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Donenfeld " , Linus Torvalds Subject: [PATCH 08/13] lib/crc/mips: migrate mips-optimized CRC code into lib/crc/ Date: Sun, 1 Jun 2025 15:44:36 -0700 Message-ID: <20250601224441.778374-9-ebiggers@kernel.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250601224441.778374-1-ebiggers@kernel.org> References: <20250601224441.778374-1-ebiggers@kernel.org> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Eric Biggers Move the mips-optimized CRC code from arch/mips/lib/crc* into its new location in lib/crc/mips/, and wire it up in the new way. For a detailed explanation of why this change is being made, see the commit that introduced the new way of integrating arch-specific code into lib/crc/. Signed-off-by: Eric Biggers --- arch/mips/Kconfig | 1 - arch/mips/lib/Makefile | 2 -- lib/crc/Kconfig | 1 + .../lib/crc32-mips.c => lib/crc/mips/crc32.h | 35 ++++--------------- 4 files changed, 8 insertions(+), 31 deletions(-) rename arch/mips/lib/crc32-mips.c => lib/crc/mips/crc32.h (82%) diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index fc0772c1bad4a..31d6975674fd6 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -1995,11 +1995,10 @@ config CPU_MIPSR5 select MIPS_SPRAM config CPU_MIPSR6 bool default y if CPU_MIPS32_R6 || CPU_MIPS64_R6 - select ARCH_HAS_CRC32 select CPU_HAS_RIXI select CPU_HAS_DIEI if !CPU_DIEI_BROKEN select HAVE_ARCH_BITREVERSE select MIPS_ASID_BITS_VARIABLE select MIPS_SPRAM diff --git a/arch/mips/lib/Makefile b/arch/mips/lib/Makefile index 9d75845ef78e1..8c40ffb09c420 100644 --- a/arch/mips/lib/Makefile +++ b/arch/mips/lib/Makefile @@ -14,9 +14,7 @@ obj-$(CONFIG_PCI) += iomap-pci.o lib-$(CONFIG_GENERIC_CSUM) := $(filter-out csum_partial.o, $(lib-y)) obj-$(CONFIG_CPU_GENERIC_DUMP_TLB) += dump_tlb.o obj-$(CONFIG_CPU_R3000) += r3k_dump_tlb.o -obj-$(CONFIG_CRC32_ARCH) += crc32-mips.o - # libgcc-style stuff needed in the kernel obj-y += bswapsi.o bswapdi.o multi3.o diff --git a/lib/crc/Kconfig b/lib/crc/Kconfig index ee320ae19ca85..2d99aab4f838d 100644 --- a/lib/crc/Kconfig +++ b/lib/crc/Kconfig @@ -64,10 +64,11 @@ config CRC32_ARCH bool depends on CRC32 && CRC_OPTIMIZATIONS default y if ARM && KERNEL_MODE_NEON default y if ARM64 default y if LOONGARCH + default y if MIPS && CPU_MIPSR6 config CRC64 tristate help The CRC64 library functions. Select this if your module uses any of diff --git a/arch/mips/lib/crc32-mips.c b/lib/crc/mips/crc32.h similarity index 82% rename from arch/mips/lib/crc32-mips.c rename to lib/crc/mips/crc32.h index 45e4d2c9fbf54..aa7f3228b7db3 100644 --- a/arch/mips/lib/crc32-mips.c +++ b/lib/crc/mips/crc32.h @@ -7,14 +7,10 @@ * Copyright (C) 2014 Linaro Ltd * Copyright (C) 2018 MIPS Tech, LLC */ #include -#include -#include -#include -#include #include #include #ifndef TOOLCHAIN_SUPPORTS_CRC #define _ASM_SET_CRC(OP, SZ, TYPE) \ @@ -62,11 +58,12 @@ do { \ #define CRC32C(crc, value, size) \ _CRC32(crc, value, size, crc32c) static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_crc32); -u32 crc32_le_arch(u32 crc, const u8 *p, size_t len) +#define crc32_le_arch crc32_le_arch +static inline u32 crc32_le_arch(u32 crc, const u8 *p, size_t len) { if (!static_branch_likely(&have_crc32)) return crc32_le_base(crc, p, len); if (IS_ENABLED(CONFIG_64BIT)) { @@ -104,13 +101,13 @@ u32 crc32_le_arch(u32 crc, const u8 *p, size_t len) CRC32(crc, value, b); } return crc; } -EXPORT_SYMBOL(crc32_le_arch); -u32 crc32c_arch(u32 crc, const u8 *p, size_t len) +#define crc32c_arch crc32c_arch +static inline u32 crc32c_arch(u32 crc, const u8 *p, size_t len) { if (!static_branch_likely(&have_crc32)) return crc32c_base(crc, p, len); if (IS_ENABLED(CONFIG_64BIT)) { @@ -147,37 +144,19 @@ u32 crc32c_arch(u32 crc, const u8 *p, size_t len) CRC32C(crc, value, b); } return crc; } -EXPORT_SYMBOL(crc32c_arch); -u32 crc32_be_arch(u32 crc, const u8 *p, size_t len) -{ - return crc32_be_base(crc, p, len); -} -EXPORT_SYMBOL(crc32_be_arch); - -static int __init crc32_mips_init(void) +#define crc32_mod_init_arch crc32_mod_init_arch +static inline void crc32_mod_init_arch(void) { if (cpu_have_feature(cpu_feature(MIPS_CRC32))) static_branch_enable(&have_crc32); - return 0; } -subsys_initcall(crc32_mips_init); -static void __exit crc32_mips_exit(void) -{ -} -module_exit(crc32_mips_exit); - -u32 crc32_optimizations(void) +static inline u32 crc32_optimizations_arch(void) { if (static_key_enabled(&have_crc32)) return CRC32_LE_OPTIMIZATION | CRC32C_OPTIMIZATION; return 0; } -EXPORT_SYMBOL(crc32_optimizations); - -MODULE_AUTHOR("Marcin Nowakowski