litmus-rt.git/tools/testing/selftests/powerpc, branch master

selftests/powerpc: Fix the pmu install rule

2015-05-01T03:00:26+00:00

My patch to add install support for the powerpc selftests had a typo,
leading to the three tests in the pmu directory itself not being
installed.

Fixes: 6faeeea44b84 ("selftests: Add install support for the powerpc tests")
Signed-off-by: Michael Ellerman

Revert "powerpc/tm: Abort syscalls in active transactions"

2015-04-30T05:24:58+00:00

This reverts commit feba40362b11341bee6d8ed58d54b896abbd9f84.

Although the principle of this change is good, the implementation has a
few issues.

Firstly we can sometimes fail to abort a syscall because r12 may have
been clobbered by C code if we went down the virtual CPU accounting
path, or if syscall tracing was enabled.

Secondly we have decided that it is safer to abort the syscall even
earlier in the syscall entry path, so that we avoid the syscall tracing
path when we are transactional.

So that we have time to thoroughly test those changes we have decided to
revert this for this merge window and will merge the fixed version in
the next window.

NB. Rather than reverting the selftest we just drop tm-syscall from
TEST_PROGS so that it's not run by default.

Fixes: feba40362b11 ("powerpc/tm: Abort syscalls in active transactions")
Signed-off-by: Michael Ellerman

Merge tag 'powerpc-4.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux

2015-04-16T18:53:32+00:00

Pull powerpc updates from Michael Ellerman:

- Numerous minor fixes, cleanups etc.

- More EEH work from Gavin to remove its dependency on device_nodes.

- Memory hotplug implemented entirely in the kernel from Nathan
Fontenot.

- Removal of redundant CONFIG_PPC_OF by Kevin Hao.

- Rewrite of VPHN parsing logic & tests from Greg Kurz.

- A fix from Nish Aravamudan to reduce memory usage by clamping
nodes_possible_map.

- Support for pstore on powernv from Hari Bathini.

- Removal of old powerpc specific byte swap routines by David Gibson.

- Fix from Vasant Hegde to prevent the flash driver telling you it was
flashing your firmware when it wasn't.

- Patch from Ben Herrenschmidt to add an OPAL heartbeat driver.

- Fix for an oops causing get/put_cpu_var() imbalance in perf by Jan
Stancek.

- Some fixes for migration from Tyrel Datwyler.

- A new syscall to switch the cpu endian by Michael Ellerman.

- Large series from Wei Yang to implement SRIOV, reviewed and acked by
Bjorn.

- A fix for the OPAL sensor driver from Cédric Le Goater.

- Fixes to get STRICT_MM_TYPECHECKS building again by Michael Ellerman.

- Large series from Daniel Axtens to make our PCI hooks per PHB rather
than per machine.

- Small patch from Sam Bobroff to explicitly abort non-suspended
transactions on syscalls, plus a test to exercise it.

- Numerous reworks and fixes for the 24x7 PMU from Sukadev Bhattiprolu.

- Small patch to enable the hard lockup detector from Anton Blanchard.

- Fix from Dave Olson for missing L2 cache information on some CPUs.

- Some fixes from Michael Ellerman to get Cell machines booting again.

- Freescale updates from Scott: Highlights include BMan device tree
nodes, an MSI erratum workaround, a couple minor performance
improvements, config updates, and misc fixes/cleanup.

