This series implements tests exercising the PMUv3 event counters.
It tests both the 32-bit and 64-bit versions. Overflow interrupts
also are checked. Those tests only are written for arm64.
It allowed to reveal some issues related to SW_INCR implementation
(esp. related to 64-bit implementation), some problems related to
32-bit <-> 64-bit transitions and consistency of enabled states
of odd and event counters.
Overflow interrupt testing relies of one patch from Andre
("arm: gic: Provide per-IRQ helper functions") to enable the
PPI 23, coming from "arm: gic: Test SPIs and interrupt groups"
(https://patchwork.kernel.org/cover/11234975/). Drew kindly
provided "arm64: Provide read/write_sysreg_s".
All PMU tests can be launched with:
./run_tests.sh -g pmu
Tests also can be launched individually. For example:
./arm-run arm/pmu.flat -append 'chained-sw-incr'
With KVM:
- chain-promotion and chained-sw-incr are known to be failing.
- Problems were reported upstream.
With TCG:
- pmu-event-introspection is failing due to missing required events
(we may remove this from TCG actually)
- chained-sw-incr also fails. I haven't investigated yet.
The series can be found at:
https://github.com/eauger/kut/tree/pmu_event_counters_v1
History:
v1 -> v2:
- Use new report() proto
- Style cleanup
- do not warn about ARM spec recommendations
- add a comment about PMCEID0/1 splits
Andre Przywara (1):
arm: gic: Provide per-IRQ helper functions
Andrew Jones (1):
arm64: Provide read/write_sysreg_s
Eric Auger (8):
arm: pmu: Let pmu tests take a sub-test parameter
arm: pmu: Add a pmu struct
arm: pmu: Check Required Event Support
arm: pmu: Basic event counter Tests
arm: pmu: Test chained counter
arm: pmu: test 32-bit <-> 64-bit transitions
arm/arm64: gic: Introduce setup_irq() helper
arm: pmu: Test overflow interrupts
arm/gic.c | 24 +-
arm/pmu.c | 783 ++++++++++++++++++++++++++++++++++++++++-
arm/unittests.cfg | 55 ++-
lib/arm/asm/gic-v3.h | 2 +
lib/arm/asm/gic.h | 12 +
lib/arm/gic.c | 101 ++++++
lib/arm64/asm/sysreg.h | 11 +
7 files changed, 950 insertions(+), 38 deletions(-)
--
2.20.1
