raid6: remove __KERNEL__ ifdefs

With the test code ported to kernel space, none of this is required. Link: https://lore.kernel.org/20260518051804.462141-3-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Ard Biesheuvel <ardb@kernel.org> Tested-by: Ard Biesheuvel <ardb@kernel.org> # kunit only on arm64 Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Alexandre Ghiti <alex@ghiti.fr> Cc: Arnd Bergmann <arnd@arndb.de> Cc: "Borislav Petkov (AMD)" <bp@alien8.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Chris Mason <clm@fb.com> Cc: Christian Borntraeger <borntraeger@linux.ibm.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: David Sterba <dsterba@suse.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Li Nan <linan122@huawei.com> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Song Liu <song@kernel.org> Cc: Sven Schnelle <svens@linux.ibm.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: WANG Xuerui <kernel@xen0n.name> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
author: Christoph Hellwig <hch@lst.de> 2026-05-18 07:17:45 +0200
committer: Andrew Morton <akpm@linux-foundation.org> 2026-05-28 21:24:52 -0700
commit: 3d6beb659ddf0664612bafacb0bd9030ba6ec7e6 (patch)
tree: b9afe73a17a11e855cd0b58f3b180d1409066369 /lib
parent: c4697486fc232e821a33191d809d0ac3bb600027 (diff)
download: ath-3d6beb659ddf0664612bafacb0bd9030ba6ec7e6.tar.gz
19 files changed, 15 insertions, 186 deletions
diff --git a/lib/raid6/algos.c b/lib/raid6/algos.c
index 5a9f4882e18dd..985c60bb00a41 100644
--- a/lib/raid6/algos.c
+++ b/lib/raid6/algos.c
@@ -12,13 +12,8 @@
  */
 
 #include <linux/raid/pq.h>
-#ifndef __KERNEL__
-#include <sys/mman.h>
-#include <stdio.h>
-#else
 #include <linux/module.h>
 #include <linux/gfp.h>
-#endif
 #include <kunit/visibility.h>
 
 struct raid6_calls raid6_call;
@@ -123,14 +118,7 @@ const struct raid6_recov_calls *const raid6_recov_algos[] = {
 };
 EXPORT_SYMBOL_IF_KUNIT(raid6_recov_algos);
 
-#ifdef __KERNEL__
 #define RAID6_TIME_JIFFIES_LG2	4
-#else
-/* Need more time to be stable in userspace */
-#define RAID6_TIME_JIFFIES_LG2	9
-#define time_before(x, y) ((x) < (y))
-#endif
-
 #define RAID6_TEST_DISKS	8
 #define RAID6_TEST_DISKS_ORDER	3
 
diff --git a/lib/raid6/altivec.uc b/lib/raid6/altivec.uc
index d20ed0d114111..2c59963e58f9b 100644
--- a/lib/raid6/altivec.uc
+++ b/lib/raid6/altivec.uc
@@ -27,10 +27,8 @@
 #ifdef CONFIG_ALTIVEC
 
 #include <altivec.h>
-#ifdef __KERNEL__
-# include <asm/cputable.h>
-# include <asm/switch_to.h>
-#endif /* __KERNEL__ */
+#include <asm/cputable.h>
+#include <asm/switch_to.h>
 
 /*
  * This is the C data type to use.  We use a vector of
@@ -113,11 +111,7 @@ int raid6_have_altivec(void);
 int raid6_have_altivec(void)
 {
 	/* This assumes either all CPUs have Altivec or none does */
-# ifdef __KERNEL__
 	return cpu_has_feature(CPU_FTR_ALTIVEC);
-# else
-	return 1;
-# endif
 }
 #endif
 
diff --git a/lib/raid6/avx2.c b/lib/raid6/avx2.c
index 059024234dce1..a1a5213918af8 100644
--- a/lib/raid6/avx2.c
+++ b/lib/raid6/avx2.c
@@ -14,7 +14,7 @@
  */
 
