On Tuesday 14 August 2012, Catalin Marinas wrote:
> From: Will Deacon <[email protected]>
>
> This patch adds support for the AArch64 performance counters.
>
> Signed-off-by: Will Deacon <[email protected]>
> Signed-off-by: Catalin Marinas <[email protected]>
> ---
> arch/arm64/include/asm/perf_event.h | 22 +
> arch/arm64/include/asm/pmu.h | 82 +++
> arch/arm64/kernel/perf_event.c | 1368
> +++++++++++++++++++++++++++++++++++
> tools/perf/perf.h | 6 +
Can you explain how AArch64 performance counters differ from the 32
bit ones? Do they work for AArch32 user space under AArch64 kernels?
Is it possible to share parts of the implementation with arch/arm?
Arnd
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