Commit Graph

1339 Commits

Author SHA1 Message Date
Dave Airlie
94000cc329 Linux 4.10-rc8
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Merge tag 'v4.10-rc8' into drm-next

Linux 4.10-rc8

Backmerge Linus rc8 to fix some conflicts, but also
to avoid pulling it in via a fixes pull from someone.
2017-02-23 12:10:12 +10:00
Andrea Arcangeli
7a0c4cf85b userfaultfd: selftest: test UFFDIO_ZEROPAGE on all memory types
This will verify -EINVAL is returned with hugetlbfs/shmem and it'll do a
functional test of UFFDIO_ZEROPAGE on anonymous memory.

Link: http://lkml.kernel.org/r/20161216144821.5183-42-aarcange@redhat.com
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Cc: Hillf Danton <hillf.zj@alibaba-inc.com>
Cc: Michael Rapoport <RAPOPORT@il.ibm.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-22 16:41:29 -08:00
Mike Rapoport
da5502c0a3 userfaultfd: non-cooperative: selftest: add test for FORK, MADVDONTNEED and REMAP events
Add test for userfaultfd events used in non-cooperative scenario when
the process that monitors the userfaultfd and handles user faults is not
the same process that causes the page faults.

Link: http://lkml.kernel.org/r/20161216144821.5183-41-aarcange@redhat.com
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Cc: Hillf Danton <hillf.zj@alibaba-inc.com>
Cc: Michael Rapoport <RAPOPORT@il.ibm.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-22 16:41:29 -08:00
Mike Rapoport
aa0d272174 userfaultfd: non-cooperative: selftest: add ufd parameter to copy_page
With future addition of event tests, copy_page will be called with
different userfault file descriptors

Link: http://lkml.kernel.org/r/20161216144821.5183-40-aarcange@redhat.com
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Cc: Hillf Danton <hillf.zj@alibaba-inc.com>
Cc: Michael Rapoport <RAPOPORT@il.ibm.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-22 16:41:29 -08:00
Mike Rapoport
6228b8f2d1 userfaultfd: non-cooperative: selftest: introduce userfaultfd_open
userfaultfd_open will be needed by the non cooperative selftest.

Link: http://lkml.kernel.org/r/20161216144821.5183-39-aarcange@redhat.com
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Cc: Hillf Danton <hillf.zj@alibaba-inc.com>
Cc: Michael Rapoport <RAPOPORT@il.ibm.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-22 16:41:29 -08:00
Mike Rapoport
419624daf0 userfaultfd: shmem: add userfaultfd_shmem test
The test verifies that anonymous shared mapping can be used with userfault
using the existing testing method.  The shared memory area is allocated
using mmap(..., MAP_SHARED | MAP_ANONYMOUS, ...) and released using
madvise(MADV_REMOVE)

Link: http://lkml.kernel.org/r/20161216144821.5183-35-aarcange@redhat.com
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Cc: Hillf Danton <hillf.zj@alibaba-inc.com>
Cc: Michael Rapoport <RAPOPORT@il.ibm.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-22 16:41:29 -08:00
Mike Rapoport
cac673292b userfaultfd: shmem: allow registration of shared memory ranges
Expand the userfaultfd_register/unregister routines to allow shared
memory VMAs.

Currently, there is no UFFDIO_ZEROPAGE and write-protection support for
shared memory VMAs, which is reflected in ioctl methods supported by
uffdio_register.

Link: http://lkml.kernel.org/r/20161216144821.5183-34-aarcange@redhat.com
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Cc: Hillf Danton <hillf.zj@alibaba-inc.com>
Cc: Michael Rapoport <RAPOPORT@il.ibm.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-22 16:41:28 -08:00
Mike Kravetz
9903bd7b73 userfaultfd: hugetlbfs: add userfaultfd_hugetlb test
Test userfaultfd hugetlb functionality by using the existing testing
method (in userfaultfd.c).  Instead of an anonymous memeory, a hugetlbfs
file is mmap'ed private.  In this way fallocate hole punch can be used
to release pages.  This is because madvise(MADV_DONTNEED) is not
supported for huge pages.

Use the same file, but create wrappers for allocating ranges and
releasing pages.  Compile userfaultfd.c with HUGETLB_TEST defined to
produce an executable to test userfaultfd hugetlb functionality.

Link: http://lkml.kernel.org/r/20161216144821.5183-23-aarcange@redhat.com
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Cc: Hillf Danton <hillf.zj@alibaba-inc.com>
Cc: Michael Rapoport <RAPOPORT@il.ibm.com>
Cc: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-22 16:41:28 -08:00
Linus Torvalds
b2064617c7 driver core patches for 4.11-rc1
Here is the "small" driver core patches for 4.11-rc1.
 
 Not much here, some firmware documentation and self-test updates, a
 debugfs code formatting issue, and a new feature for call_usermodehelper
 to make it more robust on systems that want to lock it down in a more
 secure way.
 
 All of these have been linux-next for a while now with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core updates from Greg KH:
 "Here is the "small" driver core patches for 4.11-rc1.

  Not much here, some firmware documentation and self-test updates, a
  debugfs code formatting issue, and a new feature for call_usermodehelper
  to make it more robust on systems that want to lock it down in a more
  secure way.

  All of these have been linux-next for a while now with no reported
  issues"

* tag 'driver-core-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  kernfs: handle null pointers while printing node name and path
  Introduce STATIC_USERMODEHELPER to mediate call_usermodehelper()
  Make static usermode helper binaries constant
  kmod: make usermodehelper path a const string
  firmware: revamp firmware documentation
  selftests: firmware: send expected errors to /dev/null
  selftests: firmware: only modprobe if driver is missing
  platform: Print the resource range if device failed to claim
  kref: prefer atomic_inc_not_zero to atomic_add_unless
  debugfs: improve formatting of debugfs_real_fops()
2017-02-22 11:44:32 -08:00
Linus Torvalds
e30aee9e10 char/misc driver patches for 4.11-rc1
Here is the big char/misc driver patchset for 4.11-rc1.
 
 Lots of different driver subsystems updated here.  Rework for the hyperv
 subsystem to handle new platforms better, mei and w1 and extcon driver
 updates, as well as a number of other "minor" driver updates.  Full
 details are in the shortlog below.
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver updates from Greg KH:
 "Here is the big char/misc driver patchset for 4.11-rc1.

  Lots of different driver subsystems updated here: rework for the
  hyperv subsystem to handle new platforms better, mei and w1 and extcon
  driver updates, as well as a number of other "minor" driver updates.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'char-misc-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (169 commits)
  goldfish: Sanitize the broken interrupt handler
  x86/platform/goldfish: Prevent unconditional loading
  vmbus: replace modulus operation with subtraction
  vmbus: constify parameters where possible
  vmbus: expose hv_begin/end_read
  vmbus: remove conditional locking of vmbus_write
  vmbus: add direct isr callback mode
  vmbus: change to per channel tasklet
  vmbus: put related per-cpu variable together
  vmbus: callback is in softirq not workqueue
  binder: Add support for file-descriptor arrays
  binder: Add support for scatter-gather
  binder: Add extra size to allocator
  binder: Refactor binder_transact()
  binder: Support multiple /dev instances
  binder: Deal with contexts in debugfs
  binder: Support multiple context managers
  binder: Split flat_binder_object
  auxdisplay: ht16k33: remove private workqueue
  auxdisplay: ht16k33: rework input device initialization
  ...
2017-02-22 11:38:22 -08:00
Linus Torvalds
3051bf36c2 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller:
 "Highlights:

   1) Support TX_RING in AF_PACKET TPACKET_V3 mode, from Sowmini
      Varadhan.

