From: Eric Biggers <ebiggers@google.com>
Date: Sat, 10 May 2025 03:59:59 +0000 (-0700)
Subject: lib/crc: make arch-optimized code use subsys_initcall
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=648c7fb16f609c53d2659fefb5088af619485ab4;p=users%2Fwilly%2Fxarray.git

lib/crc: make arch-optimized code use subsys_initcall

Make the architecture-optimized CRC code do its CPU feature checks in
subsys_initcalls instead of arch_initcalls.  This makes it consistent
with arch/*/lib/crypto/ and ensures that it runs after initcalls that
possibly could be a prerequisite for kernel-mode FPU, such as x86's
xfd_update_static_branch() and loongarch's init_euen_mask().

Note: as far as I can tell, x86's xfd_update_static_branch() isn't
*actually* needed for kernel-mode FPU.  loongarch's init_euen_mask() is
needed to enable save/restore of the vector registers, but loongarch
doesn't yet have any CRC or crypto code that uses vector registers
anyway.  Regardless, let's be consistent with arch/*/lib/crypto/ and
robust against any potential future dependency on an arch_initcall.

Link: https://lore.kernel.org/r/20250510035959.87995-1-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
---

diff --git a/arch/arm/lib/crc-t10dif.c b/arch/arm/lib/crc-t10dif.c
index 382437094bdd..1093f8ec13b0 100644
--- a/arch/arm/lib/crc-t10dif.c
+++ b/arch/arm/lib/crc-t10dif.c
@@ -60,7 +60,7 @@ static int __init crc_t10dif_arm_init(void)
 	}
 	return 0;
 }
-arch_initcall(crc_t10dif_arm_init);
+subsys_initcall(crc_t10dif_arm_init);
 
 static void __exit crc_t10dif_arm_exit(void)
 {
diff --git a/arch/arm/lib/crc32.c b/arch/arm/lib/crc32.c
index 7ef7db9c0de7..f2bef8849c7c 100644
--- a/arch/arm/lib/crc32.c
+++ b/arch/arm/lib/crc32.c
@@ -103,7 +103,7 @@ static int __init crc32_arm_init(void)
 		static_branch_enable(&have_pmull);
 	return 0;
 }
-arch_initcall(crc32_arm_init);
+subsys_initcall(crc32_arm_init);
 
 static void __exit crc32_arm_exit(void)
 {
diff --git a/arch/arm64/lib/crc-t10dif.c b/arch/arm64/lib/crc-t10dif.c
index 99d0b5668a28..c2ffe4fdb59d 100644
--- a/arch/arm64/lib/crc-t10dif.c
+++ b/arch/arm64/lib/crc-t10dif.c
@@ -61,7 +61,7 @@ static int __init crc_t10dif_arm64_init(void)
 	}
 	return 0;
 }
-arch_initcall(crc_t10dif_arm64_init);
+subsys_initcall(crc_t10dif_arm64_init);
 
 static void __exit crc_t10dif_arm64_exit(void)
 {
diff --git a/arch/loongarch/lib/crc32-loongarch.c b/arch/loongarch/lib/crc32-loongarch.c
index 8e6d1f517e73..b37cd8537b45 100644
--- a/arch/loongarch/lib/crc32-loongarch.c
+++ b/arch/loongarch/lib/crc32-loongarch.c
@@ -114,7 +114,7 @@ static int __init crc32_loongarch_init(void)
 		static_branch_enable(&have_crc32);
 	return 0;
 }
-arch_initcall(crc32_loongarch_init);
+subsys_initcall(crc32_loongarch_init);
 
 static void __exit crc32_loongarch_exit(void)
 {
diff --git a/arch/mips/lib/crc32-mips.c b/arch/mips/lib/crc32-mips.c
index 84df361e7181..45e4d2c9fbf5 100644
--- a/arch/mips/lib/crc32-mips.c
+++ b/arch/mips/lib/crc32-mips.c
@@ -163,7 +163,7 @@ static int __init crc32_mips_init(void)
 		static_branch_enable(&have_crc32);
 	return 0;
 }
-arch_initcall(crc32_mips_init);
+subsys_initcall(crc32_mips_init);
 
