diff options
Diffstat (limited to 'target/linux/brcm2708/patches-3.18/0062-Improve-__copy_to_user-and-__copy_from_user-performa.patch')
| -rw-r--r--[-rwxr-xr-x] | target/linux/brcm2708/patches-3.18/0062-Improve-__copy_to_user-and-__copy_from_user-performa.patch | 40 |
1 files changed, 3 insertions, 37 deletions
diff --git a/target/linux/brcm2708/patches-3.18/0062-Improve-__copy_to_user-and-__copy_from_user-performa.patch b/target/linux/brcm2708/patches-3.18/0062-Improve-__copy_to_user-and-__copy_from_user-performa.patch index e8c5281e91..97952690b6 100755..100644 --- a/target/linux/brcm2708/patches-3.18/0062-Improve-__copy_to_user-and-__copy_from_user-performa.patch +++ b/target/linux/brcm2708/patches-3.18/0062-Improve-__copy_to_user-and-__copy_from_user-performa.patch @@ -28,11 +28,9 @@ optimised memcpy/memmove/memcmp/memset implementations. create mode 100644 arch/arm/lib/memmove_rpi.S create mode 100644 arch/arm/lib/memset_rpi.S -diff --git a/arch/arm/include/asm/string.h b/arch/arm/include/asm/string.h -index cf4f3aa..9fe7780 100644 --- a/arch/arm/include/asm/string.h +++ b/arch/arm/include/asm/string.h -@@ -24,6 +24,11 @@ extern void * memchr(const void *, int, __kernel_size_t); +@@ -24,6 +24,11 @@ extern void * memchr(const void *, int, #define __HAVE_ARCH_MEMSET extern void * memset(void *, int, __kernel_size_t); @@ -44,8 +42,6 @@ index cf4f3aa..9fe7780 100644 extern void __memzero(void *ptr, __kernel_size_t n); #define memset(p,v,n) \ -diff --git a/arch/arm/include/asm/uaccess.h b/arch/arm/include/asm/uaccess.h -index 4767eb9..bcd43de 100644 --- a/arch/arm/include/asm/uaccess.h +++ b/arch/arm/include/asm/uaccess.h @@ -475,6 +475,7 @@ do { \ @@ -56,8 +52,6 @@ index 4767eb9..bcd43de 100644 extern unsigned long __must_check __copy_to_user(void __user *to, const void *from, unsigned long n); extern unsigned long __must_check __copy_to_user_std(void __user *to, const void *from, unsigned long n); extern unsigned long __must_check __clear_user(void __user *addr, unsigned long n); -diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile -index 0573faa..498f5dd 100644 --- a/arch/arm/lib/Makefile +++ b/arch/arm/lib/Makefile @@ -6,15 +6,24 @@ @@ -88,9 +82,6 @@ index 0573faa..498f5dd 100644 mmu-y := clear_user.o copy_page.o getuser.o putuser.o # the code in uaccess.S is not preemption safe and -diff --git a/arch/arm/lib/arm-mem.h b/arch/arm/lib/arm-mem.h -new file mode 100644 -index 0000000..5d4bda1 --- /dev/null +++ b/arch/arm/lib/arm-mem.h @@ -0,0 +1,159 @@ @@ -253,8 +244,6 @@ index 0000000..5d4bda1 + .endif +92: +.endm -diff --git a/arch/arm/lib/copy_from_user.S b/arch/arm/lib/copy_from_user.S -index 66a477a..3faddf7 100644 --- a/arch/arm/lib/copy_from_user.S +++ b/arch/arm/lib/copy_from_user.S @@ -84,11 +84,13 @@ @@ -272,9 +261,6 @@ index 66a477a..3faddf7 