linux-stable.git/tools/testing/selftests/vm/run_vmtests, branch linux-4.4.y

Merge tag 'linux-kselftest-4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

2015-11-11T04:46:45+00:00

Pull kselftest updates from Shuah Khan:
 "This 12 patch update for 4.4-rc1 consists of a new pstore test and
  fixes to existing tests"

* tag 'linux-kselftest-4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests: breakpoint: Actually build it
  selftests: vm: Try harder to allocate huge pages
  selftests: Make scripts executable
  selftests: kprobe: Choose an always-defined function to probe
  selftests: memfd: Stop unnecessary rebuilds
  selftests: Add missing #include directives
  selftests/seccomp: Be more precise with syscall arguments.
  selftests/seccomp: build and pass on arm64
  selftests: memfd_test: Revised STACK_SIZE to make it 16-byte aligned
  selftests/pstore: add pstore test scripts going with reboot
  selftests/pstore: add pstore test script for pre-reboot
  selftests: add .gitignore for efivarfs

selftests: vm: add tests for lock on fault

2015-11-06T03:34:48+00:00

Test the mmap() flag, and the mlockall() flag.  These tests ensure that
pages are not faulted in until they are accessed, that the pages are
unevictable once faulted in, and that VMA splitting and merging works with
the new VM flag.  The second test ensures that mlock limits are respected.
 Note that the limit test needs to be run a normal user.

Also add tests to use the new mlock2 family of system calls.

[treding@nvidia.com: : Fix mlock2-tests for 32-bit architectures]
[treding@nvidia.com: ensure the mlock2 syscall number can be found]
[treding@nvidia.com: use the right arguments for main()]
Signed-off-by: Eric B Munson 
Cc: Shuah Khan 
Cc: Michal Hocko 
Cc: Vlastimil Babka 
Cc: Jonathan Corbet 
Cc: Catalin Marinas 
Cc: Geert Uytterhoeven 
Cc: Guenter Roeck 
Cc: Heiko Carstens 
Cc: Kirill A. Shutemov 
Cc: Michael Kerrisk 
Cc: Ralf Baechle 
Cc: Stephen Rothwell 
Signed-off-by: Thierry Reding 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

selftests: vm: Try harder to allocate huge pages

2015-11-03T23:55:02+00:00

If we need to increase the number of huge pages, drop caches first
to reduce fragmentation and then check that we actually allocated
as many as we wanted.  Retry once if that doesn't work.

Signed-off-by: Ben Hutchings 
Signed-off-by: Shuah Khan

selftests:vm: point to libhugetlbfs for regression testing

2015-09-08T22:35:28+00:00

The hugetlb selftests provide minimal coverage.  Have run script point
people at libhugetlbfs for better regression testing.

Signed-off-by: Mike Kravetz 
Acked-by: Naoya Horiguchi 
Cc: Joern Engel 
Cc: Davidlohr Bueso 
Cc: David Rientjes 
Cc: Shuah Khan 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Revert "selftests: add hugetlbfstest"

2015-09-08T22:35:28+00:00

This manually reverts 7e50533d4b842 ("selftests: add hugetlbfstest").

The hugetlbfstest test depends on hugetlb pages being counted in a
task's rss.  This functionality is not in the kernel, so the test will
always fail.  Remove test to avoid confusion.

Signed-off-by: Mike Kravetz 
Acked-by: Naoya Horiguchi 
Cc: Joern Engel 
Cc: Davidlohr Bueso 
Cc: David Rientjes 
Cc: Shuah Khan 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

userfaultfd: selftest

2015-09-04T23:54:41+00:00

This test allocates two virtual areas and bounces the physical memory
across the two virtual areas using only userfaultfd.

Signed-off-by: Andrea Arcangeli 
Cc: Pavel Emelyanov 
Cc: Dave Hansen 
Cc: Linus Torvalds 
Cc: Shuah Khan 
Cc: Shuah Khan 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Test compaction of mlocked memory

2015-05-26T21:58:06+00:00

Commit commit 5bbe3547aa3b ("mm: allow compaction of unevictable pages")
introduced a sysctl that allows userspace to enable scanning of locked
pages for compaction.  This patch introduces a new test which fragments
main memory and attempts to allocate a number of huge pages to exercise
this compaction logic.

Tested on machines with up to 32 GB RAM. With the patch a much larger
number of huge pages can be allocated than on the kernel without the
patch.

Example output:
On a machine with 16 GB RAM:
sudo make run_tests vm
...
-----------------------
running compaction_test
-----------------------
No of huge pages allocated = 3834
[PASS]
...

Signed-off-by: Sri Jayaramappa 
Cc: linux-kernel@vger.kernel.org
Cc: linux-api@vger.kernel.org
Cc: Andrew Morton 
Cc: Eric B Munson 
Reviewed-by: Eric B Munson 
Acked-by: Andrew Morton 
Signed-off-by: Shuah Khan

selftests: Introduce minimal shared logic for running tests

2015-03-13T21:13:40+00:00

This adds a Make include file which most selftests can then include to
get the run_tests logic.

On its own this has the advantage of some reduction in repetition, and
also means the pass/fail message is defined in fewer places.

However the key advantage is it will allow us to implement install very
simply in a subsequent patch.

The default implementation just executes each program in $(TEST_PROGS).

We use a variable to hold the default implementation of $(RUN_TESTS)
because that gives us a clean way to override it if necessary, ie. using
override. The mount, memory-hotplug and mqueue tests use that to provide
a different implementation.

Tests are not run via /bin/bash, so if they are scripts they must be
executable, we add a+x to several.

Signed-off-by: Michael Ellerman 
Signed-off-by: Shuah Khan

selftests: add hugetlbfstest

2013-07-03T23:08:07+00:00

As the confusing naming indicates, this test has some overlap with
pre-existing tests.  Would be nice to merge them eventually.  But since it
is only test code, cleanliness is much less important than mere existence.

Signed-off-by: Joern Engel 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

selftests: exit 1 on failure

2013-07-03T23:08:07+00:00

In case this ever gets scripted, it should return 0 on success and 1 on
failure.  Parsing the output should be left to meatbags.

Signed-off-by: Joern Engel 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds