From: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
To: Suzuki K Poulose <suzuki.poulose@arm.com>,
gregkh@linuxfoundation.org, mathieu.poirier@linaro.org,
leo.yan@linaro.org, alexander.shishkin@linux.intel.com,
mike.leach@linaro.org, robh+dt@kernel.org,
bjorn.andersson@linaro.org, devicetree@vger.kernel.org,
david.brown@linaro.org, mark.rutland@arm.com
Cc: rnayak@codeaurora.org, vivek.gautam@codeaurora.org,
sibis@codeaurora.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
marc.w.gonzalez@free.fr
Subject: Re: [PATCHv8 2/5] arm64: dts: qcom: msm8998: Add Coresight support
Date: Thu, 18 Jul 2019 14:44:01 +0530 [thread overview]
Message-ID: <4854b0f7-6a81-bc87-3e63-d2b7c68a44f6@codeaurora.org> (raw)
In-Reply-To: <3b192063-f31f-b861-d913-61d737cecc57@arm.com>
Hi Suzuki,
On 7/18/2019 1:58 PM, Suzuki K Poulose wrote:
> Hi Sai,
>
>
> etr@6048000 {
>> + compatible = "arm,coresight-tmc", "arm,primecell";
>> + reg = <0x06048000 0x1000>;
>> +
>> + clocks = <&rpmcc RPM_SMD_QDSS_CLK>, <&rpmcc
>> RPM_SMD_QDSS_A_CLK>;
>> + clock-names = "apb_pclk", "atclk";
>> + arm,scatter-gather;
>
> Please could you confirm that you have tested the scatter-gather mode
> with ETR ? Either via perf/sysfs. Please could you share your results ?
> Unless verified
> this is going to be fatal for the system.
>
> Similarly for other platforms.
>
Yes I have tested with scatter-gather mode with ETR on all platforms
which I have posted via sysfs(not perf) before on previous versions of
this patch series and no issues were found. And I suppose this was
discussed in v2 of this patch series [1].
As said in one of the series initially [1], QCOM msm downstream kernels
have been using scatter gather mode and we haven't seen any fatal issues.
[1] https://patchwork.kernel.org/patch/10769535/
Thanks,
Sai
--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
of Code Aurora Forum, hosted by The Linux Foundation
next prev parent reply other threads:[~2019-07-18 9:14 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-12 14:16 [PATCHv8 0/5] Add coresight support for SDM845, MSM8998 and MSM8996 Sai Prakash Ranjan
2019-07-12 14:16 ` [PATCHv8 1/5] arm64: dts: qcom: sdm845: Add Coresight support Sai Prakash Ranjan
2019-07-12 16:44 ` Suzuki K Poulose
2019-07-12 16:49 ` saiprakash.ranjan
2019-07-19 9:46 ` Suzuki K Poulose
2019-07-19 10:28 ` Sai Prakash Ranjan
2019-07-12 14:16 ` [PATCHv8 2/5] arm64: dts: qcom: msm8998: " Sai Prakash Ranjan
2019-07-18 8:28 ` Suzuki K Poulose
2019-07-18 9:14 ` Sai Prakash Ranjan [this message]
2019-07-18 9:37 ` Suzuki K Poulose
2019-07-18 9:53 ` Sai Prakash Ranjan
2019-07-12 14:16 ` [PATCHv8 3/5] arm64: dts: qcom: msm8996: " Sai Prakash Ranjan
2019-07-17 17:00 ` Mathieu Poirier
2019-07-18 5:47 ` Sai Prakash Ranjan
2019-07-18 15:31 ` Mathieu Poirier
2019-07-18 15:48 ` Bjorn Andersson
2019-07-12 14:16 ` [PATCHv8 4/5] coresight: etm4x: Add ETM PIDs for SDM845 and MSM8996 Sai Prakash Ranjan
2019-07-17 17:40 ` Mathieu Poirier
2019-07-12 14:16 ` [PATCHv8 5/5] coresight: cpu-debug: Add support for Qualcomm Kryo Sai Prakash Ranjan
2019-07-17 16:56 ` Mathieu Poirier
2019-07-21 14:35 ` Leo Yan
2019-07-22 5:48 ` Sai Prakash Ranjan
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