[PATCH v2 0/2] arm+arm64: perf: Prevent wraparound during overflow

This patchset fixes problems on arm and arm64 when the PMU counters wrap around and become larger than the value originally programmed into them.

The problem was observed and fixed on arm but the perf code is, rather to my surprise, sufficiently similar on arm64 that the fix still makes sense there too.

v2:

* Remove the redundant cast to s64 (Will Deacon).

Daniel Thompson (2): arm: perf: Prevent wraparound during overflow arm64: perf: Prevent wraparound during overflow

arch/arm/kernel/perf_event.c | 10 ++++++++-- arch/arm64/kernel/perf_event.c | 10 ++++++++-- 2 files changed, 16 insertions(+), 4 deletions(-)

-- 1.9.3