On 29 September 2014 17:53, Pawel Moll <pawel.moll@xxxxxxx> wrote: > 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. Hi Pawel, are you still working on this? Would be happy to lend a hand if that can speed things up. Cheers, Tomeu > Pawel > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- 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