 #include <linux/raid/pq.h>
-#include "x86.h"
+#include <asm/fpu/api.h>
 
 static const struct raid6_avx2_constants {
 	u64 x1d[4];
diff --git a/lib/raid6/avx512.c b/lib/raid6/avx512.c
index 009bd0adeebf0..874998bcd7d78 100644
--- a/lib/raid6/avx512.c
+++ b/lib/raid6/avx512.c
@@ -18,7 +18,7 @@
  */
 
 #include <linux/raid/pq.h>
-#include "x86.h"
+#include <asm/fpu/api.h>
 
 static const struct raid6_avx512_constants {
 	u64 x1d[8];
diff --git a/lib/raid6/loongarch.h b/lib/raid6/loongarch.h
deleted file mode 100644
index acfc33ce70562..0000000000000
--- a/lib/raid6/loongarch.h
+++ /dev/null
@@ -1,38 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- * Copyright (C) 2023 WANG Xuerui <git@xen0n.name>
- *
- * raid6/loongarch.h
- *
- * Definitions common to LoongArch RAID-6 code only
- */
-
-#ifndef _LIB_RAID6_LOONGARCH_H
-#define _LIB_RAID6_LOONGARCH_H
-
-#ifdef __KERNEL__
-
-#include <asm/cpu-features.h>
-#include <asm/fpu.h>
-
-#else /* for user-space testing */
-
-#include <sys/auxv.h>
-
-/* have to supply these defines for glibc 2.37- and musl */
-#ifndef HWCAP_LOONGARCH_LSX
-#define HWCAP_LOONGARCH_LSX	(1 << 4)
-#endif
-#ifndef HWCAP_LOONGARCH_LASX
-#define HWCAP_LOONGARCH_LASX	(1 << 5)
-#endif
-
-#define kernel_fpu_begin()
-#define kernel_fpu_end()
-
-#define cpu_has_lsx	(getauxval(AT_HWCAP) & HWCAP_LOONGARCH_LSX)
-#define cpu_has_lasx	(getauxval(AT_HWCAP) & HWCAP_LOONGARCH_LASX)
-
-#endif /* __KERNEL__ */
-
-#endif /* _LIB_RAID6_LOONGARCH_H */
diff --git a/lib/raid6/loongarch_simd.c b/lib/raid6/loongarch_simd.c
index aa5d9f924ca39..72f4d92d4876d 100644
--- a/lib/raid6/loongarch_simd.c
+++ b/lib/raid6/loongarch_simd.c
@@ -10,7 +10,8 @@
  */
 
 #include <linux/raid/pq.h>
-#include "loongarch.h"
+#include <asm/cpu-features.h>
+#include <asm/fpu.h>
 
 /*
  * The vector algorithms are currently priority 0, which means the generic
diff --git a/lib/raid6/mktables.c b/lib/raid6/mktables.c
index 3be03793237c2..3de1dbf6846c4 100644
--- a/lib/raid6/mktables.c
+++ b/lib/raid6/mktables.c
@@ -56,9 +56,7 @@ int main(int argc, char *argv[])
 	uint8_t v;
 	uint8_t exptbl[256], invtbl[256];
 
-	printf("#ifdef __KERNEL__\n");
 	printf("#include <linux/export.h>\n");
-	printf("#endif\n");
 	printf("#include <linux/raid/pq.h>\n");
 
 	/* Compute multiplication table */
@@ -76,9 +74,7 @@ int main(int argc, char *argv[])
 		printf("\t},\n");
 	}
 	printf("};\n");
-	printf("#ifdef __KERNEL__\n");
 	printf("EXPORT_SYMBOL(raid6_gfmul);\n");
-	printf("#endif\n");
 
 	/* Compute vector multiplication table */
 	printf("\nconst u8  __attribute__((aligned(256)))\n"
@@ -101,9 +97,7 @@ int main(int argc, char *argv[])
 		printf("\t},\n");
 	}
 	printf("};\n");
-	printf("#ifdef __KERNEL__\n");
 	printf("EXPORT_SYMBOL(raid6_vgfmul);\n");
-	printf("#endif\n");
 
