linux-kernel - Re: [PATCH 2/2 V2] remoteproc: qcom: Add full coredump fallback mechanism

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Message-ID: <271132da-4a6a-afd9-4509-47035dd18a8e@quicinc.com>
Date:   Sat, 21 May 2022 11:44:38 +0530
From:   Sibi Sankar <quic_sibis@...cinc.com>
To:     Yogesh Lal <quic_ylal@...cinc.com>, <bjorn.andersson@...aro.org>
CC:     <linux-arm-msm@...r.kernel.org>,
        <linux-remoteproc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Siddharth Gupta <sidgup@...eaurora.org>
Subject: Re: [PATCH 2/2 V2] remoteproc: qcom: Add full coredump fallback
 mechanism

Hey Yogesh,
Looks like you missed adding the patch that uses the exported
rproc_cleanup api.


On 5/10/22 4:55 PM, Yogesh Lal wrote:
> From: Siddharth Gupta <sidgup@...eaurora.org>
> 
> If a remoteproc's firmware does not support minidump but the driver
> adds an ID, the minidump driver does not collect any coredumps when
> the remoteproc crashes. This hinders the purpose of coredump
> collection. This change adds a fallback mechanism in the event of a
> crash.
> 

Reviewed-by: Sibi Sankar <quic_sibis@...cinc.com>

> Signed-off-by: Siddharth Gupta <sidgup@...eaurora.org>
> Signed-off-by: Yogesh Lal <quic_ylal@...cinc.com>
> ---
>   drivers/remoteproc/qcom_common.c   | 7 +++++--
>   drivers/remoteproc/qcom_q6v5_pas.c | 1 +
>   2 files changed, 6 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/remoteproc/qcom_common.c b/drivers/remoteproc/qcom_common.c
> index 4b91e3c..b3fdc66 100644
> --- a/drivers/remoteproc/qcom_common.c
> +++ b/drivers/remoteproc/qcom_common.c
> @@ -163,8 +163,11 @@ void qcom_minidump(struct rproc *rproc, unsigned int minidump_id)
>   	 */
>   	if (subsystem->regions_baseptr == 0 ||
>   	    le32_to_cpu(subsystem->status) != 1 ||
> -	    le32_to_cpu(subsystem->enabled) != MD_SS_ENABLED ||
> -	    le32_to_cpu(subsystem->encryption_status) != MD_SS_ENCR_DONE) {
> +	    le32_to_cpu(subsystem->enabled) != MD_SS_ENABLED) {
> +		return rproc_coredump(rproc);
> +	}
> +
> +	if (le32_to_cpu(subsystem->encryption_status) != MD_SS_ENCR_DONE) {
>   		dev_err(&rproc->dev, "Minidump not ready, skipping\n");
>   		return;
>   	}
> diff --git a/drivers/remoteproc/qcom_q6v5_pas.c b/drivers/remoteproc/qcom_q6v5_pas.c
> index 401b1ec..6e5cbca 100644
> --- a/drivers/remoteproc/qcom_q6v5_pas.c
> +++ b/drivers/remoteproc/qcom_q6v5_pas.c
> @@ -274,6 +274,7 @@ static const struct rproc_ops adsp_minidump_ops = {
>   	.start = adsp_start,
>   	.stop = adsp_stop,
>   	.da_to_va = adsp_da_to_va,
> +	.parse_fw = qcom_register_dump_segments,
>   	.load = adsp_load,
>   	.panic = adsp_panic,
>   	.coredump = adsp_minidump,
>