linux-kernel - Re: [PATCH v4 4/4] media: venus: Update core selection

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Date:   Mon, 15 Jul 2019 19:00:57 +0300
From:   Stanimir Varbanov <stanimir.varbanov@...aro.org>
To:     Aniket Masule <amasule@...eaurora.org>, linux-media@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        vgarodia@...eaurora.org
Subject: Re: [PATCH v4 4/4] media: venus: Update core selection

Hi,

On 7/2/19 5:46 PM, Aniket Masule wrote:
> Present core assignment is static. Introduced load balancing
> across the cores. Load on earch core is calculated and core
> with minimum load is assigned to given instance.
> 
> Signed-off-by: Aniket Masule <amasule@...eaurora.org>
> ---
>  drivers/media/platform/qcom/venus/helpers.c    | 69 +++++++++++++++++++++++---
>  drivers/media/platform/qcom/venus/helpers.h    |  2 +-
>  drivers/media/platform/qcom/venus/hfi_helper.h |  1 +
>  drivers/media/platform/qcom/venus/hfi_parser.h |  5 ++
>  drivers/media/platform/qcom/venus/vdec.c       |  2 +-
>  drivers/media/platform/qcom/venus/venc.c       |  2 +-
>  6 files changed, 72 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/media/platform/qcom/venus/helpers.c b/drivers/media/platform/qcom/venus/helpers.c
> index 5726d86..321e9f7 100644
> --- a/drivers/media/platform/qcom/venus/helpers.c
> +++ b/drivers/media/platform/qcom/venus/helpers.c
> @@ -26,6 +26,7 @@
>  #include "helpers.h"
>  #include "hfi_helper.h"
>  #include "hfi_venus_io.h"
> +#include "hfi_parser.h"
>  
>  struct intbuf {
>  	struct list_head list;
> @@ -331,6 +332,24 @@ static u32 load_per_instance(struct venus_inst *inst)
>  	return mbs * inst->fps;
>  }
>  
> +static u32 load_per_core(struct venus_core *core, u32 core_id)
> +{
> +	struct venus_inst *inst = NULL;
> +	u32 mbs_per_sec = 0, load = 0;
> +
> +	mutex_lock(&core->lock);
> +	list_for_each_entry(inst, &core->instances, list) {
> +		if (!(inst->clk_data.core_id == core_id))

		if (inst->clk_data.core_id != core_id)

I guess will be more readable?

> +			continue;
> +
> +		mbs_per_sec = load_per_instance(inst);
> +		load = mbs_per_sec * inst->clk_data.codec_freq_data->vpp_freq;
> +	}
> +	mutex_unlock(&core->lock);
> +
> +	return load;
> +}
> +

<cut>

-- 
regards,
Stan