linux-kernel - Re: [PATCH v1] perf/hx_arm_ni: Support uncore ARM NI-700 PMU

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Message-Id: <170660659476.701701.9606670675803489364.robh@kernel.org>
Date: Tue, 30 Jan 2024 03:23:15 -0600
From: Rob Herring <robh@...nel.org>
To: "JiaLong.Yang" <jialong.yang@...ngroup.cn>
Cc: shenghui.qu@...ngroup.cn, Rob Herring <robh+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Mark Rutland <mark.rutland@....com>, 
 devicetree@...r.kernel.org, zhijie.ren@...ngroup.cn, 
 Will Deacon <will@...nel.org>, linux-arm-kernel@...ts.infradead.org, 
 ke.zhao@...ngroup.cn, linux-kernel@...r.kernel.org, 
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Subject: Re: [PATCH v1] perf/hx_arm_ni: Support uncore ARM NI-700 PMU

On Tue, 30 Jan 2024 16:17:43 +0800, JiaLong.Yang wrote:
> This code is based on uncore PMUs arm_smmuv3_pmu and arm-cmn.
> One ni-700 can have many clock domains. Each of them has only one PMU.
> Here one PMU corresponds to one 'struct ni_pmu' instance.
> PMU name will be ni_pmu_N_M, which N means different NI-700s and M means
> different PMU in one NI-700. If only one NI-700 found in NI-700, name will
> be ni_pmu_N.
> Node interface event name will be xxni_N_eventname, such as asni_0_rdreq_any.
> There are many kinds of type of nodes in one clock domain. Also means that
> there are many kinds of that in one PMU. So we distinguish them by xxni string.
> Besides, maybe there are many nodes have same type. So we have number N in
> event name.
> By ni_pmu_0_0/asni_0_rdreq_any/, we can pinpoint accurate bus traffic.
> Example1: perf stat -a -e ni_pmu_0_0/asni_0_rdreq_any/,ni_pmu_0_0/cycles/
> EXample2: perf stat -a -e ni_pmu_0_0/asni,id=0,event=0x0/
> 
> Signed-off-by: JiaLong.Yang <jialong.yang@...ngroup.cn>
> ---
> If I should send Doc*/bindings/perf/*.yaml seperately?
> 
>  .../bindings/perf/hx,c2000-arm-ni.yaml        |   58 +
>  .../devicetree/bindings/vendor-prefixes.yaml  |    2 +
>  MAINTAINERS                                   |    6 +
>  drivers/perf/Kconfig                          |   10 +
>  drivers/perf/Makefile                         |    1 +
>  drivers/perf/hx_arm_ni.c                      | 1308 +++++++++++++++++
>  6 files changed, 1385 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/perf/hx,c2000-arm-ni.yaml
>  create mode 100644 drivers/perf/hx_arm_ni.c
> 

My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):

yamllint warnings/errors:
/Documentation/devicetree/bindings/perf/hx,c2000-arm-ni.yaml:54:1: [error] syntax error: found character '\t' that cannot start any token (syntax)

dtschema/dtc warnings/errors:
make[2]: *** Deleting file 'Documentation/devicetree/bindings/perf/hx,c2000-arm-ni.example.dts'
Documentation/devicetree/bindings/perf/hx,c2000-arm-ni.yaml:54:1: found a tab character where an indentation space is expected
make[2]: *** [Documentation/devicetree/bindings/Makefile:26: Documentation/devicetree/bindings/perf/hx,c2000-arm-ni.example.dts] Error 1
make[2]: *** Waiting for unfinished jobs....
/Documentation/devicetree/bindings/perf/hx,c2000-arm-ni.yaml:54:1: found a tab character where an indentation space is expected
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/perf/hx,c2000-arm-ni.yaml: ignoring, error parsing file
make[1]: *** [/builds/robherring/dt-review-ci/linux/Makefile:1428: dt_binding_check] Error 2
make: *** [Makefile:240: __sub-make] Error 2

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20240130081745.13750-1-jialong.yang@shingroup.cn

The base for the series is generally the latest rc1. A different dependency
should be noted in *this* patch.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit after running the above command yourself. Note
that DT_SCHEMA_FILES can be set to your schema file to speed up checking
your schema. However, it must be unset to test all examples with your schema.