[U-Boot] [PATCH v2 0/3] fs: btrfs: Add zstd decompression support

[Marek Behún]

Hi, this is v2. The previous cover letter said:

zstd has been enabled in kernel btrfs driver for over a year, it is time
we support this also in U-Boot.

This xxhash and zstd library are imported from kernel with minimal changes.

This was tested on ARM target (Turris Omnia).

Marek

Changes since v1:
 - changed xxhash and zstd sources to use SPDX license identifiers

Marek Behún (3):
  lib: Add xxhash support
  lib: add Zstandard decompression support
  fs: btrfs: add zstd decompression support

 fs/btrfs/Kconfig          |    1 +
 fs/btrfs/btrfs_tree.h     |    5 +-
 fs/btrfs/compression.c    |   59 +
 include/linux/xxhash.h    |  229 ++++
 include/linux/zstd.h      | 1147 +++++++++++++++++
 lib/Kconfig               |   15 +
 lib/Makefile              |    2 +
 lib/xxhash.c              |  467 +++++++
 lib/zstd/Makefile         |    4 +
 lib/zstd/bitstream.h      |  344 +++++
 lib/zstd/decompress.c     | 2515 +++++++++++++++++++++++++++++++++++++
 lib/zstd/entropy_common.c |  213 ++++
 lib/zstd/error_private.h  |   43 +
 lib/zstd/fse.h            |  545 ++++++++
 lib/zstd/fse_decompress.c |  302 +++++
 lib/zstd/huf.h            |  182 +++
 lib/zstd/huf_decompress.c |  930 ++++++++++++++
 lib/zstd/mem.h            |  142 +++
 lib/zstd/zstd_common.c    |   65 +
 lib/zstd/zstd_internal.h  |  253 ++++
 lib/zstd/zstd_opt.h       | 1004 +++++++++++++++
 21 files changed, 8465 insertions(+), 2 deletions(-)
 create mode 100644 include/linux/xxhash.h
 create mode 100644 include/linux/zstd.h
 create mode 100644 lib/xxhash.c
 create mode 100644 lib/zstd/Makefile
 create mode 100644 lib/zstd/bitstream.h
 create mode 100644 lib/zstd/decompress.c
 create mode 100644 lib/zstd/entropy_common.c
 create mode 100644 lib/zstd/error_private.h
 create mode 100644 lib/zstd/fse.h
 create mode 100644 lib/zstd/fse_decompress.c
 create mode 100644 lib/zstd/huf.h
 create mode 100644 lib/zstd/huf_decompress.c
 create mode 100644 lib/zstd/mem.h
 create mode 100644 lib/zstd/zstd_common.c
 create mode 100644 lib/zstd/zstd_internal.h
 create mode 100644 lib/zstd/zstd_opt.h

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2.21.0