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This adds a test to test the function tiggers traceon and traceoff to make sure that it starts and stops tracing when a function is hit. The test performs the following: o Enables all events o Writes schedule:traceoff into set_ftrace_filter o Makes sure the tigger exists in the file o Makes sure the trace file no longer grows o Makes sure that tracing_on is now zero o Clears the trace file o Makes sure it's still empty o Removes the trigger o Makes sure tracing is still off (tracing_on is zero) o Writes schedule:traceon into set_ftrace_filter o Makes sure the trace file is no longer empty o Makes sure that tracing_on file is set to one o Removes the trigger o Makes sure the trigger is no longer there o Writes schedule:traceoff:3 into set_ftrace_filter o Makes sure that tracing_on turns off . Writes 1 into tracing_on . Makes sure that it turns off 2 more times o Writes 1 into tracing_on o Makes sure that tracing_on is still a one Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.