Comment 2 for bug 1866972

Test passed on c4.large with 5.0.0-1025-aws

 selftests: ftrace: ftracetest
 ========================================
 === Ftrace unit tests ===
 [1] Basic trace file check [PASS]
 [2] Basic test for tracers [PASS]
 [3] Basic trace clock test [PASS]
 [4] Basic event tracing check [PASS]
 [5] Change the ringbuffer size [PASS]
 [6] Snapshot and tracing setting [PASS]
 [7] trace_pipe and trace_marker [PASS]
 [8] Generic dynamic event - add/remove kprobe events [PASS]
 [9] Generic dynamic event - add/remove synthetic events [PASS]
 [10] Generic dynamic event - selective clear (compatibility) [PASS]
 [11] Generic dynamic event - generic clear event [PASS]
 [12] event tracing - enable/disable with event level files [PASS]
 [13] event tracing - restricts events based on pid [PASS]
 [14] event tracing - enable/disable with subsystem level files [PASS]
 [15] event tracing - enable/disable with top level files [PASS]
 [16] Test trace_printk from module [UNRESOLVED]
 [17] ftrace - function graph filters with stack tracer [PASS]
 [18] ftrace - function graph filters [PASS]
 [19] ftrace - function pid filters [PASS]
 [20] ftrace - stacktrace filter command [PASS]
 [21] ftrace - function trace with cpumask [PASS]
 [22] ftrace - test for function event triggers [PASS]
 [23] ftrace - function trace on module [UNRESOLVED]
 [24] ftrace - function profiling [PASS]
 [25] ftrace - function profiler with function tracing [PASS]
 [26] ftrace - test reading of set_ftrace_filter [PASS]
 [27] ftrace - test for function traceon/off triggers [PASS]
 [28] Test creation and deletion of trace instances while setting an event [PASS]
 [29] Test creation and deletion of trace instances [PASS]
 [30] Kprobe dynamic event - adding and removing [PASS]
 [31] Kprobe dynamic event - busy event check [PASS]
 [32] Kprobe dynamic event with arguments [PASS]
 [33] Kprobe event with comm arguments [PASS]
 [34] Kprobe event string type argument [PASS]
 [35] Kprobe event symbol argument [PASS]
 [36] Kprobe event argument syntax [PASS]
 [37] Kprobes event arguments with types [PASS]
 [38] Kprobe event auto/manual naming [PASS]
 [39] Kprobe dynamic event with function tracer [PASS]
 [40] Kretprobe dynamic event with arguments [PASS]
 [41] Kretprobe dynamic event with maxactive [PASS]
 [42] Register/unregister many kprobe events [PASS]
 [43] Kprobe dynamic event - adding and removing [PASS]
 [44] test for the preemptirqsoff tracer [UNSUPPORTED]
 [45] Test wakeup tracer [PASS]
 [46] Test wakeup RT tracer [PASS]
 [47] event trigger - test extended error support [PASS]
 [48] event trigger - test field variable support [PASS]
 [49] event trigger - test multiple actions on hist trigger [PASS]
 [50] event trigger - test inter-event histogram trigger onmatch action [PASS]
 [51] event trigger - test inter-event histogram trigger onmatch-onmax action [PASS]
 [52] event trigger - test inter-event histogram trigger onmax action [PASS]
 [53] event trigger - test synthetic_events syntax parser [PASS]
 [54] event trigger - test event enable/disable trigger [PASS]
 [55] event trigger - test trigger filter [PASS]
 [56] event trigger - test histogram modifiers [PASS]
 [57] event trigger - test multiple histogram triggers [PASS]
 [58] event trigger - test snapshot-trigger [PASS]
 [59] event trigger - test stacktrace-trigger [PASS]
 [60] trace_marker trigger - test snapshot trigger [PASS]
 [61] trace_marker trigger - test histogram with synthetic event against kernel event [PASS]
 [62] trace_marker trigger - test histogram with synthetic event [PASS]
 [63] event trigger - test traceon/off trigger [PASS]
 [64] (instance) Basic test for tracers [PASS]
 [65] (instance) Basic trace clock test [PASS]
 [66] (instance) Change the ringbuffer size [PASS]
 [67] (instance) Snapshot and tracing setting [PASS]
 [68] (instance) trace_pipe and trace_marker [PASS]
 [69] (instance) event tracing - enable/disable with event level files [PASS]
 [70] (instance) event tracing - restricts events based on pid [PASS]
 [71] (instance) event tracing - enable/disable with subsystem level files [PASS]
 [72] (instance) ftrace - stacktrace filter command [PASS]
 [73] (instance) ftrace - test for function event triggers [PASS]
 [74] (instance) ftrace - test for function traceon/off triggers [PASS]
 [75] (instance) event trigger - test event enable/disable trigger [PASS]
 [76] (instance) event trigger - test trigger filter [PASS]
 [77] (instance) event trigger - test histogram modifiers [PASS]
 [78] (instance) event trigger - test multiple histogram triggers [PASS]
 [79] (instance) trace_marker trigger - test snapshot trigger [PASS]

 # of passed: 76
 # of failed: 0
 # of unresolved: 2
 # of untested: 0
 # of unsupported: 1
 # of xfailed: 0
 # of undefined(test bug): 0
 ok 1..1 selftests: ftrace: ftracetest [PASS]