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Wed, 19 Aug 2026 07:55:23 -0700 (PDT) X-Received: by 2002:ac8:7e8d:0:b0:51a:8945:312d with SMTP id d75a77b69052e-52dd4e01d31mr40068891cf.0.1787151322798; Wed, 19 Aug 2026 07:55:22 -0700 (PDT) Received: from [192.168.120.193] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c243c38c2fdsm89593166b.45.2026.08.19.07.55.21 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 19 Aug 2026 07:55:22 -0700 (PDT) Message-ID: Date: Wed, 19 Aug 2026 16:55:20 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2] soc: qcom: llcc: Update the SCT table for IPQ5424 To: Kathiravan Thirumoorthy , Bjorn Andersson , Konrad Dybcio Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org References: <20260811-ipq5424_llcc_updates-v2-1-1e4350585671@oss.qualcomm.com> <28bffcd1-4743-43ae-936b-9f9f92117a9e@oss.qualcomm.com> <18eb2d9f-474c-4b1c-bb57-87c7568f6612@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <18eb2d9f-474c-4b1c-bb57-87c7568f6612@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Proofpoint-GUID: yhFlWuez33lnItK7fvL_LDXUGHL9zk2k X-Proofpoint-ORIG-GUID: yhFlWuez33lnItK7fvL_LDXUGHL9zk2k X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODE5MDExNiBTYWx0ZWRfX7auTlCzbfbqN F8X/iAQXve/Xu+BpNtsJ20sZ/M0atR8PxxZUwBEje5u1jxv4e5LjbrQMJQgEIJObtImsmu7b9oQ +n2BRoyv1+eDjmBgdcUDe6tgr17H6jlZRzX+56JQ7Q6UNNbFHSmhUuNq6m7Nswh6sBn2jyr8t94 cEa1aFQE0MtWYzgrMFV+eI1KX482RZ3vS8IkD6QnS7+iSwHqQq8RC6RfvrIzDoVIc+VT60r3lJI FK7JlBg437JnA2+Rpx7V30xx2fTobkXJmsfXbSO5IxuXckBxtZliDy1Q8Ddif3wI3KUr4mY8sDf +NesdXzmy8GWjkPWvafzkPJIDqWuwBtl635p+xRDIEyVJBqvseDF2Cw4NExHoWMBh9bPqfTst2W HccnvDGM6M0cnCjFZ42PXD5+Wpd9SYHAxZkEELnDGUQSguboxcATpqgsPvPnoTfEL/H8PqlPmtF DjlRbresxTdQzDcu9EA== X-Proofpoint-Spam-Info: AW1haW4tMjYwODE5MDExNiBTYWx0ZWRfX+yvsp3XG1aXU 4UYkjZpZXeuYiD9MN8VQotK8z0mKFNpg3aFhKWJtl9cZRu/PujPdPYKWTIRwvwHTxKiL3pZ15HX 3ncjXlm4VYmS37jZhir1mWz0vrqiynk= X-Authority-Analysis: v=2.4 cv=fvfsol4f c=1 sm=1 tr=0 ts=6a85c3dc cx=c_pps a=mPf7EqFMSY9/WdsSgAYMbA==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=gowsoOTTUOVcmtlkKump:22 a=iL7UruJw4oydANBOf3QA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=dawVfQjAaf238kedN5IG:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-08-19_04,2026-08-19_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 clxscore=1015 impostorscore=0 malwarescore=0 lowpriorityscore=0 bulkscore=0 spamscore=0 priorityscore=1501 suspectscore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608190116 On 8/19/26 4:54 PM, Kathiravan Thirumoorthy wrote: > > On 8/19/2026 5:23 PM, Konrad Dybcio wrote: >> On 8/11/26 2:34 PM, Kathiravan Thirumoorthy wrote: >>> Update the IPQ5424 LLCC slice configuration table to give the PPE >>> and Wi-Fi datapaths dedicated slices. >>> >>> Assign slice IDs 1 and 5 to the PPE RX descriptor and RX fill use cases, >>> slice IDs 6 and 7 to the Wi-Fi radios connected over PCIe, and slice ID >>> 2 to the CPU subsystem. Adjust the corresponding capacities, priorities, >>> and way masks for these consumers. >>> >>> Having the dedicated slice configuration for each of these use cases helps >>> to improve the networking throughput by more than 1 Gbps. >>> >>> Rename the usecase IDs for slice IDs 1 and 2 because LLCC_CPUSS and >>> LLCC_VIDSC0 do not describe the actual users of those slices. >> This reiterates the diff, but doesn't mention the actual reason for this >> change (updated recommendations from the hardware team) > > These slice assignments are based on recommendations from our performance team, following throughput measurements on IPQ5424 — not from a hardware team. Please let me know if I'm missing something here. They can even be called the navy seals, just mention the reason for the change! FWIW the diff itself looks in line with the docs Konrad