Commit Graph

567 Commits

Author SHA1 Message Date
Linus Torvalds 61de8e5364 kselftest updates for 3.19-rc1
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Merge tag 'linux-kselftest-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kselftest update from Shuah Khan:
 "kselftest updates for 3.19-rc1:

   - kcmp test include file cleanup
   - kcmp change to build on all architectures
   - A light weight kselftest framework that provides a set of
     interfaces for tests to use to report results.  In addition,
     several tests are updated to use the framework.
   - A new runtime system size test that prints the amount of RAM that
     the currently running system is using"

* tag 'linux-kselftest-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftest: size: Add size test for Linux kernel
  selftests/kcmp: Always try to build the test
  selftests/kcmp: Don't include kernel headers
  kcmp: Move kcmp.h into uapi
  selftests/timers: change test to use ksft framework
  selftests/kcmp: change test to use ksft framework
  selftests/ipc: change test to use ksft framework
  selftests/breakpoints: change test to use ksft framework
  selftests: add kselftest framework for uniform test reporting
  selftests/user: move test out of Makefile into a shell script
  selftests/net: move test out of Makefile into a shell script
2014-12-16 13:15:12 -08:00
Linus Torvalds 78a45c6f06 Merge branch 'akpm' (second patch-bomb from Andrew)
Merge second patchbomb from Andrew Morton:
 - the rest of MM
 - misc fs fixes
 - add execveat() syscall
 - new ratelimit feature for fault-injection
 - decompressor updates
 - ipc/ updates
 - fallocate feature creep
 - fsnotify cleanups
 - a few other misc things

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (99 commits)
  cgroups: Documentation: fix trivial typos and wrong paragraph numberings
  parisc: percpu: update comments referring to __get_cpu_var
  percpu: update local_ops.txt to reflect this_cpu operations
  percpu: remove __get_cpu_var and __raw_get_cpu_var macros
  fsnotify: remove destroy_list from fsnotify_mark
  fsnotify: unify inode and mount marks handling
  fallocate: create FAN_MODIFY and IN_MODIFY events
  mm/cma: make kmemleak ignore CMA regions
  slub: fix cpuset check in get_any_partial
  slab: fix cpuset check in fallback_alloc
  shmdt: use i_size_read() instead of ->i_size
  ipc/shm.c: fix overly aggressive shmdt() when calls span multiple segments
  ipc/msg: increase MSGMNI, remove scaling
  ipc/sem.c: increase SEMMSL, SEMMNI, SEMOPM
  ipc/sem.c: change memory barrier in sem_lock() to smp_rmb()
  lib/decompress.c: consistency of compress formats for kernel image
  decompress_bunzip2: off by one in get_next_block()
  usr/Kconfig: make initrd compression algorithm selection not expert
  fault-inject: add ratelimit option
  ratelimit: add initialization macro
  ...
2014-12-13 13:00:36 -08:00
David Drysdale c9b26b81af syscalls: add selftest for execveat(2)
Signed-off-by: David Drysdale <drysdale@google.com>
Cc: Meredydd Luff <meredydd@senatehouse.org>
Cc: Shuah Khan <shuah.kh@samsung.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Rich Felker <dalias@aerifal.cx>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-13 12:42:51 -08:00
Linus Torvalds 823e334ecd Docs changes for the 3.19 merge window
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Merge tag 'docs-for-linus' of git://git.lwn.net/linux-2.6

Pull documentation update from Jonathan Corbet:
 "Here's my set of accumulated documentation changes for 3.19.

  It includes a couple of additions to the coding style document, some
  fixes for minor build problems within the documentation tree, the
  relocation of the kselftest docs, and various tweaks and additions.

  A couple of changes reach outside of Documentation/; they only make
  trivial comment changes and I did my best to get the required acks.

  Complete with a shiny signed tag this time around"

* tag 'docs-for-linus' of git://git.lwn.net/linux-2.6:
  kobject: grammar fix
  Input: xpad - update docs to reflect current state
  Documentation: Build mic/mpssd only for x86_64
  cgroups: Documentation: fix wrong cgroupfs paths
  Documentation/email-clients.txt: add info about Claws Mail
  CodingStyle: add some more error handling guidelines
  kselftest: Move the docs to the Documentation dir
  Documentation: fix formatting to make 's' happy
  Documentation: power: Fix typo in Documentation/power
  Documentation: vm: Add 1GB large page support information
  ipv4: add kernel parameter tcpmhash_entries
  Documentation: Fix a typo in mailbox.txt
  treewide: Fix typo in Documentation/DocBook/device-drivers
  CodingStyle: Add a chapter on conditional compilation
2014-12-12 14:42:48 -08:00
Eric W. Biederman db86da7cb7 userns: Unbreak the unprivileged remount tests
A security fix in caused the way the unprivileged remount tests were
using user namespaces to break.  Tweak the way user namespaces are
being used so the test works again.

Cc: stable@vger.kernel.org
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2014-12-11 18:07:07 -06:00
Linus Torvalds f74ea36848 The following ktest updates were done:
o Fix handling the make kernelrelease change
  o Fix make_min_config that was broken by new bisect_config changes
  o Allow tests to undefine default options (not just being able to override
     them)
  o Print name of test (if defined) to start of test output
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Merge tag 'ktest-v3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest

Pull ktest changes from Steven Rostedt:
 "The following ktest updates were done:

   - Fix handling the make kernelrelease change
   - Fix make_min_config that was broken by new bisect_config changes
   - Allow tests to undefine default options (not just being able to
     override them)
   - Print name of test (if defined) to start of test output"

* tag 'ktest-v3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest:
  ktest: Add back "tail -1" to kernelrelease make
  ktest: Add name to running title
  ktest: Allow tests to undefine default options
  ktest: Fix make_min_config to handle new assign_configs call
  ktest: Use make -s kernelrelease
2014-12-10 20:40:51 -08:00
Linus Torvalds c32809521d Updates for the ftrace self tests:
o Added kprobes on ftrace testcase
  o Sort test cases
  o Add file to hold helper functions
  o Use logfile name supported by busybox's mktemp
  o Clear trace buffer after running kprobe test
  o Fix show descriptions when run on dash shell
  o Add --verbose option for showing echo output
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Merge tag 'ftracetest-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull ftrace self-test updates from Steven Rostedt:
 "Updates for the ftrace self tests:

   - Added kprobes on ftrace testcase
   - Sort test cases
   - Add file to hold helper functions
   - Use logfile name supported by busybox's mktemp
   - Clear trace buffer after running kprobe test
   - Fix show descriptions when run on dash shell
   - Add --verbose option for showing echo output"

* tag 'ftracetest-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  ftracetest: Add --verbose option for showing echo output
  ftracetest: Fix to show descriptions on dash
  ftracetest: Add basic event tracing test cases
  ftracetest: Clear trace buffer after running kprobe testcases
  ftracetest: Use logfile name supported by busybox's mktemp
  ftracetest: Add a couple of ftrace test cases
  ftracetest: Add functions file that holds helper functions
  ftracetest: Sort testcases
  ftracetest: Add kprobes on ftrace testcase
2014-12-10 20:03:45 -08:00
Masami Hiramatsu 57cee23650 ftracetest: Add --verbose option for showing echo output
Add --verbose/-v option for showing echo output in testcases.
This is good for checking the progress of testcases which
take a longer time to run.

To implement this feature, all the testcase failures are
captured in ftracetest and send signal to set SIG_RESULT=FAIL.

Link: http://lkml.kernel.org/r/20141204194123.7376.22964.stgit@localhost.localdomain

Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-12-04 10:40:34 -05:00
Masami Hiramatsu 36922d133c ftracetest: Fix to show descriptions on dash
The ftracetest doesn't show testcase's descriptions when
it is executed on dash. This fixes that to show the
descriptions on dash correctly by passing it via a variable
instead of directly passing the grep command output.

Link: http://lkml.kernel.org/r/20141204194116.7376.78940.stgit@localhost.localdomain

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-12-04 10:38:49 -05:00
Tim Bird 3ce51050fa selftest: size: Add size test for Linux kernel
This test shows the amount of memory used by the system.
Note that this is dependent on the user-space that is loaded
when this program runs.  Optimally, this program would be
run as the init program itself.

The program is optimized for size itself, to avoid conflating
its own execution with that of the system software.
The code is compiled statically, with no stdlibs. On my x86_64 system,
this results in a statically linked binary of less than 5K.

Signed-off-by: Tim Bird <tim.bird@sonymobile.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2014-12-03 19:27:47 -07:00
Michael Ellerman 4c12df63f7 selftests/kcmp: Always try to build the test
Don't prevent the test building on non-x86. Just try and build it and
let the chips fall where they may.

Add support for CROSS_COMPILE while we're at it. Also we don't need a
custom rule for building kcmp_test.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Reviewed-by: Christopher Covington <cov@codeaurora.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2014-12-02 13:53:24 -07:00
Michael Ellerman 41ec8cdcfa selftests/kcmp: Don't include kernel headers
The kcmp test mucks with the include path to bring in the kernel
headers, and x86 headers too for reasons that are not clear.

Now that kcmp.h is exported none of that should be necessary.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2014-12-02 13:53:15 -07:00
Eric W. Biederman 4a44a19b47 mnt: Update unprivileged remount test
- MNT_NODEV should be irrelevant except when reading back mount flags,
  no longer specify MNT_NODEV on remount.

- Test MNT_NODEV on devpts where it is meaningful even for unprivileged mounts.

- Add a test to verify that remount of a prexisting mount with the same flags
  is allowed and does not change those flags.

- Cleanup up the definitions of MS_REC, MS_RELATIME, MS_STRICTATIME that are used
  when the code is built in an environment without them.

- Correct the test error messages when tests fail.  There were not 5 tests
  that tested MS_RELATIME.

Cc: stable@vger.kernel.org
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
2014-12-02 10:46:48 -06:00
Tim Bird 3c415707b3 kselftest: Move the docs to the Documentation dir
Also, adjust the formatting a bit, and expand the section about using
TARGETS= on the make command line.

Signed-off-by: Tim Bird <tim.bird@sonymobile.com>
Acked-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2014-11-24 10:49:54 -07:00
Steven Rostedt (Red Hat) 17150fef4a ktest: Add back "tail -1" to kernelrelease make
Commit 52d21580b3 "ktest: Use make -s kernelrelease" fixed commit
7ff525712a "kbuild: fake the "Entering directory ..." message more simply"
as that commit added output after the make kernelrelease. But there's still
some build scripts that are used by ktest that has output before the make
is executed, and requires that only the last line is printed.

Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-11-23 15:13:44 -05:00
Steven Rostedt (Red Hat) 18656c7099 ktest: Add name to running title
Instead of just showing the test type of test in the start of the
test, like this:

  RUNNING TEST 1 of 26 with option build defconfig

Add the name (if it is defined) as well, like this:

  RUNNING TEST 1 of 26 (arm64 aarch64-linux) with option build defconfig

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-11-21 19:38:58 -05:00
Steven Rostedt (Red Hat) 22c37a9ac4 ktest: Allow tests to undefine default options
Tests can set options that override the default ones. But if a test
tries to undefine a default option, it is simply ignored and the
default option stays as is.

For example, if you want to have a test that defines no MIN_CONFIG
then the test should be able to do that with:

   TEST_START
   MIN_CONFIG =

Which should make MIN_CONFIG not defined for that test. But the way
the code currently works, undefined options in tests are dropped.
This is because the NULL options are evaluated during the reading of
the config file and since one can disable default options in the default
section with this method, it is evaluated there (the option turns to a
undef). But undef options in the test section mean to use the default
option.

To fix this, keep the empty string in the option during the reading
of the config file, and then evaluate it when running the test. This
will allow tests to null out default options.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-11-21 19:38:57 -05:00
Steven Rostedt (Red Hat) 9972fc0b85 ktest: Fix make_min_config to handle new assign_configs call
Commit 6071c22e17 "ktest: Rewrite the config-bisect to actually work"
fixed the config-bisect to work nicely but in doing so it broke
make_min_config by changing the way assign_configs works.

The assign_configs function now adds the config to the hash even if
it is disabled, but changes the hash value to be that of the
line "# CONFIG_FOO is not set". Unfortunately, the make_min_config
test only checks to see if the config is removed. It now needs to
check if the config is in the hash and not set to be disabled.

Cc: stable@vger.kernel.org # 3.17+
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-11-21 19:38:56 -05:00
Michal Marek 52d21580b3 ktest: Use make -s kernelrelease
The previous tail -1 broke with commit 7ff525712a ("kbuild: fake the
"Entering directory ..." message more simply")

Link: http://lkml.kernel.org/r/20141022194408.GA20989@pobox.suse.cz

Reported-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-11-21 19:37:56 -05:00
Ingo Molnar d360b78f99 Merge branch 'rcu/next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull RCU updates from Paul E. McKenney:

 - Streamline RCU's use of per-CPU variables, shifting from "cpu"
   arguments to functions to "this_"-style per-CPU variable accessors.

 - Signal-handling RCU updates.

 - Real-time updates.

 - Torture-test updates.

 - Miscellaneous fixes.

 - Documentation updates.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-11-20 08:57:58 +01:00
Shuah Khan 884716497d selftests/timers: change test to use ksft framework
Change timers test to use kselftest framework to report
test results.

Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2014-11-17 10:39:30 -07:00
Shuah Khan e061bcd885 selftests/kcmp: change test to use ksft framework
Change kcmp test to use kselftest framework to report
test results and test statistics.

Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2014-11-17 10:39:24 -07:00
Shuah Khan 56661564e1 selftests/ipc: change test to use ksft framework
Change ipc test to use kselftest framework to report
test results. With this change this test exits with
EXIT_FAIL instead of -errno. Changed print errno in
test fail messages to not loose that information.

Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2014-11-17 10:39:15 -07:00
Shuah Khan b36169041c selftests/breakpoints: change test to use ksft framework
Change breakpoints test to use kselftest framework to report
test results.

Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2014-11-17 10:39:08 -07:00
Shuah Khan 7fb2c3ea28 selftests: add kselftest framework for uniform test reporting
Add kselftest framework for tests to use. This is a light
weight framework provides a set of interfaces to report test
results. Tests can use these interfaces to report pass, and
fail cases as well as when failure is due to configuration
problems such as missing modules, or when a test that is should
fail, fails as expected, and a test that should fail, passes.
The framework uses POSIX standard return codes for reporting
results to address the needs of users that want to run the kernel
selftests from their user-space test suites and want to know why a
test failed. In addition, the framework includes interfaces to use
to report test statistics on number of tests passed and failed.

Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2014-11-17 10:38:56 -07:00
Shuah Khan 3c25fa14f0 selftests/user: move test out of Makefile into a shell script
Currently user copy test is run from the Makefile. Move it out
of the Makefile to be run from a shell script to allow the test
to be run as stand-alone test, in addition to allowing the test
run from a make target.

Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2014-11-17 10:05:35 -07:00
Linus Torvalds 5cf5203704 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) sunhme driver lacks DMA mapping error checks, based upon a report by
    Meelis Roos.

 2) Fix memory leak in mvpp2 driver, from Sudip Mukherjee.

 3) DMA memory allocation sizes are wrong in systemport ethernet driver,
    fix from Florian Fainelli.

 4) Fix use after free in mac80211 defragmentation code, from Johannes
    Berg.

 5) Some networking uapi headers missing from Kbuild file, from Stephen
    Hemminger.

 6) TUN driver gets csum_start offset wrong when VLAN accel is enabled,
    and macvtap has a similar bug, from Herbert Xu.

 7) Adjust several tunneling drivers to set dev->iflink after registry,
    because registry sets that to -1 overwriting whatever we did.  From
    Steffen Klassert.

 8) Geneve forgets to set inner tunneling type, causing GSO segmentation
    to fail on some NICs.  From Jesse Gross.

 9) Fix several locking bugs in stmmac driver, from Fabrice Gasnier and
    Giuseppe CAVALLARO.

10) Fix spurious timeouts with NewReno on low traffic connections, from
    Marcelo Leitner.

11) Fix descriptor updates in enic driver, from Govindarajulu
    Varadarajan.

12) PPP calls bpf_prog_create() with locks held, which isn't kosher.
    Fix from Takashi Iwai.

13) Fix NULL deref in SCTP with malformed INIT packets, from Daniel
    Borkmann.

14) psock_fanout selftest accesses past the end of the mmap ring, fix
    from Shuah Khan.

15) Fix PTP timestamping for VLAN packets, from Richard Cochran.

16) netlink_unbind() calls in netlink pass wrong initial argument, from
    Hiroaki SHIMODA.

17) vxlan socket reuse accidently reuses a socket when the address
    family is different, so we have to explicitly check this, from
    Marcelo Lietner.

18) Fix missing include in nft_reject_bridge.c breaking the build on ppc
    and other architectures, from Guenter Roeck.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (75 commits)
  vxlan: Do not reuse sockets for a different address family
  smsc911x: power-up phydev before doing a software reset.
  lib: rhashtable - Remove weird non-ASCII characters from comments
  net/smsc911x: Fix delays in the PHY enable/disable routines
  net/smsc911x: Fix rare soft reset timeout issue due to PHY power-down mode
  netlink: Properly unbind in error conditions.
  net: ptp: fix time stamp matching logic for VLAN packets.
  cxgb4 : dcb open-lldp interop fixes
  selftests/net: psock_fanout seg faults in sock_fanout_read_ring()
  net: bcmgenet: apply MII configuration in bcmgenet_open()
  net: bcmgenet: connect and disconnect from the PHY state machine
  net: qualcomm: Fix dependency
  ixgbe: phy: fix uninitialized status in ixgbe_setup_phy_link_tnx
  net: phy: Correctly handle MII ioctl which changes autonegotiation.
  ipv6: fix IPV6_PKTINFO with v4 mapped
  net: sctp: fix memory leak in auth key management
  net: sctp: fix NULL pointer dereference in af->from_addr_param on malformed packet
  net: ppp: Don't call bpf_prog_create() in ppp_lock
  net/mlx4_en: Advertize encapsulation offloads features only when VXLAN tunnel is set
  cxgb4 : Fix bug in DCB app deletion
  ...
2014-11-13 17:54:08 -08:00
Paul E. McKenney 9ea6c58856 Merge branches 'torture.2014.11.03a', 'cpu.2014.11.03a', 'doc.2014.11.13a', 'fixes.2014.11.13a', 'signal.2014.10.29a' and 'rt.2014.10.29a' into HEAD
cpu.2014.11.03a: Changes for per-CPU variables.
doc.2014.11.13a: Documentation updates.
fixes.2014.11.13a: Miscellaneous fixes.
signal.2014.10.29a: Signal changes.
rt.2014.10.29a: Real-time changes.
torture.2014.11.03a: torture-test changes.
2014-11-13 10:39:04 -08:00
Shuah Khan fbf8e7211a selftests/net: psock_fanout seg faults in sock_fanout_read_ring()
The while loop in sock_fanout_read_ring() checks mmap region
bounds after access, causing it to segfault. Fix it to check
count before accessing header->tp_status. This problem can be
reproduced consistently when the test in run as follows:

    make -C tools/testing/selftests TARGETS=net run_tests
    or
    make run_tests from tools/testing/selftests
    or
    make run_test from tools/testing/selftests/net

Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-11 21:43:34 -05:00
Namhyung Kim 815b18ea66 ftracetest: Add basic event tracing test cases
This patch adds basic event tracing tests like enable/disable with
top-level, subsystem-level and individual event files.

  # ./ftracetest
  === Ftrace unit tests ===
  [1] Basic trace file check	[PASS]
  [2] Basic trace clock test	[PASS]
  [3] Basic event tracing check	[PASS]
  [4] Basic test for tracers	[PASS]
  [5] event tracing - enable/disable with top level files	[PASS]
  [6] event tracing - enable/disable with subsystem level files	[PASS]
  [7] event tracing - enable/disable with event level files	[PASS]
  [8] ftrace - function graph filters	[PASS]
  [9] ftrace - function profiler with function tracing	[PASS]
  [10] ftrace - function graph filters with stack tracer	[PASS]
  [11] Kretprobe dynamic event with arguments	[PASS]
  [12] Kprobe dynamic event - busy event check	[PASS]
  [13] Kprobe dynamic event with arguments	[PASS]
  [14] Kprobe dynamic event - adding and removing	[PASS]

  # of passed:  14
  # of failed:  0
  # of unresolved:  0
  # of untested:  0
  # of unsupported:  0
  # of xfailed:  0
  # of undefined(test bug):  0

Link: http://lkml.kernel.org/r/1415239470-28705-3-git-send-email-namhyung@kernel.org

Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-11-06 08:40:59 -05:00
Namhyung Kim ce1ac64b93 ftracetest: Clear trace buffer after running kprobe testcases
The kprobe testcases create, use and delete dynamic events during the
test but didn't clear the trace buffer so it'll leave the result after
it finishes.

  # ./ftracetest
  ...

  # cat trace
  # tracer: nop
  #
  # entries-in-buffer/entries-written: 2/2   #P:12
  #
  #                              _-----=> irqs-off
  #                             / _----=> need-resched
  #                            | / _---=> hardirq/softirq
  #                            || / _--=> preempt-depth
  #                            ||| /     delay
  #           TASK-PID   CPU#  ||||    TIMESTAMP  FUNCTION
  #              | |       |   ||||       |         |
        ftracetest-26474 [009] d..1 79417.143782: Unknown type 1099
        ftracetest-26498 [009] d..1 79417.208034: Unknown type 1101

Link: http://lkml.kernel.org/r/1415239470-28705-2-git-send-email-namhyung@kernel.org

Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-11-06 08:39:39 -05:00
Namhyung Kim 347e0e46b1 ftracetest: Use logfile name supported by busybox's mktemp
When I run the ftracetest in a busybox docker container, I saw
following error.  Make the logfile template to comply with busybox's
mktemp.  It also keep the logfiles under the logs directory.

  # /linux/tools/testing/selftests/ftrace/ftracetest
  === Ftrace unit tests ===
  mktemp: unrecognized option `--tmpdir=/linux/tools/testing/selftests/ftrace/logs/20141106-003624/'
  BusyBox v1.22.1 (2014-05-22 23:22:11 UTC) multi-call binary.

  Usage: mktemp [-dt] [-p DIR] [TEMPLATE]

  Create a temporary file with name based on TEMPLATE and print its name.
  TEMPLATE must end with XXXXXX (e.g. [/dir/]nameXXXXXX).
  Without TEMPLATE, -t tmp.XXXXXX is assumed.

  	-d	  Make directory, not file
  	-q	  Fail silently on errors
  	-t	  Prepend base directory name to TEMPLATE
  	-p DIR	  Use DIR as a base directory (implies -t)
  	-u Do not create anything; print a name

  Base directory is: -p DIR, else $TMPDIR, else /tmp

  [1] Basic trace file check/linux/tools/testing/selftests/ftrace/ftracetest: line 244: can't create : nonexistent directory
  /linux/tools/testing/selftests/ftrace/ftracetest: line 244: can't create : nonexistent directory
						  [FAIL]

Link: http://lkml.kernel.org/r/1415239470-28705-1-git-send-email-namhyung@kernel.org

Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-11-06 08:38:46 -05:00
Steven Rostedt (Red Hat) c6c93242db ftracetest: Add a couple of ftrace test cases
Added three test cases to get the feel of adding tests to ftracetest.
The three cases are:

  function profiling test, to make sure function profiling still works
   with function tracing (was a regression)

  function graph filter test to make sure that function graph filtering works.

  function graph filter with stack tracing test to make sure that the function
   graph filter does filter and also continues to filter when another function tracer
   is running (like the stack tracer)

Link: http://lkml.kernel.org/r/20141103212737.696365174@goodmis.org
Link: http://lkml.kernel.org/r/20141104153028.602754370@goodmis.org

Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-11-06 08:35:52 -05:00
Steven Rostedt (Red Hat) ee3988c77e ftracetest: Add functions file that holds helper functions
Created the file tools/testing/ftrace/test.d/functions that will
hold helper functions.

