042
bounces: 71, mode: rnd racing ver, userfaults: 848
bounces: 70, mode: racing ver, userfaults: 1093
bounces: 69, mode: rnd ver, userfaults: 892
bounces: 68, mode: ver, userfaults: 1091
bounces: 67, mode: rnd racing, userfaults: 1219
bounces: 66, mode: racing, userfaults: 1089
bounces: 65, mode: rnd, userfaults: 988
bounces: 64, mode:, userfaults: 1087
bounces: 63, mode: rnd racing ver poll, userfaults: 882
bounces: 62, mode: racing ver poll, userfaults: 984
bounces: 61, mode: rnd ver poll, userfaults: 701
bounces: 60, mode: ver poll, userfaults: 1071
bounces: 59, mode: rnd racing poll, userfaults: 1137
bounces: 58, mode: racing poll, userfaults: 1032
bounces: 57, mode: rnd poll, userfaults: 911
bounces: 56, mode: poll, userfaults: 1079
bounces: 55, mode: rnd racing ver, userfaults: 1106
bounces: 54, mode: racing ver, userfaults: 1077
bounces: 53, mode: rnd ver, userfaults: 886
bounces: 52, mode: ver, userfaults: 1075
bounces: 51, mode: rnd racing, userfaults: 1101
bounces: 50, mode: racing, userfaults: 1073
bounces: 49, mode: rnd, userfaults: 1070
bounces: 48, mode:, userfaults: 1071
bounces: 47, mode: rnd racing ver poll, userfaults: 1077
bounces: 46, mode: racing ver poll, userfaults: 910
bounces: 45, mode: rnd ver poll, userfaults: 1063
bounces: 44, mode: ver poll, userfaults: 1028
bounces: 43, mode: rnd racing poll, userfaults: 1043
bounces: 42, mode: racing poll, userfaults: 1065
bounces: 41, mode: rnd poll, userfaults: 912
bounces: 40, mode: poll, userfaults: 1063
bounces: 39, mode: rnd racing ver, userfaults: 880
bounces: 38, mode: racing ver, userfaults: 1061
bounces: 37, mode: rnd ver, userfaults: 1144
bounces: 36, mode: ver, userfaults: 1059
bounces: 35, mode: rnd racing, userfaults: 967
bounces: 34, mode: racing, userfaults: 1057
bounces: 33, mode: rnd, userfaults: 1076
bounces: 32, mode:, userfaults: 1055
bounces: 31, mode: rnd racing ver poll, userfaults: 997
bounces: 30, mode: racing ver poll, userfaults: 1053
bounces: 29, mode: rnd ver poll, userfaults: 968
bounces: 28, mode: ver poll, userfaults: 978
bounces: 27, mode: rnd racing poll, userfaults: 1008
bounces: 26, mode: racing poll, userfaults: 1049
bounces: 25, mode: rnd poll, userfaults: 900
bounces: 24, mode: poll, userfaults: 1047
bounces: 23, mode: rnd racing ver, userfaults: 988
bounces: 22, mode: racing ver, userfaults: 1045
bounces: 21, mode: rnd ver, userfaults: 1027
bounces: 20, mode: ver, userfaults: 1043
bounces: 19, mode: rnd racing, userfaults: 1017
bounces: 18, mode: racing, userfaults: 1041
bounces: 17, mode: rnd, userfaults: 979
bounces: 16, mode:, userfaults: 1039
bounces: 15, mode: rnd racing ver poll, userfaults: 1134
bounces: 14, mode: racing ver poll, userfaults: 1037
bounces: 13, mode: rnd ver poll, userfaults: 1046
bounces: 12, mode: ver poll, userfaults: 1035
bounces: 11, mode: rnd racing poll, userfaults: 1060
bounces: 10, mode: racing poll, userfaults: 1033
bounces: 9, mode: rnd poll, userfaults: 1003
bounces: 8, mode: poll, userfaults: 929
bounces: 7, mode: rnd racing ver, userfaults: 964
bounces: 6, mode: racing ver, userfaults: 1029
bounces: 5, mode: rnd ver, userfaults: 1053
bounces: 4, mode: ver, userfaults: 1027
bounces: 3, mode: rnd racing, userfaults: 863
bounces: 2, mode: racing, userfaults: 1025
bounces: 1, mode: rnd, userfaults: 1043
bounces: 0, mode:, userfaults: 950

Signed-off-by: Geert Uytterhoeven 
Acked-by: Greg Ungerer

m68k: Wire up direct socket calls

2015-09-28T07:59:43+00:00

Signed-off-by: Geert Uytterhoeven 
Acked-by: Greg Ungerer

genirq: Remove irq argument from irq flow handlers

2015-09-16T13:47:51+00:00

Most interrupt flow handlers do not use the irq argument. Those few
which use it can retrieve the irq number from the irq descriptor.

