[PATCH 6.18 2/8] lib/crc: tests: Add CRC_ENABLE_ALL_FOR_KUNIT

[Eric Biggers <ebiggers@kernel.org>]

commit cdf22aeaad8430905c3aa3b3d0f2686c65395c22 upstream.

Now that crc_kunit uses the standard "depends on" pattern, enabling the
full set of CRC tests is a bit difficult, mainly due to CRC7 being
rarely used.  Add a kconfig option to make it easier.  It is visible
only when KUNIT, so hopefully the extra prompt won't be too annoying.

Link: https://lore.kernel.org/r/20260306033557.250499-3-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
---
 lib/crc/Kconfig | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/lib/crc/Kconfig b/lib/crc/Kconfig
index 9ddfd1a297576..cca228879bb5a 100644
--- a/lib/crc/Kconfig
+++ b/lib/crc/Kconfig
@@ -105,10 +105,24 @@ config CRC_KUNIT_TEST
 	  Unit tests for the CRC library functions.
 
 	  This is intended to help people writing architecture-specific
 	  optimized versions.  If unsure, say N.
 
+config CRC_ENABLE_ALL_FOR_KUNIT
+	tristate "Enable all CRC functions for KUnit test"
+	depends on KUNIT
+	select CRC7
+	select CRC16
+	select CRC_T10DIF
+	select CRC32
+	select CRC64
+	help
+	  Enable all CRC functions that have test code in CRC_KUNIT_TEST.
+
+	  Enable this only if you'd like the CRC KUnit test suite to test all
+	  the CRC variants, even ones that wouldn't otherwise need to be built.
+
 config CRC_BENCHMARK
 	bool "Benchmark for the CRC functions"
 	depends on CRC_KUNIT_TEST
 	help
 	  Include benchmarks in the KUnit test suite for the CRC functions.
-- 
2.53.0