[PATCH v5 3/3] arm64: Kconfig: Enable usage of optimized memset/memcpy/memmove
Stefan Roese
sr at denx.de
Tue Aug 17 10:48:27 CEST 2021
This patch enables the use of the optimized memset(), memmove() &
memcpy() versions recently added on ARM64.
Signed-off-by: Stefan Roese <sr at denx.de>
---
Changes in v5:
- memmove is now auto-selected (or deselected) with the memcpy
Kconfig selection as it's entry is the same as memcpy for ARM64
Changes in v3:
- Add memmove as well
arch/arm/Kconfig | 37 +++++++++++++++++++++++++++++------
arch/arm/include/asm/string.h | 4 ++++
2 files changed, 35 insertions(+), 6 deletions(-)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 55a9c3acef8d..0cf29c702dde 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -457,7 +457,6 @@ config ARM_CORTEX_CPU_IS_UP
config USE_ARCH_MEMCPY
bool "Use an assembly optimized implementation of memcpy"
default y
- depends on !ARM64
help
Enable the generation of an optimized version of memcpy.
Such an implementation may be faster under some conditions
@@ -466,7 +465,7 @@ config USE_ARCH_MEMCPY
config SPL_USE_ARCH_MEMCPY
bool "Use an assembly optimized implementation of memcpy for SPL"
default y if USE_ARCH_MEMCPY
- depends on !ARM64 && SPL
+ depends on SPL
help
Enable the generation of an optimized version of memcpy.
Such an implementation may be faster under some conditions
@@ -475,16 +474,42 @@ config SPL_USE_ARCH_MEMCPY
config TPL_USE_ARCH_MEMCPY
bool "Use an assembly optimized implementation of memcpy for TPL"
default y if USE_ARCH_MEMCPY
- depends on !ARM64 && TPL
+ depends on TPL
help
Enable the generation of an optimized version of memcpy.
Such an implementation may be faster under some conditions
but may increase the binary size.
+config USE_ARCH_MEMMOVE
+ bool "Use an assembly optimized implementation of memmove" if !ARM64
+ default USE_ARCH_MEMCPY if ARM64
+ depends on ARM64
+ help
+ Enable the generation of an optimized version of memmove.
+ Such an implementation may be faster under some conditions
+ but may increase the binary size.
+
+config SPL_USE_ARCH_MEMMOVE
+ bool "Use an assembly optimized implementation of memmove for SPL" if !ARM64
+ default SPL_USE_ARCH_MEMCPY if ARM64
+ depends on SPL && ARM64
+ help
+ Enable the generation of an optimized version of memmove.
+ Such an implementation may be faster under some conditions
+ but may increase the binary size.
+
+config TPL_USE_ARCH_MEMMOVE
+ bool "Use an assembly optimized implementation of memmove for TPL" if !ARM64
+ default TPL_USE_ARCH_MEMCPY if ARM64
+ depends on TPL && ARM64
+ help
+ Enable the generation of an optimized version of memmove.
+ Such an implementation may be faster under some conditions
+ but may increase the binary size.
+
config USE_ARCH_MEMSET
bool "Use an assembly optimized implementation of memset"
default y
- depends on !ARM64
help
Enable the generation of an optimized version of memset.
Such an implementation may be faster under some conditions
@@ -493,7 +518,7 @@ config USE_ARCH_MEMSET
config SPL_USE_ARCH_MEMSET
bool "Use an assembly optimized implementation of memset for SPL"
default y if USE_ARCH_MEMSET
- depends on !ARM64 && SPL
+ depends on SPL
help
Enable the generation of an optimized version of memset.
Such an implementation may be faster under some conditions
@@ -502,7 +527,7 @@ config SPL_USE_ARCH_MEMSET
config TPL_USE_ARCH_MEMSET
bool "Use an assembly optimized implementation of memset for TPL"
default y if USE_ARCH_MEMSET
- depends on !ARM64 && TPL
+ depends on TPL
help
Enable the generation of an optimized version of memset.
Such an implementation may be faster under some conditions
diff --git a/arch/arm/include/asm/string.h b/arch/arm/include/asm/string.h
index 11eaa34fab8c..ead3f2c35643 100644
--- a/arch/arm/include/asm/string.h
+++ b/arch/arm/include/asm/string.h
@@ -19,7 +19,11 @@ extern char * strchr(const char * s, int c);
#endif
extern void * memcpy(void *, const void *, __kernel_size_t);
+#if CONFIG_IS_ENABLED(USE_ARCH_MEMMOVE)
+#define __HAVE_ARCH_MEMMOVE
+#else
#undef __HAVE_ARCH_MEMMOVE
+#endif
extern void * memmove(void *, const void *, __kernel_size_t);
#undef __HAVE_ARCH_MEMCHR
--
2.33.0
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