   2) Simplify classifier state on sk_buff in order to shrink it a bit.
      From Willem de Bruijn.

   3) Introduce SIPHASH and it's usage for secure sequence numbers and
      syncookies. From Jason A. Donenfeld.

   4) Reduce CPU usage for ICMP replies we are going to limit or
      suppress, from Jesper Dangaard Brouer.

   5) Introduce Shared Memory Communications socket layer, from Ursula
      Braun.

   6) Add RACK loss detection and allow it to actually trigger fast
      recovery instead of just assisting after other algorithms have
      triggered it. From Yuchung Cheng.

   7) Add xmit_more and BQL support to mvneta driver, from Simon Guinot.

   8) skb_cow_data avoidance in esp4 and esp6, from Steffen Klassert.

   9) Export MPLS packet stats via netlink, from Robert Shearman.

  10) Significantly improve inet port bind conflict handling, especially
      when an application is restarted and changes it's setting of
      reuseport. From Josef Bacik.

  11) Implement TX batching in vhost_net, from Jason Wang.

  12) Extend the dummy device so that VF (virtual function) features,
      such as configuration, can be more easily tested. From Phil
      Sutter.

  13) Avoid two atomic ops per page on x86 in bnx2x driver, from Eric
      Dumazet.

  14) Add new bpf MAP, implementing a longest prefix match trie. From
      Daniel Mack.

  15) Packet sample offloading support in mlxsw driver, from Yotam Gigi.

  16) Add new aquantia driver, from David VomLehn.

  17) Add bpf tracepoints, from Daniel Borkmann.

  18) Add support for port mirroring to b53 and bcm_sf2 drivers, from
      Florian Fainelli.

  19) Remove custom busy polling in many drivers, it is done in the core
      networking since 4.5 times. From Eric Dumazet.

  20) Support XDP adjust_head in virtio_net, from John Fastabend.

  21) Fix several major holes in neighbour entry confirmation, from
      Julian Anastasov.

  22) Add XDP support to bnxt_en driver, from Michael Chan.

  23) VXLAN offloads for enic driver, from Govindarajulu Varadarajan.

  24) Add IPVTAP driver (IP-VLAN based tap driver) from Sainath Grandhi.

  25) Support GRO in IPSEC protocols, from Steffen Klassert"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1764 commits)
  Revert "ath10k: Search SMBIOS for OEM board file extension"
  net: socket: fix recvmmsg not returning error from sock_error
  bnxt_en: use eth_hw_addr_random()
  bpf: fix unlocking of jited image when module ronx not set
  arch: add ARCH_HAS_SET_MEMORY config
  net: napi_watchdog() can use napi_schedule_irqoff()
  tcp: Revert "tcp: tcp_probe: use spin_lock_bh()"
  net/hsr: use eth_hw_addr_random()
  net: mvpp2: enable building on 64-bit platforms
  net: mvpp2: switch to build_skb() in the RX path
  net: mvpp2: simplify MVPP2_PRS_RI_* definitions
  net: mvpp2: fix indentation of MVPP2_EXT_GLOBAL_CTRL_DEFAULT
  net: mvpp2: remove unused register definitions
  net: mvpp2: simplify mvpp2_bm_bufs_add()
  net: mvpp2: drop useless fields in mvpp2_bm_pool and related code
  net: mvpp2: remove unused 'tx_skb' field of 'struct mvpp2_tx_queue'
  net: mvpp2: release reference to txq_cpu[] entry after unmapping
  net: mvpp2: handle too large value in mvpp2_rx_time_coal_set()
  net: mvpp2: handle too large value handling in mvpp2_rx_pkts_coal_set()
  net: mvpp2: remove useless arguments in mvpp2_rx_{pkts, time}_coal_set
  ...
2017-02-22 10:15:09 -08:00
Linus Torvalds
8b5abde16b Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 mm updates from Ingo Molnar:
 "A laundry list of changes: KASAN improvements/fixes for ptdump, a
  self-test fix, PAT cleanup and wbinvd() avoidance, removal of stale
  code and documentation updates"

* 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mm/ptdump: Add address marker for KASAN shadow region
  x86/mm/ptdump: Optimize check for W+X mappings for CONFIG_KASAN=y
  x86/mm/pat: Use rb_entry()
  x86/mpx: Re-add MPX to selftests Makefile
  x86/mm: Remove CONFIG_DEBUG_NX_TEST
  x86/mm/cpa: Avoid wbinvd() for PREEMPT
  x86/mm: Improve documentation for low-level device I/O functions
2017-02-20 15:57:19 -08:00
Linus Torvalds
4abaa800fd Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 asm update from Ingo Molnar:
 "This adds a new SYSRET testcase"

* 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  selftests/x86: Add a selftest for SYSRET to noncanonical addresses
2017-02-20 14:03:03 -08:00
Linus Torvalds
42e1b14b6e Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
 "The main changes in this cycle were:

   - Implement wraparound-safe refcount_t and kref_t types based on
     generic atomic primitives (Peter Zijlstra)

   - Improve and fix the ww_mutex code (Nicolai Hähnle)

   - Add self-tests to the ww_mutex code (Chris Wilson)

   - Optimize percpu-rwsems with the 'rcuwait' mechanism (Davidlohr
     Bueso)

   - Micro-optimize the current-task logic all around the core kernel
     (Davidlohr Bueso)

   - Tidy up after recent optimizations: remove stale code and APIs,
     clean up the code (Waiman Long)

   - ... plus misc fixes, updates and cleanups"

* 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (50 commits)
  fork: Fix task_struct alignment
  locking/spinlock/debug: Remove spinlock lockup detection code
  lockdep: Fix incorrect condition to print bug msgs for MAX_LOCKDEP_CHAIN_HLOCKS
  lkdtm: Convert to refcount_t testing
  kref: Implement 'struct kref' using refcount_t
  refcount_t: Introduce a special purpose refcount type
  sched/wake_q: Clarify queue reinit comment
  sched/wait, rcuwait: Fix typo in comment
  locking/mutex: Fix lockdep_assert_held() fail
  locking/rtmutex: Flip unlikely() branch to likely() in __rt_mutex_slowlock()
  locking/rwsem: Reinit wake_q after use
  locking/rwsem: Remove unnecessary atomic_long_t casts
  jump_labels: Move header guard #endif down where it belongs
  locking/atomic, kref: Implement kref_put_lock()
  locking/ww_mutex: Turn off __must_check for now
  locking/atomic, kref: Avoid more abuse
  locking/atomic, kref: Use kref_get_unless_zero() more
  locking/atomic, kref: Kill kref_sub()
  locking/atomic, kref: Add kref_read()
  locking/atomic, kref: Add KREF_INIT()
  ...
2017-02-20 13:23:30 -08:00
Al Viro
b8826e506e selftest for default_file_splice_read() infoleak
bug fixed in commit b9dc6f65bc ("fix a fencepost error in pipe_advance()")

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2017-02-18 22:07:24 -05:00
Mickaël Salaün
d498f8719a bpf: Rebuild bpf.o for any dependency update
This is needed to force a rebuild of bpf.o when one of its dependencies
(e.g. uapi/linux/bpf.h) is updated.

