This patch series enables the Arm Statistical Profiling Extension (SPE) on ACPI platforms. This is possible because ACPI 6.3 uses a previously reserved field in the MADT to store the SPE interrupt number, similarly to how the normal PMU is described. If a consistent valid interrupt exists across all the cores in the system, a platform device is registered. That then triggers the SPE module, which runs as normal. Jeremy Linton (3): ACPICA: ACPI 6.3: Add MADT/GICC/SPE extension. arm_pmu: acpi: spe: Add initial MADT/SPE probing perf: arm_spe: Enable ACPI/Platform automatic module loading arch/arm64/include/asm/acpi.h | 4 +++ drivers/perf/arm_pmu_acpi.c | 67 +++++++++++++++++++++++++++++++++++ drivers/perf/arm_spe_pmu.c | 11 ++++-- include/acpi/actbl2.h | 5 +-- 4 files changed, 83 insertions(+), 4 deletions(-) -- 2.17.2
