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| author | Geliang Tang <geliangtang@163.com> | 2016-02-18 22:04:22 +0800 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2016-06-02 10:59:31 -0700 |
| commit | 8cfc8ddc99df9509a46043b14af81f5c6a223eab (patch) | |
| tree | fd5bb1b71a1c8418b672ccfa039babf84251b95a /fs/pstore/Kconfig | |
| parent | 235f6d157d43a761052e643b8799f86fdc87b47f (diff) | |
| download | linux-8cfc8ddc99df9509a46043b14af81f5c6a223eab.tar.gz linux-8cfc8ddc99df9509a46043b14af81f5c6a223eab.tar.bz2 linux-8cfc8ddc99df9509a46043b14af81f5c6a223eab.zip | |
pstore: add lzo/lz4 compression support
Like zlib compression in pstore, this patch added lzo and lz4
compression support so that users can have more options and better
compression ratio.
The original code treats the compressed data together with the
uncompressed ECC correction notice by using zlib decompress. The
ECC correction notice is missing in the decompression process. The
treatment also makes lzo and lz4 not working. So I treat them
separately by using pstore_decompress() to treat the compressed
data, and memcpy() to treat the uncompressed ECC correction notice.
Signed-off-by: Geliang Tang <geliangtang@163.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'fs/pstore/Kconfig')
| -rw-r--r-- | fs/pstore/Kconfig | 31 |
1 files changed, 29 insertions, 2 deletions
diff --git a/fs/pstore/Kconfig b/fs/pstore/Kconfig index 360ae43f590c..be40813eff52 100644 --- a/fs/pstore/Kconfig +++ b/fs/pstore/Kconfig @@ -1,8 +1,6 @@ config PSTORE tristate "Persistent store support" default n - select ZLIB_DEFLATE - select ZLIB_INFLATE help This option enables generic access to platform level persistent storage via "pstore" filesystem that can @@ -14,6 +12,35 @@ config PSTORE If you don't have a platform persistent store driver, say N. +choice + prompt "Choose compression algorithm" + depends on PSTORE + default PSTORE_ZLIB_COMPRESS + help + This option chooses compression algorithm. + +config PSTORE_ZLIB_COMPRESS + bool "ZLIB" + select ZLIB_DEFLATE + select ZLIB_INFLATE + help + This option enables ZLIB compression algorithm support. + +config PSTORE_LZO_COMPRESS + bool "LZO" + select LZO_COMPRESS + select LZO_DECOMPRESS + help + This option enables LZO compression algorithm support. + +config PSTORE_LZ4_COMPRESS + bool "LZ4" + select LZ4_COMPRESS + select LZ4_DECOMPRESS + help + This option enables LZ4 compression algorithm support. +endchoice + config PSTORE_CONSOLE bool "Log kernel console messages" depends on PSTORE |