linux-kernel - Re: [PATCH v21 3/9] media: test-drivers: Set REQBUFS minimum number of buffers

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Date: Thu, 21 Mar 2024 14:53:34 +0100
From: Mauro Carvalho Chehab <mchehab@...nel.org>
To: Benjamin Gaignard <benjamin.gaignard@...labora.com>
Cc: tfiga@...omium.org, m.szyprowski@...sung.com,
 ezequiel@...guardiasur.com.ar, p.zabel@...gutronix.de,
 hverkuil-cisco@...all.nl, nicolas@...fresne.ca,
 linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-rockchip@...ts.infradead.org, kernel@...labora.com
Subject: Re: [PATCH v21 3/9] media: test-drivers: Set REQBUFS minimum number
 of buffers

Em Thu, 14 Mar 2024 16:32:20 +0100
Benjamin Gaignard <benjamin.gaignard@...labora.com> escreveu:

> Instead of using 'min_queued_buffers' field to specify the
> minimum number of buffers to be allocated when calling REQBUF
> use 'min_reqbufs_allocation' field which is dedicated to this
> purpose.
> 
> While at it rename vivid_create_queue() parameter.

LGTM.
Reviewed-by: Mauro Carvalho Chehab <mchehab@...nel.org>
> 
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@...labora.com>
> ---
>  drivers/media/test-drivers/vimc/vimc-capture.c | 2 +-
>  drivers/media/test-drivers/vivid/vivid-core.c  | 4 ++--
>  2 files changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/media/test-drivers/vimc/vimc-capture.c b/drivers/media/test-drivers/vimc/vimc-capture.c
> index 2a2d19d23bab..97693561f1e4 100644
> --- a/drivers/media/test-drivers/vimc/vimc-capture.c
> +++ b/drivers/media/test-drivers/vimc/vimc-capture.c
> @@ -432,7 +432,7 @@ static struct vimc_ent_device *vimc_capture_add(struct vimc_device *vimc,
>  	q->mem_ops = vimc_allocator == VIMC_ALLOCATOR_DMA_CONTIG
>  		   ? &vb2_dma_contig_memops : &vb2_vmalloc_memops;
>  	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
> -	q->min_queued_buffers = 2;
> +	q->min_reqbufs_allocation = 2;
>  	q->lock = &vcapture->lock;
>  	q->dev = v4l2_dev->dev;
>  
> diff --git a/drivers/media/test-drivers/vivid/vivid-core.c b/drivers/media/test-drivers/vivid/vivid-core.c
> index 159c72cbb5bf..11b8520d9f57 100644
> --- a/drivers/media/test-drivers/vivid/vivid-core.c
> +++ b/drivers/media/test-drivers/vivid/vivid-core.c
> @@ -861,7 +861,7 @@ static const struct media_device_ops vivid_media_ops = {
>  static int vivid_create_queue(struct vivid_dev *dev,
>  			      struct vb2_queue *q,
>  			      u32 buf_type,
> -			      unsigned int min_queued_buffers,
> +			      unsigned int min_reqbufs_allocation,
>  			      const struct vb2_ops *ops)
>  {
>  	if (buf_type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->multiplanar)
> @@ -898,7 +898,7 @@ static int vivid_create_queue(struct vivid_dev *dev,
>  	q->mem_ops = allocators[dev->inst] == 1 ? &vb2_dma_contig_memops :
>  						  &vb2_vmalloc_memops;
>  	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
> -	q->min_queued_buffers = supports_requests[dev->inst] ? 0 : min_queued_buffers;
> +	q->min_reqbufs_allocation = min_reqbufs_allocation;
>  	q->lock = &dev->mutex;
>  	q->dev = dev->v4l2_dev.dev;
>  	q->supports_requests = supports_requests[dev->inst];



Thanks,
Mauro