* tag 'powerpc-4.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux: (196 commits)
powerpc/powermac: Fix build error seen with powermac smp builds
powerpc/pseries: Fix compile of memory hotplug without CONFIG_MEMORY_HOTREMOVE
powerpc: Remove PPC32 code from pseries specific find_and_init_phbs()
powerpc/cell: Fix iommu breakage caused by controller_ops change
powerpc/eeh: Fix crash in eeh_add_device_early() on Cell
powerpc/perf: Cap 64bit userspace backtraces to PERF_MAX_STACK_DEPTH
powerpc/perf/hv-24x7: Fail 24x7 initcall if create_events_from_catalog() fails
powerpc/pseries: Correct memory hotplug locking
powerpc: Fix missing L2 cache size in /sys/devices/system/cpu
powerpc: Add ppc64 hard lockup detector support
oprofile: Disable oprofile NMI timer on ppc64
powerpc/perf/hv-24x7: Add missing put_cpu_var()
powerpc/perf/hv-24x7: Break up single_24x7_request
powerpc/perf/hv-24x7: Define update_event_count()
powerpc/perf/hv-24x7: Whitespace cleanup
powerpc/perf/hv-24x7: Define add_event_to_24x7_request()
powerpc/perf/hv-24x7: Rename hv_24x7_event_update
powerpc/perf/hv-24x7: Move debug prints to separate function
powerpc/perf/hv-24x7: Drop event_24x7_request()
powerpc/perf/hv-24x7: Use pr_devel() to log message
...

Conflicts:
tools/testing/selftests/powerpc/Makefile
tools/testing/selftests/powerpc/tm/Makefile

mm, selftests: test return value of munmap for MAP_HUGETLB memory

2015-04-15T23:35:19+00:00

When MAP_HUGETLB memory is unmapped, the length must be hugepage aligned,
otherwise it fails with -EINVAL.

All tests currently behave correctly, but it's better to explcitly test
the return value for completeness and document the requirement, especially
if users copy map_hugetlb.c as a sample implementation.

Signed-off-by: David Rientjes 
Cc: Jonathan Corbet 
Cc: Davide Libenzi 
Cc: Luiz Capitulino 
Cc: Shuah Khan 
Cc: Hugh Dickins 
Cc: Andrea Arcangeli 
Cc: Joern Engel 
Cc: Jianguo Wu 
Cc: Eric B Munson 
Acked-by: Michael Ellerman 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

selftests/powerpc: Add transactional syscall test

2015-04-11T10:49:20+00:00

Check that a syscall made during an active transaction will fail with
the correct failure code and that one made during a suspended
transaction will succeed.

Signed-off-by: Sam Bobroff 
Signed-off-by: Michael Ellerman

selftests/powerpc: Move get_auxv_entry() to harness.c

2015-04-11T10:49:20+00:00

Move get_auxv_entry() from pmu/lib.c up to harness.c in order to make
it available to other tests.

Signed-off-by: Sam Bobroff 
Signed-off-by: Michael Ellerman

selftests/powerpc: Add a test of the switch_endian() syscall

2015-03-28T11:08:47+00:00

This adds a test of the switch_endian() syscall we added in the previous
commit.

We test it by calling the endian switch syscall, and then executing some
code in the other endian to check everything went as expected. That code
checks registers we expect to be maintained are. If the endian switch
failed to happen that code sequence will be illegal and cause the test
to abort.

We then switch back to the original endian, do the same checks and
finally write a success message and exit(0).

Signed-off-by: Michael Ellerman

selftests: Set CC using CROSS_COMPILE once in lib.mk

2015-03-19T21:16:51+00:00

This avoids repeating the logic in every Makefile. We mimic the
top-level Makefile and use $(CROSS_COMPILE)gcc.

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

selftests: Add install support for the powerpc tests

2015-03-19T18:38:51+00:00

The bulk of the selftests are actually below the powerpc sub directory.

This adds support for installing them, when on a powerpc machine, or if
ARCH and CROSS_COMPILE are set appropriately.

This is a little more complicated because of the sub directory structure
under powerpc, but much of the common logic in lib.mk is still used. The
net effect of the patch is still a reduction in code.

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

selftests/powerpc: Rename TARGETS in powerpc selftests makefile

2015-03-18T01:02:41+00:00

This patch changes the name of the make variable TARGETS, to prevent it
from colliding with a value set by the user on the command line (as they
are recommended to do by tools/testing/selftests/README.txt).

Without this patch, "make -C tools/testing/selftests TARGETS=powerpc"
will fail.

Signed-off-by: Sam Bobroff 
Signed-off-by: Michael Ellerman