 	/* Compute power-of-2 table (exponent) */
 	v = 1;
@@ -120,9 +114,7 @@ int main(int argc, char *argv[])
 		}
 	}
 	printf("};\n");
-	printf("#ifdef __KERNEL__\n");
 	printf("EXPORT_SYMBOL(raid6_gfexp);\n");
-	printf("#endif\n");
 
 	/* Compute log-of-2 table */
 	printf("\nconst u8 __attribute__((aligned(256)))\n"
@@ -140,9 +132,7 @@ int main(int argc, char *argv[])
 		}
 	}
 	printf("};\n");
-	printf("#ifdef __KERNEL__\n");
 	printf("EXPORT_SYMBOL(raid6_gflog);\n");
-	printf("#endif\n");
 
 	/* Compute inverse table x^-1 == x^254 */
 	printf("\nconst u8 __attribute__((aligned(256)))\n"
@@ -155,9 +145,7 @@ int main(int argc, char *argv[])
 		}
 	}
 	printf("};\n");
-	printf("#ifdef __KERNEL__\n");
 	printf("EXPORT_SYMBOL(raid6_gfinv);\n");
-	printf("#endif\n");
 
 	/* Compute inv(2^x + 1) (exponent-xor-inverse) table */
 	printf("\nconst u8 __attribute__((aligned(256)))\n"
@@ -169,9 +157,7 @@ int main(int argc, char *argv[])
 			       (j == 7) ? '\n' : ' ');
 	}
 	printf("};\n");
-	printf("#ifdef __KERNEL__\n");
 	printf("EXPORT_SYMBOL(raid6_gfexi);\n");
-	printf("#endif\n");
 
 	return 0;
 }
diff --git a/lib/raid6/mmx.c b/lib/raid6/mmx.c
index 3a5bf53a297b4..e411f0cfbd958 100644
--- a/lib/raid6/mmx.c
+++ b/lib/raid6/mmx.c
@@ -14,7 +14,7 @@
 #ifdef CONFIG_X86_32
 
 #include <linux/raid/pq.h>
-#include "x86.h"
+#include <asm/fpu/api.h>
 
 /* Shared with raid6/sse1.c */
 const struct raid6_mmx_constants {
diff --git a/lib/raid6/neon.c b/lib/raid6/neon.c
index 6d9474ce6da91..47b8bb0afc65f 100644
--- a/lib/raid6/neon.c
+++ b/lib/raid6/neon.c
@@ -6,13 +6,7 @@
  */
 
 #include <linux/raid/pq.h>
-
-#ifdef __KERNEL__
 #include <asm/simd.h>
-#else
-#define scoped_ksimd()
-#define cpu_has_neon()		(1)
-#endif
 
 /*
  * There are 2 reasons these wrappers are kept in a separate compilation unit
diff --git a/lib/raid6/recov_avx2.c b/lib/raid6/recov_avx2.c
index 97d598d2535ca..19fbd9c4dce63 100644
--- a/lib/raid6/recov_avx2.c
+++ b/lib/raid6/recov_avx2.c
@@ -5,7 +5,7 @@
  */
 
 #include <linux/raid/pq.h>
-#include "x86.h"
+#include <asm/fpu/api.h>
 
 static int raid6_has_avx2(void)
 {
diff --git a/lib/raid6/recov_avx512.c b/lib/raid6/recov_avx512.c
index 7986120ca4442..143f4976b2ade 100644
--- a/lib/raid6/recov_avx512.c
+++ b/lib/raid6/recov_avx512.c
@@ -7,7 +7,7 @@
  */
 
 #include <linux/raid/pq.h>
-#include "x86.h"
+#include <asm/fpu/api.h>
 
 static int raid6_has_avx512(void)
 {
diff --git a/lib/raid6/recov_loongarch_simd.c b/lib/raid6/recov_loongarch_simd.c
index 93dc515997a14..eb3a1e79f01f7 100644
--- a/lib/raid6/recov_loongarch_simd.c
+++ b/lib/raid6/recov_loongarch_simd.c
@@ -11,7 +11,8 @@
  */
 
