Commit graph

388 commits

Author SHA1 Message Date
Carlo Caione
868264b8b4 tests: benchmarks: Add ARM64 case
To be able to pass the unit test we need to add a set of defines for the
ARM64 architecture. Fix this.

Signed-off-by: Carlo Caione <ccaione@baylibre.com>
2020-02-01 08:08:43 -05:00
Hake Huang
f1d515fa60 test: benchmarkis add frdmk82f board config
add board config file for latency_measure

Signed-off-by: Hake Huang <hake.huang@nxp.com>
2019-12-19 12:55:18 -05:00
Andrew Boie
33c3e4a4de tests: timing_info: use only 1 cpu for userspace
The regular version of this test has CONFIG_MP_NUM_CPUS=1,
but this was omitted in the userspace version, and I am
seeing crashes on an SMP-enabled target that supports
user mode.

Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
2019-12-18 11:17:33 -08:00
Alberto Escolar Piedras
0b8678a2b0 samples & tests: Correct main() type
The application main() in Zephyr is defined as having a prototype:
void main(void), as expected by the kernel init (bg_thread_main).

So, correct the different samples and tests that were defined
otherwise.

Signed-off-by: Alberto Escolar Piedras <alpi@oticon.com>
2019-12-16 11:27:56 +01:00
Ulf Magnusson
984bfae831 global: Remove leading/trailing blank lines in files
Remove leading/trailing blank lines in .c, .h, .py, .rst, .yml, and
.yaml files.

Will avoid failures with the new CI test in
https://github.com/zephyrproject-rtos/ci-tools/pull/112, though it only
checks changed files.

Move the 'target-notes' target in boards/xtensa/odroid_go/doc/index.rst
to get rid of the trailing blank line there. It was probably misplaced.

Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
2019-12-11 19:17:27 +01:00
Anas Nashif
70758c4374 tests: fix test identifiers
The seasonal overhaul of test identifiers aligning the terms being used
and creating a structure. This is hopefully the last time we do this,
plan is to document the identifiers and enforce syntax.

The end-goal is to be able to generate a testsuite description from the
existing tests and sync it frequently with the testsuite in Testrail.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2019-12-09 15:53:44 -05:00
Andy Ross
8892406c1d kernel/sys_clock.h: Deprecate and convert uses of old conversions
Mark the old time conversion APIs deprecated, leave compatibility
macros in place, and replace all usage with the new API.

Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
2019-11-08 11:08:58 +01:00
Andrew Boie
4f77c2ad53 kernel: rename z_arch_ to arch_
Promote the private z_arch_* namespace, which specifies
the interface between the core kernel and the
architecture code, to a new top-level namespace named
arch_*.

This allows our documentation generation to create
online documentation for this set of interfaces,
and this set of interfaces is worth treating in a
more formal way anyway.

Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
2019-11-07 15:21:46 -08:00
Stephanos Ioannidis
2d7460482d headers: Refactor kernel and arch headers.
This commit refactors kernel and arch headers to establish a boundary
between private and public interface headers.

The refactoring strategy used in this commit is detailed in the issue

This commit introduces the following major changes:

1. Establish a clear boundary between private and public headers by
  removing "kernel/include" and "arch/*/include" from the global
  include paths. Ideally, only kernel/ and arch/*/ source files should
  reference the headers in these directories. If these headers must be
  used by a component, these include paths shall be manually added to
  the CMakeLists.txt file of the component. This is intended to
  discourage applications from including private kernel and arch
  headers either knowingly and unknowingly.

  - kernel/include/ (PRIVATE)
    This directory contains the private headers that provide private
   kernel definitions which should not be visible outside the kernel
   and arch source code. All public kernel definitions must be added
   to an appropriate header located under include/.

  - arch/*/include/ (PRIVATE)
    This directory contains the private headers that provide private
   architecture-specific definitions which should not be visible
   outside the arch and kernel source code. All public architecture-
   specific definitions must be added to an appropriate header located
   under include/arch/*/.

