From: Souradeep Chowdhury <quic_schowdhu@quicinc.com>
To: Andy Gross <agross@kernel.org>,
Konrad Dybcio <konrad.dybcio@somainline.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Bjorn Andersson <andersson@kernel.org>,
Rob Herring <robh+dt@kernel.org>
Cc: <linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <linux-arm-msm@vger.kernel.org>,
<devicetree@vger.kernel.org>,
Sibi Sankar <quic_sibis@quicinc.com>,
Rajendra Nayak <quic_rjendra@quicinc.com>,
Souradeep Chowdhury <quic_schowdhu@quicinc.com>
Subject: [PATCH V1 0/4] soc: qcom: boot_stats: Add driver support for boot_stats
Date: Tue, 21 Mar 2023 19:21:47 +0530 [thread overview]
Message-ID: <cover.1679403696.git.quic_schowdhu@quicinc.com> (raw)
Qualcomm's proprietary Android boot-loaders capture boot time
stats, like the time when the bootloader started execution and at what
point the bootloader handed over control to the kernel etc. in the IMEM
region. This information is captured in a specific format by this driver
by mapping a structure to the IMEM memory region and then accessing the
members of the structure to print the information. This information is
useful in verifying if existing boot KPIs have regressed or not.
A sample log in SM8450(waipio) device is as follows:-
KPI: Pre ABL Time = 3s
KPI: ABL Time = 14s
KPI: Kernel MPM timestamp = 890206
The Module Power Manager(MPM) sleep counter starts ticking at the PBL
stage and the timestamp generated by the sleep counter is logged by
the Qualcomm proprietary bootloader(ABL) at two points-> First when it
starts execution which is logged here as "Pre ABL Time" and the second
when it is about to load the kernel logged as "ABL Time". Both these
values are read up by the driver from IMEM region and printed as above.
The current sleep counter timestamp is also logged by the driver.
Souradeep Chowdhury (4):
dt-bindings: sram: qcom,imem: Add Boot Stat region within IMEM
dt-bindings: soc: qcom,mpm-sleep-counter: Add the dtschema
soc: qcom: boot_stat: Add Driver Support for Boot Stats
MAINTAINERS: Add the entry for boot_stats driver support
.../bindings/soc/qcom/qcom,mpm-sleep-counter.yaml | 40 ++++++++
.../devicetree/bindings/sram/qcom,imem.yaml | 20 ++++
MAINTAINERS | 7 ++
drivers/soc/qcom/Kconfig | 7 ++
drivers/soc/qcom/Makefile | 1 +
drivers/soc/qcom/boot_stats.c | 108 +++++++++++++++++++++
6 files changed, 183 insertions(+)
create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,mpm-sleep-counter.yaml
create mode 100644 drivers/soc/qcom/boot_stats.c
--
2.7.4
next reply other threads:[~2023-03-21 13:53 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-21 13:51 Souradeep Chowdhury [this message]
2023-03-21 13:51 ` [PATCH V1 1/4] dt-bindings: sram: qcom,imem: Add Boot Stat region within IMEM Souradeep Chowdhury
2023-03-21 17:31 ` Krzysztof Kozlowski
2023-03-22 13:34 ` Souradeep Chowdhury
2023-03-22 16:27 ` Krzysztof Kozlowski
2023-03-23 13:46 ` Souradeep Chowdhury
2023-03-21 13:51 ` [PATCH V1 2/4] dt-bindings: soc: qcom,mpm-sleep-counter: Add the dtschema Souradeep Chowdhury
2023-03-21 17:33 ` Krzysztof Kozlowski
2023-03-22 13:46 ` Souradeep Chowdhury
2023-03-22 16:29 ` Krzysztof Kozlowski
2023-03-23 13:49 ` Souradeep Chowdhury
2023-03-21 17:39 ` Krzysztof Kozlowski
2023-03-22 14:02 ` Souradeep Chowdhury
2023-03-22 16:31 ` Krzysztof Kozlowski
2023-03-23 13:51 ` Souradeep Chowdhury
2023-03-21 13:51 ` [PATCH V1 3/4] soc: qcom: boot_stat: Add Driver Support for Boot Stats Souradeep Chowdhury
2023-03-21 17:37 ` Krzysztof Kozlowski
2023-03-22 13:54 ` Souradeep Chowdhury
2023-03-22 14:53 ` Krzysztof Kozlowski
2023-03-23 13:45 ` Souradeep Chowdhury
2023-03-24 8:56 ` Krzysztof Kozlowski
2023-03-21 13:51 ` [PATCH V1 4/4] MAINTAINERS: Add the entry for boot_stats driver support Souradeep Chowdhury
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