Current helper functions include:

 Add clear_trace() helper to reset the trace file

   Used as a descriptive name to show that "echo > trace" is clearing
   the trace file.

 Add disable/enable_tracing() helper calls

   Add calls that disable and enable tracing respectively by echoing
   0 or 1 into tracing_on.

 Add helper reset_tracer() function

    Add a helper function reset_tracer() that will clear the current_tracer
    (echo nop > current_tracer).

Link: http://lkml.kernel.org/r/20141103212737.696365174@goodmis.org
Link: http://lkml.kernel.org/r/20141104153028.465517119@goodmis.org

Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-11-06 08:30:02 -05:00
Shuah Khan 7069a97a14 selftests/net: move test out of Makefile into a shell script
Currently bpf test run from the Makefile. Move it out of the
Makefile to be run from a shell script to allow the test to
be run as stand-alone test, in addition to allowing the test
run from a make target.

Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Acked-by: David S. Miller <davem@davemloft.net>
2014-11-05 08:12:40 -07:00
Linus Torvalds 1efa82ecb6 Running the ftracetests on a machine that had the debugfs file system
mounted in two locations caused the ftracetests to fail. This is because
 the ftracetests script does a grep of the /proc/mounts file to find
 where the debugfs file system is mounted. If it is mounted twice, then
 the grep returns two lines instead of just one. This causes the ftracetests
 to get confused and fail.
 
 Use "head -1" to only return the first mount point for debugfs.
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Merge tag 'ftracetest-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull ftracetest fix from Steven Rostedt:
 "Running the ftracetests on a machine that had the debugfs file system
  mounted in two locations caused the ftracetests to fail.  This is
  because the ftracetests script does a grep of the /proc/mounts file to
  find where the debugfs file system is mounted.  If it is mounted
  twice, then the grep returns two lines instead of just one.  This
  causes the ftracetests to get confused and fail.

  Use "head -1" to only return the first mount point for debugfs"

* tag 'ftracetest-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  ftracetest: Take the first debugfs mount found
2014-11-04 11:12:25 -08:00
Pranith Kumar edae018d95 rcutorture: Remove obsolete kversion param in kvm.sh
Now that we have removed configs based on kernel version, we can also remove the
kversion parameter in kvm.sh.

Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2014-11-03 19:26:40 -08:00
Pranith Kumar f8396fed2c rcutorture: Remove stale test configurations
Remove rcutorture configuration files which are no longer necessary.

Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2014-11-03 19:26:39 -08:00
Pranith Kumar 10d2e62c41 rcutorture: Enable RCU self test in configs
Add config and boot parameters to enable the self tests in rcutorture testing.

Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2014-11-03 19:26:38 -08:00
Paul E. McKenney 2f3fd499df torture: Run Linux-kernel binary out of results directory
The rcutorture scripts create a qemu-cmd script containing the actual
qemu command.  However, this command references the build directory,
which will be overwritten by later builds.  This commit therefore runs
the kernel out of the results directory so that less hand-editing is
required to re-run a previous test.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Pranith Kumar <bobby.prani@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2014-11-03 19:26:00 -08:00
Heiko Carstens 52100d7f1c ftracetest: Sort testcases
Make sure the order of the executed testcases is always the same.

Link: http://lkml.kernel.org/p/1413802323-5297-3-git-send-email-heiko.carstens@de.ibm.com

Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-11-03 14:15:47 -05:00
Heiko Carstens d20058f674 ftracetest: Add kprobes on ftrace testcase
Add a kprobes on ftrace testcase. The testcase verifies that
- enabling and disabling function tracing works on a function which
  already contains a dynamic kprobe
- adding and removing a dynamic kprobe works on a function which is
  already enabled for function tracing

Link: http://lkml.kernel.org/p/1413802323-5297-2-git-send-email-heiko.carstens@de.ibm.com

Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-11-03 14:15:46 -05:00
Steven Rostedt (Red Hat) e7dbb48958 ftracetest: Take the first debugfs mount found
Running ftracetests on a box that mounted debugfs in two locations
made the ftracetests fail. This is because the tests uses a grep
of debugfs from the /proc/mounts file to find the debugfs mount
point, and then appends "/tracing" to that string to get the tracing
directory.

If the debugfs directory is mounted twice, then that grep will return
two answers and appending "/tracing" to a string with two lines will
not work.

Use "head -1" to only take the first mount point found.

Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-11-03 13:42:49 -05:00
Pranith Kumar 28f6569ab7 rcu: Remove redundant TREE_PREEMPT_RCU config option
PREEMPT_RCU and TREE_PREEMPT_RCU serve the same function after
TINY_PREEMPT_RCU has been removed. This patch removes TREE_PREEMPT_RCU
and uses PREEMPT_RCU config option in its place.

Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2014-10-29 10:20:05 -07:00
Clark Williams 21871d7eff rcu: Unify boost and kthread priorities
Rename CONFIG_RCU_BOOST_PRIO to CONFIG_RCU_KTHREAD_PRIO and use this
value for both the per-CPU kthreads (rcuc/N) and the rcu boosting
threads (rcub/n).

Also, create the module_parameter rcutree.kthread_prio to be used on
the kernel command line at boot to set a new value (rcutree.kthread_prio=N).

Signed-off-by: Clark Williams <clark.williams@gmail.com>
[ paulmck: Ported to rcu/dev, applied Paul Bolle and Peter Zijlstra feedback. ]
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2014-10-29 10:19:41 -07:00
Paul E. McKenney 0eafa46823 rcu: Remove CONFIG_RCU_CPU_STALL_VERBOSE
The CONFIG_RCU_CPU_STALL_VERBOSE Kconfig parameter causes preemptible
RCU's CPU stall warnings to dump out any preempted tasks that are blocking
the current RCU grace period.  This information is useful, and the default
has been CONFIG_RCU_CPU_STALL_VERBOSE=y for some years.  It is therefore
time for this commit to remove this Kconfig parameter, so that future
kernel builds will always act as if CONFIG_RCU_CPU_STALL_VERBOSE=y.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2014-10-28 13:48:13 -07:00
Linus Torvalds d6dd50e07c Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RCU updates from Ingo Molnar:
 "The main changes in this cycle were:

   - changes related to No-CBs CPUs and NO_HZ_FULL

   - RCU-tasks implementation

   - torture-test updates

   - miscellaneous fixes

   - locktorture updates

   - RCU documentation updates"

* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (81 commits)
  workqueue: Use cond_resched_rcu_qs macro
  workqueue: Add quiescent state between work items
  locktorture: Cleanup header usage
  locktorture: Cannot hold read and write lock
  locktorture: Fix __acquire annotation for spinlock irq
  locktorture: Support rwlocks
  rcu: Eliminate deadlock between CPU hotplug and expedited grace periods
  locktorture: Document boot/module parameters
  rcutorture: Rename rcutorture_runnable parameter
  locktorture: Add test scenario for rwsem_lock
  locktorture: Add test scenario for mutex_lock
  locktorture: Make torture scripting account for new _runnable name
  locktorture: Introduce torture context
  locktorture: Support rwsems
  locktorture: Add infrastructure for torturing read locks
  torture: Address race in module cleanup
  locktorture: Make statistics generic
  locktorture: Teach about lock debugging
  locktorture: Support mutexes
  locktorture: Add documentation
  ...
2014-10-13 15:44:12 +02:00
Linus Torvalds 47e0de1a74 kselftest Updates for 3.18
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Merge tag 'kselftest-3.18-updates-1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kselftest updates from Shuah Khan:
 - fix for missing arguments to printf
 - fix to build failures on 32-bit systems.
 - enhancement to run memfd_test run on all architectures as most
   architectures support __NR_memfd_create

* tag 'kselftest-3.18-updates-1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests/memfd: Run test on all architectures
  memfd_test: Add missing argument to printf()
  memfd_test: Make it work on 32-bit systems
2014-10-12 09:16:43 -04:00
Linus Torvalds 90eac7eee2 This patch series starts a new selftests section in the
tools/testing/selftest directory called "ftrace" that holds tests
 aimed at testing ftrace and subsystems that use ftrace (like kprobes).
 
 So far only a few tests were written (by Masami Hiramatsu), but more will
 be added in the near future (3.19).
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Merge tag 'ftracetest-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull ftrace test code from Steven Rostedt:
 "This patch series starts a new selftests section in the
  tools/testing/selftest directory called "ftrace" that holds tests
  aimed at testing ftrace and subsystems that use ftrace (like kprobes).

  So far only a few tests were written (by Masami Hiramatsu), but more
  will be added in the near future (3.19)"

* tag 'ftracetest-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing/kprobes: Add selftest scripts testing kprobe-tracer as startup test
  ftracetest: Add POSIX.3 standard and XFAIL result codes
  ftracetest: Add kprobe basic testcases
  ftracetest: Add ftrace basic testcases
  ftracetest: Initial commit for ftracetest
2014-10-12 07:33:37 -04:00
Linus Torvalds 6bbcb1d3a2 A fix and a clean up to ktest, as well as two small features.
A way to allow users to skip a manual bisect.
  Allowing cherry picked patches to be tested.
 
 The cherry pick worked for a test I needed, but stressing it may
 not have all the desired effects. It doesn't cause any regressions
 so I kept it in.
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Merge tag 'ktest-v3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest

Pull ktest update from Steven Rostedt:
 "A fix and a clean up to ktest, as well as two small features.

   - A way to allow users to skip a manual bisect.
   - Allowing cherry picked patches to be tested.

  The cherry pick worked for a test I needed, but stressing it may not
  have all the desired effects.  It doesn't cause any regressions so I
  kept it in"

* tag 'ktest-v3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest:
  ktest: Don't bother with bisect good or bad on replay
  ktest: Fix check for new kernel success on rebooting to good kernel
  ktest: add ability to skip during BISECT_MANUAL
  ktest: Add PATCHCHECK_CHERRY
2014-10-12 07:32:26 -04:00
Linus Torvalds fd9879b9bb Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux
Pull powerpc updates from Michael Ellerman:
 "Here's a first pull request for powerpc updates for 3.18.

  The bulk of the additions are for the "cxl" driver, for IBM's Coherent
  Accelerator Processor Interface (CAPI).  Most of it's in drivers/misc,
  which Greg & Arnd maintain, Greg said he was happy for us to take it
  through our tree.

  There's the usual minor cleanups and fixes, including a bit of noise
  in drivers from some of those.  A bunch of updates to our EEH code,
  which has been getting more testing.  Several nice speedups from
  Anton, including 20% in clear_page().

  And a bunch of updates for freescale from Scott"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux: (130 commits)
  cxl: Fix afu_read() not doing finish_wait() on signal or non-blocking
  cxl: Add documentation for userspace APIs
  cxl: Add driver to Kbuild and Makefiles
  cxl: Add userspace header file
  cxl: Driver code for powernv PCIe based cards for userspace access
  cxl: Add base builtin support
  powerpc/mm: Add hooks for cxl
  powerpc/opal: Add PHB to cxl mode call
  powerpc/mm: Add new hash_page_mm()
  powerpc/powerpc: Add new PCIe functions for allocating cxl interrupts
  cxl: Add new header for call backs and structs
  powerpc/powernv: Split out set MSI IRQ chip code
  powerpc/mm: Export mmu_kernel_ssize and mmu_linear_psize
  powerpc/msi: Improve IRQ bitmap allocator
  powerpc/cell: Make spu_flush_all_slbs() generic
  powerpc/cell: Move data segment faulting code out of cell platform
  powerpc/cell: Move spu_handle_mm_fault() out of cell platform
  powerpc/pseries: Use new defines when calling H_SET_MODE
  powerpc: Update contact info in Documentation files
  powerpc/perf/hv-24x7: Simplify catalog_read()
  ...
2014-10-11 20:34:00 -04:00
Konstantin Khlebnikov 0085d61fe0 selftests/vm/transhuge-stress: stress test for memory compaction
This tool induces memory fragmentation via sequential allocation of
transparent huge pages and splitting off everything except their last
sub-pages.  It easily generates pressure to the memory compaction code.