 static void __exit crc32_mips_exit(void)
 {
diff --git a/arch/powerpc/lib/crc-t10dif.c b/arch/powerpc/lib/crc-t10dif.c
index ddd5c4088f50..4253842cc50d 100644
--- a/arch/powerpc/lib/crc-t10dif.c
+++ b/arch/powerpc/lib/crc-t10dif.c
@@ -71,7 +71,7 @@ static int __init crc_t10dif_powerpc_init(void)
 		static_branch_enable(&have_vec_crypto);
 	return 0;
 }
-arch_initcall(crc_t10dif_powerpc_init);
+subsys_initcall(crc_t10dif_powerpc_init);
 
 static void __exit crc_t10dif_powerpc_exit(void)
 {
diff --git a/arch/powerpc/lib/crc32.c b/arch/powerpc/lib/crc32.c
index 42f2dd3c85dd..77e5a37006f0 100644
--- a/arch/powerpc/lib/crc32.c
+++ b/arch/powerpc/lib/crc32.c
@@ -72,7 +72,7 @@ static int __init crc32_powerpc_init(void)
 		static_branch_enable(&have_vec_crypto);
 	return 0;
 }
-arch_initcall(crc32_powerpc_init);
+subsys_initcall(crc32_powerpc_init);
 
 static void __exit crc32_powerpc_exit(void)
 {
diff --git a/arch/sparc/lib/crc32.c b/arch/sparc/lib/crc32.c
index 428fd5588e93..40d4720a42a1 100644
--- a/arch/sparc/lib/crc32.c
+++ b/arch/sparc/lib/crc32.c
@@ -74,7 +74,7 @@ static int __init crc32_sparc_init(void)
 	pr_info("Using sparc64 crc32c opcode optimized CRC32C implementation\n");
 	return 0;
 }
-arch_initcall(crc32_sparc_init);
+subsys_initcall(crc32_sparc_init);
 
 static void __exit crc32_sparc_exit(void)
 {
diff --git a/arch/x86/lib/crc-t10dif.c b/arch/x86/lib/crc-t10dif.c
index d073b3678edc..db7ce59c31ac 100644
--- a/arch/x86/lib/crc-t10dif.c
+++ b/arch/x86/lib/crc-t10dif.c
@@ -29,7 +29,7 @@ static int __init crc_t10dif_x86_init(void)
 	}
 	return 0;
 }
-arch_initcall(crc_t10dif_x86_init);
+subsys_initcall(crc_t10dif_x86_init);
 
 static void __exit crc_t10dif_x86_exit(void)
 {
diff --git a/arch/x86/lib/crc32.c b/arch/x86/lib/crc32.c
index e6a6285cfca8..d09343e2cea9 100644
--- a/arch/x86/lib/crc32.c
+++ b/arch/x86/lib/crc32.c
@@ -88,7 +88,7 @@ static int __init crc32_x86_init(void)
 	}
 	return 0;
 }
-arch_initcall(crc32_x86_init);
+subsys_initcall(crc32_x86_init);
 
 static void __exit crc32_x86_exit(void)
 {
diff --git a/arch/x86/lib/crc64.c b/arch/x86/lib/crc64.c
index 1214ee726c16..351a09f5813e 100644
--- a/arch/x86/lib/crc64.c
+++ b/arch/x86/lib/crc64.c
@@ -39,7 +39,7 @@ static int __init crc64_x86_init(void)
 	}
 	return 0;
 }
-arch_initcall(crc64_x86_init);
+subsys_initcall(crc64_x86_init);
 
 static void __exit crc64_x86_exit(void)
 {