Add a phony target.

Signed-off-by: Mickaël Salaün <mic@digikod.net>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: David S. Miller <davem@davemloft.net>
Cc: Wang Nan <wangnan0@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-15 12:16:17 -05:00
Michael Ellerman
68bd42d97c selftests/powerpc: Fix remaining fallout from recent changes
In benchmarks we need to use $(TEST_GEN_PROGS) after we include lib.mk,
because lib.mk does the substitution to add $(OUTPUT).

In math the vmx and fpu names were typoed so they no longer matched
correctly, put back the 'v' and 'f'.

In tm we need to substitute $(OUTPUT) into SIGNAL_CONTEXT_CHK_TESTS so
that the rule matches.

In pmu there is an extraneous ':' on the end of $$BUILD_TARGET for the
clean and install rules, which breaks the logic in the child Makefiles.

Fixes: a8ba798bc8 ("selftests: enable O and KBUILD_OUTPUT")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2017-02-14 08:02:27 -07:00
Michael Ellerman
2e8ec87dad selftests/powerpc: Fix the clean rule since recent changes
The clean rule is broken for the powerpc tests:

  make[1]: Entering directory 'tools/testing/selftests/powerpc'
  Makefile:63: warning: overriding recipe for target 'clean'
  ../lib.mk:51: warning: ignoring old recipe for target 'clean'
  /bin/sh: 3: Syntax error: end of file unexpected (expecting "done")
  Makefile:63: recipe for target 'clean' failed

Fixes: a8ba798bc8 ("selftests: enable O and KBUILD_OUTPUT")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2017-02-14 08:02:20 -07:00
Michael Ellerman
634ce97cdf selftests: Fix the .S and .S -> .o rules
Both these rules incorrectly use $< (first prerequisite) rather than
$^ (all prerequisites), meaning they don't work if we're using more than
one .S file as input. Switch them to using $^.

They also don't include $(CPPFLAGS) and other variables used in the
default rules, which breaks targets that require those. Fix that by
using the builtin $(COMPILE.S) and $(LINK.S) rules.

Fixes: a8ba798bc8 ("selftests: enable O and KBUILD_OUTPUT")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Tested by: Bamvor Jian Zhang <bamvor.zhangjian@linaro.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2017-02-14 08:02:01 -07:00
Michael Ellerman
2047f1d8ba selftests: Fix the .c linking rule
Currently we can't build some tests, for example:

  $ make -C tools/testing/selftests/ TARGETS=vm
  ...
  gcc -Wall -I ../../../../usr/include   -lrt -lpthread ../../../../usr/include/linux/kernel.h userfaultfd.c -o tools/testing/selftests/vm/userfaultfd
  /tmp/ccmOkQSM.o: In function `stress':
  userfaultfd.c:(.text+0xc60): undefined reference to `pthread_create'
  userfaultfd.c:(.text+0xca5): undefined reference to `pthread_create'
  userfaultfd.c:(.text+0xcee): undefined reference to `pthread_create'
  userfaultfd.c:(.text+0xd30): undefined reference to `pthread_create'
  userfaultfd.c:(.text+0xd77): undefined reference to `pthread_join'
  userfaultfd.c:(.text+0xe7d): undefined reference to `pthread_join'
  userfaultfd.c:(.text+0xe9f): undefined reference to `pthread_cancel'
  userfaultfd.c:(.text+0xec6): undefined reference to `pthread_join'
  userfaultfd.c:(.text+0xf14): undefined reference to `pthread_join'
  /tmp/ccmOkQSM.o: In function `userfaultfd_stress':
  userfaultfd.c:(.text+0x13e2): undefined reference to `pthread_attr_setstacksize'
  collect2: error: ld returned 1 exit status

This is because the rule for linking .c files to binaries is incorrect.

The first bug is that it uses $< (first prerequisite) instead of $^ (all
preqrequisites), fix it by using ^$.

Secondly the ordering of the prerequisites vs $(LDLIBS) is wrong,
meaning on toolchains that use --as-needed we fail to link (as above).
Fix that by placing $(LDLIBS) *after* ^$.

Finally switch to using the default rule $(LINK.c), so that we get
$(CPPFLAGS) etc. included.

Fixes: a8ba798bc8 ("selftests: enable O and KBUILD_OUTPUT")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Tested by: Bamvor Jian Zhang <bamvor.zhangjian@linaro.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2017-02-14 08:01:55 -07:00
Michael Ellerman
d83c3ba0b9 selftests: Fix selftests build to just build, not run tests
In commit 88baa78d1f ("selftests: remove duplicated all and clean
target"), the "all" target was removed from individual Makefiles and
added to lib.mk.

However the "all" target was added to lib.mk *after* the existing
"runtests" target. This means "runtests" becomes the first (default)
target for most of our Makefiles.

This has the effect of causing a plain "make" to build *and run* the
tests. Which is at best rude, but depending on which tests are run could
oops someone's build machine.

  $ make -C tools/testing/selftests/
  ...
  make[1]: Entering directory 'tools/testing/selftests/bpf'
  gcc -Wall -O2 -I../../../../usr/include   test_verifier.c -o tools/testing/selftests/bpf/test_verifier
  gcc -Wall -O2 -I../../../../usr/include   test_maps.c -o tools/testing/selftests/bpf/test_maps
  gcc -Wall -O2 -I../../../../usr/include   test_lru_map.c -o tools/testing/selftests/bpf/test_lru_map
  #0 add+sub+mul FAIL
  Failed to load prog 'Function not implemented'!
  #1 unreachable FAIL
  Unexpected error message!
  #2 unreachable2 FAIL
  ...

Fix it by moving the "all" target to the start of lib.mk, making it the
default target.

Fixes: 88baa78d1f ("selftests: remove duplicated all and clean target")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Tested by: Bamvor Jian Zhang <bamvor.zhangjian@linaro.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2017-02-14 08:01:44 -07:00
Rehas Sachdeva
c6ce3e2fe3 radix tree test suite: Add config option for map shift
Add config option "SHIFT=<value>" to Makefile for building test suite
with any value of RADIX_TREE_MAP_SHIFT between 3 and 7 inclusive.

