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lib/crc: document all the CRC library kconfig options

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Previous commits removed all the original CRC kconfig help text, since
it was oriented towards people configuring the kernel, and the options
are no longer user-selectable.  However, it's still useful for there to
be help text for kernel developers.  Add this.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20250401221600.24878-7-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
This commit is contained in:
Eric Biggers 2025-04-01 15:15:59 -07:00
parent a0d55dd740
commit 31ab49a99f
1 changed files with 27 additions and 0 deletions
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27
lib/Kconfig
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@ -140,12 +140,21 @@ source "lib/crypto/Kconfig"
config CRC_CCITT
tristate
help
The CRC-CCITT library functions. Select this if your module uses any
of the functions from <linux/crc-ccitt.h>.
config CRC16
tristate
help
The CRC16 library functions. Select this if your module uses any of
the functions from <linux/crc16.h>.
config CRC_T10DIF
tristate
help
The CRC-T10DIF library functions. Select this if your module uses
any of the functions from <linux/crc-t10dif.h>.
config ARCH_HAS_CRC_T10DIF
bool
@ -156,10 +165,16 @@ config CRC_T10DIF_ARCH
config CRC_ITU_T
tristate
help
The CRC-ITU-T library functions. Select this if your module uses
any of the functions from <linux/crc-itu-t.h>.
config CRC32
tristate
select BITREVERSE
help
The CRC32 library functions. Select this if your module uses any of
the functions from <linux/crc32.h> or <linux/crc32c.h>.
config ARCH_HAS_CRC32
bool
@ -170,6 +185,9 @@ config CRC32_ARCH
config CRC64
tristate
help
The CRC64 library functions. Select this if your module uses any of
the functions from <linux/crc64.h>.
config ARCH_HAS_CRC64
bool
@ -180,9 +198,15 @@ config CRC64_ARCH
config CRC4
tristate
help
The CRC4 library functions. Select this if your module uses any of
the functions from <linux/crc4.h>.
config CRC7
tristate
help
The CRC7 library functions. Select this if your module uses any of
the functions from <linux/crc7.h>.
config LIBCRC32C
tristate
@ -193,6 +217,9 @@ config LIBCRC32C
config CRC8
tristate
help
The CRC8 library functions. Select this if your module uses any of
the functions from <linux/crc8.h>.
config CRC_OPTIMIZATIONS
bool "Enable optimized CRC implementations" if EXPERT