On 11/07/13 07:28, Vince Weaver wrote: > > Support for the PERF_COUNT_SW_DUMMY event type was added in Linux 3.12. Thanks, Vince. Applied. Cheers, Michael > Signed-off-by: Vince Weaver <vincent.weaver@xxxxxxxxx> > > diff --git a/man2/perf_event_open.2 b/man2/perf_event_open.2 > index 4ff9690..a443b6e 100644 > --- a/man2/perf_event_open.2 > +++ b/man2/perf_event_open.2 > @@ -468,6 +468,13 @@ This counts the number of emulation faults. > The kernel sometimes traps on unimplemented instructions > and emulates them for user space. > This can negatively impact performance. > +.TP > +.BR PERF_COUNT_SW_DUMMY " (Since Linux 3.12)" > +This is a placeholder event that counts nothing. > +Informational sample record types such as mmap or comm > +must be associated with an active event. > +This dummy event allows gathering such records without requiring > +a counting event. > .RE > > .RS > -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
