[PATCH] kernel/5.10: disable CONFIG_DEVTMPFS{,_MOUNT}

[Daniel Golle]

On Wed, Jan 05, 2022 at 03:51:09PM +0000, Rui Salvaterra wrote:
> We rely on procd to create/populate /dev for us. These can be safely disabled.

NACK. Disabling this will afaik break LXC and containers relying on it.
We could enable it selectively on !SMALL_FLASH instead, to safe space
on targets where anyway there are no resources for containers.

> 
> Signed-off-by: Rui Salvaterra <rsalvaterra at gmail.com>
> ---
>  target/linux/archs38/config-5.10              | 1 -
>  target/linux/layerscape/armv7/config-5.10     | 2 --
>  target/linux/layerscape/armv8_64b/config-5.10 | 2 --
>  target/linux/mediatek/mt7622/config-5.10      | 2 --
>  target/linux/oxnas/config-5.10                | 2 --
>  target/linux/rockchip/armv8/config-5.10       | 2 --
>  6 files changed, 11 deletions(-)
> 
> diff --git a/target/linux/archs38/config-5.10 b/target/linux/archs38/config-5.10
> index 5ba3877a64..b082a47331 100644
> --- a/target/linux/archs38/config-5.10
> +++ b/target/linux/archs38/config-5.10
> @@ -84,7 +84,6 @@ CONFIG_CRYPTO_RNG=y
>  CONFIG_CRYPTO_RNG2=y
>  CONFIG_CRYPTO_RNG_DEFAULT=y
>  CONFIG_CRYPTO_SHA256=y
> -CONFIG_DEVTMPFS=y
>  CONFIG_DMADEVICES=y
>  CONFIG_DMA_DIRECT_REMAP=y
>  CONFIG_DMA_ENGINE=y
> diff --git a/target/linux/layerscape/armv7/config-5.10 b/target/linux/layerscape/armv7/config-5.10
> index 0ec201030f..dd97d67cba 100644
> --- a/target/linux/layerscape/armv7/config-5.10
> +++ b/target/linux/layerscape/armv7/config-5.10
> @@ -170,8 +170,6 @@ CONFIG_DETECT_HUNG_TASK=y
>  # CONFIG_DEVFREQ_GOV_SIMPLE_ONDEMAND is not set
>  # CONFIG_DEVFREQ_GOV_USERSPACE is not set
>  # CONFIG_DEVFREQ_THERMAL is not set
> -CONFIG_DEVTMPFS=y
> -CONFIG_DEVTMPFS_MOUNT=y
>  CONFIG_DMADEVICES=y
>  CONFIG_DMA_CMA=y
>  CONFIG_DMA_ENGINE=y
> diff --git a/target/linux/layerscape/armv8_64b/config-5.10 b/target/linux/layerscape/armv8_64b/config-5.10
> index aa4be18f05..03c85a5aef 100644
> --- a/target/linux/layerscape/armv8_64b/config-5.10
> +++ b/target/linux/layerscape/armv8_64b/config-5.10
> @@ -204,8 +204,6 @@ CONFIG_DECOMPRESS_LZMA=y
>  CONFIG_DECOMPRESS_LZO=y
>  CONFIG_DECOMPRESS_XZ=y
>  CONFIG_DETECT_HUNG_TASK=y
> -CONFIG_DEVTMPFS=y
> -CONFIG_DEVTMPFS_MOUNT=y
>  CONFIG_DIMLIB=y
>  CONFIG_DMADEVICES=y
>  CONFIG_DMATEST=y
> diff --git a/target/linux/mediatek/mt7622/config-5.10 b/target/linux/mediatek/mt7622/config-5.10
> index da1b283f70..946cab7738 100644
> --- a/target/linux/mediatek/mt7622/config-5.10
> +++ b/target/linux/mediatek/mt7622/config-5.10
> @@ -134,8 +134,6 @@ CONFIG_CRYPTO_SHA256=y
>  CONFIG_CRYPTO_ZSTD=y
>  CONFIG_DCACHE_WORD_ACCESS=y
>  CONFIG_DEBUG_MISC=y
> -CONFIG_DEVTMPFS=y
> -CONFIG_DEVTMPFS_MOUNT=y
>  CONFIG_DIMLIB=y
>  CONFIG_DMADEVICES=y
>  CONFIG_DMATEST=y
> diff --git a/target/linux/oxnas/config-5.10 b/target/linux/oxnas/config-5.10
> index b0e4789d1e..93fbf5386d 100644
> --- a/target/linux/oxnas/config-5.10
> +++ b/target/linux/oxnas/config-5.10
> @@ -117,8 +117,6 @@ CONFIG_DECOMPRESS_LZ4=y
>  CONFIG_DECOMPRESS_LZMA=y
>  CONFIG_DECOMPRESS_LZO=y
>  CONFIG_DECOMPRESS_XZ=y
> -CONFIG_DEVTMPFS=y
> -CONFIG_DEVTMPFS_MOUNT=y
>  CONFIG_DMA_CMA=y
>  CONFIG_DMA_REMAP=y
>  CONFIG_DNOTIFY=y
> diff --git a/target/linux/rockchip/armv8/config-5.10 b/target/linux/rockchip/armv8/config-5.10
> index 9769bab72d..1063489dc6 100644
> --- a/target/linux/rockchip/armv8/config-5.10
> +++ b/target/linux/rockchip/armv8/config-5.10
> @@ -167,8 +167,6 @@ CONFIG_DEVFREQ_GOV_USERSPACE=y
>  # CONFIG_DEVFREQ_THERMAL is not set
>  CONFIG_DEVMEM=y
>  # CONFIG_DEVPORT is not set
> -CONFIG_DEVTMPFS=y
> -CONFIG_DEVTMPFS_MOUNT=y
>  CONFIG_DMADEVICES=y
>  CONFIG_DMA_CMA=y
>  CONFIG_DMA_DIRECT_REMAP=y
> -- 
> 2.34.1
> 
> 
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