  - include/ AND include/sys/ (PUBLIC)
    This directory contains the public headers that provide public
   kernel definitions which can be referenced by both kernel and
   application code.

  - include/arch/*/ (PUBLIC)
    This directory contains the public headers that provide public
   architecture-specific definitions which can be referenced by both
   kernel and application code.

2. Split arch_interface.h into "kernel-to-arch interface" and "public
  arch interface" divisions.

  - kernel/include/kernel_arch_interface.h
    * provides private "kernel-to-arch interface" definition.
    * includes arch/*/include/kernel_arch_func.h to ensure that the
     interface function implementations are always available.
    * includes sys/arch_interface.h so that public arch interface
     definitions are automatically included when including this file.

  - arch/*/include/kernel_arch_func.h
    * provides architecture-specific "kernel-to-arch interface"
     implementation.
    * only the functions that will be used in kernel and arch source
     files are defined here.

  - include/sys/arch_interface.h
    * provides "public arch interface" definition.
    * includes include/arch/arch_inlines.h to ensure that the
     architecture-specific public inline interface function
     implementations are always available.

  - include/arch/arch_inlines.h
    * includes architecture-specific arch_inlines.h in
     include/arch/*/arch_inline.h.

  - include/arch/*/arch_inline.h
    * provides architecture-specific "public arch interface" inline
     function implementation.
    * supersedes include/sys/arch_inline.h.

3. Refactor kernel and the existing architecture implementations.

  - Remove circular dependency of kernel and arch headers. The
   following general rules should be observed:

    * Never include any private headers from public headers
    * Never include kernel_internal.h in kernel_arch_data.h
    * Always include kernel_arch_data.h from kernel_arch_func.h
    * Never include kernel.h from kernel_struct.h either directly or
     indirectly. Only add the kernel structures that must be referenced
     from public arch headers in this file.

  - Relocate syscall_handler.h to include/ so it can be used in the
   public code. This is necessary because many user-mode public codes
   reference the functions defined in this header.

  - Relocate kernel_arch_thread.h to include/arch/*/thread.h. This is
   necessary to provide architecture-specific thread definition for
   'struct k_thread' in kernel.h.

  - Remove any private header dependencies from public headers using
   the following methods:

    * If dependency is not required, simply omit
    * If dependency is required,
      - Relocate a portion of the required dependencies from the
       private header to an appropriate public header OR
      - Relocate the required private header to make it public.

This commit supersedes #20047, addresses #19666, and fixes #3056.

Signed-off-by: Stephanos Ioannidis <root@stephanos.io>
2019-11-06 16:07:32 -08:00
Anas Nashif
87591958cf tests: benchmarks: parse output on passing benchmark
Parse output of test to verify success, this was previously treated as a
test and now it is using the console handler, so we need to verify
success using regex.

Fixes: #20177

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2019-11-06 10:54:34 -05:00
Mario Noseda
1acea13767 tests: benchmark: boot_time: fixed kernel clock value
Using a device with a kernel clock below 1MHz (e.g. nRF52) resulted in
a division by zero. Added support for such devices by multiplying
before dividing.

Signed-off-by: Mario Noseda <mario.noseda@zhaw.ch>
2019-11-04 08:51:58 -05:00
Daniel Leung
b7eb04b300 x86: consolidate x86_64 architecture, SoC and boards
There are two set of code supporting x86_64: x86_64 using x32 ABI,
and x86 long mode, and this consolidates both into one x86_64
architecture and SoC supporting truly 64-bit mode.

() Removes the x86_64:x32 architecture and SoC, and replaces
   them with the existing x86 long mode arch and SoC.
() Replace qemu_x86_64 with qemu_x86_long as qemu_x86_64.
() Updates samples and tests to remove reference to
   qemu_x86_long.
() Renames CONFIG_X86_LONGMODE to CONFIG_X86_64.