 #include <linux/raid/pq.h>
-#include "loongarch.h"
+#include <asm/cpu-features.h>
+#include <asm/fpu.h>
 
 /*
  * Unlike with the syndrome calculation algorithms, there's no boot-time
diff --git a/lib/raid6/recov_neon.c b/lib/raid6/recov_neon.c
index 9d99aeabd31a9..13d5df718c15f 100644
--- a/lib/raid6/recov_neon.c
+++ b/lib/raid6/recov_neon.c
@@ -5,14 +5,8 @@
  */
 
 #include <linux/raid/pq.h>
-
-#ifdef __KERNEL__
 #include <asm/simd.h>
 #include "neon.h"
-#else
-#define scoped_ksimd()
-#define cpu_has_neon()		(1)
-#endif
 
 static int raid6_has_neon(void)
 {
diff --git a/lib/raid6/recov_ssse3.c b/lib/raid6/recov_ssse3.c
index 2e849185c32b3..146cdbf465bd7 100644
--- a/lib/raid6/recov_ssse3.c
+++ b/lib/raid6/recov_ssse3.c
@@ -4,7 +4,7 @@
  */
 
 #include <linux/raid/pq.h>
-#include "x86.h"
+#include <asm/fpu/api.h>
 
 static int raid6_has_ssse3(void)
 {
diff --git a/lib/raid6/rvv.h b/lib/raid6/rvv.h
index 6d0708a2c8a4b..b0a71b375962c 100644
--- a/lib/raid6/rvv.h
+++ b/lib/raid6/rvv.h
@@ -7,17 +7,8 @@
  * Definitions for RISC-V RAID-6 code
  */
 
-#ifdef __KERNEL__
-#include <asm/vector.h>
-#else
-#define kernel_vector_begin()
-#define kernel_vector_end()
-#include <sys/auxv.h>
-#include <asm/hwcap.h>
-#define has_vector() (getauxval(AT_HWCAP) & COMPAT_HWCAP_ISA_V)
-#endif
-
 #include <linux/raid/pq.h>
+#include <asm/vector.h>
 
 static int rvv_has_vector(void)
 {
diff --git a/lib/raid6/sse1.c b/lib/raid6/sse1.c
index 692fa3a93bf0b..794d5cfa0306f 100644
--- a/lib/raid6/sse1.c
+++ b/lib/raid6/sse1.c
@@ -19,7 +19,7 @@
 #ifdef CONFIG_X86_32
 
 #include <linux/raid/pq.h>
-#include "x86.h"
+#include <asm/fpu/api.h>
 
 /* Defined in raid6/mmx.c */
 extern const struct raid6_mmx_constants {
diff --git a/lib/raid6/sse2.c b/lib/raid6/sse2.c
index 2930220249c90..f9edf8a8d1c42 100644
--- a/lib/raid6/sse2.c
+++ b/lib/raid6/sse2.c
@@ -13,7 +13,7 @@
  */
 
 #include <linux/raid/pq.h>
-#include "x86.h"
+#include <asm/fpu/api.h>
 
 static const struct raid6_sse_constants {
 	u64 x1d[2];
diff --git a/lib/raid6/vpermxor.uc b/lib/raid6/vpermxor.uc
index 1bfb127fbfe81..a8e76b1c956ed 100644
--- a/lib/raid6/vpermxor.uc
+++ b/lib/raid6/vpermxor.uc
@@ -25,10 +25,8 @@
 
