On Wed, Nov 23, 2016 at 04:44:42AM -0500, [email protected] wrote: > From: Kan Liang <[email protected]> > > Iterating all events which need to receive side-band events also bring > some overhead. > Save the overhead information in task context or CPU context, whichever > context is available. > > Signed-off-by: Kan Liang <[email protected]> > --- > include/linux/perf_event.h | 2 ++ > include/uapi/linux/perf_event.h | 1 + > kernel/events/core.c | 32 ++++++++++++++++++++++++++++---- > 3 files changed, 31 insertions(+), 4 deletions(-)
Guess?
