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lib/crc: make the CPU feature static keys __ro_after_init

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All of the CRC library's CPU feature static_keys are initialized by
initcalls and never change afterwards, so there's no need for them to be
in the regular .data section.  Put them in .data..ro_after_init instead.

Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Heiko Carstens <hca@linux.ibm.com> # s390
Link: https://lore.kernel.org/r/20250413154350.10819-1-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
This commit is contained in:
Eric Biggers 2025-04-13 08:43:50 -07:00
parent 8ffd015db8
commit 7ef377c4d4
12 changed files with 16 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/arm/lib/crc-t10dif-glue.c
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@ -16,8 +16,8 @@
#include <asm/neon.h>
#include <asm/simd.h>
static DEFINE_STATIC_KEY_FALSE(have_neon);
static DEFINE_STATIC_KEY_FALSE(have_pmull);
static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_neon);
static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_pmull);
#define CRC_T10DIF_PMULL_CHUNK_SIZE 16U

4
arch/arm/lib/crc32-glue.c
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@ -18,8 +18,8 @@
#include <asm/neon.h>
#include <asm/simd.h>
static DEFINE_STATIC_KEY_FALSE(have_crc32);
static DEFINE_STATIC_KEY_FALSE(have_pmull);
static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_crc32);
static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_pmull);
#define PMULL_MIN_LEN 64 /* min size of buffer for pmull functions */

4
arch/arm64/lib/crc-t10dif-glue.c
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@ -17,8 +17,8 @@
#include <asm/neon.h>
#include <asm/simd.h>
static DEFINE_STATIC_KEY_FALSE(have_asimd);
static DEFINE_STATIC_KEY_FALSE(have_pmull);
static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_asimd);
static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_pmull);
#define CRC_T10DIF_PMULL_CHUNK_SIZE 16U

2
arch/loongarch/lib/crc32-loongarch.c
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@ -26,7 +26,7 @@ do { \
#define CRC32(crc, value, size) _CRC32(crc, value, size, crc)
#define CRC32C(crc, value, size) _CRC32(crc, value, size, crcc)
static DEFINE_STATIC_KEY_FALSE(have_crc32);
static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_crc32);
u32 crc32_le_arch(u32 crc, const u8 *p, size_t len)
{

2
arch/mips/lib/crc32-mips.c
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@ -62,7 +62,7 @@ do { \
#define CRC32C(crc, value, size) \
_CRC32(crc, value, size, crc32c)
static DEFINE_STATIC_KEY_FALSE(have_crc32);
static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_crc32);
u32 crc32_le_arch(u32 crc, const u8 *p, size_t len)
{

2
arch/powerpc/lib/crc-t10dif-glue.c
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@ -21,7 +21,7 @@
#define VECTOR_BREAKPOINT 64
static DEFINE_STATIC_KEY_FALSE(have_vec_crypto);
static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_vec_crypto);
u32 __crct10dif_vpmsum(u32 crc, unsigned char const *p, size_t len);

2
arch/powerpc/lib/crc32-glue.c
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@ -13,7 +13,7 @@
#define VECTOR_BREAKPOINT 512
static DEFINE_STATIC_KEY_FALSE(have_vec_crypto);
static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_vec_crypto);
u32 __crc32c_vpmsum(u32 crc, const u8 *p, size_t len);

2
arch/s390/lib/crc32-glue.c
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@ -18,7 +18,7 @@
#define VX_ALIGNMENT 16L
#define VX_ALIGN_MASK (VX_ALIGNMENT - 1)
static DEFINE_STATIC_KEY_FALSE(have_vxrs);
static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_vxrs);
/*
* DEFINE_CRC32_VX() - Define a CRC-32 function using the vector extension

2
arch/sparc/lib/crc32_glue.c
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@ -17,7 +17,7 @@
#include <asm/pstate.h>
#include <asm/elf.h>
static DEFINE_STATIC_KEY_FALSE(have_crc32c_opcode);
static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_crc32c_opcode);
u32 crc32_le_arch(u32 crc, const u8 *data, size_t len)
{

2
arch/x86/lib/crc-t10dif-glue.c
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@ -9,7 +9,7 @@
#include <linux/module.h>
#include "crc-pclmul-template.h"
static DEFINE_STATIC_KEY_FALSE(have_pclmulqdq);
static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_pclmulqdq);
DECLARE_CRC_PCLMUL_FUNCS(crc16_msb, u16);

4
arch/x86/lib/crc32-glue.c
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@ -11,8 +11,8 @@
#include <linux/module.h>
#include "crc-pclmul-template.h"
static DEFINE_STATIC_KEY_FALSE(have_crc32);
static DEFINE_STATIC_KEY_FALSE(have_pclmulqdq);
static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_crc32);
static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_pclmulqdq);
DECLARE_CRC_PCLMUL_FUNCS(crc32_lsb, u32);

2
arch/x86/lib/crc64-glue.c
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@ -9,7 +9,7 @@
#include <linux/module.h>
#include "crc-pclmul-template.h"
static DEFINE_STATIC_KEY_FALSE(have_pclmulqdq);
static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_pclmulqdq);
DECLARE_CRC_PCLMUL_FUNCS(crc64_msb, u64);
DECLARE_CRC_PCLMUL_FUNCS(crc64_lsb, u64);