linux-kernel - Re: [PATCH 1/2] interconnect: qcom: rpmh: add optional mask to send as vote

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <9e890ca0-396d-fb97-a7d5-db13b8fdbb92@linaro.org>
Date:   Mon, 19 Jun 2023 11:45:06 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Neil Armstrong <neil.armstrong@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Georgi Djakov <djakov@...nel.org>
Cc:     linux-arm-msm@...r.kernel.org, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] interconnect: qcom: rpmh: add optional mask to send
 as vote

On 19.06.2023 10:24, Neil Armstrong wrote:
> On the SM8550 SoC, some nodes requires a specific bit mark
> instead of a bandwidth when voting.
> 
> Add an enable_mask variable to be used to vote when a node
> is enabled in an aggregate loop.
> 
> Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
> ---
Would be nice to mention that it's literally this commit:

https://git.codelinaro.org/clo/la/kernel/msm-5.15/-/commit/2d1573e0206998151b342e6b52a4c0f7234d7e36

For the code:

Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>

Konrad
>  drivers/interconnect/qcom/bcm-voter.c | 5 +++++
>  drivers/interconnect/qcom/icc-rpmh.h  | 2 ++
>  2 files changed, 7 insertions(+)
> 
> diff --git a/drivers/interconnect/qcom/bcm-voter.c b/drivers/interconnect/qcom/bcm-voter.c
> index 8f385f9c2dd3..d5f2a6b5376b 100644
> --- a/drivers/interconnect/qcom/bcm-voter.c
> +++ b/drivers/interconnect/qcom/bcm-voter.c
> @@ -83,6 +83,11 @@ static void bcm_aggregate(struct qcom_icc_bcm *bcm)
>  
>  		temp = agg_peak[bucket] * bcm->vote_scale;
>  		bcm->vote_y[bucket] = bcm_div(temp, bcm->aux_data.unit);
> +
> +		if (bcm->enable_mask && (bcm->vote_x[bucket] || bcm->vote_y[bucket])) {
> +			bcm->vote_x[bucket] = 0;
> +			bcm->vote_y[bucket] = bcm->enable_mask;
> +		}
>  	}
>  
>  	if (bcm->keepalive && bcm->vote_x[QCOM_ICC_BUCKET_AMC] == 0 &&
> diff --git a/drivers/interconnect/qcom/icc-rpmh.h b/drivers/interconnect/qcom/icc-rpmh.h
> index 04391c1ba465..7843d8864d6b 100644
> --- a/drivers/interconnect/qcom/icc-rpmh.h
> +++ b/drivers/interconnect/qcom/icc-rpmh.h
> @@ -81,6 +81,7 @@ struct qcom_icc_node {
>   * @vote_x: aggregated threshold values, represents sum_bw when @type is bw bcm
>   * @vote_y: aggregated threshold values, represents peak_bw when @type is bw bcm
>   * @vote_scale: scaling factor for vote_x and vote_y
> + * @enable_mask: optional mask to send as vote instead of vote_x/vote_y
>   * @dirty: flag used to indicate whether the bcm needs to be committed
>   * @keepalive: flag used to indicate whether a keepalive is required
>   * @aux_data: auxiliary data used when calculating threshold values and
> @@ -97,6 +98,7 @@ struct qcom_icc_bcm {
>  	u64 vote_x[QCOM_ICC_NUM_BUCKETS];
>  	u64 vote_y[QCOM_ICC_NUM_BUCKETS];
>  	u64 vote_scale;
> +	u32 enable_mask;
>  	bool dirty;
>  	bool keepalive;
>  	struct bcm_db aux_data;
>