Hello I have a perf API question.
When I run PERF_EVENT_IOC_RESET, all it resets is the event count. It does not reset the PERF_FORMAT_TOTAL_TIME_ENABLED or PERF_FORMAT_TOTAL_TIME_RUNNING values. Is this expected? It means if I'm trying to do multiplexing and want to reset the counts to zero, there's no way to reset the enabled/running values. I suppose I can just close/reopen the events, or allocate some space to store the previous values, but that seems like unncessary overhead. As an aside while I have your attention, can someone explain the difference between the "inherit" and the "inherit_stat" options in perf.attr? I can't seem to make a test case exhibit a difference, and the events/core.c code in the kernel is a horrible wall of uncommented code that is nearly impossible to follow. Thanks, Vince vweav...@eecs.utk.edu -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
