include/crypto/internal/simd.h

Source file repositories/reference/linux-study-clean/include/crypto/internal/simd.h

File Facts

System
Linux kernel
Corpus path
include/crypto/internal/simd.h
Extension
.h
Size
1273 bytes
Lines
41
Domain
Repository Root And Misc
Bucket
include
Inferred role
Repository Root And Misc: implementation source
Status
source implementation candidate

Why This File Exists

Top-level or miscellaneous repository surface. Use this as map coverage unless a later manual pass promotes the file into a deeper subsystem dossier.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef _CRYPTO_INTERNAL_SIMD_H
#define _CRYPTO_INTERNAL_SIMD_H

#include <asm/simd.h>
#include <linux/percpu.h>
#include <linux/types.h>

struct simd_aead_alg;
struct aead_alg;

int simd_register_aeads_compat(struct aead_alg *algs, int count,
			       struct simd_aead_alg **simd_algs);

void simd_unregister_aeads(struct aead_alg *algs, int count,
			   struct simd_aead_alg **simd_algs);

/*
 * crypto_simd_usable() - is it allowed at this time to use SIMD instructions or
 *			  access the SIMD register file?
 *
 * This delegates to may_use_simd(), except that this also returns false if SIMD
 * in crypto code has been temporarily disabled on this CPU by the crypto
 * self-tests, in order to test the no-SIMD fallback code.  This override is
 * currently limited to configurations where the "full" self-tests are enabled,
 * because it might be a bit too invasive to be part of the "fast" self-tests.
 */
#ifdef CONFIG_CRYPTO_SELFTESTS_FULL
DECLARE_PER_CPU(bool, crypto_simd_disabled_for_test);
#define crypto_simd_usable() \
	(may_use_simd() && !this_cpu_read(crypto_simd_disabled_for_test))
#else
#define crypto_simd_usable() may_use_simd()
#endif

#endif /* _CRYPTO_INTERNAL_SIMD_H */

Annotation

Implementation Notes