diff options
| author | Hauke Mehrtens <hauke@hauke-m.de> | 2018-11-01 17:57:55 +0100 |
|---|---|---|
| committer | Hauke Mehrtens <hauke@hauke-m.de> | 2018-12-15 12:50:06 +0100 |
| commit | 52a82ce3dd901a1536c7d7d9d963e9c2d761c816 (patch) | |
| tree | 79020fb59420fcea7bdc4b12272f7251e101fe64 /target/linux/generic/pending-4.19/306-mips_mem_functions_performance.patch | |
| parent | a272af75cd8c67d265400f96c1e6bb172315c23c (diff) | |
| download | upstream-52a82ce3dd901a1536c7d7d9d963e9c2d761c816.tar.gz upstream-52a82ce3dd901a1536c7d7d9d963e9c2d761c816.tar.bz2 upstream-52a82ce3dd901a1536c7d7d9d963e9c2d761c816.zip | |
kernel: Copy patches from kernel 4.14 to 4.19
This just copies the files from the kernel 4.14 specific folders into
the kernel 4.19 specific folder, no changes are done to the files in
this commit.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Diffstat (limited to 'target/linux/generic/pending-4.19/306-mips_mem_functions_performance.patch')
| -rw-r--r-- | target/linux/generic/pending-4.19/306-mips_mem_functions_performance.patch | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/target/linux/generic/pending-4.19/306-mips_mem_functions_performance.patch b/target/linux/generic/pending-4.19/306-mips_mem_functions_performance.patch new file mode 100644 index 0000000000..e73cfd61b3 --- /dev/null +++ b/target/linux/generic/pending-4.19/306-mips_mem_functions_performance.patch @@ -0,0 +1,106 @@ +From: Felix Fietkau <nbd@nbd.name> +Subject: [PATCH] mips: allow the compiler to optimize memset, memcmp, memcpy for better performance and (in some instances) smaller code + +lede-commit: 07e59c7bc7f375f792ec9734be42fe4fa391a8bb +Signed-off-by: Felix Fietkau <nbd@nbd.name> +--- + arch/mips/boot/compressed/Makefile | 3 ++- + arch/mips/include/asm/string.h | 38 ++++++++++++++++++++++++++++++++++++++ + arch/mips/lib/Makefile | 2 +- + arch/mips/lib/memcmp.c | 22 ++++++++++++++++++++++ + 4 files changed, 63 insertions(+), 2 deletions(-) + create mode 100644 arch/mips/lib/memcmp.c + +--- a/arch/mips/boot/compressed/Makefile ++++ b/arch/mips/boot/compressed/Makefile +@@ -23,7 +23,8 @@ KBUILD_CFLAGS := $(filter-out -pg, $(KBU + KBUILD_CFLAGS := $(filter-out -fstack-protector, $(KBUILD_CFLAGS)) + + KBUILD_CFLAGS := $(KBUILD_CFLAGS) -D__KERNEL__ \ +- -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) -D"VMLINUX_LOAD_ADDRESS_ULL=$(VMLINUX_LOAD_ADDRESS)ull" ++ -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) -D"VMLINUX_LOAD_ADDRESS_ULL=$(VMLINUX_LOAD_ADDRESS)ull" \ ++ -D__ZBOOT__ + + KBUILD_AFLAGS := $(KBUILD_AFLAGS) -D__ASSEMBLY__ \ + -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) \ +--- a/arch/mips/include/asm/string.h ++++ b/arch/mips/include/asm/string.h +@@ -140,4 +140,42 @@ extern void *memcpy(void *__to, __const_ + #define __HAVE_ARCH_MEMMOVE + extern void *memmove(void *__dest, __const__ void *__src, size_t __n); + ++#ifndef __ZBOOT__ ++#define memset(__s, __c, len) \ ++({ \ ++ size_t __len = (len); \ ++ void *__ret; \ ++ if (__builtin_constant_p(len) && __len >= 64) \ ++ __ret = memset((__s), (__c), __len); \ ++ else \ ++ __ret = __builtin_memset((__s), (__c), __len); \ ++ __ret; \ ++}) ++ ++#define memcpy(dst, src, len) \ ++({ \ ++ size_t __len = (len); \ ++ void *__ret; \ ++ if (__builtin_constant_p(len) && __len >= 64) \ ++ __ret = memcpy((dst), (src), __len); \ ++ else \ ++ __ret = __builtin_memcpy((dst), (src), __len); \ ++ __ret; \ ++}) ++ ++#define memmove(dst, src, len) \ ++({ \ ++ size_t __len = (len); \ ++ void *__ret; \ ++ if (__builtin_constant_p(len) && __len >= 64) \ ++ __ret = memmove((dst), (src), __len); \ ++ else \ ++ __ret = __builtin_memmove((dst), (src), __len); \ ++ __ret; \ ++}) ++ ++#define __HAVE_ARCH_MEMCMP ++#define memcmp(src1, src2, len) __builtin_memcmp((src1), (src2), (len)) ++#endif ++ + #endif /* _ASM_STRING_H */ +--- a/arch/mips/lib/Makefile ++++ b/arch/mips/lib/Makefile +@@ -5,7 +5,7 @@ + + lib-y += bitops.o csum_partial.o delay.o memcpy.o memset.o \ + mips-atomic.o strncpy_user.o \ +- strnlen_user.o uncached.o ++ strnlen_user.o uncached.o memcmp.o + + obj-y += iomap.o iomap_copy.o + obj-$(CONFIG_PCI) += iomap-pci.o +--- /dev/null ++++ b/arch/mips/lib/memcmp.c +@@ -0,0 +1,22 @@ ++/* ++ * copied from linux/lib/string.c ++ * ++ * Copyright (C) 1991, 1992 Linus Torvalds ++ */ ++ ++#include <linux/module.h> ++#include <linux/string.h> ++ ++#undef memcmp ++int memcmp(const void *cs, const void *ct, size_t count) ++{ ++ const unsigned char *su1, *su2; ++ int res = 0; ++ ++ for (su1 = cs, su2 = ct; 0 < count; ++su1, ++su2, count--) ++ if ((res = *su1 - *su2) != 0) ++ break; ++ return res; ++} ++EXPORT_SYMBOL(memcmp); ++ |