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Sun, 13 Sep 2026 11:11:21 -0700 (PDT) X-Received: by 2002:a05:6a20:9f95:b0:3da:80a1:f2f with SMTP id adf61e73a8af0-3daed5d1801mr27525967637.14.1789323081261; Sun, 13 Sep 2026 11:11:21 -0700 (PDT) Received: from [192.168.29.166] ([49.43.234.155]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-33baf0ea9a1sm19430817eec.8.2026.09.13.11.11.15 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 13 Sep 2026 11:11:20 -0700 (PDT) Message-ID: <41b0842f-7625-4016-b863-ee4eb835dfe4@oss.qualcomm.com> Date: Sun, 13 Sep 2026 23:41:13 +0530 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 v4 2/3] soc: qcom: stats: Add stats compatible and config for Shikra To: Sneh Mankad , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Maulik Shah Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Konrad Dybcio , Maulik Shah References: <20260907-shikra_stats-v4-0-3825351f9740@oss.qualcomm.com> <20260907-shikra_stats-v4-2-3825351f9740@oss.qualcomm.com> Content-Language: en-US From: Komal Bajaj In-Reply-To: <20260907-shikra_stats-v4-2-3825351f9740@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Info: AW1haW4tMjYwOTEzMDI1NyBTYWx0ZWRfX+kECY8T0DJ7S xKOe4QGwx7o1SWNZVdUSJ07++kvW9z4fK/zfQPlVC7fwblLD7+7thY3limYonQomVwLoirdazmA e+krNd8pmv/fVmrcPPdfMUQoWkCKWbM= X-Proofpoint-GUID: hHSpDcbwaen-n2ek5IzBM0p-xDggJgV4 X-Authority-Analysis: v=2.4 cv=BdZNQbt2 c=1 sm=1 tr=0 ts=6aa6e74a cx=c_pps a=rz3CxIlbcmazkYymdCej/Q==:117 a=1XLMJXld7+1tWuaUSnCLHA==:17 a=IkcTkHD0fZMA:10 a=VdqzKS8jKosA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=Um2Pa8k9VHT-vaBCBUpS:22 a=EUspDBNiAAAA:8 a=vw02Y3r-7rk9LANHpykA:9 a=QEXdDO2ut3YA:10 a=bFCP_H2QrGi7Okbo017w:22 X-Proofpoint-ORIG-GUID: hHSpDcbwaen-n2ek5IzBM0p-xDggJgV4 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTEzMDI1NyBTYWx0ZWRfX4G/3Ak7fP0bk bb//linozFpBuZngUdp11ZgxzrLibjXPe6BNB89DlPPZ+SZ3fLcFMoYEDWj8visA/hu7HSevTqh ItNHGl/E6GMVcH1eSlXcCYaOptVrpVKHIAwwgZe1yy/Cq9U3VBB94kNvksTBLp7JUs5X8V/p7i+ nQ+rhHLB6S/b1S9BXgBFET7Fj6gtFwNwWj9BthdoqRRKVMMywmxRAnzGRyJ6XxPsM+5wjgDEDyu PHUSKVfpWUCLPTFMV7KJsAi09ECqe8zfUfhmADiqnpo9P5gcOMe/MNB8wRFCApnzq6sUuV7F0PM 4vhpKk3M3Bon2hzjDKjpm+BiEQWItbSallKnFq1PeAesfEaxReiw+AsSbt6ApznPeuTtToAsxWP eUnc2QR2a8Ej6F+fo0nBCGZ5SXa5skSnJF3VWuqYdUWAUKMUb+EGO9KE+YhBliY6GHgWjTaaCUA dQGncjjne898eDLBY1Q== 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=2026-09-13_06,2026-09-11_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 suspectscore=0 adultscore=0 malwarescore=0 clxscore=1015 spamscore=0 bulkscore=0 lowpriorityscore=0 phishscore=0 impostorscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2609130257 On 9/7/2026 7:17 PM, Sneh Mankad wrote: > SoC LPM stats are present in RPM MSGRAM and subsystem LPM stats are > present in SMEM for Shikra. > > For earlier targets using RPM processor like msm8974, rpm_master_stat.c was > used for subsystem LPM stats since those stats were populated in RPM > MSGRAM. > > Here is a brief summary of previous targets and their stats configuration, > along with the drivers used to display them. > > +---------------|----------------------------|---------------------------+ > | SoC | subsystem LPM stats | SoC LPM stats | > |---------------|----------------------------|---------------------------| > | msm8974, | RPM processor MSGRAM | RPM processor MSGRAM | > | msm8226 | (rpm_master_stat.c) | (qcom_stats.c) | > |---------------|----------------------------|---------------------------| > | sm6350, | SMEM (DDR) | AOP processor MSGRAM | > | sdm845, etc. | (qcom_stats.c) | (qcom_stats.c) | > |---------------|----------------------------|---------------------------| > | Shikra | SMEM (DDR) | RPM processor MSGRAM | > | | (qcom_stats.c) | (qcom_stats.c) | > +---------------|----------------------------|---------------------------+ > > qcom_stats.c supports both the configurations for shikra, reading subsystem > LPM stats from SMEM and reading SoC LPM stats from RPM MSGRAM. > > A generic "qcom,rpm-stats" compatible only reads SoC LPM stats like vmin > and vlow. Add shikra rpm compatible and config to read subsystem LPM > stats too along with SoC LPM stats. > > Below is an example showing LPM stats for "apss" subsystem with this > change: > > cat /sys/kernel/debug/qcom_stats/apss > Count: 2192 > Last Entered At: 5498618336 > Last Exited At: 5498708046 > Accumulated Duration: 2046572620. > > Reviewed-by: Konrad Dybcio > Reviewed-by: Maulik Shah > Signed-off-by: Sneh Mankad Reviewed-by: Komal Bajaj