linux-kernel - [PATCH v5 0/2] coresight: Add label sysfs node support

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20241210122253.31926-1-quic_jinlmao@quicinc.com>
Date: Tue, 10 Dec 2024 20:22:51 +0800
From: Mao Jinlong <quic_jinlmao@...cinc.com>
To: Suzuki K Poulose <suzuki.poulose@....com>,
        Mike Leach
	<mike.leach@...aro.org>, James Clark <james.clark@....com>,
        Rob Herring
	<robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
	<conor+dt@...nel.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        "Bjorn
 Andersson" <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>
CC: Mao Jinlong <quic_jinlmao@...cinc.com>, <coresight@...ts.linaro.org>,
        <linux-arm-kernel@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>
Subject: [PATCH v5 0/2] coresight: Add label sysfs node support

With current design, the name of the non-cpu bounded coresight
component is the device type with the number. And with 'ls' command
we can get the register address of the component. But from these
information, we can't know what the HW or system the component belongs
to. Add label in DT and show the hw information by reading label sysfs
node.

cti_sys0 -> ../../../devices/platform/soc@...38f0000.cti/cti_sys0
cti_sys1 -> ../../../devices/platform/soc@...3900000.cti/cti_sys1
tpdm0 -> ../../../devices/platform/soc@...0b0d000.tpdm/tpdm0
tpdm1 -> ../../../devices/platform/soc@...0c28000.tpdm/tpdm1
tpdm2 -> ../../../devices/platform/soc@...0c29000.tpdm/tpdm2

/sys/bus/coresight/devices # cat cti*/label
cti_dlct_0
cti_dlct_1
cti_apss_0
cti_apss_1
cti_apss_2

Change since V4:
1. Add label in DT and add label sysfs node for each coresight device. 

Change since V3:
1. Change device-name to arm,cs-dev-name.
2. Add arm,cs-dev-name to only CTI and sources' dt-binding.

Change since V2:
1. Fix the error in coresight core.
drivers/hwtracing/coresight/coresight-core.c:1775:7: error: assigning to 'char *' from 'const char *' discards qualifiers

2. Fix the warning when run dtbinding check.
Documentation/devicetree/bindings/arm/arm,coresight-cpu-debug.yaml: device-name: missing type definition

Change since V1:
1. Change coresight-name to device name.
2. Add the device-name in coresight dt bindings.

Mao Jinlong (2):
  dt-bindings: arm: Add label in the coresight components
  coresight: Add label sysfs node support

 .../testing/sysfs-bus-coresight-devices-cti   |  6 ++++
 .../sysfs-bus-coresight-devices-funnel        |  6 ++++
 .../testing/sysfs-bus-coresight-devices-tpdm  |  6 ++++
 .../bindings/arm/arm,coresight-cti.yaml       |  6 ++++
 .../arm/arm,coresight-dummy-sink.yaml         |  6 ++++
 .../arm/arm,coresight-dummy-source.yaml       |  6 ++++
 .../arm/arm,coresight-dynamic-funnel.yaml     |  6 ++++
 .../arm/arm,coresight-dynamic-replicator.yaml |  6 ++++
 .../arm/arm,coresight-static-funnel.yaml      |  6 ++++
 .../arm/arm,coresight-static-replicator.yaml  |  6 ++++
 .../bindings/arm/arm,coresight-tmc.yaml       |  6 ++++
 .../bindings/arm/qcom,coresight-tpda.yaml     |  6 ++++
 .../bindings/arm/qcom,coresight-tpdm.yaml     |  6 ++++
 drivers/hwtracing/coresight/coresight-sysfs.c | 32 +++++++++++++++++++
 14 files changed, 110 insertions(+)

-- 
2.17.1