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lib/crypto: chacha: Remove unused function chacha_is_arch_optimized()

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chacha_is_arch_optimized() is no longer used, so remove it.

Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20250827151131.27733-4-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
This commit is contained in:
Eric Biggers 2025-08-27 08:11:22 -07:00
parent 9dd6bb667e
commit c4b846ff6e
8 changed files with 0 additions and 52 deletions
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9
include/crypto/chacha.h
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@ -119,13 +119,4 @@ static inline void chacha_zeroize_state(struct chacha_state *state)
memzero_explicit(state, sizeof(*state));
}
#if IS_ENABLED(CONFIG_CRYPTO_ARCH_HAVE_LIB_CHACHA)
bool chacha_is_arch_optimized(void);
#else
static inline bool chacha_is_arch_optimized(void)
{
return false;
}
#endif
#endif /* _CRYPTO_CHACHA_H */

7
lib/crypto/arm/chacha-glue.c
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@ -101,13 +101,6 @@ void chacha_crypt_arch(struct chacha_state *state, u8 *dst, const u8 *src,
}
EXPORT_SYMBOL(chacha_crypt_arch);
bool chacha_is_arch_optimized(void)
{
/* We always can use at least the ARM scalar implementation. */
return true;
}
EXPORT_SYMBOL(chacha_is_arch_optimized);
static int __init chacha_arm_mod_init(void)
{
if (IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && (elf_hwcap & HWCAP_NEON)) {

6
lib/crypto/arm64/chacha-neon-glue.c
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@ -95,12 +95,6 @@ void chacha_crypt_arch(struct chacha_state *state, u8 *dst, const u8 *src,
}
EXPORT_SYMBOL(chacha_crypt_arch);
bool chacha_is_arch_optimized(void)
{
return static_key_enabled(&have_neon);
}
EXPORT_SYMBOL(chacha_is_arch_optimized);
static int __init chacha_simd_mod_init(void)
{
if (cpu_have_named_feature(ASIMD))

6
lib/crypto/mips/chacha-glue.c
View File

@ -18,12 +18,6 @@ asmlinkage void hchacha_block_arch(const struct chacha_state *state,
u32 out[HCHACHA_OUT_WORDS], int nrounds);
EXPORT_SYMBOL(hchacha_block_arch);
bool chacha_is_arch_optimized(void)
{
return true;
}
EXPORT_SYMBOL(chacha_is_arch_optimized);
MODULE_DESCRIPTION("ChaCha and HChaCha functions (MIPS optimized)");
MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>");
MODULE_LICENSE("GPL v2");

6
lib/crypto/powerpc/chacha-p10-glue.c
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@ -76,12 +76,6 @@ void chacha_crypt_arch(struct chacha_state *state, u8 *dst, const u8 *src,
}
EXPORT_SYMBOL(chacha_crypt_arch);
bool chacha_is_arch_optimized(void)
{
return static_key_enabled(&have_p10);
}
EXPORT_SYMBOL(chacha_is_arch_optimized);
static int __init chacha_p10_init(void)
{
if (cpu_has_feature(CPU_FTR_ARCH_31))

6
lib/crypto/riscv/chacha-riscv64-glue.c
View File

@ -50,12 +50,6 @@ void chacha_crypt_arch(struct chacha_state *state, u8 *dst, const u8 *src,
}
EXPORT_SYMBOL(chacha_crypt_arch);
bool chacha_is_arch_optimized(void)
{
return static_key_enabled(&use_zvkb);
}
EXPORT_SYMBOL(chacha_is_arch_optimized);
static int __init riscv64_chacha_mod_init(void)
{
if (riscv_isa_extension_available(NULL, ZVKB) &&

6
lib/crypto/s390/chacha-glue.c
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@ -47,11 +47,5 @@ void chacha_crypt_arch(struct chacha_state *state, u8 *dst, const u8 *src,
}
EXPORT_SYMBOL(chacha_crypt_arch);
bool chacha_is_arch_optimized(void)
{
return cpu_has_vx();
}
EXPORT_SYMBOL(chacha_is_arch_optimized);
MODULE_DESCRIPTION("ChaCha stream cipher (s390 optimized)");
MODULE_LICENSE("GPL v2");

6
lib/crypto/x86/chacha_glue.c
View File

@ -160,12 +160,6 @@ void chacha_crypt_arch(struct chacha_state *state, u8 *dst, const u8 *src,
}
EXPORT_SYMBOL(chacha_crypt_arch);
bool chacha_is_arch_optimized(void)
{
return static_key_enabled(&chacha_use_simd);
}
EXPORT_SYMBOL(chacha_is_arch_optimized);
static int __init chacha_simd_mod_init(void)
{
if (!boot_cpu_has(X86_FEATURE_SSSE3))