[PATCH 0/3] Add fault_major, fault_minor page fault trace events

[Will Deacon]

On Wed, Apr 12, 2017 at 10:20:37PM -0400, Chris Redmon wrote:
> These changes add common trace events for major and minor page faults,
> as well as adding these traces to the arm and arm64 architectures. These
> traces offer useful information for determining the source of page faults
> in realtime systems, as well as the time penalty for taking a major or
> minor page fault.
> 
> I made an attempt to minimize the overhead when these tracepoints are not
> enabled, but I'm willing to make more changes if desired.

Why is this necessary, given that we already report these types of fault
as perf sw events?

Will