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 README for unittest csnippet
==============================

This is a simple unit testing framework for C code.  The header unittest.h
contains all assertion functions to use in your unit test. A python script -
runtest.py - is used to to run all unit tests passed to it and print their
respective result.

The basic usage is as follows:

1) Create your unit test using the following skeleton code:

#include "unittest.h"

int main(int argc, char **argv)
{
	return TEST_PASS;
}

2) Add some assertions testing your code. You might need to include further
   headers.

3) Compile the unit test, linking it against the code you want to test.
   Alternatively your unit test could also be part of the software your writing
   and activated/deactivated through preprocessor macros.

4) Run the unit test either manually or using runtest.py:

   ./runtest.py <unittest>

   When manually running the unit test, it returns 0 if the test was passed and
   1 if there was an assertion error. Additionally an error message is printed
   on the first assertion error.
/diff/Makefile?id=79c6f448c8b79c321e4a1f31f98194e4f6b6cae7&id2=0c744ea4f77d72b3dcebb7a8f2684633ec79be88'>diff)
tracing: Fix hwlat kthread migration
The hwlat tracer creates a kernel thread at start of the tracer. It is pinned to a single CPU and will move to the next CPU after each period of running. If the user modifies the migration thread's affinity, it will not change after that happens. The original code created the thread at the first instance it was called, but later was changed to destroy the thread after the tracer was finished, and would not be created until the next instance of the tracer was established. The code that initialized the affinity was only called on the initial instantiation of the tracer. After that, it was not initialized, and the previous affinity did not match the current newly created one, making it appear that the user modified the thread's affinity when it did not, and the thread failed to migrate again. Cc: stable@vger.kernel.org Fixes: 0330f7aa8ee6 ("tracing: Have hwlat trace migrate across tracing_cpumask CPUs") Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'Makefile')