[PATCH v3 0/3] perf: Add PERF_EVENT_IOC_INC_EVENT_LIMIT

[Charlie Jenkins]

Introduce a new perf ioctl key PERF_EVENT_IOC_INC_EVENT_LIMIT that
functions the same as PERF_EVENT_IOC_REFRESH, except it does not
immediately enable counters.

Also create a libperf API perf_evsel__refresh() to allow libperf users
access to this ioctl key.

Signed-off-by: Charlie Jenkins <charlie@xxxxxxxxxxxx>
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This series is going to cause an issue conflict with another series I
sent [1]. The final patch of this series changes perf_evsel__ioctl() to
accept a unsigned long instead of void *. My preference would be for the
following patch to be squashed onto "libperf: Add perf_evsel__refresh()
function" when applied: