linux-stable.git/tools/testing/selftests/vm/run_vmtests, branch linux-4.3.y

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

tools/testing: fix comment / output typos

2012-09-01T15:48:19+00:00

Correct spelling typo in tools/testing

Signed-off-by: Masanari Iida 
Signed-off-by: Jiri Kosina

mm: move hugepage test examples to tools/testing/selftests/vm

2012-03-29T00:14:37+00:00

hugepage-mmap.c, hugepage-shm.c and map_hugetlb.c in Documentation/vm are
simple pass/fail tests, It's better to promote them to
tools/testing/selftests.

Thanks suggestion of Andrew Morton about this.  They all need firstly
setting up proper nr_hugepages and hugepage-mmap need to mount hugetlbfs.
So I add a shell script run_vmtests to do such work which will call the
three test programs and check the return value of them.

Changes to original code including below:
a. add run_vmtests script
b. return error when read_bytes mismatch with writed bytes.
c. coding style fixes: do not use assignment in if condition

[akpm@linux-foundation.org: build the targets before trying to execute them]
[akpm@linux-foundation.org: Documentation/vm/ no longer has a Makefile. Fixes "make clean"]
Signed-off-by: Dave Young 
Cc: Wu Fengguang 
Cc: Christoph Lameter 
Cc: Pekka Enberg 
Cc: Frederic Weisbecker 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds