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Android 9 auto kernel compression

Question asked by Amit Kulkarni on May 28, 2020
Latest reply on May 31, 2020 by Amit Kulkarni

Dear team,

 

We are working on imx8qm-mek platform running on Android 9 automotive. I was going through menuconfig and i found that none of the compression methods are enabled :

HAVE_KERNEL_GZIP || HAVE_KERNEL_BZIP2 || HAVE_KERNEL_LZMA || HAVE_KERNEL_XZ || HAVE_KERNEL_LZO || HAVE_KERNEL_LZ4

I checked these configs and i found (n) to each of them. 

 

What does this mean ? 

How can change compression method ?

How can i use decompressed kernel instead of compressed one ?

Is it good idea to use decompressed kernel for boot time optimization ?

 

Request you to provide some light here. 

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