Signed-off-by: Rehas Sachdeva <aquannie@gmail.com>
[mawilcox@microsoft.com: .gitignore, quieten grep, remove on clean]
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
2017-02-13 21:44:10 -05:00
Matthew Wilcox
c0cdbf819c radix tree test suite: Run iteration tests for longer
If the -l flag is set, run the tests for 100 seconds each instead of
the normal 10 seconds.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Reviewed-by: Rehas Sachdeva <aquannie@gmail.com>
2017-02-13 21:44:08 -05:00
Matthew Wilcox
3b7869c31f radix tree test suite: Fix split/join memory leaks
The last of the memory leaks in the test suite was a couple of places in
the split/join testing where I forgot to free the element being removed
from the tree.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Reviewed-by: Rehas Sachdeva <aquannie@gmail.com>
2017-02-13 21:44:08 -05:00
Matthew Wilcox
6da0396cac radix tree test suite: Fix leaks in regression2.c
None of the malloc'ed data structures were ever being freed.  Found with
-fsanitize=address.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Reviewed-by: Rehas Sachdeva <aquannie@gmail.com>
2017-02-13 21:44:07 -05:00
Matthew Wilcox
18d0c57394 radix tree test suite: Fix leaky tests
If item_insert() or item_insert_order() failed to insert an item, they
would leak the item they had just created.  This was causing runaway
memory consumption while running the iteration_check testcase, which
proves that Ross has too much memory in his workstation ;-)

Make sure to free the item on error.  Found with -fsanitize=address.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Reviewed-by: Rehas Sachdeva <aquannie@gmail.com>
2017-02-13 21:44:06 -05:00
Matthew Wilcox
829f83d365 radix tree test suite: Enable address sanitizer
I was looking for a memory scribble and instead found a pile of memory
leaks.  Ensure no more occur in future.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Reviewed-by: Rehas Sachdeva <aquannie@gmail.com>
2017-02-13 21:44:06 -05:00
Matthew Wilcox
1293d5c5f5 radix-tree: Chain preallocated nodes through ->parent
Chaining through the ->private_data member means we have to zero
->private_data after removing preallocated nodes from the list.
We're about to initialise ->parent anyway, so we can avoid zeroing it.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
2017-02-13 21:44:04 -05:00
Rehas Sachdeva
73bc029b76 radix tree test suite: Dial down verbosity with -v
Make the output of radix tree test suite less verbose by default and add
-v and -vv command line options for increasing level of verbosity.

Signed-off-by: Rehas Sachdeva <aquannie@gmail.com>
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
2017-02-13 21:44:04 -05:00
Matthew Wilcox
5eeb2d23df radix tree test suite: Introduce kmalloc_verbose
To help track down where memory leaks may be, add the ability to turn
on/off printing allocations, frees and delayed frees.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
2017-02-13 21:44:03 -05:00
Matthew Wilcox
8ac0486831 radix tree test suite: Build separate binaries for some tests
To allow developers to run a subset of tests, build separate multiorder
and idr-test binaries which will run just the tests in those files.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Reviewed-by: Rehas Sachdeva <aquannie@gmail.com>
2017-02-13 21:44:02 -05:00
Matthew Wilcox
d37cacc5ad ida: Use exceptional entries for small IDAs
We can use the root entry as a bitmap and save allocating a 128 byte
bitmap for an IDA that contains only a few entries (30 on a 32-bit
machine, 62 on a 64-bit machine).  This costs about 300 bytes of kernel
text on x86-64, so as long as 3 IDAs fall into this category, this
is a net win for memory consumption.

Thanks to Rasmus Villemoes for his work documenting the problem and
collecting statistics on IDAs.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
2017-02-13 21:44:02 -05:00
Matthew Wilcox
7ad3d4d85c ida: Move ida_bitmap to a percpu variable
When we preload the IDA, we allocate an IDA bitmap.  Instead of storing
that preallocated bitmap in the IDA, we store it in a percpu variable.
Generally there are more IDAs in the system than CPUs, so this cuts down
on the number of preallocated bitmaps that are unused, and about half
of the IDA users did not call ida_destroy() so they were leaking IDA
bitmaps.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
2017-02-13 21:44:01 -05:00
Matthew Wilcox
0a835c4f09 Reimplement IDR and IDA using the radix tree
The IDR is very similar to the radix tree.  It has some functionality that
the radix tree did not have (alloc next free, cyclic allocation, a
callback-based for_each, destroy tree), which is readily implementable on
top of the radix tree.  A few small changes were needed in order to use a
tag to represent nodes with free space below them.  More extensive
changes were needed to support storing NULL as a valid entry in an IDR.
Plain radix trees still interpret NULL as a not-present entry.

The IDA is reimplemented as a client of the newly enhanced radix tree.  As
in the current implementation, it uses a bitmap at the last level of the
tree.

Signed-off-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Tested-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2017-02-13 21:44:01 -05:00
Matthew Wilcox
bfa11193c4 radix tree test suite: Remove obsolete CONFIG
radix-tree.c doesn't use these CONFIG options any more.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Reviewed-by: Rehas Sachdeva <aquannie@gmail.com>
2017-02-13 16:09:43 -05:00
Matthew Wilcox
991af734c4 radix tree test suite: Use vpath to find lib files
Instead of specifying how to build find_bit.o from lib/find_bit.o,
use vpath to tell make where to find find_bit.c.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Reviewed-by: Rehas Sachdeva <aquannie@gmail.com>
2017-02-13 16:09:42 -05:00
Matthew Wilcox
ab3a1ffd11 radix tree test suite: Reduce kernel.h
Many of the definitions in the radix-tree kernel.h are redundant with
others in tools/include, or are no longer used, such as panic().
Move the definition of __init to init.h and in_interrupt() to preempt.h

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
2017-02-13 16:09:42 -05:00
Matthew Wilcox
7a4f11b889 radix tree test suite: Remove export.h
The tools/include export.h contains everything we need.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
2017-02-13 16:09:41 -05:00
Matthew Wilcox
12ea65390b radix tree test suite: Remove types.h
Move the pieces we still need to tools/include and update a few implicit
includes.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
2017-02-13 16:09:41 -05:00
Matthew Wilcox
a3c7890790 radix tree test suite: Remove mempool
The radix tree hasn't used a mempool since the beginning of git history.
Remove the userspace mempool implementation.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Reviewed-by: Rehas Sachdeva <aquannie@gmail.com>
2017-02-13 16:09:36 -05:00
Matthew Wilcox
43a30c2a31 radix tree test suite: Depend on tools/include/asm files
Changing tools/include/asm/bug.h showed a missing dependency in the
Makefile.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Reviewed-by: Rehas Sachdeva <aquannie@gmail.com>
2017-02-13 16:08:47 -05:00
Mickaël Salaün
bc6a3d9977 bpf: Add test_tag to .gitignore
Signed-off-by: Mickaël Salaün <mic@digikod.net>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-10 15:56:08 -05:00
Mickaël Salaün
702498a142 bpf: Remove bpf_sys.h from selftests
Add require dependency headers.