$ perf stat -e 'compaction:*' -e 'migrate:*' ./transhuge-stress
transhuge-stress: allocate 7858 transhuge pages, using 15716 MiB virtual memory and 61 MiB of ram
transhuge-stress: 1.653 s/loop, 0.210 ms/page,   9504.828 MiB/s	7858 succeed,    0 failed, 2439 different pages
transhuge-stress: 1.537 s/loop, 0.196 ms/page,  10226.227 MiB/s	7858 succeed,    0 failed, 2364 different pages
transhuge-stress: 1.658 s/loop, 0.211 ms/page,   9479.215 MiB/s	7858 succeed,    0 failed, 2179 different pages
transhuge-stress: 1.617 s/loop, 0.206 ms/page,   9716.992 MiB/s	7858 succeed,    0 failed, 2421 different pages
^C./transhuge-stress: Interrupt

 Performance counter stats for './transhuge-stress':

         1.744.051      compaction:mm_compaction_isolate_migratepages
             1.014      compaction:mm_compaction_isolate_freepages
         1.744.051      compaction:mm_compaction_migratepages
             1.647      compaction:mm_compaction_begin
             1.647      compaction:mm_compaction_end
         1.744.051      migrate:mm_migrate_pages
                 0      migrate:mm_numa_migrate_ratelimit

       7,964696835 seconds time elapsed

Signed-off-by: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Rafael Aquini <aquini@redhat.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-10-09 22:26:01 -04:00
Ingo Molnar fd19bda491 Merge branch 'rcu/next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull additional commits for locktorture, from Paul E. McKenney.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-10-09 08:39:25 +02:00
Masami Hiramatsu 89c5497d1f tracing/kprobes: Add selftest scripts testing kprobe-tracer as startup test
Add two selftest scripts which tests kprobe-tracer as the startup
selftest does.
These test cases are testing that the kprobe_event can accept a
kprobe event with $stack related arguments and a kretprobe event
with $retval argument.

Link: http://lkml.kernel.org/p/20141008040307.13415.45145.stgit@kbuild-f20.novalocal

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-10-08 11:21:46 -04:00
Steven Rostedt (Red Hat) d832d74338 ktest: Don't bother with bisect good or bad on replay
If git bisect reply is being used in the bisect tests, don't bother
doing the git bisect good or git bisect bad calls. The git bisect
reply will override them anyway, and that's called immediately
after the other two. Going the git bisect (good|bad) is just a
waste of time.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-10-07 16:34:25 -04:00
Steven Rostedt (Red Hat) 995bc43140 ktest: Fix check for new kernel success on rebooting to good kernel
The reboot function when rebooting back to a good kernel has a check
to make sure that a new kernel was indeed booted. But that check
uses a timeout value, which when calling the monitor will still
return success if the timeout is hit (no bug was found). It should
return an error to let the reboot code know that a new kernel was
not reached. Only the reboot code checks the return value of the
monitor.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-10-07 16:31:07 -04:00
Masami Hiramatsu 915de2adb5 ftracetest: Add POSIX.3 standard and XFAIL result codes
Add XFAIL and POSIX 1003.3 standard codes (UNRESOLVED/
UNTESTED/UNSUPPORTED) as result codes. These are used for the
results that test case is expected to fail or unsupported
feature (by config).

To return these result code, this introduces exit_unresolved,
exit_untested, exit_unsupported and exit_xfail functions,
which use real-time signals to notify the result code to
ftracetest.

This also set "errexit" option for the testcases, so that
the tests don't need to exit explicitly.

Note that if the test returns UNRESOLVED/UNSUPPORTED/FAIL,
its test log including executed commands is shown on console
and main logfile as below.

  ------
  # ./ftracetest samples/
  === Ftrace unit tests ===
  [1] failure-case example        [FAIL]
  execute: /home/fedora/ksrc/linux-3/tools/testing/selftests/ftrace/samples/fail.tc
  + . /home/fedora/ksrc/linux-3/tools/testing/selftests/ftrace/samples/fail.tc
  ++ cat non-exist-file
  cat: non-exist-file: No such file or directory
  [2] pass-case example   [PASS]
  [3] unresolved-case example     [UNRESOLVED]
  execute: /home/fedora/ksrc/linux-3/tools/testing/selftests/ftrace/samples/unresolved.tc
  + . /home/fedora/ksrc/linux-3/tools/testing/selftests/ftrace/samples/unresolved.tc
  ++ trap exit_unresolved INT
  ++ kill -INT 29324
  +++ exit_unresolved
  +++ kill -s 38 29265
  +++ exit 0
  [4] unsupported-case example    [UNSUPPORTED]
  execute: /home/fedora/ksrc/linux-3/tools/testing/selftests/ftrace/samples/unsupported.tc
  + . /home/fedora/ksrc/linux-3/tools/testing/selftests/ftrace/samples/unsupported.tc
  ++ exit_unsupported
  ++ kill -s 40 29265
  ++ exit 0
  [5] untested-case example       [UNTESTED]
  [6] xfail-case example  [XFAIL]

  # of passed:  1
  # of failed:  1
  # of unresolved:  1
  # of untested:  1
  # of unsupported:  1
  # of xfailed:  1
  # of undefined(test bug):  0
  ------

Link: http://lkml.kernel.org/p/20140929120211.30203.99510.stgit@kbuild-f20.novalocal

Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-10-03 16:44:02 -04:00
Davidlohr Bueso e34191fad8 locktorture: Support rwlocks
Add a "rw_lock" torture test to stress kernel rwlocks and their irq
variant. Reader critical regions are 5x longer than writers. As such
a similar ratio of lock acquisitions is seen in the statistics. In the
case of massive contention, both hold the lock for 1/10 of a second.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2014-09-30 00:10:00 -07:00
Michael Ellerman fe2a1bb1db selftests/powerpc: Add test of load_unaligned_zero_pad()
It is a rarely exercised case, so we want to have a test to ensure it
works as required.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-09-30 14:59:12 +10:00
Masami Hiramatsu 2909ef28b1 ftracetest: Add kprobe basic testcases
Add basic testcases for kprobe dynamic events.
This also shows that the ftracetest accepts sub-directory
for new testcases.

Link: http://lkml.kernel.org/p/20140922234254.23415.46964.stgit@kbuild-f20.novalocal

Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-09-23 09:32:27 -04:00
Masami Hiramatsu 03e166450f ftracetest: Add ftrace basic testcases
Add ftrace basic testcases. This just checks ftrace debugfs
interface works as it is designed.

Link: http://lkml.kernel.org/p/20140922234252.23415.62897.stgit@kbuild-f20.novalocal

Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-09-23 09:32:00 -04:00
Masami Hiramatsu 6e68e6c5e4 ftracetest: Initial commit for ftracetest
ftracetest is a collection of testcase shell-scripts for ftrace.
To avoid regressions of ftrace, these testcases check correct
ftrace behaviors. If someone would like to add any features on
ftrace, the patch series should have at least one testcase for
checking the new behavior.

Link: http://lkml.kernel.org/p/20140922234250.23415.68758.stgit@kbuild-f20.novalocal

Acked-by: Shuah Khan <shuahkh@osg.samsung.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-09-23 09:31:05 -04:00
Ingo Molnar 6273143359 Merge branch 'rcu/next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull the v3.18 RCU changes from Paul E. McKenney:

"
  * Update RCU documentation.  These were posted to LKML at
    https://lkml.org/lkml/2014/8/28/378.

  * Miscellaneous fixes.  These were posted to LKML at
    https://lkml.org/lkml/2014/8/28/386.  An additional fix that
    eliminates a documented (but now inconvenient) deadlock between
    RCU hotplug and expedited grace periods was posted at
    https://lkml.org/lkml/2014/8/28/573.

  * Changes related to No-CBs CPUs and NO_HZ_FULL.  These were posted
    to LKML at https://lkml.org/lkml/2014/8/28/412.

  * Torture-test updates.  These were posted to LKML at
    https://lkml.org/lkml/2014/8/28/546 and at
    https://lkml.org/lkml/2014/9/11/1114.

  * RCU-tasks implementation.  These were posted to LKML at
    https://lkml.org/lkml/2014/8/28/540.
"

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-09-23 07:21:42 +02:00
Chris J Arges fee9d3e61d ktest: add ability to skip during BISECT_MANUAL
When doing a manual bisect, a build can fail or a test can be inconclusive.
In these cases it would be helpful to be able to skip the test entirely.

Link: http://lkml.kernel.org/r/1409164021-2136-1-git-send-email-chris.j.arges@canonical.com

Reviewed-by: Satoru Takeuchi <satoru.takeuchi@gmail.com>
Signed-off-by: Chris J Arges <chris.j.arges@canonical.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-09-19 20:12:52 -04:00
Steven Rostedt (Red Hat) 23a0e1611b ktest: Add PATCHCHECK_CHERRY
Add a way to run a patchcheck test on the commits that are in one branch
but not in another. This uses git cherry to find a list of commits to
test each one with.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-09-19 20:10:39 -04:00
Pranith Kumar ce6a144a0d selftests/memfd: Run test on all architectures
Remove the dependence on x86 to run the memfd test. Verfied on 32-bit powerpc.

Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2014-09-17 08:00:16 -06:00
Paul E. McKenney 59da22a020 rcutorture: Rename rcutorture_runnable parameter
This commit changes rcutorture_runnable to torture_runnable, which is
consistent with the names of the other parameters and is a bit shorter
as well.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2014-09-16 13:41:44 -07:00
Paul E. McKenney aaa693e3d8 locktorture: Add test scenario for rwsem_lock
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2014-09-16 13:41:43 -07:00
Paul E. McKenney 862917a52b locktorture: Add test scenario for mutex_lock
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2014-09-16 13:41:42 -07:00
Paul E. McKenney 0acf015316 locktorture: Make torture scripting account for new _runnable name
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2014-09-16 13:41:41 -07:00
Paul E. McKenney 96b4672703 Merge branch 'rcu-tasks.2014.09.10a' into HEAD
rcu-tasks.2014.09.10a: Add RCU-tasks flavor of RCU.
2014-09-16 10:10:44 -07:00
Paul E. McKenney a53dd6a656 rcutorture: Add RCU-tasks tests to default rcutorture list
Although the test cases have been added, they must be specified explicitly
via the kvm.sh --configs argument in order to run them.  This commit
therefore adds the RCU-tasks tests to the CFLIST so that they will be
run automatically by default.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2014-09-10 14:48:05 -07:00
Paul E. McKenney f1a828f5fa rcutorture: Add RCU-tasks test cases
This commit adds the TASKS01 and TASKS02 Kconfig fragments, along with
the corresponding TASKS01.boot and TASKS02.boot boot-parameter files
specifying that rcutorture test RCU-tasks instead of the default flavor.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2014-09-07 16:27:25 -07:00
Paul E. McKenney bc51896da2 torture: Check for nul bytes in console output
When starting a new torture run while an old one is still running, both
qemu processes can be outputting to the same console.out file.  This can
cause quite a bit of confusion, so this commit checks for this situation,
which is normally indicated by nul bytes in the console output.  Yes,
if your new run uses up an exact number of blocks of the file, this
check will be ineffective, but the odds are not bad.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Pranith Kumar <bobby.prani@gmail.com>
2014-09-07 16:24:49 -07:00
Paul E. McKenney b76592412a torture: Print PID in hung-kernel diagnostic message
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Pranith Kumar <bobby.prani@gmail.com>
2014-09-07 16:24:48 -07:00
Paul E. McKenney 188c1e896c rcutorture: Specify CONFIG_CPUMASK_OFFSTACK=y for TREE07
This commit specifies offstack cpumasks in TREE07 in order to catch
references to unallocated cpumask_var_t variables.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Pranith Kumar <bobby.prani@gmail.com>
2014-09-07 16:24:46 -07:00
Paul E. McKenney ae867ff03d rcutorture: Specify MAXSMP=y for TREE01
Setting CONFIG_MAXSMP=y causes cpumasks to be moved offstack, which
introduces the possibility of NULL cpumask_var_t pointers.  This commit
therefore enables CONFIG_MAXSMP=y in TREE01 to increase test coverage.
However, because CONFIG_MAXSMP=y implies 8192 CPUs, we need to use
the maxcpus= boot parameter to limit the number of CPUs to something
reasonable, which in turn requires updating the scripts to handle this.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Pranith Kumar <bobby.prani@gmail.com>
2014-09-07 16:24:45 -07:00
Paul E. McKenney 9e62b0efdc rcutorture: Test partial nohz_full= configuration
The current set of tests covers only cases where either all possible CPUs
are nohz_full= CPUs or none of them are.  Because there have been some
recent bug escapes in cases where only some of the CPUs are nohz_full=
CPUs, this commit add a configuration where only half of the CPUs are
nohz_full= CPUs.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Pranith Kumar <bobby.prani@gmail.com>
2014-09-07 16:24:44 -07:00
Paul E. McKenney 616fd166f6 rcu: Add step to initrd documentation
This commit tries to get people into the correct directory before
creating the initrd directory.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Pranith Kumar <bobby.prani@gmail.com>
2014-09-07 16:24:43 -07:00
Pranith Kumar 3327d924a7 rcutorture: Set executable bit and drop bash from Usage
This commit sets the executable bit on test scripts config2frag.sh
and kvm.sh.  Since #!/bin/bash is set in all the scripts, this commit
also drops it from all usage lines because the scripts can now all be
invoked directly.

Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2014-09-07 16:24:38 -07:00
Pranith Kumar 1a5e31fbf9 rcutorture: Use bash shell for all the test scripts
Some of the scripts encode a default /bin/sh shell. On systems which use
dash as default shell, these scripts fail as they are bash scripts. I
encountered this while testing the sprintf() changes on a Debian system
where dash is the default shell.

This commit changes all such uses to use bash explicitly.

Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2014-09-07 16:24:32 -07:00
Pranith Kumar 2ed3692837 memfd_test: Add missing argument to printf()
Add a missing path argument buf to printf()

Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2014-09-04 11:01:26 -06:00
Pranith Kumar 57e67900d4 memfd_test: Make it work on 32-bit systems
This test currently fails on 32-bit systems since we use u64 type to pass the
flags to fcntl.

This commit changes this to use 'unsigned int' type for flags to fcntl making it
work on 32-bit systems.

Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2014-09-04 10:59:03 -06:00
Phong Tran 498b473af9 tools: selftests: fix build issue with make kselftests target
Fix the typo of ARCH when running 'make kselftests'.  Change the 'X86'
to 'x86'.  Test by compilation.

Signed-off-by: Phong Tran <tranmanphong@gmail.com>
Cc: David Herrmann <dh.herrmann@gmail.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Shuah Khan <shuah.kh@samsung.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Michal Marek <mmarek@suse.cz>
Cc: Shuah Khan <shuahkh@osg.samsung.com>
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
Linus Torvalds 77e40aae76 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull namespace updates from Eric Biederman:
 "This is a bunch of small changes built against 3.16-rc6.  The most
  significant change for users is the first patch which makes setns
  drmatically faster by removing unneded rcu handling.

  The next chunk of changes are so that "mount -o remount,.." will not
  allow the user namespace root to drop flags on a mount set by the
  system wide root.  Aks this forces read-only mounts to stay read-only,
  no-dev mounts to stay no-dev, no-suid mounts to stay no-suid, no-exec
  mounts to stay no exec and it prevents unprivileged users from messing
  with a mounts atime settings.  I have included my test case as the
  last patch in this series so people performing backports can verify
  this change works correctly.

  The next change fixes a bug in NFS that was discovered while auditing
  nsproxy users for the first optimization.  Today you can oops the
  kernel by reading /proc/fs/nfsfs/{servers,volumes} if you are clever
  with pid namespaces.  I rebased and fixed the build of the
  !CONFIG_NFS_FS case yesterday when a build bot caught my typo.  Given
  that no one to my knowledge bases anything on my tree fixing the typo
  in place seems more responsible that requiring a typo-fix to be
  backported as well.

  The last change is a small semantic cleanup introducing
  /proc/thread-self and pointing /proc/mounts and /proc/net at it.  This
  prevents several kinds of problemantic corner cases.  It is a
  user-visible change so it has a minute chance of causing regressions
  so the change to /proc/mounts and /proc/net are individual one line
  commits that can be trivially reverted.  Unfortunately I lost and
  could not find the email of the original reporter so he is not
  credited.  From at least one perspective this change to /proc/net is a
  refgression fix to allow pthread /proc/net uses that were broken by
  the introduction of the network namespace"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
  proc: Point /proc/mounts at /proc/thread-self/mounts instead of /proc/self/mounts
  proc: Point /proc/net at /proc/thread-self/net instead of /proc/self/net
  proc: Implement /proc/thread-self to point at the directory of the current thread
  proc: Have net show up under /proc/<tgid>/task/<tid>
  NFS: Fix /proc/fs/nfsfs/servers and /proc/fs/nfsfs/volumes
  mnt: Add tests for unprivileged remount cases that have found to be faulty
  mnt: Change the default remount atime from relatime to the existing value
  mnt: Correct permission checks in do_remount
  mnt: Move the test for MNT_LOCK_READONLY from change_mount_flags into do_remount
  mnt: Only change user settable mount flags in remount
  namespaces: Use task_lock and not rcu to protect nsproxy
2014-08-09 17:10:41 -07:00
David Herrmann 87b2d44026 selftests: add memfd/sealing page-pinning tests
Setting SEAL_WRITE is not possible if there're pending GUP users. This
commit adds selftests for memfd+sealing that use FUSE to create pending
page-references. FUSE is very helpful here in that it allows us to delay
direct-IO operations for an arbitrary amount of time. This way, we can
force the kernel to pin pages and then run our normal selftests.

Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Acked-by: Hugh Dickins <hughd@google.com>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: Ryan Lortie <desrt@desrt.ca>
Cc: Lennart Poettering <lennart@poettering.net>
Cc: Daniel Mack <zonque@gmail.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-08 15:57:31 -07:00
David Herrmann 4f5ce5e8d7 selftests: add memfd_create() + sealing tests
Some basic tests to verify sealing on memfds works as expected and
guarantees the advertised semantics.

Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Acked-by: Hugh Dickins <hughd@google.com>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: Ryan Lortie <desrt@desrt.ca>
Cc: Lennart Poettering <lennart@poettering.net>
Cc: Daniel Mack <zonque@gmail.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-08 15:57:31 -07:00
Thierry Fauck 8b6aaf65d3 tools/testing/selftests/ptrace/peeksiginfo.c: add PAGE_SIZE definition
On IBM powerpc where multiple page size value are supported, current
ppc64 and ppc64el distro don't define the PAGE_SIZE variable in
/usr/include as this is a dynamic value retrieved by the getpagesize()
or sysconf() defined in unistd.h.  The PAGE_SIZE variable sounds defined
when only one value is supported by the kernel.

As such, when the PAGE_SIZE definition doesn't exist system should
retrieve the dynamic value.

Signed-off-by: Thierry Fauck <thierry@linux.vnet.ibm.com>
Cc: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-08 15:57:25 -07:00
Linus Torvalds f536b3cae8 Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Pull powerpc updates from Ben Herrenschmidt:
 "This is the powerpc new goodies for 3.17.  The short story:

  The biggest bit is Michael removing all of pre-POWER4 processor
  support from the 64-bit kernel.  POWER3 and rs64.  This gets rid of a
  ton of old cruft that has been bitrotting in a long while.  It was
  broken for quite a few versions already and nobody noticed.  Nobody
  uses those machines anymore.  While at it, he cleaned up a bunch of
  old dusty cabinets, getting rid of a skeletton or two.

  Then, we have some base VFIO support for KVM, which allows assigning
  of PCI devices to KVM guests, support for large 64-bit BARs on
  "powernv" platforms, support for HMI (Hardware Management Interrupts)
  on those same platforms, some sparse-vmemmap improvements (for memory
  hotplug),

  There is the usual batch of Freescale embedded updates (summary in the
  merge commit) and fixes here or there, I think that's it for the
  highlights"

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (102 commits)
  powerpc/eeh: Export eeh_iommu_group_to_pe()
  powerpc/eeh: Add missing #ifdef CONFIG_IOMMU_API
  powerpc: Reduce scariness of interrupt frames in stack traces
  powerpc: start loop at section start of start in vmemmap_populated()
  powerpc: implement vmemmap_free()
  powerpc: implement vmemmap_remove_mapping() for BOOK3S
  powerpc: implement vmemmap_list_free()
  powerpc: Fail remap_4k_pfn() if PFN doesn't fit inside PTE
  powerpc/book3s: Fix endianess issue for HMI handling on napping cpus.
  powerpc/book3s: handle HMIs for cpus in nap mode.
  powerpc/powernv: Invoke opal call to handle hmi.
  powerpc/book3s: Add basic infrastructure to handle HMI in Linux.
  powerpc/iommu: Fix comments with it_page_shift
  powerpc/powernv: Handle compound PE in config accessors
  powerpc/powernv: Handle compound PE for EEH
  powerpc/powernv: Handle compound PE
  powerpc/powernv: Split ioda_eeh_get_state()
  powerpc/powernv: Allow to freeze PE
  powerpc/powernv: Enable M64 aperatus for PHB3
  powerpc/eeh: Aux PE data for error log
  ...
2014-08-07 08:50:34 -07:00
Linus Torvalds 29b88e23a9 Driver core patches for 3.17-rc1
Here's the big driver-core pull request for 3.17-rc1.
 
 Largest thing in here is the dma-buf rework and fence code, that touched
 many different subsystems so it was agreed it should go through this
 tree to handle merge issues.  There's also some firmware loading
 updates, as well as tests added, and a few other tiny changes, the
 changelog has the details.
 
 All have been in linux-next for a long time.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core updates from Greg KH:
 "Here's the big driver-core pull request for 3.17-rc1.

  Largest thing in here is the dma-buf rework and fence code, that
  touched many different subsystems so it was agreed it should go
  through this tree to handle merge issues.  There's also some firmware
  loading updates, as well as tests added, and a few other tiny changes,
  the changelog has the details.

  All have been in linux-next for a long time"

* tag 'driver-core-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (32 commits)
  ARM: imx: Remove references to platform_bus in mxc code
  firmware loader: Fix _request_firmware_load() return val for fw load abort
  platform: Remove most references to platform_bus device
  test: add firmware_class loader test
  doc: fix minor typos in firmware_class README
  staging: android: Cleanup style issues
  Documentation: devres: Sort managed interfaces
  Documentation: devres: Add devm_kmalloc() et al
  fs: debugfs: remove trailing whitespace
  kernfs: kernel-doc warning fix
  debugfs: Fix corrupted loop in debugfs_remove_recursive
  stable_kernel_rules: Add pointer to netdev-FAQ for network patches
  driver core: platform: add device binding path 'driver_override'
  driver core/platform: remove unused implicit padding in platform_object
  firmware loader: inform direct failure when udev loader is disabled
  firmware: replace ALIGN(PAGE_SIZE) by PAGE_ALIGN
  firmware: read firmware size using i_size_read()
  firmware loader: allow disabling of udev as firmware loader
  reservation: add suppport for read-only access using rcu
  reservation: update api and add some helpers
  ...

