Re: [kvm-unit-tests PATCH v3 00/10] arm/arm64: Add IPI/LPI/vtimer latency test

[Andrew Jones <drjones@redhat.com>]

On Fri, Jul 31, 2020 at 03:42:34PM +0800, Jingyi Wang wrote:
> With the development of arm gic architecture, we think it will be useful
> to add some performance test in kut to measure the cost of interrupts.
> In this series, we add GICv4.1 support for ipi latency test and
> implement LPI/vtimer latency test.
> 
> This series of patches has been tested on GICv4.1 supported hardware.
> 
> Note:
> Based on patch "arm/arm64: timer: Extract irqs at setup time",
> https://www.spinics.net/lists/kvm-arm/msg41425.html
> 
> * From v2:
>   - Code and commit message cleanup
>   - Clear nr_ipi_received before ipi_exec() thanks for Tao Zeng's review
>   - rebase the patch "Add vtimer latency test" on Andrew's patch

It'd be good if you'd reposted my patch along with this series, since we
didn't merge mine yet either. Don't worry about now, though, I'll pick it
up the same time I pick up this series, which I plan to do later today
or tomorrow.

Getting this series applied will allow me to try out our new and shiny
gitlab repo :-)

Thanks,
drew

>   - Add test->post() to get actual PPI latency
> 
> * From v1:
>   - Fix spelling mistake
>   - Use the existing interface to inject hw sgi to simply the logic
>   - Add two separate patches to limit the running times and time cost
>     of each individual micro-bench test
> 
> Jingyi Wang (10):
>   arm64: microbench: get correct ipi received num
>   arm64: microbench: Generalize ipi test names
>   arm64: microbench: gic: Add ipi latency test for gicv4.1 support kvm
>   arm64: its: Handle its command queue wrapping
>   arm64: microbench: its: Add LPI latency test
>   arm64: microbench: Allow each test to specify its running times
>   arm64: microbench: Add time limit for each individual test
>   arm64: microbench: Add vtimer latency test
>   arm64: microbench: Add test->post() to further process test results
>   arm64: microbench: Add timer_post() to get actual PPI latency
> 
>  arm/micro-bench.c          | 256 ++++++++++++++++++++++++++++++-------
>  lib/arm/asm/gic-v3.h       |   3 +
>  lib/arm/asm/gic.h          |   1 +
>  lib/arm64/gic-v3-its-cmd.c |   3 +-
>  4 files changed, 219 insertions(+), 44 deletions(-)
> 
> -- 
> 2.19.1
> 
>