Re: [PATCH 03/14] perf/x86: output multiplexing overhead
From: Peter Zijlstra
Date: Wed Nov 23 2016 - 15:06:59 EST
On Wed, Nov 23, 2016 at 04:44:41AM -0500, kan.liang@xxxxxxxxx wrote:
> From: Kan Liang <kan.liang@xxxxxxxxx>
> Multiplexing overhead is one of the key overhead when the number of
> events is more than available counters.
> Signed-off-by: Kan Liang <kan.liang@xxxxxxxxx>
> include/linux/perf_event.h | 2 ++
> include/uapi/linux/perf_event.h | 1 +
> kernel/events/core.c | 16 ++++++++++++++++
> 3 files changed, 19 insertions(+)
The subject says x86 specific, but its _all_ core code.