Signed-off-by: Daniel Leung <daniel.leung@intel.com>
2019-10-25 17:57:55 -04:00
Anas Nashif
1b8d161cb5 benchmarks: capture benchmark data in a file
Record benchmark data in file.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2019-10-11 07:28:19 -07:00
Peter Bigot
e28f330a8e coccinelle: standardize k_thread create/define calls with integer timeouts
Re-run with updated script to convert integer literal delay arguments
to k_thread_create and K_THREAD_DEFINE to use the standard timeout
macros.

Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
2019-10-09 08:38:10 -04:00
Peter Bigot
6e5db350b2 coccinelle: standardize k_sleep calls with integer timeouts
Re-run with updated script to convert integer literal delay arguments to
k_sleep to use the standard timeout macros.

Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
2019-10-09 08:38:10 -04:00
Charles E. Youse
8d97750eef arch/x86: (Intel64) add z_arch_curr_cpu() to enable CONFIG_SMP=y
And set qemu_x86_long board to build with CONFIG_SMP=y by default.
Apparently two benchmark tests - latency_measure and sys_kernel -
do not work with the SMP scheduler, so those tests are disabled.

Signed-off-by: Charles E. Youse <charles.youse@intel.com>
2019-10-07 19:46:55 -04:00
Peter Bigot
ab91eef23b coccinelle: standardize kernel API timeout arguments
Use the int_literal_to_timeout Coccinelle script to convert literal
integer arguments for kernel API timeout parameters to the standard
timeout value representations.

Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
2019-10-03 11:55:44 -07:00
Andrew Boie
e6654103ba kernel: rename boot time globals
These are renamed to z_timestamp_main and z_timestamp_idle,
and now specified in kernel_internal.h.

Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
2019-09-30 15:25:55 -04:00
Andrew Boie
9e1dda8804 timing_info: rename globals
Global variables related to timing information have been
renamed to be prefixed with z_arch, with naming arranged
in increasing order of specificity.

Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
2019-09-30 15:25:55 -04:00
Andy Ross
d1200d2155 tests: Never disable SMP
Disabling SMP mode for certain tests was a one-release thing, done to
avoid having to triage every test independently (MANY are not
SMP-safe), and with the knowledge that it was probably hiding bugs in
the kernel.

Turn it on pervasively.  Tests are treated with a combination of
flagging specific cases as "1cpu" where we have short-running tests
that can be independently run in an otherwise SMP environment, and via
setting CONFIG_MP_NUM_CPUS=1 where that's not possible (which still
runs the full SMP kernel config, but with only one CPU available).

Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
2019-09-26 16:54:06 -04:00
Tom Burdick
45c7783b1e boards: arm: Add support for NXP FRDM-K22F board
This adds support for NXP's Freedom K22 board.

Co-authored-by: Sean Nyekjaer <sean.nyekjaer@prevas.dk>
Co-authored-by: Tom Burdick <thomas.burdick@gmail.com>
Signed-off-by: Tom Burdick <thomas.burdick@gmail.com>
2019-09-25 02:18:38 -07:00
Charles E. Youse
78c9e8f8cc tests/benchmarks/boot_time: disable on inapplicable targets
Minnowboard and ACRN do not use the new APIC timer, so the
benchmark code will not run on them (yet).

Signed-off-by: Charles E. Youse <charles.youse@intel.com>
2019-09-21 16:43:26 -07:00
Charles E. Youse
223ac780d3 tests/benchmarks/boot_time: disable on QEMU targets
These all currently use the HPET timer, and thus can't build with
BOOT_TIME_MEASUREMENT enabled, so disable for now. This test is
basically a build-only test, so we're covered with the other x86
targets (gpmrb, up_squared) for now.

