linux.git/tools/testing/selftests/powerpc/tm, branch v4.13

selftests/powerpc: Fix TM resched DSCR test with some compilers

2017-05-19T09:46:34+00:00

The tm-resched-dscr test has started failing sometimes, depending on
what compiler it's built with, eg:

  test: tm_resched_dscr
  Check DSCR TM context switch: tm-resched-dscr: tm-resched-dscr.c:76: test_body: Assertion `rv' failed.
  !! child died by signal 6

When it fails we see that the compiler doesn't initialise rv to 1 before
entering the inline asm block. Although that's counter intuitive, it
is allowed because we tell the compiler that the inline asm will write
to rv (using "=r"), meaning the original value is irrelevant.

Marking it as a read/write parameter would presumably work, but it seems
simpler to fix it by setting the initial value of rv in the inline asm.

Fixes: 96d016108640 ("powerpc: Correct DSCR during TM context switch")
Signed-off-by: Michael Ellerman 
Acked-by: Michael Neuling

selftests/powerpc: Test TM and VMX register state

2017-05-16T03:03:05+00:00

Test that the VMX checkpointed register state is maintained when a VMX
unavailable exception is taken during a transaction.

Thanks to Breno Leitao  and
Gustavo Bueno Romero  for the original test this
is based heavily on.

Signed-off-by: Michael Neuling 
Reviewed-by: Cyril Bur 
[mpe: Add to .gitignore, always build it 64-bit to fix build errors]
Signed-off-by: Michael Ellerman

selftests/powerpc: Fix remaining fallout from recent changes

2017-02-14T15:02:27+00:00

In benchmarks we need to use $(TEST_GEN_PROGS) after we include lib.mk,
because lib.mk does the substitution to add $(OUTPUT).

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

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

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

Fixes: a8ba798bc8ec ("selftests: enable O and KBUILD_OUTPUT")
Signed-off-by: Michael Ellerman 
Signed-off-by: Shuah Khan

selftests: enable O and KBUILD_OUTPUT

2017-01-05T20:42:22+00:00

Enable O and KBUILD_OUTPUT for kselftest. User could compile kselftest
to another directory by passing O or KBUILD_OUTPUT. And O is high
priority than KBUILD_OUTPUT.

Signed-off-by: Bamvor Jian Zhang 
Signed-off-by: Shuah Khan

selftests: remove duplicated all and clean target

2017-01-05T20:41:35+00:00

Currently, kselftest use TEST_PROGS, TEST_PROGS_EXTENDED, TEST_FILES to
indicate the test program, extended test program and test files. It is
easy to understand the purpose of these files. But mix of compiled and
uncompiled files lead to duplicated "all" and "clean" targets.

In order to remove the duplicated targets, introduce TEST_GEN_PROGS,
TEST_GEN_PROGS_EXTENDED, TEST_GEN_FILES to indicate the compiled
objects.

Also, the later patch will make use of TEST_GEN_XXX to redirect these
files to output directory indicated by KBUILD_OUTPUT or O.

And add this changes to "Contributing new tests(details)" of
Documentation/kselftest.txt.

Signed-off-by: Bamvor Jian Zhang 
Signed-off-by: Shuah Khan

selftests/powerpc: Move shared headers into new include dir

2016-11-17T06:11:47+00:00

There are some functions, especially register related, which can
be shared across multiple selftests/powerpc test directories.

This patch creates a new include directory to store those shared
files, so that the file layout becomes more neat.

Signed-off-by: Simon Guo 
[mpe: Reworked to move the headers only]
Signed-off-by: Michael Ellerman

selftests/powerpc: Add missing binaries to .gitignores

2016-10-06T11:26:40+00:00

Some of the recent new selftests were missing additions to .gitignore,
add them now.

Signed-off-by: Michael Ellerman

selftests/powerpc: Add checks for transactional VSXs in signal contexts

2016-10-04T09:33:15+00:00

If a thread receives a signal while transactional the kernel creates a
second context to show the transactional state of the process. This
test loads some known values and waits for a signal and confirms that
the expected values are in the signal context.

Signed-off-by: Cyril Bur 
Signed-off-by: Michael Ellerman

selftests/powerpc: Add checks for transactional VMXs in signal contexts

2016-10-04T09:33:14+00:00

If a thread receives a signal while transactional the kernel creates a
second context to show the transactional state of the process. This
test loads some known values and waits for a signal and confirms that
the expected values are in the signal context.

Signed-off-by: Cyril Bur 
Signed-off-by: Michael Ellerman

selftests/powerpc: Add checks for transactional FPUs in signal contexts

2016-10-04T09:33:14+00:00

If a thread receives a signal while transactional the kernel creates a
second context to show the transactional state of the process. This
test loads some known values and waits for a signal and confirms that
the expected values are in the signal context.

Signed-off-by: Cyril Bur 
Signed-off-by: Michael Ellerman