 #include <altivec.h>
 #include <asm/ppc-opcode.h>
-#ifdef __KERNEL__
 #include <asm/cputable.h>
 #include <asm/switch_to.h>
-#endif
 
 typedef vector unsigned char unative_t;
 #define NSIZE sizeof(unative_t)
@@ -85,13 +83,8 @@ int raid6_have_altivec_vpermxor(void);
 int raid6_have_altivec_vpermxor(void)
 {
 	/* Check if arch has both altivec and the vpermxor instructions */
-# ifdef __KERNEL__
 	return (cpu_has_feature(CPU_FTR_ALTIVEC_COMP) &&
 		cpu_has_feature(CPU_FTR_ARCH_207S));
-# else
-	return 1;
-#endif
-
 }
 #endif
 
diff --git a/lib/raid6/x86.h b/lib/raid6/x86.h
deleted file mode 100644
index 9a6ff37115e71..0000000000000
--- a/lib/raid6/x86.h
+++ /dev/null
@@ -1,75 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/* ----------------------------------------------------------------------- *
- *
- *   Copyright 2002-2004 H. Peter Anvin - All Rights Reserved
- *
- * ----------------------------------------------------------------------- */
-
-/*
- * raid6/x86.h
- *
- * Definitions common to x86 and x86-64 RAID-6 code only
- */
-
-#ifndef LINUX_RAID_RAID6X86_H
-#define LINUX_RAID_RAID6X86_H
-
-#if (defined(__i386__) || defined(__x86_64__)) && !defined(__arch_um__)
-
-#ifdef __KERNEL__ /* Real code */
-
-#include <asm/fpu/api.h>
-
-#else /* Dummy code for user space testing */
-
-static inline void kernel_fpu_begin(void)
-{
-}
-
-static inline void kernel_fpu_end(void)
-{
-}
-
-#define __aligned(x) __attribute__((aligned(x)))
-
-#define X86_FEATURE_MMX		(0*32+23) /* Multimedia Extensions */
-#define X86_FEATURE_FXSR	(0*32+24) /* FXSAVE and FXRSTOR instructions
-					   * (fast save and restore) */
-#define X86_FEATURE_XMM		(0*32+25) /* Streaming SIMD Extensions */
-#define X86_FEATURE_XMM2	(0*32+26) /* Streaming SIMD Extensions-2 */
-#define X86_FEATURE_XMM3	(4*32+ 0) /* "pni" SSE-3 */
-#define X86_FEATURE_SSSE3	(4*32+ 9) /* Supplemental SSE-3 */
-#define X86_FEATURE_AVX	(4*32+28) /* Advanced Vector Extensions */
-#define X86_FEATURE_AVX2        (9*32+ 5) /* AVX2 instructions */
-#define X86_FEATURE_AVX512F     (9*32+16) /* AVX-512 Foundation */
-#define X86_FEATURE_AVX512DQ    (9*32+17) /* AVX-512 DQ (Double/Quad granular)
-					   * Instructions
-					   */
-#define X86_FEATURE_AVX512BW    (9*32+30) /* AVX-512 BW (Byte/Word granular)
-					   * Instructions
-					   */
-#define X86_FEATURE_AVX512VL    (9*32+31) /* AVX-512 VL (128/256 Vector Length)
-					   * Extensions
-					   */
-#define X86_FEATURE_MMXEXT	(1*32+22) /* AMD MMX extensions */
-
-/* Should work well enough on modern CPUs for testing */
-static inline int boot_cpu_has(int flag)
-{
-	u32 eax, ebx, ecx, edx;
-
-	eax = (flag & 0x100) ? 7 :
-		(flag & 0x20) ? 0x80000001 : 1;
-	ecx = 0;
-
-	asm volatile("cpuid"
-		     : "+a" (eax), "=b" (ebx), "=d" (edx), "+c" (ecx));
-
-	return ((flag & 0x100 ? ebx :
-		(flag & 0x80) ? ecx : edx) >> (flag & 31)) & 1;
-}
-
-#endif /* ndef __KERNEL__ */
-
-#endif
-#endif
author	Christoph Hellwig <hch@lst.de>	2026-05-18 07:17:45 +0200
committer	Andrew Morton <akpm@linux-foundation.org>	2026-05-28 21:24:52 -0700
commit	3d6beb659ddf0664612bafacb0bd9030ba6ec7e6 (patch)
tree	b9afe73a17a11e855cd0b58f3b180d1409066369 /lib
parent	c4697486fc232e821a33191d809d0ac3bb600027 (diff)
download	ath-3d6beb659ddf0664612bafacb0bd9030ba6ec7e6.tar.gz