On Mon, 2014-09-29 at 16:32 +0100, Peter Zijlstra wrote: > Also none of the many words above describe > PERF_SAMPLE_USERSPACE_EVENT(), wth is that about? Hopefully description of the v2 makes better job in this: http://thread.gmane.org/gmane.linux.kernel/1793272/focus=4813 where it's already called "UEVENT" and was generated by write(). Before you get into this, though, the most important outcomes of both v1 and v2 discussions: * Ingo suggested prctl(PR_TRACE_UEVENT, type, size, data, 0) as the way of generating such events (so the tracee doesn't have to know the fd to do ioctl); Frederic seems to have the same on his mind. * Namhyung proposed sticking the userspace-originating events into the buffer as PERF_RECORD_UEVENT rather then PERF_SAMPLE_UEVENT. Working on making both happen now. Pawel -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