Remove the argument.

Search and replace was done with coccinelle and some extra helper
scripts around it. Thanks to Julia for her help!

Signed-off-by: Thomas Gleixner 
Cc: Julia Lawall 
Cc: Jiang Liu

kexec: split kexec_load syscall from kexec core code

2015-09-10T20:29:01+00:00

There are two kexec load syscalls, kexec_load another and kexec_file_load.
 kexec_file_load has been splited as kernel/kexec_file.c.  In this patch I
split kexec_load syscall code to kernel/kexec.c.

And add a new kconfig option KEXEC_CORE, so we can disable kexec_load and
use kexec_file_load only, or vice verse.

The original requirement is from Ted Ts'o, he want kexec kernel signature
being checked with CONFIG_KEXEC_VERIFY_SIG enabled.  But kexec-tools use
kexec_load syscall can bypass the checking.

Vivek Goyal proposed to create a common kconfig option so user can compile
in only one syscall for loading kexec kernel.  KEXEC/KEXEC_FILE selects
KEXEC_CORE so that old config files still work.

Because there's general code need CONFIG_KEXEC_CORE, so I updated all the
architecture Kconfig with a new option KEXEC_CORE, and let KEXEC selects
KEXEC_CORE in arch Kconfig.  Also updated general kernel code with to
kexec_load syscall.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Dave Young 
Cc: Eric W. Biederman 
Cc: Vivek Goyal 
Cc: Petr Tesarik 
Cc: Theodore Ts'o 
Cc: Josh Boyer 
Cc: David Howells 
Cc: Geert Uytterhoeven 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu

2015-09-08T18:31:33+00:00

Pull m68k/colfire fixes from Greg Ungerer:
 "Only a couple of patches this time.  One migrating the clock driver
  code to the new set-state interface.  The other cleaning up to use the
  PFN_DOWN macro"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
  m68k/coldfire: use PFN_DOWN macro
  m68k/coldfire/pit: Migrate to new 'set-state' interface

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

2015-09-03T22:46:07+00:00

Pull locking and atomic updates from Ingo Molnar:
 "Main changes in this cycle are:

   - Extend atomic primitives with coherent logic op primitives
     (atomic_{or,and,xor}()) and deprecate the old partial APIs
     (atomic_{set,clear}_mask())

     The old ops were incoherent with incompatible signatures across
     architectures and with incomplete support.  Now every architecture
     supports the primitives consistently (by Peter Zijlstra)

   - Generic support for 'relaxed atomics':

       - _acquire/release/relaxed() flavours of xchg(), cmpxchg() and {add,sub}_return()
       - atomic_read_acquire()
       - atomic_set_release()

     This came out of porting qwrlock code to arm64 (by Will Deacon)

   - Clean up the fragile static_key APIs that were causing repeat bugs,
     by introducing a new one:

       DEFINE_STATIC_KEY_TRUE(name);
       DEFINE_STATIC_KEY_FALSE(name);

     which define a key of different types with an initial true/false
     value.

     Then allow:

       static_branch_likely()
       static_branch_unlikely()

     to take a key of either type and emit the right instruction for the
     case.  To be able to know the 'type' of the static key we encode it
     in the jump entry (by Peter Zijlstra)

   - Static key self-tests (by Jason Baron)

   - qrwlock optimizations (by Waiman Long)

   - small futex enhancements (by Davidlohr Bueso)

   - ... and misc other changes"

