selftests: ftrace: Add inter-event hist triggers testcases
This adds inter-event hist triggers testcases which covers following: - create/remove synthetic event - disable histogram for synthetic event - extended error support - field variable support - histogram variables - histogram trigger onmatch action - histogram trigger onmax action - histogram trigger onmatch-onmax action - simple expression support - combined histogram Here is the test result. === Ftrace unit tests === [1] event trigger - test extended error support [PASS] [2] event trigger - test field variable support [PASS] [3] event trigger - test inter-event combined histogram trigger [PASS] [4] event trigger - test inter-event histogram trigger onmatch action [PASS] [5] event trigger - test inter-event histogram trigger onmatch-onmax action [PASS] [6] event trigger - test inter-event histogram trigger onmax action [PASS] [7] event trigger - test synthetic event create remove [PASS] Link: http://lkml.kernel.org/r/e07ef1e72f7bf0f84dc87c9b736d6dc91b4b0b49.1516069914.git.tom.zanussi@linux.intel.comSigned-off-by: Rajvi Jingar <rajvi.jingar@intel.com> Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
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