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authorBreno Leitao <leitao@debian.org>2026-08-05 07:52:36 -0700
committerTejun Heo <tj@kernel.org>2026-08-10 11:47:20 -1000
commita5bde5d8fde8a8cb28e59a672d5ddc5b9c1e7656 (patch)
tree39f5b258386e1127d253d293194e9a2991bf3c34 /lib/crc/Kconfig
downloadlinux-stable-a5bde5d8fde8a8cb28e59a672d5ddc5b9c1e7656.tar.gz
linux-stable-a5bde5d8fde8a8cb28e59a672d5ddc5b9c1e7656.zip
workqueue: skip the node_nr_active update for non-unbound workqueuesgrafted
apply_wqattrs_commit() updates node_nr_active->max unconditionally. wq->node_nr_active[] is only allocated for unbound workqueues, so guard the call before per-cpu workqueues start using this path. No functional change: only unbound workqueues reach apply_wqattrs_*() today. Signed-off-by: Breno Leitao <leitao@debian.org> Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'lib/crc/Kconfig')
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1 files changed, 130 insertions, 0 deletions
diff --git a/lib/crc/Kconfig b/lib/crc/Kconfig
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+# SPDX-License-Identifier: GPL-2.0-only
+
+# Kconfig for the kernel's cyclic redundancy check (CRC) library code
+
+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 CRC8
+ tristate
+ help
+ The CRC8 library functions. Select this if your module uses any of
+ the functions from <linux/crc8.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_CCITT
+ tristate
+ help
+ The CRC-CCITT library functions. Select this if your module uses any
+ of the functions from <linux/crc-ccitt.h>.
+
+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 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 CRC_T10DIF_ARCH
+ bool
+ depends on CRC_T10DIF && CRC_OPTIMIZATIONS
+ default y if ARM && KERNEL_MODE_NEON
+ default y if ARM64
+ default y if PPC64 && ALTIVEC
+ default y if RISCV && RISCV_ISA_ZBC
+ default y if X86
+
+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 CRC32_ARCH
+ bool
+ depends on CRC32 && CRC_OPTIMIZATIONS
+ default y if ARM && KERNEL_MODE_NEON
+ default y if ARM64
+ default y if LOONGARCH && 64BIT
+ default y if MIPS && CPU_MIPSR6
+ default y if PPC64 && ALTIVEC
+ default y if RISCV && RISCV_ISA_ZBC
+ default y if S390
+ default y if SPARC64
+ default y if X86
+
+config CRC64
+ tristate
+ help
+ The CRC64 library functions. Select this if your module uses any of
+ the functions from <linux/crc64.h>.
+
+config CRC64_ARCH
+ bool
+ depends on CRC64 && CRC_OPTIMIZATIONS
+ default y if ARM && KERNEL_MODE_NEON && !CPU_BIG_ENDIAN
+ default y if ARM64
+ default y if RISCV && RISCV_ISA_ZBC && 64BIT
+ default y if X86_64
+
+config CRC_OPTIMIZATIONS
+ bool "Enable optimized CRC implementations" if EXPERT
+ depends on !UML
+ default y
+ help
+ Disabling this option reduces code size slightly by disabling the
+ architecture-optimized implementations of any CRC variants that are
+ enabled. CRC checksumming performance may get much slower.
+
+ Keep this enabled unless you're really trying to minimize the size of
+ the kernel.
+
+config CRC_KUNIT_TEST
+ tristate "KUnit tests for CRC functions" if !KUNIT_ALL_TESTS
+ depends on KUNIT && (CRC7 || CRC16 || CRC_T10DIF || CRC32 || CRC64)
+ default KUNIT_ALL_TESTS
+ help
+ 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.