Signed-off-by: Mickaël Salaün <mic@digikod.net>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-10 15:56:08 -05:00
Mickaël Salaün
f4874d01be bpf: Use bpf_create_map() from the library
Replace bpf_map_create() with bpf_create_map() calls.

Signed-off-by: Mickaël Salaün <mic@digikod.net>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-10 15:56:07 -05:00
Mickaël Salaün
5f155c2563 bpf: Use bpf_map_get_next_key() from the library
Replace bpf_map_next_key() with bpf_map_get_next_key() calls.

Signed-off-by: Mickaël Salaün <mic@digikod.net>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-10 15:56:07 -05:00
Mickaël Salaün
e58383b803 bpf: Use bpf_map_delete_elem() from the library
Replace bpf_map_delete() with bpf_map_delete_elem() calls.

Signed-off-by: Mickaël Salaün <mic@digikod.net>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-10 15:56:07 -05:00
Mickaël Salaün
e5ff7c4019 bpf: Use bpf_map_lookup_elem() from the library
Replace bpf_map_lookup() with bpf_map_lookup_elem() calls.

Signed-off-by: Mickaël Salaün <mic@digikod.net>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-10 15:56:07 -05:00
Mickaël Salaün
10ecc728fe bpf: Use bpf_map_update_elem() from the library
Replace bpf_map_update() with bpf_map_update_elem() calls.

Signed-off-by: Mickaël Salaün <mic@digikod.net>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-10 15:56:07 -05:00
Mickaël Salaün
2ee89fb9a9 bpf: Use bpf_load_program() from the library
Replace bpf_prog_load() with bpf_load_program() calls.

Signed-off-by: Mickaël Salaün <mic@digikod.net>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-10 15:56:06 -05:00
Mickaël Salaün
d02d8986a7 bpf: Always test unprivileged programs
If selftests are run as root, then execute the unprivileged checks as
well. This switch from 243 to 368 tests.

The test numbers are suffixed with "/u" when executed as unprivileged or
with "/p" when executed as privileged.

The geteuid() check is replaced with a capability check.

Handling capabilities requires the libcap dependency.

Signed-off-by: Mickaël Salaün <mic@digikod.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-10 15:56:06 -05:00
Mickaël Salaün
7f73f39a89 bpf: Change the include directory for selftest
Use the tools include directory instead of the installed one to allow
builds from other kernels.

Signed-off-by: Mickaël Salaün <mic@digikod.net>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-10 15:56:06 -05:00
Dave Hansen
2195bff041 selftests, x86, protection_keys: fix wrong offset in siginfo
The siginfo contains a bunch of information about the fault.
For protection keys, it tells us which protection key's
permissions were violated.

The wrong offset in here leads to reading garbage and thus
failures in the tests.

We should probably eventually move this over to using the
kernel's headers defining the siginfo instead of a hard-coded
offset.  But, for now, just do the simplest fix.

Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2017-02-08 11:15:43 -07:00
Dave Hansen
16846c2d96 selftests, x86, protection_keys: fix uninitialized variable warning
'orig_pkru' might have been uninitialized here.  Fix it.

Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2017-02-08 11:15:35 -07:00
Steven Rostedt (VMware)
5739438b72 ktest: Add variable run_command_status to save status of commands executed
Create a variable called run_command_status that saves the status of the
executed commands and can be used by other functions later to test for
status.

Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2017-02-07 14:50:03 -05:00
Steven Rostedt (VMware)
6474ace999 ktest.pl: Powercycle the box on reboot if no connection can be made
When performing a reboot of the test box, try to ssh to it. If it can't
connect for 5 seconds, then powercycle the box. This is useful because the
reboot is done via ssh, and if you can't ssh to the box because it is hung,
the reboot fails to reboot.

Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2017-02-07 12:23:38 -05:00
Steven Rostedt (VMware)
6e98d1b441 ktest: Add timeout to ssh command
Add a timeout to performing an ssh command. This will let testing if a
machine is alive or not, or if something else may be amiss. A timeout can be
passed to ssh, where ssh will fail if it does not complete within the given
timeout.

Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2017-02-07 12:23:38 -05:00
Steven Rostedt (VMware)
32677207dc ktest: Fix child exit code processing
The child_exit errno needs to be shifted by 8 bits to compare against the
return values for the bisect variables.

Fixes: c5dacb88f0 ("ktest: Allow overriding bisect test results")
Cc: stable@vger.kernel.org
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2017-02-07 12:05:25 -05:00
Steven Rostedt (VMware)
2e07c9f55e ktest: Have POST_TEST run after the test has totally completed
The POST_TEST config is to be executed after a test has fully compeleted,
whether the test passed or failed. It currently is executed at the moment
that the test has been decided if it failed or not. As the test does other
clean ups, it isn't truly finished. Move the POST_TEST execution to after
all the test cleanups have been done.

Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2017-02-07 11:49:21 -05:00
William Tu
63dfef75ed bpf: enable verifier to add 0 to packet ptr
The patch fixes the case when adding a zero value to the packet
pointer.  The zero value could come from src_reg equals type
BPF_K or CONST_IMM.  The patch fixes both, otherwise the verifer
reports the following error:
  [...]
    R0=imm0,min_value=0,max_value=0
    R1=pkt(id=0,off=0,r=4)
    R2=pkt_end R3=fp-12
    R4=imm4,min_value=4,max_value=4
    R5=pkt(id=0,off=4,r=4)
  269: (bf) r2 = r0     // r2 becomes imm0
  270: (77) r2 >>= 3
  271: (bf) r4 = r1     // r4 becomes pkt ptr
  272: (0f) r4 += r2    // r4 += 0
  addition of negative constant to packet pointer is not allowed

Signed-off-by: William Tu <u9012063@gmail.com>
Signed-off-by: Mihai Budiu <mbudiu@vmware.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-06 22:50:04 -05:00
Josef Bacik
29200c199c bpf: test for AND edge cases
These two tests are based on the work done for f23cc643f9.  The first test is
just a basic one to make sure we don't allow AND'ing negative values, even if it
would result in a valid index for the array.  The second is a cleaned up version
of the original testcase provided by Jann Horn that resulted in the commit.

Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-06 22:35:58 -05:00
Greg Kroah-Hartman
17fa87fe5a Merge 4.10-rc7 into char-misc-next
We want the hv and other fixes in here as well to handle merge and
testing issues.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-02-06 09:39:13 +01:00
Dave Hansen
e64d5fbe56 x86/mpx: Re-add MPX to selftests Makefile
Ingo pointed out that the MPX tests were no longer in the selftests
Makefile.  It appears that I shot myself in the foot on this one
and accidentally removed them when I added the pkeys tests, probably
from bungling a merge conflict.

Reported-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: 5f23f6d082 ("x86/pkeys: Add self-tests")
Link: http://lkml.kernel.org/r/20170201225629.C3070852@viggo.jf.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-02-02 08:09:18 +01:00
Ingo Molnar
a8709fa4a0 Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull RCU changes from Paul E. McKenney:

 - Dynticks updates, consolidating open-coded counter accesses into a well-defined API

 - SRCU updates: Simplify algorithm, add formal verification

 - Documentation updates

 - Miscellaneous fixes

 - Torture-test updates

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-01-31 07:45:42 +01:00
David S. Miller
4e8f2fc1a5 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Two trivial overlapping changes conflicts in MPLS and mlx5.