Signed-off-by: Charles E. Youse <charles.youse@intel.com>
2019-09-21 16:43:26 -07:00
Charles E. Youse
3036faf88a tests/benchmarks: fix BOOT_TIME_MEASUREMENT
The boot time measurement sample was giving bogus values on x86: an
assumption was made that the system timer is in sync with the CPU TSC,
which is not the case on most x86 boards.

Boot time measurements are no longer permitted unless the timer source
is the local APIC. To avoid issues of TSC scaling, the startup datum
has been forced to 0, which is in line with the ARM implementation
(which is the only other platform which supports this feature).

Cleanups along the way:

As the datum is now assumed zero, some variables are removed and
calculations simplified. The global variables involved in boot time
measurements are moved to the kernel.h header rather than being
redeclared in every place they are referenced. Since none of the
measurements actually use 64-bit precision, the samples are reduced
to 32-bit quantities.

In addition, this feature has been enabled in long mode.

Fixes: #19144

Signed-off-by: Charles E. Youse <charles.youse@intel.com>
2019-09-21 16:43:26 -07:00
Charles E. Youse
efcecea6aa subsys/debug: eliminate PEFORMANCE_METRICS and CPU_CLOCK_FREQ_MHZ
Neither of these options is actually used; CPU_CLOCK_FREQ_MHZ appears
to have been part of x86 BOOT_TIME_MEASUREMENT at some point, and
PERFORMANCE_METRICS is the stillborn cousin of EXECUTION_BENCHMARKS.

Signed-off-by: Charles E. Youse <charles.youse@intel.com>
2019-09-21 16:43:26 -07:00
Andy Ross
6564974bae userspace: Support for split 64 bit arguments
System call arguments, at the arch layer, are single words.  So
passing wider values requires splitting them into two registers at
call time.  This gets even more complicated for values (e.g
k_timeout_t) that may have different sizes depending on configuration.
This patch adds a feature to gen_syscalls.py to detect functions with
wide arguments and automatically generates code to split/unsplit them.

Unfortunately the current scheme of Z_SYSCALL_DECLARE_* macros won't
work with functions like this, because for N arguments (our current
maximum N is 10) there are 2^N possible configurations of argument
widths.  So this generates the complete functions for each handler and
wrapper, effectively doing in python what was originally done in the
preprocessor.

Another complexity is that traditional the z_hdlr_*() function for a
system call has taken the raw list of word arguments, which does not
work when some of those arguments must be 64 bit types.  So instead of
using a single Z_SYSCALL_HANDLER macro, this splits the job of
z_hdlr_*() into two steps: An automatically-generated unmarshalling
function, z_mrsh_*(), which then calls a user-supplied verification
function z_vrfy_*().  The verification function is typesafe, and is a
simple C function with exactly the same argument and return signature
as the syscall impl function.  It is also not responsible for
validating the pointers to the extra parameter array or a wide return
value, that code gets automatically generated.

This commit includes new vrfy/msrh handling for all syscalls invoked
during CI runs.  Future commits will port the less testable code.

Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
2019-09-12 11:31:50 +08:00
Piotr Zięcik
5f6cae38db tests: benchmarks: Do not use CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC
On some SoCs the frequency of the system clock is obtained at run time
as the exact configuration of the hardware is not known at compile time.
On such platforms using CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC define
directly introduces timing errors.

This commit replaces CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC by the call
to inline function sys_clock_hw_cycles_per_sec() which always returns
correct frequency of the system clock.

Signed-off-by: Piotr Zięcik <piotr.ziecik@nordicsemi.no>
2019-07-24 15:10:02 +02:00
Anas Nashif
a2fd7d70ec cleanup: include/: move misc/util.h to sys/util.h
move misc/util.h to sys/util.h and
create a shim for backward-compatibility.

No functional changes to the headers.
A warning in the shim can be controlled with CONFIG_COMPAT_INCLUDES.

Related to #16539

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2019-06-27 22:55:49 -04:00
Anas Nashif
9ab2a56751 cleanup: include/: move misc/printk.h to sys/printk.h
move misc/printk.h to sys/printk.h and
create a shim for backward-compatibility.