* 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (63 commits)
  jump_label/x86: Work around asm build bug on older/backported GCCs
  locking, ARM, atomics: Define our SMP atomics in terms of _relaxed() operations
  locking, include/llist: Use linux/atomic.h instead of asm/cmpxchg.h
  locking/qrwlock: Make use of _{acquire|release|relaxed}() atomics
  locking/qrwlock: Implement queue_write_unlock() using smp_store_release()
  locking/lockref: Remove homebrew cmpxchg64_relaxed() macro definition
  locking, asm-generic: Add _{relaxed|acquire|release}() variants for 'atomic_long_t'
  locking, asm-generic: Rework atomic-long.h to avoid bulk code duplication
  locking/atomics: Add _{acquire|release|relaxed}() variants of some atomic operations
  locking, compiler.h: Cast away attributes in the WRITE_ONCE() magic
  locking/static_keys: Make verify_keys() static
  jump label, locking/static_keys: Update docs
  locking/static_keys: Provide a selftest
  jump_label: Provide a self-test
  s390/uaccess, locking/static_keys: employ static_branch_likely()
  x86, tsc, locking/static_keys: Employ static_branch_likely()
  locking/static_keys: Add selftest
  locking/static_keys: Add a new static_key interface
  locking/static_keys: Rework update logic
  locking/static_keys: Add static_key_{en,dis}able() helpers
  ...

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

2015-09-03T15:08:17+00:00

Pull networking updates from David Miller:
 "Another merge window, another set of networking changes.  I've heard
  rumblings that the lightweight tunnels infrastructure has been voted
  networking change of the year.  But what do I know?

   1) Add conntrack support to openvswitch, from Joe Stringer.

   2) Initial support for VRF (Virtual Routing and Forwarding), which
      allows the segmentation of routing paths without using multiple
      devices.  There are some semantic kinks to work out still, but
      this is a reasonably strong foundation.  From David Ahern.

   3) Remove spinlock fro act_bpf fast path, from Alexei Starovoitov.

   4) Ignore route nexthops with a link down state in ipv6, just like
      ipv4.  From Andy Gospodarek.

   5) Remove spinlock from fast path of act_gact and act_mirred, from
      Eric Dumazet.

   6) Document the DSA layer, from Florian Fainelli.

   7) Add netconsole support to bcmgenet, systemport, and DSA.  Also
      from Florian Fainelli.

   8) Add Mellanox Switch Driver and core infrastructure, from Jiri
      Pirko.

   9) Add support for "light weight tunnels", which allow for
      encapsulation and decapsulation without bearing the overhead of a
      full blown netdevice.  From Thomas Graf, Jiri Benc, and a cast of
      others.

  10) Add Identifier Locator Addressing support for ipv6, from Tom
      Herbert.

  11) Support fragmented SKBs in iwlwifi, from Johannes Berg.

  12) Allow perf PMUs to be accessed from eBPF programs, from Kaixu Xia.

  13) Add BQL support to 3c59x driver, from Loganaden Velvindron.

  14) Stop using a zero TX queue length to mean that a device shouldn't
      have a qdisc attached, use an explicit flag instead.  From Phil
      Sutter.

  15) Use generic geneve netdevice infrastructure in openvswitch, from
      Pravin B Shelar.

  16) Add infrastructure to avoid re-forwarding a packet in software
      that was already forwarded by a hardware switch.  From Scott
      Feldman.

  17) Allow AF_PACKET fanout function to be implemented in a bpf
      program, from Willem de Bruijn"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1458 commits)
  netfilter: nf_conntrack: make nf_ct_zone_dflt built-in
  netfilter: nf_dup{4, 6}: fix build error when nf_conntrack disabled
  net: fec: clear receive interrupts before processing a packet
  ipv6: fix exthdrs offload registration in out_rt path
  xen-netback: add support for multicast control
  bgmac: Update fixed_phy_register()
  sock, diag: fix panic in sock_diag_put_filterinfo
  flow_dissector: Use 'const' where possible.
  flow_dissector: Fix function argument ordering dependency
  ixgbe: Resolve "initialized field overwritten" warnings
  ixgbe: Remove bimodal SR-IOV disabling
  ixgbe: Add support for reporting 2.5G link speed
  ixgbe: fix bounds checking in ixgbe_setup_tc for 82598
  ixgbe: support for ethtool set_rxfh
  ixgbe: Avoid needless PHY access on copper phys
  ixgbe: cleanup to use cached mask value
  ixgbe: Remove second instance of lan_id variable
  ixgbe: use kzalloc for allocating one thing
  flow: Move __get_hash_from_flowi{4,6} into flow_dissector.c
  ixgbe: Remove unused PCI bus types
  ...