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-28 10:33:06 -05:00
Matthew Wilcox
b246a9d267 tools: Provide a definition of WARN_ON
The definition of WARN_ON being used by the radix tree test suite was
deficient in two ways: it did not provide a return value, and it stopped
execution instead of continuing.  This version of WARN_ON tells you
which file & line the assertion was triggered in.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
2017-01-27 21:29:39 -05:00
Matthew Wilcox
c68a2aab33 radix tree test suite: Remove duplicate bitops code
By adding __set_bit and __clear_bit to the tools include directory, we
can share the bitops code.  This reveals an include loop between kernel.h,
log2.h, bitmap.h and bitops.h.  Break it the same way as the kernel does;
by moving the kernel.h include from bitops.h to bitmap.h.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
2017-01-27 21:29:39 -05:00
Linus Torvalds
1b1bc42c16 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) GTP fixes from Andreas Schultz (missing genl module alias, clear IP
    DF on transmit).

 2) Netfilter needs to reflect the fwmark when sending resets, from Pau
    Espin Pedrol.

 3) nftable dump OOPS fix from Liping Zhang.

 4) Fix erroneous setting of VIRTIO_NET_HDR_F_DATA_VALID on transmit,
    from Rolf Neugebauer.

 5) Fix build error of ipt_CLUSTERIP when procfs is disabled, from Arnd
    Bergmann.

 6) Fix regression in handling of NETIF_F_SG in harmonize_features(),
    from Eric Dumazet.

 7) Fix RTNL deadlock wrt. lwtunnel module loading, from David Ahern.

 8) tcp_fastopen_create_child() needs to setup tp->max_window, from
    Alexey Kodanev.

 9) Missing kmemdup() failure check in ipv6 segment routing code, from
    Eric Dumazet.

10) Don't execute unix_bind() under the bindlock, otherwise we deadlock
    with splice. From WANG Cong.

11) ip6_tnl_parse_tlv_enc_lim() potentially reallocates the skb buffer,
    therefore callers must reload cached header pointers into that skb.
    Fix from Eric Dumazet.

12) Fix various bugs in legacy IRQ fallback handling in alx driver, from
    Tobias Regnery.

13) Do not allow lwtunnel drivers to be unloaded while they are
    referenced by active instances, from Robert Shearman.

14) Fix truncated PHY LED trigger names, from Geert Uytterhoeven.

15) Fix a few regressions from virtio_net XDP support, from John
    Fastabend and Jakub Kicinski.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (102 commits)
  ISDN: eicon: silence misleading array-bounds warning
  net: phy: micrel: add support for KSZ8795
  gtp: fix cross netns recv on gtp socket
  gtp: clear DF bit on GTP packet tx
  gtp: add genl family modules alias
  tcp: don't annotate mark on control socket from tcp_v6_send_response()
  ravb: unmap descriptors when freeing rings
  virtio_net: reject XDP programs using header adjustment
  virtio_net: use dev_kfree_skb for small buffer XDP receive
  r8152: check rx after napi is enabled
  r8152: re-schedule napi for tx
  r8152: avoid start_xmit to schedule napi when napi is disabled
  r8152: avoid start_xmit to call napi_schedule during autosuspend
  net: dsa: Bring back device detaching in dsa_slave_suspend()
  net: phy: leds: Fix truncated LED trigger names
  net: phy: leds: Break dependency of phy.h on phy_led_triggers.h
  net: phy: leds: Clear phy_num_led_triggers on failure to avoid crash
  net-next: ethernet: mediatek: change the compatible string
  Documentation: devicetree: change the mediatek ethernet compatible string
  bnxt_en: Fix RTNL lock usage on bnxt_get_port_module_status().
  ...
2017-01-27 12:54:16 -08:00
Dave Airlie
b0df0b251b Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into drm-next
Backmerge Linus master to get the connector locking revert.

* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux: (645 commits)
  sysctl: fix proc_doulongvec_ms_jiffies_minmax()
  Revert "drm/probe-helpers: Drop locking from poll_enable"
  MAINTAINERS: add Dan Streetman to zbud maintainers
  MAINTAINERS: add Dan Streetman to zswap maintainers
  mm: do not export ioremap_page_range symbol for external module
  mn10300: fix build error of missing fpu_save()
  romfs: use different way to generate fsid for BLOCK or MTD
  frv: add missing atomic64 operations
  mm, page_alloc: fix premature OOM when racing with cpuset mems update
  mm, page_alloc: move cpuset seqcount checking to slowpath
  mm, page_alloc: fix fast-path race with cpuset update or removal
  mm, page_alloc: fix check for NULL preferred_zone
  kernel/panic.c: add missing \n
  fbdev: color map copying bounds checking
  frv: add atomic64_add_unless()
  mm/mempolicy.c: do not put mempolicy before using its nodemask
  radix-tree: fix private list warnings
  Documentation/filesystems/proc.txt: add VmPin
  mm, memcg: do not retry precharge charges
  proc: add a schedule point in proc_pid_readdir()
  ...
2017-01-27 11:00:42 +10:00
Daniel Borkmann
0901df3aea bpf: use prefix_len in test_tag when reading fdinfo
We currently used len instead of prefix_len for the strncmp() in
fdinfo on the prog_tag. It still worked as we matched on the correct
output line also with first 8 instead of 10 chars, but lets fix it
properly to use the intended length.

Fixes: 62b6466026 ("bpf: add prog tag test case to bpf selftests")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-25 23:15:28 -05:00
Paul E. McKenney
31945aa9f1 Merge branches 'doc.2017.01.15b', 'dyntick.2017.01.23a', 'fixes.2017.01.23a', 'srcu.2017.01.25a' and 'torture.2017.01.15b' into HEAD
doc.2017.01.15b: Documentation updates
dyntick.2017.01.23a: Dyntick tracking consolidation
fixes.2017.01.23a: Miscellaneous fixes
srcu.2017.01.25a: SRCU rewrite, fixes, and verification
torture.2017.01.15b: Torture-test updates
2017-01-25 12:56:05 -08:00
Lance Roy
418b2977b3 rcutorture: Add CBMC-based formal verification for SRCU
This commit creates a formal/srcu-cbmc directory containing scripts that
pull SRCU in from the source code, filter it to remove things that CBMC
cannot handle, and run a series of verifications on it.  This has a number
of shortcomings:

1.	It does not yet hook into the upper-level self-test Makefiles.
2.	It tests only a single scenario, store buffering.
3.	There is no gcc-based syntax-error prefiltering.

Nevertheless, it does fully verify a piece of SRCU under a moderately
weak memory model (PSO).

Signed-off-by: Lance Roy <ldr709@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2017-01-25 12:54:22 -08:00
Luis R. Rodriguez
061132d2b9 test_firmware: add test custom fallback trigger
We have no custom fallback mechanism test interface. Provide one.
This tests both the custom fallback mechanism and cancelling the
it.

Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-01-25 11:52:34 +01:00
Luis R. Rodriguez
eb67bc3ffd tools: firmware: add fallback cancelation testing
Add a test case for cancelling the sync fallback mechanism.

Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-01-25 11:52:34 +01:00
Luis R. Rodriguez
823b0221a5 tools: firmware: rename fallback mechanism script
Calling it user mode helper only creates confusion.

Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-01-25 11:52:34 +01:00
Luis R. Rodriguez
afb999cdef tools: firmware: check for distro fallback udev cancel rule
Some distributions (Debian, OpenSUSE) have a udev rule in place to cancel
all fallback mechanism uevents immediately. This would obviously
make it hard to test against the fallback mechanism test interface,
so we need to check for this.

Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-01-25 11:52:34 +01:00
Daniel Borkmann
3fadc80115 bpf: enable verifier to better track const alu ops
William reported couple of issues in relation to direct packet
access. Typical scheme is to check for data + [off] <= data_end,
where [off] can be either immediate or coming from a tracked
register that contains an immediate, depending on the branch, we
can then access the data. However, in case of calculating [off]
for either the mentioned test itself or for access after the test
in a more "complex" way, then the verifier will stop tracking the
CONST_IMM marked register and will mark it as UNKNOWN_VALUE one.

Adding that UNKNOWN_VALUE typed register to a pkt() marked
register, the verifier then bails out in check_packet_ptr_add()
as it finds the registers imm value below 48. In the first below
example, that is due to evaluate_reg_imm_alu() not handling right
shifts and thus marking the register as UNKNOWN_VALUE via helper
__mark_reg_unknown_value() that resets imm to 0.

In the second case the same happens at the time when r4 is set
to r4 &= r5, where it transitions to UNKNOWN_VALUE from
evaluate_reg_imm_alu(). Later on r4 we shift right by 3 inside
evaluate_reg_alu(), where the register's imm turns into 3. That
is, for registers with type UNKNOWN_VALUE, imm of 0 means that
we don't know what value the register has, and for imm > 0 it
means that the value has [imm] upper zero bits. F.e. when shifting
an UNKNOWN_VALUE register by 3 to the right, no matter what value
it had, we know that the 3 upper most bits must be zero now.
This is to make sure that ALU operations with unknown registers
don't overflow. Meaning, once we know that we have more than 48
upper zero bits, or, in other words cannot go beyond 0xffff offset
with ALU ops, such an addition will track the target register
as a new pkt() register with a new id, but 0 offset and 0 range,
so for that a new data/data_end test will be required. Is the source
register a CONST_IMM one that is to be added to the pkt() register,
or the source instruction is an add instruction with immediate
value, then it will get added if it stays within max 0xffff bounds.
>From there, pkt() type, can be accessed should reg->off + imm be
within the access range of pkt().

  [...]
  from 28 to 30: R0=imm1,min_value=1,max_value=1
    R1=pkt(id=0,off=0,r=22) R2=pkt_end
    R3=imm144,min_value=144,max_value=144
    R4=imm0,min_value=0,max_value=0
    R5=inv48,min_value=2054,max_value=2054 R10=fp
  30: (bf) r5 = r3
  31: (07) r5 += 23
  32: (77) r5 >>= 3
  33: (bf) r6 = r1
  34: (0f) r6 += r5
  cannot add integer value with 0 upper zero bits to ptr_to_packet

  [...]
  from 52 to 80: R0=imm1,min_value=1,max_value=1
    R1=pkt(id=0,off=0,r=34) R2=pkt_end R3=inv
    R4=imm272 R5=inv56,min_value=17,max_value=17
    R6=pkt(id=0,off=26,r=34) R10=fp
  80: (07) r4 += 71
  81: (18) r5 = 0xfffffff8
  83: (5f) r4 &= r5
  84: (77) r4 >>= 3
  85: (0f) r1 += r4
  cannot add integer value with 3 upper zero bits to ptr_to_packet

Thus to get above use-cases working, evaluate_reg_imm_alu() has
been extended for further ALU ops. This is fine, because we only
operate strictly within realm of CONST_IMM types, so here we don't
care about overflows as they will happen in the simulated but also
real execution and interaction with pkt() in check_packet_ptr_add()
will check actual imm value once added to pkt(), but it's irrelevant
before.

With regards to 06c1c04972 ("bpf: allow helpers access to variable
memory") that works on UNKNOWN_VALUE registers, the verifier becomes
now a bit smarter as it can better resolve ALU ops, so we need to
adapt two test cases there, as min/max bound tracking only becomes
necessary when registers were spilled to stack. So while mask was
set before to track upper bound for UNKNOWN_VALUE case, it's now
resolved directly as CONST_IMM, and such contructs are only necessary
when f.e. registers are spilled.

For commit 6b17387307 ("bpf: recognize 64bit immediate loads as
consts") that initially enabled dw load tracking only for nfp jit/
analyzer, I did couple of tests on large, complex programs and we
don't increase complexity badly (my tests were in ~3% range on avg).
I've added a couple of tests similar to affected code above, and
it works fine with verifier now.

Reported-by: William Tu <u9012063@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: Gianluca Borello <g.borello@gmail.com>
Cc: William Tu <u9012063@gmail.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-24 14:46:06 -05:00
Daniel Borkmann
62b6466026 bpf: add prog tag test case to bpf selftests
Add the test case used to compare the results from fdinfo with
af_alg's output on the tag. Tests are from min to max sized
programs, with and without maps included.

  # ./test_tag
  test_tag: OK (40945 tests)

Tested on x86_64 and s390x.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-24 14:46:06 -05:00
David Herrmann
4d3381f5a3 bpf: Add tests for the lpm trie map
The first part of this program runs randomized tests against the
lpm-bpf-map. It implements a "Trivial Longest Prefix Match" (tlpm)
based on simple, linear, single linked lists. The implementation
should be pretty straightforward.

Based on tlpm, this inserts randomized data into bpf-lpm-maps and
verifies the trie-based bpf-map implementation behaves the same way
as tlpm.

The second part uses 'real world' IPv4 and IPv6 addresses and tests
the trie with those.

Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Daniel Mack <daniel@zonque.org>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-23 16:10:38 -05:00
Viresh Kumar
1e4c2830c3 selftest: cpufreq: Add special tests
This patch adds support for special tests which were reported on the PM
list over the years, which helped catching core bugs by several
developers.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2017-01-19 10:32:27 -07:00
Viresh Kumar
6751faf3d8 selftest: cpufreq: Add support to test cpufreq modules
This patch adds support for cpufreq modules like cpufreq drivers and
cpufreq governors. The tests will insert the modules in different orders
and them perform basic cpufreq tests. The modules are then removed from
the kernel.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2017-01-19 10:32:21 -07:00
Viresh Kumar
b03eaf8dba selftest: cpufreq: Add suspend/resume/hibernate support
This patch adds support to test basic suspend/resume and hibernation to
the cpufreq selftests.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2017-01-19 10:32:15 -07:00
Viresh Kumar
e66d5b6737 selftest: cpufreq: Add support for cpufreq tests
This patch adds supports for basic cpufreq tests, which can be performed
independent of any platform.