Conflicts:
	drivers/base/platform.c
2014-08-04 18:34:04 -07:00
Linus Torvalds 2521129a6d Char / Misc driver patches for 3.17-rc1
Here's the big driver misc / char pull request for 3.17-rc1.
 
 Lots of things in here, the thunderbolt support for Apple laptops, some
 other new drivers, testing fixes, and other good things.  All have been
 in linux-next for a long time.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char / misc driver patches from Greg KH:
 "Here's the big driver misc / char pull request for 3.17-rc1.

  Lots of things in here, the thunderbolt support for Apple laptops,
  some other new drivers, testing fixes, and other good things.  All
  have been in linux-next for a long time"

* tag 'char-misc-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (119 commits)
  misc: bh1780: Introduce the use of devm_kzalloc
  Lattice ECP3 FPGA: Correct endianness
  drivers/misc/ti-st: Load firmware from ti-connectivity directory.
  dt-bindings: extcon: Add support for SM5502 MUIC device
  extcon: sm5502: Change internal hardware switch according to cable type
  extcon: sm5502: Detect cable state after completing platform booting
  extcon: sm5502: Add support new SM5502 extcon device driver
  extcon: arizona: Get MICVDD against extcon device
  extcon: Remove unnecessary OOM messages
  misc: vexpress: Fix sparse non static symbol warnings
  mei: drop unused hw dependent fw status functions
  misc: bh1770glc: Use managed functions
  pcmcia: remove DEFINE_PCI_DEVICE_TABLE usage
  misc: remove DEFINE_PCI_DEVICE_TABLE usage
  ipack: Replace DEFINE_PCI_DEVICE_TABLE macro use
  drivers/char/dsp56k.c: drop check for negativity of unsigned parameter
  mei: fix return value on disconnect timeout
  mei: don't schedule suspend in pm idle
  mei: start disconnect request timer consistently
  mei: reset client connection state on timeout
  ...
2014-08-04 17:32:24 -07:00
Linus Torvalds 5bda4f638f Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RCU changes from Ingo Molar:
 "The main changes:

   - torture-test updates
   - callback-offloading changes
   - maintainership changes
   - update RCU documentation
   - miscellaneous fixes"

* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (32 commits)
  rcu: Allow for NULL tick_nohz_full_mask when nohz_full= missing
  rcu: Fix a sparse warning in rcu_report_unblock_qs_rnp()
  rcu: Fix a sparse warning in rcu_initiate_boost()
  rcu: Fix __rcu_reclaim() to use true/false for bool
  rcu: Remove CONFIG_PROVE_RCU_DELAY
  rcu: Use __this_cpu_read() instead of per_cpu_ptr()
  rcu: Don't use NMIs to dump other CPUs' stacks
  rcu: Bind grace-period kthreads to non-NO_HZ_FULL CPUs
  rcu: Simplify priority boosting by putting rt_mutex in rcu_node
  rcu: Check both root and current rcu_node when setting up future grace period
  rcu: Allow post-unlock reference for rt_mutex
  rcu: Loosen __call_rcu()'s rcu_head alignment constraint
  rcu: Eliminate read-modify-write ACCESS_ONCE() calls
  rcu: Remove redundant ACCESS_ONCE() from tick_do_timer_cpu
  rcu: Make rcu node arrays static const char * const
  signal: Explain local_irq_save() call
  rcu: Handle obsolete references to TINY_PREEMPT_RCU
  rcu: Document deadlock-avoidance information for rcu_read_unlock()
  scripts: Teach get_maintainer.pl about the new "R:" tag
  rcu: Update rcu torture maintainership filename patterns
  ...
2014-08-04 15:55:08 -07:00
Linus Torvalds c7ed326fa7 The big change here is the rewrite of config-bisect. The old way never
worked properly as it assumed the bad config was a subset of the good
 config, and just found the config that would break the build.
 
 The new way does a diff of the bad config verses the good config and makes
 the similar until it finds that one config works and the other does not
 and reports the config that makes that difference. The two configs do
 not need to be related. It is much more useful now.
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Merge tag 'ktest-v3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest

Pull config-bisect changes from Steven Rostedt:
 "The big change here is the rewrite of config-bisect.  The old way
  never worked properly as it assumed the bad config was a subset of the
  good config, and just found the config that would break the build.

  The new way does a diff of the bad config verses the good config and
  makes the similar until it finds that one config works and the other
  does not and reports the config that makes that difference.  The two
  configs do not need to be related.  It is much more useful now:

* tag 'ktest-v3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest:
  ktest: Update documentation on config_bisect
  ktest: Add the config bisect manual back
  ktest: Remove unused functions
  ktest: Put back in the CONFIG_BISECT_CHECK
  ktest: Rewrite the config-bisect to actually work
  ktest: Some cleanup for improving readability
  ktest: add 2nd parameter of run_command() to set the redirect target file
2014-08-04 11:48:26 -07:00
Eric W. Biederman db181ce011 mnt: Add tests for unprivileged remount cases that have found to be faulty
Kenton Varda <kenton@sandstorm.io> discovered that by remounting a
read-only bind mount read-only in a user namespace the
MNT_LOCK_READONLY bit would be cleared, allowing an unprivileged user
to the remount a read-only mount read-write.

Upon review of the code in remount it was discovered that the code allowed
nosuid, noexec, and nodev to be cleared.  It was also discovered that
the code was allowing the per mount atime flags to be changed.

The first naive patch to fix these issues contained the flaw that using
default atime settings when remounting a filesystem could be disallowed.

To avoid this problems in the future add tests to ensure unprivileged
remounts are succeeding and failing at the appropriate times.

Cc: stable@vger.kernel.org
Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2014-07-31 17:13:15 -07:00
Michael Ellerman f929a4641b selftests/powerpc: Add test of per-event excludes
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-07-28 14:11:33 +10:00
Michael Ellerman bd8bbd87f1 selftests/powerpc: Add a routine for retrieving an AUXV entry
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-07-28 14:11:33 +10:00
Michael Ellerman 985ac68eba selftests/powerpc: Add cycles test with MMCR2 handling
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-07-28 14:11:32 +10:00
Michael Ellerman c418a67872 selftests/powerpc: Dump MMCR2 as part of the EBB HW state
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-07-28 14:11:31 +10:00
Michael Ellerman 7d3fa96851 selftests/powerpc: Count more instructions & use decimal
Although we expect some small discrepancies for very large counts, we
seem to be able to count up to 64 billion instructions without too much
skew, so do so.

Also switch to using decimals for the instruction counts. This just
makes it easier to visually compare the expected vs actual values, as
well as the raw result from instructions.

Before:

  instructions: result 68719476753 running/enabled 13101961654
  cycles: result 38077343785 running/enabled 13101725752
  Looped for 68719476736 instructions, overhead 17
  Expected 68719476753
  Actual   68719476753
  Delta    0, 0.000000%
  success: count_instructions

After:
  instructions: result 64000000016 running/enabled 12197599964
  cycles: result 35412471674 running/enabled 12197534110
  Looped for 64000000000 instructions, overhead 16
  Expected 64000000016
  Actual   64000000016
  Delta    0, 0.000000%
  success: count_instructions

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-07-28 14:11:31 +10:00
Michael Ellerman 86450f20fb selftests/powerpc: Count instructions under scheduler pressure
Have a task eat some cpu while we are counting instructions to create
some scheduler pressure. The idea being to try and unearth any bugs we
have in counting that only appear when context switching is happening.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-07-28 14:11:30 +10:00
Michael Ellerman 1feaa87c2f selftests/powerpc: Add test of L3 bank handling
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-07-28 14:11:30 +10:00
Michael Ellerman 6873def900 selftests/powerpc: Move core_busy_loop() into asm
There is at least one bug in core_busy_loop(), we use r0, but it's
not in the clobber list. We were getting away with this it seems but
that was luck.

It's also fishy to be touching the stack, even if we do it below the
stack pointer. It seems we get away with it, but looking at the
generated code that may just be luck.

So move it into assembler, do all the stack handling by hand. We create
a stack frame to save the non-volatiles in, so we can muck around with
them.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-07-28 14:11:29 +10:00
Michael Ellerman 6861b44aa0 selftests/powerpc: Fix parse_proc_maps()
start and end should be unsigned long.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-07-28 14:11:28 +10:00
Michael Ellerman cbfd7dab2d selftests/powerpc: Don't ignore errors from sub Makefiles
Currently we ignore errors from our sub Makefiles. We inherited that
from the top-level selftests Makefile which aims to build and run as
many tests as possible and damn the torpedoes.

For the powerpc tests we'd instead like any errors to fail the build, so
we can automatically catch build failures.

We can achieve the best of both worlds by using -k, which tells make to
keep building when it hits an error, but still reports the error.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-07-28 14:11:28 +10:00
Kees Cook 0a8adf5847 test: add firmware_class loader test
This provides a simple interface to trigger the firmware_class loader
to test built-in, filesystem, and user helper modes. Additionally adds
tests via the new interface to the selftests tree.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-07-17 18:44:19 -07:00
Ingo Molnar 01c9db8271 Merge branch 'rcu/next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull RCU updates from Paul E. McKenney:

  * Update RCU documentation.

  * Miscellaneous fixes.

  * Maintainership changes.

  * Torture-test updates.

  * Callback-offloading changes.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-07-17 11:34:01 +02:00
Greg Kroah-Hartman 9f48c89862 Merge 3.16-rc5 into char-misc-next
This resolves a number of merge issues with changes in this tree and
Linus's tree at the same time.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-07-13 15:26:47 -07:00
Shuah Khan ddddda9bc4 tools: selftests - create a separate hotplug target for full range test
On some systems, hot-plug tests could hang forever waiting for cpu and
memory to be ready to be offlined. A special hot-plug target is created
to run full range of hot-plug tests. In default mode, hot-plug tests run
in safe mode with a limited scope. In limited mode, cpu-hotplug test is
run on a single cpu as opposed to all hotplug capable cpus, and memory
hotplug test is run on 2% of hotplug capable memory instead of 10%. In
addition to the above change, cpu-hotplug is chnged to change processor
affinity to cpu 0 so it doesn't impact itself while the test runs.

Signed-off-by: Shuah Khan <shuah.kh@samsung.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Michael Ellerman <michael@ellerman.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-07-11 18:13:06 -07:00
Shuah Khan 6e7e6c3484 tools: fix kcmp_test compile warnings
kcmp_test.c: In function ‘main’:
kcmp_test.c:85:5: warning: format ‘%li’ expects argument of type ‘long int’, but argument 2 has type ‘int’ [-Wformat=]
     ret, strerror(errno));
     ^

Signed-off-by: Shuah Khan <shuah.kh@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-07-11 18:11:18 -07:00
Shuah Khan b80f557042 tools: Fix mqueue Makefile compile linking order
Makefile compile linking order is incorrect causing the compile
to fail not finding librt symbols.

/tmp/cceTqwFh.o: In function `test_queue_fail':
mq_open_tests.c:(.text+0x6b): undefined reference to `mq_open'
mq_open_tests.c:(.text+0x80): undefined reference to `mq_getattr'
mq_open_tests.c:(.text+0xa2): undefined reference to `mq_close'
mq_open_tests.c:(.text+0xcf): undefined reference to `mq_unlink'
/tmp/cceTqwFh.o: In function `test_queue.constprop.6':
mq_open_tests.c:(.text+0x15a): undefined reference to `mq_open'
mq_open_tests.c:(.text+0x16f): undefined reference to `mq_getattr'
mq_open_tests.c:(.text+0x195): undefined reference to `mq_close'
mq_open_tests.c:(.text+0x1c2): undefined reference to `mq_unlink'
/tmp/cceTqwFh.o: In function `shutdown.part.0':
mq_open_tests.c:(.text.unlikely+0x5b): undefined reference to `mq_close'
mq_open_tests.c:(.text.unlikely+0x7a): undefined reference to `mq_unlink'
collect2: error: ld returned 1 exit status
make: *** [all] Error 1

Signed-off-by: Shuah Khan <shuah.kh@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-07-11 18:11:18 -07:00
Shuah Khan ef9feb682d tools: fix mq_open_tests compile warnings
Fix several compile warnings - these are repeats like the ones
below:

gcc -O2 -lrt mq_open_tests.c -o mq_open_tests
mq_open_tests.c: In function ‘main’:
mq_open_tests.c:295:2: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘rlim_t’ [-Wformat=]
  printf("\tRLIMIT_MSGQUEUE(soft):\t\t%d\n", saved_limits.rlim_cur);
  ^
mq_open_tests.c: In function ‘shutdown’:
mq_open_tests.c:83:9: warning: ignoring return value of ‘seteuid’, declared with attribute warn_unused_result [-Wunused-result]
  seteuid(0);

Signed-off-by: Shuah Khan <shuah.kh@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-07-11 18:11:18 -07:00
Shuah Khan f15fed3da8 tools: fix mq_perf_tests compile warnings
Fix numerous compile warnings in mq_perf_tests.c. All of these
are wrong format in printfs when printing nvsec.

