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hcl 7be3fd486c init from android-12.1.0_r8		2023-01-09 17:11:35 +08:00
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test	init from android-12.1.0_r8	2023-01-09 17:11:35 +08:00
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Makefile	init from android-12.1.0_r8	2023-01-09 17:11:35 +08:00
README.md	init from android-12.1.0_r8	2023-01-09 17:11:35 +08:00
btrfs-benchmark.sh	init from android-12.1.0_r8	2023-01-09 17:11:35 +08:00
btrfs-extract-benchmark.sh	init from android-12.1.0_r8	2023-01-09 17:11:35 +08:00
decompress_sources.h	init from android-12.1.0_r8	2023-01-09 17:11:35 +08:00
linux.mk	init from android-12.1.0_r8	2023-01-09 17:11:35 +08:00
linux_zstd.h	init from android-12.1.0_r8	2023-01-09 17:11:35 +08:00
mem.h	init from android-12.1.0_r8	2023-01-09 17:11:35 +08:00
squashfs-benchmark.sh	init from android-12.1.0_r8	2023-01-09 17:11:35 +08:00
zstd_compress_module.c	init from android-12.1.0_r8	2023-01-09 17:11:35 +08:00
zstd_decompress_module.c	init from android-12.1.0_r8	2023-01-09 17:11:35 +08:00
zstd_deps.h	init from android-12.1.0_r8	2023-01-09 17:11:35 +08:00

README.md

Zstd in the Linux Kernel

This directory contains the scripts needed to transform upstream zstd into the version imported into the kernel. All the transforms are automated and tested by our continuous integration.

Upgrading Zstd in the Linux Kernel

cd into this directory.
Run make libzstd and read the output. Make sure that all the diffs printed and changes made by the script are correct.
Run make test and ensure that it passes.
Import zstd into the Linux Kernel make import LINUX=/path/to/linux/repo
Inspect the diff for sanity.
Check the Linux Kernel history for zstd. If any patches were made to the kernel version of zstd, but not to upstream zstd, then port them upstream if necessary.
Test the diff. Benchmark if necessary. Make sure to test multiple architectures: At least x86, i386, and arm.
Submit the patch to the LKML.