100644 .pushsection .fixup,"ax" .align 0 -diff --git a/arch/arm/lib/exports_rpi.c b/arch/arm/lib/exports_rpi.c -new file mode 100644 -index 0000000..1f82604 --- /dev/null +++ b/arch/arm/lib/exports_rpi.c @@ -0,0 +1,37 @@ @@ -315,9 +301,6 @@ index 0000000..1f82604 +#include <linux/module.h> + +EXPORT_SYMBOL(memcmp); -diff --git a/arch/arm/lib/memcmp_rpi.S b/arch/arm/lib/memcmp_rpi.S -new file mode 100644 -index 0000000..bf6e4ed --- /dev/null +++ b/arch/arm/lib/memcmp_rpi.S @@ -0,0 +1,285 @@ @@ -606,9 +589,6 @@ index 0000000..bf6e4ed + .unreq DAT7 + .unreq OFF +ENDPROC(memcmp) -diff --git a/arch/arm/lib/memcpy_rpi.S b/arch/arm/lib/memcpy_rpi.S -new file mode 100644 -index 0000000..15ff2bd --- /dev/null +++ b/arch/arm/lib/memcpy_rpi.S @@ -0,0 +1,59 @@ @@ -671,9 +651,6 @@ index 0000000..15ff2bd +ENTRY(memcpy) + memcpy 0 +ENDPROC(memcpy) -diff --git a/arch/arm/lib/memcpymove.h b/arch/arm/lib/memcpymove.h -new file mode 100644 -index 0000000..d8be584 --- /dev/null +++ b/arch/arm/lib/memcpymove.h @@ -0,0 +1,506 @@ @@ -1183,9 +1160,6 @@ index 0000000..d8be584 + .unreq LAST + .unreq OFF +.endm -diff --git a/arch/arm/lib/memmove_rpi.S b/arch/arm/lib/memmove_rpi.S -new file mode 100644 -index 0000000..8b0760c --- /dev/null +++ b/arch/arm/lib/memmove_rpi.S @@ -0,0 +1,61 @@ @@ -1250,9 +1224,6 @@ index 0000000..8b0760c + bpl memcpy /* pl works even over -1 - 0 and 0x7fffffff - 0x80000000 boundaries */ + memcpy 1 +ENDPROC(memmove) -diff --git a/arch/arm/lib/memset_rpi.S b/arch/arm/lib/memset_rpi.S -new file mode 100644 -index 0000000..2cde883 --- /dev/null +++ b/arch/arm/lib/memset_rpi.S @@ -0,0 +1,121 @@ @@ -1377,8 +1348,6 @@ index 0000000..2cde883 + .unreq DAT2 + .unreq DAT3 +ENDPROC(memset) -diff --git a/arch/arm/lib/uaccess_with_memcpy.c b/arch/arm/lib/uaccess_with_memcpy.c -index 3e58d71..0622891 100644 --- a/arch/arm/lib/uaccess_with_memcpy.c +++ b/arch/arm/lib/uaccess_with_memcpy.c @@ -22,6 +22,14 @@ @@ -1396,7 +1365,7 @@ index 3e58d71..0622891 100644 static int pin_page_for_write(const void __user *_addr, pte_t **ptep, spinlock_t **ptlp) { -@@ -85,7 +93,44 @@ pin_page_for_write(const void __user *_addr, pte_t **ptep, spinlock_t **ptlp) +@@ -85,7 +93,44 @@ pin_page_for_write(const void __user *_a return 1; } @@ -1497,7 +1466,7 @@ index 3e58d71..0622891 100644 unsigned long __copy_to_user(void __user *to, const void *from, unsigned long n) { -@@ -145,10 +238,25 @@ __copy_to_user(void __user *to, const void *from, unsigned long n) +@@ -145,10 +238,25 @@ __copy_to_user(void __user *to, const vo * With frame pointer disabled, tail call optimization kicks in * as well making this test almost invisible. */ @@ -1524,6 +1493,3 @@ index 3e58d71..0622891 100644 static unsigned long noinline __clear_user_memset(void __user *addr, unsigned long n) --- -1.8.3.2 - |