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The sproadic_*() macros have become unwieldy. This patch
replaces those convenience macros for global, clustered,
and partitioned scheduling. A part of this API change
is the explicit use of nanosecond time-values. Prior APIs
have used lt_t (litmus time), which had an implied time
scale of nanoseconds.
/bin apps and test suite also updated to use revised API.
Modifications to the test suite are mostly centered around
using nanoseconds instead of milliseconds.
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This adds the uncache test tool (bin/uncache.c). The tool
can be used to test Litmus's char device driver for allocating
uncacheable CPU memory. The tool runs various checks and
gathers basic cache vs. main memory statistics.
In the future, uncache could be extended to quantify the
benefits of the L1, L2, and L3 caches, instead of treating
them as a black box.
Note: Uncache works best when compiled with '-O2'. While '-O2'
has not been added to the Makefile, other code was updated (code
in tests/ and rtspin), to compile with -O2.
DEPENDS UPON LITMUS-RT PATCH 888d097deb6d1fdc0c89a4f9667fd81cf416cfc7.
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The new generic lock layer in LITMUS^RT does away with per-protocol
system calls. Change accordingly.
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This is the beginning of the LITMUS^RT testsuite.
The main design goals are flexibility and ease of test writing.
To create a new test, simply write a test case in any C file in the
tests/ subdirectory. The buildsystem will find the test and hook it
up with the testrunner.
Have a look at tests/fdso.c and include/tests.h to get an idea for what
tests look like.
Tests can be executed with the 'runtests' tool. Each testcase is executed
in a separate process in order to ensure that tests do not influence
each other.
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