linux-kernel - Re: [PATCH v3 0/3] add sysfs nodes to configure TPDA's registers

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-prev] [day] [month] [year] [list]

Message-ID: <49bf23dc-705e-45ab-a2e3-fbb798cd8e34@linaro.org>
Date: Wed, 27 Aug 2025 12:59:59 +0100
From: James Clark <james.clark@...aro.org>
To: Jie Gan <jie.gan@....qualcomm.com>,
 Suzuki K Poulose <suzuki.poulose@....com>
Cc: coresight@...ts.linaro.org, linux-arm-kernel@...ts.infradead.org,
 linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
 Mike Leach <mike.leach@...aro.org>,
 Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
 Tingwei Zhang <tingwei.zhang@....qualcomm.com>
Subject: Re: [PATCH v3 0/3] add sysfs nodes to configure TPDA's registers



On 27/08/2025 11:55 am, Jie Gan wrote:
> Patchset 1 introduces configuration of the cross-trigger registers with
> appropriate values to enable proper generation of cross-trigger packets.
> 
> Patchset 2 introduces a logic to configure the TPDA_SYNCR register,
> which determines the frequency of ASYNC packet generation. These packets
> assist userspace tools in accurately identifying each valid packet.
> 
> Patchset 3 introduces a sysfs node to initiate a flush request for the
> specific port, forcing the data to synchronize and be transmitted to the
> sink device.
> 
> Changes in V3:
> 1. Optimizing codes according to James's comment.
> Link to V2 - https://lore.kernel.org/all/20250827042042.6786-1-jie.gan@oss.qualcomm.com/
> 
> Changes in V2:
> 1. Refactoring the code based on James's comment for optimization.
> Link to V1 - https://lore.kernel.org/all/20250826070150.5603-1-jie.gan@oss.qualcomm.com/
> 
> Tao Zhang (3):
>    coresight: tpda: add sysfs nodes for tpda cross-trigger configuration
>    coresight: tpda: add logic to configure TPDA_SYNCR register
>    coresight: tpda: add sysfs node to flush specific port
> 
>   .../testing/sysfs-bus-coresight-devices-tpda  |  50 ++++
>   drivers/hwtracing/coresight/coresight-tpda.c  | 278 ++++++++++++++++++
>   drivers/hwtracing/coresight/coresight-tpda.h  |  33 ++-
>   3 files changed, 360 insertions(+), 1 deletion(-)
>   create mode 100644 Documentation/ABI/testing/sysfs-bus-coresight-devices-tpda
> 

Reviewed-by: James Clark <james.clark@...aro.org>