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[103.229.16.4]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-845cdfac944sm5773852b3a.12.2026.06.29.03.17.33 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 29 Jun 2026 03:17:36 -0700 (PDT) Message-ID: Date: Mon, 29 Jun 2026 18:17:08 +0800 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v14 0/7] Provide support for Trigger Generation Unit To: Greg KH Cc: andersson@kernel.org, alexander.shishkin@linux.intel.com, mike.leach@linaro.org, konrad.dybcio@oss.qualcomm.com, suzuki.poulose@arm.com, james.clark@arm.com, krzk+dt@kernel.org, conor+dt@kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, coresight@lists.linaro.org, devicetree@vger.kernel.org References: <20260417073336.2712426-1-songwei.chai@oss.qualcomm.com> <48c6abce-c492-46a6-84ef-3074983e817c@oss.qualcomm.com> <2026062959-distaste-launder-e253@gregkh> Content-Language: en-US From: "Songwei.Chai" In-Reply-To: <2026062959-distaste-launder-e253@gregkh> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Proofpoint-ORIG-GUID: QrN1iFxqVxU_l1clhw-sReO3ikZlzi2a X-Authority-Analysis: v=2.4 cv=Z4Hc2nRA c=1 sm=1 tr=0 ts=6a424642 cx=c_pps a=oF/VQ+ItUULfLr/lQ2/icg==:117 a=nuhDOHQX5FNHPW3J6Bj6AA==:17 a=IkcTkHD0fZMA:10 a=FelO9ux0wxsA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=gowsoOTTUOVcmtlkKump:22 a=Svlu2gy5LF0AZrWEB8IA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=3WC7DwWrALyhR5TkjVHa:22 X-Proofpoint-Spam-Info: AW1haW4tMjYwNjI5MDA4MiBTYWx0ZWRfX751ugaoPQiB6 W+7YpHxuY8lelUh8jTeuGf9hdpvGZvwSvVVHvqdxsLB9ulctk+/n4FQgUe0nd8yxD+92r0mi1RW 58NHAronioZAk1aB9QFU8GBtcu6YohM= X-Proofpoint-GUID: QrN1iFxqVxU_l1clhw-sReO3ikZlzi2a X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjI5MDA4MiBTYWx0ZWRfX8CCkLHQ5iCRP kPgxv4B/uJGeQnzUzqUvjIVngaiV+TXf0iEPPX5/CDip9rXrtchyymnhleY+P4ENlZ9brQILx+6 DBjEXN2zM/TibMd2uE1GeEO/IppKZWXQnmNKA4+QyBhMhnLD6h/1Awaw8Uj3VhFKPeNRLt77Yew NzthlOMCEpulNSR2zfYsn/teeGbbBlEA1HlOtC2woPuUKi4TB+k3vOPxfSumvT4gOx+juCTPvJI bcIDYY+yITv1Lr5SrPw2r2mRqHeI4cZDJlcZRp9rWMrBb7Be+Ghu8IO9/opoOPE1r93DbL6h9V+ ihpIFOE5PL7LG8nxqHsMPAKvOVZ4cJlZECY3+pCIqMhc419FVU/c39lC50KLJE+59NTz7aGoONs DnalLfAjW6X5bbOCmsSKk9/cvgU8mS/dXfWYrvzcaZboLavFguZHkHRI7HpxJ3Zgdol+DvyixEb L3ctnXVYjAYyiPwlfug== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-06-29_02,2026-06-26_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 suspectscore=0 lowpriorityscore=0 priorityscore=1501 bulkscore=0 spamscore=0 impostorscore=0 phishscore=0 clxscore=1015 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2606290082 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260629_031739_744918_1C1C7FC1 X-CRM114-Status: GOOD ( 15.58 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 6/29/2026 12:22 PM, Greg KH wrote: > On Mon, Jun 29, 2026 at 11:03:33AM +0800, Songwei.Chai wrote: >> Hi Greg & Alexander, >> >> Apologies for interrupting again. >> >> As the TGU hardware plays an important role in Qualcomm tracing design, I >> would greatly appreciate it if you could kindly take some time to review >> this at your earliest convenience. > The merge window _just_ closed, please give us a chance to catch up. > > Also, why us? Surely you have other reviewers for this code, right? Hi Greg, Understood, thanks for letting us know. Regarding your question: since this introduces a new drivers/hwtracing/qcom directory, there is no existing maintainer for it. Given your scope (and Alexander's), we believe you are the most relevant reviewers. The reason for creating the qcom directory is as follows: /We previously tried to upstream this driver under drivers/hwtracing/coresight,/ /but it was not accepted as it is considered Qualcomm-specific and not tightly/ /coupled with the CoreSight subsystem. Based on this feedback, we are exploring/ /a dedicated drivers/hwtracing/qcom directory, similar to intel_th, to better/ /support this and future Qualcomm hwtracing drivers./ More details can be found in “[PATCH v14 0/7] -- Why we are proposing this”. Thanks, Songwei > > thanks, > > greg k-h