Signed-off-by: Shuah Khan <shuah.kh@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-07-11 18:11:18 -07:00
Shuah Khan 5e4ff69503 tools: cpu-hotplug fix unexpected operator error
on-off-test is a bash script and invoked from /bin/sh
This results in the following error:

./on-off-test.sh: 9: [: !=: unexpected operator

Changed Makefile to use bash instead.

Signed-off-by: Shuah Khan <shuah.kh@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-07-11 18:11:18 -07:00
Shuah Khan 4813d2e736 tools: memory-hotplug fix unexpected operator error
on-off-test is a bash script and invoked from /bin/sh
This results in the following error:

./on-off-test.sh: 9: [: !=: unexpected operator

Changed Makefile to use bash instead.

Signed-off-by: Shuah Khan <shuah.kh@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-07-11 18:11:18 -07:00
Paul E. McKenney 1823172ab5 Merge branches 'doc.2014.07.08a', 'fixes.2014.07.09a', 'maintainers.2014.07.08b', 'nocbs.2014.07.07a' and 'torture.2014.07.07a' into HEAD
doc.2014.07.08a: Documentation updates.
fixes.2014.07.09a: Miscellaneous fixes.
maintainers.2014.07.08b: Maintainership updates.
nocbs.2014.07.07a: Callback-offloading fixes.
torture.2014.07.07a: Torture-test updates.
2014-07-09 09:16:54 -07:00
Paul E. McKenney 11992c703a rcu: Remove CONFIG_PROVE_RCU_DELAY
The CONFIG_PROVE_RCU_DELAY Kconfig parameter doesn't appear to be very
effective at finding race conditions, so this commit removes it.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Andi Kleen <ak@linux.intel.com>
[ paulmck: Remove definition and uses as noted by Paul Bolle. ]
2014-07-09 09:15:31 -07:00
Shuah Khan e84f1ab33c tools/testing/selftests/ipc/msgque.c: improve error handling when not running as root
The test fails in the middle when it is not run as root while accessing
/proc/sys/kernel/msg_next_id.  Changed it to check for root at the
beginning of the test and exit if not root.

Signed-off-by: Shuah Khan <shuah.kh@samsung.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Davidlohr Bueso <davidlohr@hp.com>
Cc: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-07-03 09:21:54 -07:00
Shuah Khan e98f776224 tools: memory-hotplug fix unexpected operator error
on-off-test uses "$UID != 0" to test for root, but $UID is a construct
specific to bash.  Using /bin/sh that isn't bash results in the
following error (due to the "$UID" part expanding to nothing):

  ./on-off-test.sh: 9: [: !=: unexpected operator

Change Makefile to use bash instead.

Signed-off-by: Shuah Khan <shuah.kh@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-07-03 09:21:53 -07:00
Shuah Khan 1bd702e665 tools: cpu-hotplug fix unexpected operator error
on-off-test uses "$UID != 0" to test for root, but $UID is a construct
specific to bash.  Using /bin/sh that isn't bash results in the
following error (due to the "$UID" part expanding to nothing):

  ./on-off-test.sh: 9: [: !=: unexpected operator

Change Makefile to use bash instead.

Signed-off-by: Shuah Khan <shuah.kh@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-07-03 09:21:53 -07:00
Paul E. McKenney 9bee2c6fb4 torture: Clean up diagnostics from --buildonly runs
Currently the post-processing complains about the lack of rcutorture
output when --buildonly is set and also emits misleading messages about
kernels being started and finishing.  This commit suppresses these
complaints and messages.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2014-06-26 10:58:41 -07:00
Paul E. McKenney 57e60d0b9e torture: Enable versions without CFcommon to function correctly
The CFcommon file must now be present, which makes using the current
scripts against old kernel versions cumbersome.  This commit therefore
makes the CFcommon file be optional, so that old kernel versions can be
used with current torture scripts.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2014-06-26 10:58:40 -07:00
Michael Ellerman aa83f3d897 selftests/powerpc: Use the test harness for the TM DSCR test
This gives us standardised success/failure output and also handles
killing the test if it runs forever (2 minutes).

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-06-24 14:29:41 +10:00
Linus Torvalds b7c8c1945c Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Pull more powerpc updates from Ben Herrenschmidt:
 "Here are the remaining bits I was mentioning earlier.  Mostly bug
  fixes and new selftests from Michael (yay !).  He also removed the WSP
  platform and A2 core support which were dead before release, so less
  clutter.

  One little "feature" I snuck in is the doorbell IPI support for
  non-virtualized P8 which speeds up IPIs significantly between threads
  of a core"

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (34 commits)
  powerpc/book3s: Fix some ABIv2 issues in machine check code
  powerpc/book3s: Fix guest MC delivery mechanism to avoid soft lockups in guest.
  powerpc/book3s: Increment the mce counter during machine_check_early call.
  powerpc/book3s: Add stack overflow check in machine check handler.
  powerpc/book3s: Fix machine check handling for unhandled errors
  powerpc/eeh: Dump PE location code
  powerpc/powernv: Enable POWER8 doorbell IPIs
  powerpc/cpuidle: Only clear LPCR decrementer wakeup bit on fast sleep entry
  powerpc/powernv: Fix killed EEH event
  powerpc: fix typo 'CONFIG_PMAC'
  powerpc: fix typo 'CONFIG_PPC_CPU'
  powerpc/powernv: Don't escalate non-existing frozen PE
  powerpc/eeh: Report frozen parent PE prior to child PE
  powerpc/eeh: Clear frozen state for child PE
  powerpc/powernv: Reduce panic timeout from 180s to 10s
  powerpc/xmon: avoid format string leaking to printk
  selftests/powerpc: Add tests of PMU EBBs
  selftests/powerpc: Add support for skipping tests
  selftests/powerpc: Put the test in a separate process group
  selftests/powerpc: Fix instruction loop for ABIv2 (LE)
  ...
2014-06-12 20:11:38 -07:00
Linus Torvalds f9da455b93 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller:

 1) Seccomp BPF filters can now be JIT'd, from Alexei Starovoitov.

 2) Multiqueue support in xen-netback and xen-netfront, from Andrew J
    Benniston.

 3) Allow tweaking of aggregation settings in cdc_ncm driver, from Bjørn
    Mork.

 4) BPF now has a "random" opcode, from Chema Gonzalez.

 5) Add more BPF documentation and improve test framework, from Daniel
    Borkmann.

 6) Support TCP fastopen over ipv6, from Daniel Lee.

 7) Add software TSO helper functions and use them to support software
    TSO in mvneta and mv643xx_eth drivers.  From Ezequiel Garcia.

 8) Support software TSO in fec driver too, from Nimrod Andy.

 9) Add Broadcom SYSTEMPORT driver, from Florian Fainelli.

10) Handle broadcasts more gracefully over macvlan when there are large
    numbers of interfaces configured, from Herbert Xu.

11) Allow more control over fwmark used for non-socket based responses,
    from Lorenzo Colitti.

12) Do TCP congestion window limiting based upon measurements, from Neal
    Cardwell.

13) Support busy polling in SCTP, from Neal Horman.

14) Allow RSS key to be configured via ethtool, from Venkata Duvvuru.

15) Bridge promisc mode handling improvements from Vlad Yasevich.

16) Don't use inetpeer entries to implement ID generation any more, it
    performs poorly, from Eric Dumazet.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1522 commits)
  rtnetlink: fix userspace API breakage for iproute2 < v3.9.0
  tcp: fixing TLP's FIN recovery
  net: fec: Add software TSO support
  net: fec: Add Scatter/gather support
  net: fec: Increase buffer descriptor entry number
  net: fec: Factorize feature setting
  net: fec: Enable IP header hardware checksum
  net: fec: Factorize the .xmit transmit function
  bridge: fix compile error when compiling without IPv6 support
  bridge: fix smatch warning / potential null pointer dereference
  via-rhine: fix full-duplex with autoneg disable
  bnx2x: Enlarge the dorq threshold for VFs
  bnx2x: Check for UNDI in uncommon branch
  bnx2x: Fix 1G-baseT link
  bnx2x: Fix link for KR with swapped polarity lane
  sctp: Fix sk_ack_backlog wrap-around problem
  net/core: Add VF link state control policy
  net/fsl: xgmac_mdio is dependent on OF_MDIO
  net/fsl: Make xgmac_mdio read error message useful
  net_sched: drr: warn when qdisc is not work conserving
  ...
2014-06-12 14:27:40 -07:00
Michael Ellerman 3752e453f6 selftests/powerpc: Add tests of PMU EBBs
The Power8 Performance Monitor Unit (PMU) has a new feature called Event
Based Branches (EBB). This commit adds tests of the kernel API for using
EBBs.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-06-11 17:03:58 +10:00
Michael Ellerman 33b4819f3b selftests/powerpc: Add support for skipping tests
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-06-11 17:03:54 +10:00
Michael Ellerman de506f73dd selftests/powerpc: Put the test in a separate process group
Allows us to kill the test and any children it has spawned.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-06-11 17:03:49 +10:00
Michael Ellerman 0a6121cf33 selftests/powerpc: Fix instruction loop for ABIv2 (LE)
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-06-11 17:03:45 +10:00
Sam bobroff 96d0161086 powerpc: Correct DSCR during TM context switch
Correct the DSCR SPR becoming temporarily corrupted if a task is
context switched during a transaction.

The problem occurs while suspending the task and is caused by saving
the DSCR to thread.dscr after it has already been set to the CPU's
default value:

__switch_to() calls __switch_to_tm()
	which calls tm_reclaim_task()
	which calls tm_reclaim_thread()
	which calls tm_reclaim()
		where the DSCR is set to the CPU's default
__switch_to() calls _switch()
		where thread.dscr is set to the DSCR

When the task is resumed, it's transaction will be doomed (as usual)
and the DSCR SPR will be corrupted, although the checkpointed value
will be correct. Therefore the DSCR will be immediately corrected by
the transaction aborting, unless it has been suspended. In that case
the incorrect value can be seen by the task until it resumes the
transaction.

The fix is to treat the DSCR similarly to the TAR and save it early
in __switch_to().

A program exposing the problem is added to the kernel self tests as:
tools/testing/selftests/powerpc/tm/tm-resched-dscr.

Signed-off-by: Sam Bobroff <sam.bobroff@au1.ibm.com>
CC: <stable@vger.kernel.org> [v3.10+]
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-06-11 17:02:56 +10:00
Linus Torvalds c5aec4c76a Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Pull powerpc updates from Ben Herrenschmidt:
 "Here is the bulk of the powerpc changes for this merge window.  It got
  a bit delayed in part because I wasn't paying attention, and in part
  because I discovered I had a core PCI change without a PCI maintainer
  ack in it.  Bjorn eventually agreed it was ok to merge it though we'll
  probably improve it later and I didn't want to rebase to add his ack.

  There is going to be a bit more next week, essentially fixes that I
  still want to sort through and test.

