diff options
Diffstat (limited to 'drivers/block/zram/Kconfig')
| -rw-r--r-- | drivers/block/zram/Kconfig | 77 |
1 files changed, 62 insertions, 15 deletions
diff --git a/drivers/block/zram/Kconfig b/drivers/block/zram/Kconfig index eacf1cba7bf4..6aea609b795c 100644 --- a/drivers/block/zram/Kconfig +++ b/drivers/block/zram/Kconfig @@ -2,8 +2,6 @@ config ZRAM tristate "Compressed RAM block device support" depends on BLOCK && SYSFS && MMU - depends on HAVE_ZSMALLOC - depends on CRYPTO_LZO || CRYPTO_ZSTD || CRYPTO_LZ4 || CRYPTO_LZ4HC || CRYPTO_842 select ZSMALLOC help Creates virtual block devices called /dev/zramX (X = 0, 1, ...). @@ -16,6 +14,49 @@ config ZRAM See Documentation/admin-guide/blockdev/zram.rst for more information. +config ZRAM_BACKEND_LZ4 + bool "lz4 compression support" + depends on ZRAM + select LZ4_COMPRESS + select LZ4_DECOMPRESS + +config ZRAM_BACKEND_LZ4HC + bool "lz4hc compression support" + depends on ZRAM + select LZ4HC_COMPRESS + select LZ4_DECOMPRESS + +config ZRAM_BACKEND_ZSTD + bool "zstd compression support" + depends on ZRAM + select ZSTD_COMPRESS + select ZSTD_DECOMPRESS + +config ZRAM_BACKEND_DEFLATE + bool "deflate compression support" + depends on ZRAM + select ZLIB_DEFLATE + select ZLIB_INFLATE + +config ZRAM_BACKEND_842 + bool "842 compression support" + depends on ZRAM + select 842_COMPRESS + select 842_DECOMPRESS + +config ZRAM_BACKEND_FORCE_LZO + depends on ZRAM + def_bool !ZRAM_BACKEND_LZ4 && !ZRAM_BACKEND_LZ4HC && \ + !ZRAM_BACKEND_ZSTD && !ZRAM_BACKEND_DEFLATE && \ + !ZRAM_BACKEND_842 + +config ZRAM_BACKEND_LZO + bool "lzo and lzo-rle compression support" if !ZRAM_BACKEND_FORCE_LZO + depends on ZRAM + default ZRAM_BACKEND_FORCE_LZO + select LZO_COMPRESS + select LZO_DECOMPRESS + choice prompt "Default zram compressor" default ZRAM_DEF_COMP_LZORLE @@ -23,38 +64,44 @@ choice config ZRAM_DEF_COMP_LZORLE bool "lzo-rle" - depends on CRYPTO_LZO + depends on ZRAM_BACKEND_LZO -config ZRAM_DEF_COMP_ZSTD - bool "zstd" - depends on CRYPTO_ZSTD +config ZRAM_DEF_COMP_LZO + bool "lzo" + depends on ZRAM_BACKEND_LZO config ZRAM_DEF_COMP_LZ4 bool "lz4" - depends on CRYPTO_LZ4 - -config ZRAM_DEF_COMP_LZO - bool "lzo" - depends on CRYPTO_LZO + depends on ZRAM_BACKEND_LZ4 config ZRAM_DEF_COMP_LZ4HC bool "lz4hc" - depends on CRYPTO_LZ4HC + depends on ZRAM_BACKEND_LZ4HC + +config ZRAM_DEF_COMP_ZSTD + bool "zstd" + depends on ZRAM_BACKEND_ZSTD + +config ZRAM_DEF_COMP_DEFLATE + bool "deflate" + depends on ZRAM_BACKEND_DEFLATE config ZRAM_DEF_COMP_842 bool "842" - depends on CRYPTO_842 + depends on ZRAM_BACKEND_842 endchoice config ZRAM_DEF_COMP string default "lzo-rle" if ZRAM_DEF_COMP_LZORLE - default "zstd" if ZRAM_DEF_COMP_ZSTD - default "lz4" if ZRAM_DEF_COMP_LZ4 default "lzo" if ZRAM_DEF_COMP_LZO + default "lz4" if ZRAM_DEF_COMP_LZ4 default "lz4hc" if ZRAM_DEF_COMP_LZ4HC + default "zstd" if ZRAM_DEF_COMP_ZSTD + default "deflate" if ZRAM_DEF_COMP_DEFLATE default "842" if ZRAM_DEF_COMP_842 + default "unset-value" config ZRAM_WRITEBACK bool "Write back incompressible or idle page to backing device" |