No functional changes to the headers.
A warning in the shim can be controlled with CONFIG_COMPAT_INCLUDES.

Related to #16539

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2019-06-27 22:55:49 -04:00
Anas Nashif
5d001f3e41 cleanup: include/: move misc/byteorder.h to sys/byteorder.h
move misc/byteorder.h to sys/byteorder.h and
create a shim for backward-compatibility.

No functional changes to the headers.
A warning in the shim can be controlled with CONFIG_COMPAT_INCLUDES.

Related to #16539

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2019-06-27 22:55:49 -04:00
Nicolas Pitre
659fa0d57d lifo/fifo: first word is not always first 4 bytes
The first word is used as a pointer, meaning it is 64 bits on 64-bit
systems. To reserve it, it has to be either a pointer, a long, or an
intptr_t. Not an int nor an u32_t.

Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
2019-06-26 09:08:42 -04:00
Anas Nashif
f2cb20c772 docs: fix misspelling across the tree
Found a few annoying typos and figured I better run script and
fix anything it can find, here are the results...

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2019-06-19 15:34:13 -05:00
Ioannis Glaropoulos
ac8e810d94 tests: benchmarks: timing_info: add user space tag
Adding userspace tag for benchmark.timing.userspace test-case.

Signed-off-by: Ioannis Glaropoulos <Ioannis.Glaropoulos@nordicsemi.no>
2019-06-17 09:30:24 -04:00
Nicolas Pitre
3d51f7c266 k_stack: make it 64-bit compatible
The k_stack data type cannot be u32_t on a 64-bit system as it is
often used to store pointers. Let's define a dedicated type for stack
data values, namely stack_data_t, which can be adjusted accordingly.
For now it is defined to uintptr_t which is the integer type large
enough to hold a pointer, meaning it is equivalent to u32_t on 32-bit
systems and u64_t on 64-bit systems.

Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
2019-06-14 05:46:29 -04:00
Nicolas Pitre
6311766d9a pointer-type args: cast appropriately to be 64-bit compatible
Using void pointers as universal arguments is widely used. However, when
compiling a 64-bit target, the compiler doesn't like when an int is
converted to a pointer and vice versa despite the presence of a cast.
This is due to a width mismatch between ints (32 bits) and pointers
(64 bits). The trick is to cast to a widening integer type such as
intptr_t and then cast to
void*.

When appropriate, the INT_TO_POINTER macro is used instead of this
double cast to make things clearer. The converse with POINTER_TO_INT
is also done which also serves as good code annotations.

While at it, remove unneeded casts to specific pointer types from void*
in the vicinity, and move to typed variable upon function entry to make
the code cleaner.

Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
2019-06-12 08:20:52 -07:00
Anas Nashif
2fb19fcbdd style: samples/tests: add braces around if/while statements
Per guidelines, all statements should have braces around them. We do not
have a CI check for this, so a few went in unnoticed.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2019-06-06 15:20:21 +02:00
Henrik Brix Andersen
09749bbeb0 tests: benchmarks: latency_measure: use 0.1s sys clk tick for twr_ke18f
Use a system clock tick of 0.1 sec when running on the NXP TWR-KE18F
development board.

Fixes #16234.

Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
2019-05-31 10:39:26 -05:00
Sebastian Bøe
72177da74b latency_measure: Fix bug where the wrong prj.conf file was used
Fix a bug in the latency_measure sample where, when the board was
specified through the environment, the wrong prj.conf file was
selected.

This change is not a pure refactoring, as it is believed that there
have been some copy-paste mistakes where prj_small_freq_divider.conf
and prj.conf have become out-of-sync over time. These assumed mistakes
are not carried over in the new organization.

Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>
2019-05-30 08:27:47 -04:00
Sebastian Bøe
6db7968c63 latency_measure: Remove commented-out code
Remove commented-out code in the latency_measure sample. Commented out
code should not be committed to version control.

Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>
2019-05-30 08:27:47 -04:00
Paul Sokolovsky
563b89f90b tests: benchmarks: mbedtls: Fix printf args
As printf() is now used directly instead of printf proxy function,
there's warning-as-error that long long is passed where %lu
expected, so cast it explicitly.

Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
2019-05-23 09:27:59 -04:00
Paul Sokolovsky
bf070716d1 tests: mbedtls: Call mbedtls_platform_set_printf() only if needed
It exists only if MBEDTLS_PLATFORM_PRINTF_ALT is defined, whcih we
no longer do, but make the call condiitonal in case we'll need to
make it configurable later.

Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
2019-05-23 09:27:59 -04:00
Ioannis Glaropoulos
9a31f28b80 tests: benchmarks: timing_info: fix start of swap time
In all architectures, except x86, __start_swap_time is directly
updated by function read_timer_start_of_swap(), and it shall not
be registered via __temp_start_swap_time.

Signed-off-by: Ioannis Glaropoulos <Ioannis.Glaropoulos@nordicsemi.no>
2019-05-21 08:29:25 -04:00
Anas Nashif
7f378d6ef8 benchmarks: sched: capture output and evaluate
We were running this as a test and not evluating the output. Now we
verify the output and stop treating this as a ztest item.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2019-04-08 10:46:55 -04:00
Anas Nashif
3ae52624ff license: cleanup: add SPDX Apache-2.0 license identifier
Update the files which contain no license information with the
'Apache-2.0' SPDX license identifier.  Many source files in the tree are
missing licensing information, which makes it harder for compliance
tools to determine the correct license.

By default all files without license information are under the default
license of Zephyr, which is Apache version 2.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2019-04-07 08:45:22 -04:00
Andrew Boie
7b1ee5cf13 tests: CONFIG_TEST_USERSPACE now off by default
Unlike CONFIG_HW_STACK_PROTECTION, which greatly helps
expose stack overflows in test code, activating
userspace without putting threads in user mode is of
very limited value.

Now CONFIG_TEST_USERSPACE is off by default. Any test
which puts threads in user mode will need to set
CONFIG_TEST_USERSPACE.

This should greatly increase sanitycheck build times
as there is non-trivial build time overhead to
enabling this feature. This also allows some tests
which failed the build on RAM-constrained platforms
to compile properly.

tests/drivers/build_all is a special case; it doesn't
put threads in user mode, but we want to ensure all
the syscall handlers compile properly.

Fixes: #15103 (and probably others)

Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
2019-04-06 14:30:42 -04:00
Adithya Baglody
b33dd7ebde tests: benchmark: timing_info: Fixed incorrect results.
The results were incorrect because the timer was firing the
interrupts before the measurement was made.

Fixes: GH-14556

Signed-off-by: Adithya Baglody <adithya.nagaraj.baglody@intel.com>
2019-04-05 16:10:27 -04:00
Anas Nashif
3b58681426 tests: fix identifier for scheduler benchmark
Prefix identifier with benchmarks.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2019-03-29 17:44:11 -04:00
Anas Nashif
8f474020b6 samples: move mbedtls benchmark under benchmarks
This should be alongside other benchmarks under tests/benchmarks

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2019-03-29 17:44:11 -04:00
Patrik Flykt
21358baa72 all: Update unsigend 'U' suffix due to multiplication
As the multiplication rule is updated, new unsigned suffixes
are added in the code.

Signed-off-by: Patrik Flykt <patrik.flykt@intel.com>
2019-03-28 17:15:58 -05:00
Patrik Flykt
24d71431e9 all: Add 'U' suffix when using unsigned variables
Add a 'U' suffix to values when computing and comparing against
unsigned variables.

Signed-off-by: Patrik Flykt <patrik.flykt@intel.com>
2019-03-28 17:15:58 -05:00