  The biggest item this time is the support to build the ppc64 LE kernel
  with our new v2 ABI.  We previously supported v2 userspace but the
  kernel itself was a tougher nut to crack.  This is now sorted mostly
  thanks to Anton and Rusty.

  We also have a fairly big series from Cedric that add support for
  64-bit LE zImage boot wrapper.  This was made harder by the fact that
  traditionally our zImage wrapper was always 32-bit, but our new LE
  toolchains don't really support 32-bit anymore (it's somewhat there
  but not really "supported") so we didn't want to rely on it.  This
  meant more churn that just endian fixes.

  This brings some more LE bits as well, such as the ability to run in
  LE mode without a hypervisor (ie. under OPAL firmware) by doing the
  right OPAL call to reinitialize the CPU to take HV interrupts in the
  right mode and the usual pile of endian fixes.

  There's another series from Gavin adding EEH improvements (one day we
  *will* have a release with less than 20 EEH patches, I promise!).

  Another highlight is the support for the "Split core" functionality on
  P8 by Michael.  This allows a P8 core to be split into "sub cores" of
  4 threads which allows the subcores to run different guests under KVM
  (the HW still doesn't support a partition per thread).

  And then the usual misc bits and fixes ..."

[ Further delayed by gmail deciding that BenH is a dirty spammer.
  Google knows.  ]

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (155 commits)
  powerpc/powernv: Add missing include to LPC code
  selftests/powerpc: Test the THP bug we fixed in the previous commit
  powerpc/mm: Check paca psize is up to date for huge mappings
  powerpc/powernv: Pass buffer size to OPAL validate flash call
  powerpc/pseries: hcall functions are exported to modules, need _GLOBAL_TOC()
  powerpc: Exported functions __clear_user and copy_page use r2 so need _GLOBAL_TOC()
  powerpc/powernv: Set memory_block_size_bytes to 256MB
  powerpc: Allow ppc_md platform hook to override memory_block_size_bytes
  powerpc/powernv: Fix endian issues in memory error handling code
  powerpc/eeh: Skip eeh sysfs when eeh is disabled
  powerpc: 64bit sendfile is capped at 2GB
  powerpc/powernv: Provide debugfs access to the LPC bus via OPAL
  powerpc/serial: Use saner flags when creating legacy ports
  powerpc: Add cpu family documentation
  powerpc/xmon: Fix up xmon format strings
  powerpc/powernv: Add calls to support little endian host
  powerpc: Document sysfs DSCR interface
  powerpc: Fix regression of per-CPU DSCR setting
  powerpc: Split __SYSFS_SPRSETUP macro
  arch: powerpc/fadump: Cleaning up inconsistent NULL checks
  ...
2014-06-10 18:54:22 -07:00
Kees Cook 24fe831c17 tools/testing/selftests/sysctl: validate sysctl_writes_strict
This adds several behavioral tests to sysctl string and number writing
to detect unexpected cases that behaved differently when the sysctl
kernel.sysctl_writes_strict != 1.

[ original ]
    root@localhost:~# make test_num
    == Testing sysctl behavior against /proc/sys/kernel/domainname ==
    Writing test file ... ok
    Checking sysctl is not set to test value ... ok
    Writing sysctl from shell ... ok
    Resetting sysctl to original value ... ok
    Writing entire sysctl in single write ... ok
    Writing middle of sysctl after synchronized seek ... FAIL
    Writing beyond end of sysctl ... FAIL
    Writing sysctl with multiple long writes ... FAIL
    Writing entire sysctl in short writes ... FAIL
    Writing middle of sysctl after unsynchronized seek ... ok
    Checking sysctl maxlen is at least 65 ... ok
    Checking sysctl keeps original string on overflow append ... FAIL
    Checking sysctl stays NULL terminated on write ... ok
    Checking sysctl stays NULL terminated on overwrite ... ok
    make: *** [test_num] Error 1
    root@localhost:~# make test_string
    == Testing sysctl behavior against /proc/sys/vm/swappiness ==
    Writing test file ... ok
    Checking sysctl is not set to test value ... ok
    Writing sysctl from shell ... ok
    Resetting sysctl to original value ... ok
    Writing entire sysctl in single write ... ok
    Writing middle of sysctl after synchronized seek ... FAIL
    Writing beyond end of sysctl ... FAIL
    Writing sysctl with multiple long writes ... ok
    make: *** [test_string] Error 1

[ with CONFIG_PROC_SYSCTL_STRICT_WRITES ]
    root@localhost:~# make run_tests
    == Testing sysctl behavior against /proc/sys/kernel/domainname ==
    Writing test file ... ok
    Checking sysctl is not set to test value ... ok
    Writing sysctl from shell ... ok
    Resetting sysctl to original value ... ok
    Writing entire sysctl in single write ... ok
    Writing middle of sysctl after synchronized seek ... ok
    Writing beyond end of sysctl ... ok
    Writing sysctl with multiple long writes ... ok
    Writing entire sysctl in short writes ... ok
    Writing middle of sysctl after unsynchronized seek ... ok
    Checking sysctl maxlen is at least 65 ... ok
    Checking sysctl keeps original string on overflow append ... ok
    Checking sysctl stays NULL terminated on write ... ok
    Checking sysctl stays NULL terminated on overwrite ... ok
    == Testing sysctl behavior against /proc/sys/vm/swappiness ==
    Writing test file ... ok
    Checking sysctl is not set to test value ... ok
    Writing sysctl from shell ... ok
    Resetting sysctl to original value ... ok
    Writing entire sysctl in single write ... ok
    Writing middle of sysctl after synchronized seek ... ok
    Writing beyond end of sysctl ... ok
    Writing sysctl with multiple long writes ... ok

Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-06 16:08:13 -07:00
Michael Ellerman d34b661b10 selftests/powerpc: Test the THP bug we fixed in the previous commit
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-06-06 13:55:04 +10:00
Paul E. McKenney 8be7f505f9 rcutorture: Note diffs from git commits
The current scripting only keeps track of the git SHA-1 of the current
HEAD.  This can cause confusion in cases where testing ran in a git
tree where changes had not yet been checked in.  This commit therefore
also records the output of "git diff HEAD" to provide the information
needed to reconstruct the source tree that was tested.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2014-05-14 09:46:25 -07:00
Paul E. McKenney e8d07a4ebc rcutorture: Test RCU-sched primitives in TREE_PREEMPT_RCU kernels
This commit ensures that RCU-sched primitives are tested in
TREE_PREEMPT_RCU kernels, a combination that was previously omitted.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2014-05-14 09:46:20 -07:00
Paul E. McKenney 0bca7c33ba torture: Use elapsed time to detect hangs
The kvm-test-1-run.sh currently counts "sleep 1" commands to detect
hangs.  This can fail spectacularly on busy systems, where "sleep 1"
might take far longer than one second to complete.  This commit
therefore changes hang detection to use elapsed time measurements.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2014-05-14 09:46:18 -07:00
Paul E. McKenney 9eb97fe703 torture: Better summary diagnostics for build failures
The reaction of kvm-recheck.sh is obscure at best, and easy to miss
completely.  This commit therefore prints "BUG: Build failed" in the
summary at the end of a run.  This commit also adds the line of dashes
in cases where performance info is not available, and also avoids
printing nonsense diagnostics in cases where some of the normal test
output is not available.  In addition, this commit saves off the .config
file even when the build fails.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2014-05-14 09:46:15 -07:00
Paul E. McKenney 499c632dce torture: Add tracing-enabled variant of TREE02
This commit adds a CONFIG_RCU_TRACE=y version of TREE02 for debugging
purposes.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2014-05-14 09:46:06 -07:00
Paul E. McKenney f189cc8c94 torture: Choose bzImage location based on architecture
Currently, the scripts hard-code arch/x86/boot/bzImage, which does not
work well for other architectures.  This commit therefore provides a
identify_boot_image function that selects the correct bzImage location
relative to the top of the Linux source tree.  This commit also adds a
--bootimage argument that allows selecting some other file, for example,
"vmlinux".

This change requires that the definition of the QEMU variable be
computed earlier in order to identify where to look for the boot image
when it comes time to copy it to the results directory.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2014-05-14 09:46:04 -07:00
Paul E. McKenney 0618873116 torture: Permit multi-word qemu and boot arguments
This commit applies quotes to permit multi-word --qemu-args and
--bootargs arguments.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2014-05-14 09:46:03 -07:00
Paul E. McKenney fff35c4e9f torture: Report diagnostics from qemu
The current script does record qemu diagnostics, but the user has to
know where to look for them.  This commit therefore puts them into the
Warnings file so that kvm-recheck.sh will display them.  This change is
especially useful if you are in the habit of killing the qemu process
when you realize that you messed something up, but then later on wonder
why the process terminated early.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2014-05-14 09:46:00 -07:00
Paul E. McKenney 14d9d84c9e torture: Make "--dryrun script" use same environment as normal run
In a normal torture-test run, the script inherits its environment
variables, but this does not work when producing a script that is
to run later.  Therefore, definitions and exports are prepended to
a dryrun script but not to a script that is run immediately.  This
commit reconciles this by placing definitions and exports at the
beginning of the script in both cases.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>

Conflicts:
	tools/testing/selftests/rcutorture/bin/kvm.sh
2014-05-14 09:45:56 -07:00
Paul E. McKenney 1f5d09205f torture: Make "--dryrun script" output self-sufficient
The scripts produced by kvm.sh's "--dryrun script" argument were intended
for debugging rather than to run, but it is easier to debug if the script
output matches exactly what is run.  This commit therefore makes this
script runnable.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2014-05-14 09:45:55 -07:00
Paul E. McKenney 97dc0afed1 torture: Make config-fragment filtering RCU-independent
The torture tests need to set specific values for their respective
Kconfig options (e.g., CONFIG_LOCK_TORTURE_TEST), and must therefore
filter any conflicting definitions from the Kconfig fragment
file.  Unfortunately, the code in kvm-build.sh was looking only for
CONFIG_RCU_TORTURE_TEST.  This commit therefore handles the general case
of CONFIG_[A-Z]*_TORTURE_TEST.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2014-05-14 09:45:52 -07:00
Paul E. McKenney 250da31e06 torture: Rename RCU_QEMU_CMD to TORTURE_QEMU_CMD
This commit makes the torture scripts a bit more RCU-independent.
It also removes a redundant export of this same shell variable.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2014-05-14 09:45:51 -07:00
Paul E. McKenney d1b1e5170c torture: Rename RCU_QEMU_ARG to TORTURE_QEMU_ARG
This commit makes the torture scripts a bit more RCU-independent.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2014-05-14 09:45:49 -07:00
Paul E. McKenney 58f724f741 torture: Rename RCU_QEMU_MAC to TORTURE_QEMU_MAC
This commit makes the torture scripts a bit more RCU-independent.
It also drops an redundant "export" statement.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2014-05-14 09:45:48 -07:00
Paul E. McKenney a0edd47ca4 torture: Rename RCU_QEMU_INTERACTIVE to TORTURE_QEMU_INTERACTIVE
This commit makes the torture scripts a bit more RCU-independent.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2014-05-14 09:45:46 -07:00
Paul E. McKenney 805ffee232 torture: Rename RCU_BUILDONLY to TORTURE_BUILDONLY
This commit makes the torture scripts a bit more RCU-independent by
changing RCU_BUILDONLY to TORTURE_BUILDONLY.  It also removes an
unnecessary export command.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2014-05-14 09:45:45 -07:00
Paul E. McKenney 98bc8cc871 torture: Rename RCU_BOOTARGS to TORTURE_BOOTARGS
This commit makes the torture scripts a bit more RCU-independent.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2014-05-14 09:45:44 -07:00
Paul E. McKenney 58d280bd70 torture: Rename RCU_KMAKE_ARG to TORTURE_KMAKE_ARG
This commit makes the torture scripts a bit more RCU-independent by
changing RCU_KMAKE_ARG to TORTURE_KMAKE_ARG.  It also removes the
unnecessary export command.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2014-05-14 09:45:42 -07:00