It does basic tests for now, like
- reading all cpufreq files
- trying to update them
- switching frequencies
- switching governors

This can be extended to have more specific tests later on.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2017-01-19 10:32:05 -07:00
Stafford Horne
6320303fb2 selftests: Add intel_pstate to TARGETS
This test was missing from the TARGETS list.  The test requires patches
to cpupower to pass correctly.

Cc: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Stafford Horne <shorne@gmail.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2017-01-19 10:30:46 -07:00
Stafford Horne
29fa1d436e selftests/intel_pstate: Update makefile to match new style
Recent changes from Bamvor (88baa78d1f) have standardized the
variable names like TEST_GEN_FILES and removed the need for make targets
all and clean.

These changes bring the intel_pstate test inline with those changes.

Cc: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Stafford Horne <shorne@gmail.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2017-01-19 10:30:40 -07:00
Stafford Horne
aff985fd07 selftests/intel_pstate: Fix warning on loop index overflow
The build was showing the warning:
 aperf.c:60:27: warning: iteration 2147483647 invokes undefined behavior
 [-Waggressive-loop-optimizations]
  for (i=0; i<0x8fffffff; i++) {

This change sets i, cpu and fd to unsigned int as they should not need
to be signed.

Cc: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Stafford Horne <shorne@gmail.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2017-01-19 10:30:34 -07:00
Stafford Horne
99c21f6d00 selftests/futex: Add headers to makefile dependencies
The futex makefile did not contain dependencies for all headers, so if
we make changes to logging.h rebuild will not happen. Add headers to
fix it up.

Signed-off-by: Stafford Horne <shorne@gmail.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2017-01-19 10:30:21 -07:00
Stafford Horne
083f345151 selftests/futex: Add stdio used for logging
Fix missing printf compile warnings.

Signed-off-by: Stafford Horne <shorne@gmail.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2017-01-19 10:30:15 -07:00
Madhavan Srinivasan
df21d2fa73 selftest/powerpc: Wrong PMC initialized in pmc56_overflow test
Test uses PMC2 to count the event. But PMC1 is being initialized.
Patch to fix it.

Fixes: 3752e453f6 ('selftests/powerpc: Add tests of PMU EBBs')
Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-01-18 16:03:34 +11:00
Martin KaFai Lau
3fbfadce60 bpf: Fix test_lru_sanity5() in test_lru_map.c
test_lru_sanity5() fails when the number of online cpus
is fewer than the number of possible cpus.  It can be
reproduced with qemu by using cmd args "--smp cpus=2,maxcpus=8".

The problem is the loop in test_lru_sanity5() is testing
'i' which is incorrect.

This patch:
1. Make sched_next_online() always return -1 if it cannot
   find a next cpu to schedule the process.
2. In test_lru_sanity5(), the parent process does
   sched_setaffinity() first (through sched_next_online())
   and the forked process will inherit it according to
   the 'man sched_setaffinity'.

Fixes: 5db58faf98 ("bpf: Add tests for the LRU bpf_htab")
Reported-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-17 15:39:39 -05:00
Greg Kroah-Hartman
5593edfbfa Merge 4.10-rc4 into driver-core-next
We want the sysfs file revert and other fixes in here as well for
testing.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-01-16 15:05:45 +01:00
Paul E. McKenney
7d025948e4 torture: Enable DEBUG_OBJECTS_RCU_HEAD for Tiny RCU
The RCU torture tests currently do not run any Tiny RCU scenarios for
CONFIG_DEBUG_OBJECTS_RCU_HEAD=y.  This is a hole in the test, given
that someone might need this in real life and given that Tiny RCU uses
different callback-handling code than does Tree RCU.  This commit
therefore enables this Kconfig option for scenario TINY02.

Reported-by: "Ahmed, Iftekhar" <ahmedi@oregonstate.edu>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2017-01-14 21:36:16 -08:00
Paul E. McKenney
b1c14a39ad torture: Update RCU test scenario documentation
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2017-01-14 21:35:59 -08:00
Paul E. McKenney
c31db96f56 torture: Run a couple scenarios with CONFIG_RCU_EQS_DEBUG
This commit runs TREE04 and TREE08 with CONFIG_RCU_EQS_DEBUG=y,
enabling dyntick-counter checking on those two tests.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2017-01-14 21:35:55 -08:00
Paul E. McKenney
24e2f4de66 torture: Run one test with DEBUG_LOCK_ALLOC but not PROVE_LOCKING
This commit sets CONFIG_DEBUG_LOCK_ALLOC but not CONFIG_PROVE_LOCKING
for TREE08 in order to have at least one test with this configuration.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2017-01-14 21:35:50 -08:00
Paul E. McKenney
ad4b594b5d torture: Run at least one test with CONFIG_DEBUG_OBJECTS_RCU_HEAD
This commit enables the CONFIG_DEBUG_OBJECTS_RCU_HEAD Kconfig option
in TREE02 in order to do at least some testing with this enabled.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2017-01-14 21:35:42 -08:00
Paul E. McKenney
cdfc7f1ab5 torture: Add tests without slow grace period setup/cleanup
This commit moves CONFIG_RCU_TORTURE_TEST_SLOW_CLEANUP,
CONFIG_RCU_TORTURE_TEST_SLOW_INIT, and CONFIG_RCU_TORTURE_TEST_SLOW_PREINIT
from CFcommon to all of the TREE scenarios other than TREE08 and TREE09
in order to do at least some testing without these Kconfig options set.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2017-01-14 21:35:37 -08:00
Paul E. McKenney
4faf185cee torture: Add CONFIG_PROVE_RCU_REPEATEDLY=y for TINY02
This commit adds CONFIG_PROVE_RCU_REPEATEDLY=y, which has been untested
for quite some time.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2017-01-14 21:35:02 -08:00
Paul E. McKenney
963447e6b5 torture: Add a check for CONFIG_RCU_STALL_COMMON for TINY01
This commit verifies coverage of testing with CONFIG_RCU_STALL_COMMON=n.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2017-01-14 21:34:21 -08:00
Chris Wilson
2b0b211134 locking/ww_mutex: Add ww_mutex to tools/testing/selftests
Add the minimal test running (modprobe test-ww_mutex) to the kselftests
CI framework.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20161201114711.28697-9-chris@chris-wilson.co.uk
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-01-14 11:37:17 +01:00
Chris Wilson
0186a6cbdc locking/ww_mutex: Add ww_mutex to locktorture test
Although ww_mutexes degenerate into mutexes, it would be useful to
torture the deadlock handling between multiple ww_mutexes in addition to
torturing the regular mutexes.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Maarten Lankhorst <dev@mblankhorst.nl>
Cc: Nicolai Hähnle <nhaehnle@gmail.com>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20161201114711.28697-3-chris@chris-wilson.co.uk
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-01-14 11:37:14 +01:00