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60b18711f3
Many test configs are the same, remove complexity and duplication by using just one kernel config where applicable. This removes the usage of ARCH which is a remnant from the days where we had to specify the architecture of the board, the architecture is now part of Kconfig and determined basded on the board configuration. This will also make it easy adding new architectures to test cases without having to add an architecture specific config file when it is actually not needed, for example now that we will enable micro-kernel support on ARC. Jira: ZEP-238 Change-Id: I143fa3c4629c58329cfeb0c761c7a896fc1ef63a Signed-off-by: Anas Nashif <anas.nashif@intel.com> |
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| .. | ||
| src | ||
| Makefile | ||
| prj_arm.conf | ||
| prj_x86.conf | ||
| prj.mdef | ||
| README.txt | ||
| testcase.ini | ||
Title: Tickless Idle Support
Description:
This test verifies the timing accuracy of the tickless idle feature.
The test first calibrates itself by repeatedly sleeping for 10 ticks with the
tickless idle feature disabled. It then repeats this process with the tickless
idle feature enabled. Lastly, it compares the average measured duration of
each approach and displays the result. The tick timing is correct if the
'diff ticks' with tickless enabled matches the SLEEP_TICKS (10) setting in
the source.
The demonstration utilizes microkernel mutex APIs, timers and tickless
idle mode.
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Building and Running Project:
This microkernel project outputs to the console. It can be built and executed
on QEMU as follows:
make qemu
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Troubleshooting:
Problems caused by out-dated project information can be addressed by
issuing one of the following commands then rebuilding the project:
make clean # discard results of previous builds
# but keep existing configuration info
or
make pristine # discard results of previous builds
# and restore pre-defined configuration info
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Sample Output:
Tickless Idle Test
Calibrating TSC...
Calibrated time stamp period = 0x00000000163adc3a
Do the real test with tickless enabled
Going idle for 10 ticks...
start ticks : 343
end ticks : 353
diff ticks : 10
diff time stamp: 0x0000000018a69898
Cal time stamp: 0x00000000163adc3a
variance in time stamp diff: 10 percent
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PROJECT EXECUTION SUCCESSFUL