diff options
Diffstat (limited to 'arch/tile/lib')
| -rw-r--r-- | arch/tile/lib/atomic_32.c | 47 | ||||
| -rw-r--r-- | arch/tile/lib/exports.c | 8 | ||||
| -rw-r--r-- | arch/tile/lib/usercopy_32.S | 76 | ||||
| -rw-r--r-- | arch/tile/lib/usercopy_64.S | 49 |
4 files changed, 1 insertions, 179 deletions
diff --git a/arch/tile/lib/atomic_32.c b/arch/tile/lib/atomic_32.c index 771b251b409..f5cada70c3c 100644 --- a/arch/tile/lib/atomic_32.c +++ b/arch/tile/lib/atomic_32.c @@ -18,7 +18,6 @@ #include <linux/module.h> #include <linux/mm.h> #include <linux/atomic.h> -#include <asm/futex.h> #include <arch/chip.h> /* See <asm/atomic_32.h> */ @@ -50,7 +49,7 @@ int atomic_locks[PAGE_SIZE / sizeof(int)] __page_aligned_bss; #endif /* ATOMIC_LOCKS_FOUND_VIA_TABLE() */ -static inline int *__atomic_hashed_lock(volatile void *v) +int *__atomic_hashed_lock(volatile void *v) { /* NOTE: this code must match "sys_cmpxchg" in kernel/intvec_32.S */ #if ATOMIC_LOCKS_FOUND_VIA_TABLE() @@ -191,47 +190,6 @@ u64 _atomic64_cmpxchg(atomic64_t *v, u64 o, u64 n) EXPORT_SYMBOL(_atomic64_cmpxchg); -static inline int *__futex_setup(int __user *v) -{ - /* - * Issue a prefetch to the counter to bring it into cache. - * As for __atomic_setup, but we can't do a read into the L1 - * since it might fault; instead we do a prefetch into the L2. - */ - __insn_prefetch(v); - return __atomic_hashed_lock((int __force *)v); -} - -struct __get_user futex_set(u32 __user *v, int i) -{ - return __atomic_xchg((int __force *)v, __futex_setup(v), i); -} - -struct __get_user futex_add(u32 __user *v, int n) -{ - return __atomic_xchg_add((int __force *)v, __futex_setup(v), n); -} - -struct __get_user futex_or(u32 __user *v, int n) -{ - return __atomic_or((int __force *)v, __futex_setup(v), n); -} - -struct __get_user futex_andn(u32 __user *v, int n) -{ - return __atomic_andn((int __force *)v, __futex_setup(v), n); -} - -struct __get_user futex_xor(u32 __user *v, int n) -{ - return __atomic_xor((int __force *)v, __futex_setup(v), n); -} - -struct __get_user futex_cmpxchg(u32 __user *v, int o, int n) -{ - return __atomic_cmpxchg((int __force *)v, __futex_setup(v), o, n); -} - /* * If any of the atomic or futex routines hit a bad address (not in * the page tables at kernel PL) this routine is called. The futex @@ -323,7 +281,4 @@ void __init __init_atomic_per_cpu(void) BUILD_BUG_ON((PAGE_SIZE >> 3) > ATOMIC_HASH_SIZE); #endif /* ATOMIC_LOCKS_FOUND_VIA_TABLE() */ - - /* The futex code makes this assumption, so we validate it here. */ - BUILD_BUG_ON(sizeof(atomic_t) != sizeof(int)); } diff --git a/arch/tile/lib/exports.c b/arch/tile/lib/exports.c index 2a81d32de0d..dd5f0a33fda 100644 --- a/arch/tile/lib/exports.c +++ b/arch/tile/lib/exports.c @@ -18,14 +18,6 @@ /* arch/tile/lib/usercopy.S */ #include <linux/uaccess.h> -EXPORT_SYMBOL(__get_user_1); -EXPORT_SYMBOL(__get_user_2); -EXPORT_SYMBOL(__get_user_4); -EXPORT_SYMBOL(__get_user_8); -EXPORT_SYMBOL(__put_user_1); -EXPORT_SYMBOL(__put_user_2); -EXPORT_SYMBOL(__put_user_4); -EXPORT_SYMBOL(__put_user_8); EXPORT_SYMBOL(strnlen_user_asm); EXPORT_SYMBOL(strncpy_from_user_asm); EXPORT_SYMBOL(clear_user_asm); diff --git a/arch/tile/lib/usercopy_32.S b/arch/tile/lib/usercopy_32.S index 979f76d8374..b62d002af00 100644 --- a/arch/tile/lib/usercopy_32.S +++ b/arch/tile/lib/usercopy_32.S @@ -19,82 +19,6 @@ /* Access user memory, but use MMU to avoid propagating kernel exceptions. */ - .pushsection .fixup,"ax" - -get_user_fault: - { move r0, zero; move r1, zero } - { movei r2, -EFAULT; jrp lr } - ENDPROC(get_user_fault) - -put_user_fault: - { movei r0, -EFAULT; jrp lr } - ENDPROC(put_user_fault) - - .popsection - -/* - * __get_user_N functions take a pointer in r0, and return 0 in r2 - * on success, with the value in r0; or else -EFAULT in r2. - */ -#define __get_user_N(bytes, LOAD) \ - STD_ENTRY(__get_user_##bytes); \ -1: { LOAD r0, r0; move r1, zero; move r2, zero }; \ - jrp lr; \ - STD_ENDPROC(__get_user_##bytes); \ - .pushsection __ex_table,"a"; \ - .word 1b, get_user_fault; \ - .popsection - -__get_user_N(1, lb_u) -__get_user_N(2, lh_u) -__get_user_N(4, lw) - -/* - * __get_user_8 takes a pointer in r0, and returns 0 in r2 - * on success, with the value in r0/r1; or else -EFAULT in r2. - */ - STD_ENTRY(__get_user_8); -1: { lw r0, r0; addi r1, r0, 4 }; -2: { lw r1, r1; move r2, zero }; - jrp lr; - STD_ENDPROC(__get_user_8); - .pushsection __ex_table,"a"; - .word 1b, get_user_fault; - .word 2b, get_user_fault; - .popsection - -/* - * __put_user_N functions take a value in r0 and a pointer in r1, - * and return 0 in r0 on success or -EFAULT on failure. - */ -#define __put_user_N(bytes, STORE) \ - STD_ENTRY(__put_user_##bytes); \ -1: { STORE r1, r0; move r0, zero }; \ - jrp lr; \ - STD_ENDPROC(__put_user_##bytes); \ - .pushsection __ex_table,"a"; \ - .word 1b, put_user_fault; \ - .popsection - -__put_user_N(1, sb) -__put_user_N(2, sh) -__put_user_N(4, sw) - -/* - * __put_user_8 takes a value in r0/r1 and a pointer in r2, - * and returns 0 in r0 on success or -EFAULT on failure. - */ -STD_ENTRY(__put_user_8) -1: { sw r2, r0; addi r2, r2, 4 } -2: { sw r2, r1; move r0, zero } - jrp lr - STD_ENDPROC(__put_user_8) - .pushsection __ex_table,"a" - .word 1b, put_user_fault - .word 2b, put_user_fault - .popsection - - /* * strnlen_user_asm takes the pointer in r0, and the length bound in r1. * It returns the length, including the terminating NUL, or zero on exception. diff --git a/arch/tile/lib/usercopy_64.S b/arch/tile/lib/usercopy_64.S index 2ff44f87b78..adb2dbbc70c 100644 --- a/arch/tile/lib/usercopy_64.S +++ b/arch/tile/lib/usercopy_64.S @@ -19,55 +19,6 @@ /* Access user memory, but use MMU to avoid propagating kernel exceptions. */ - .pushsection .fixup,"ax" - -get_user_fault: - { movei r1, -EFAULT; move r0, zero } - jrp lr - ENDPROC(get_user_fault) - -put_user_fault: - { movei r0, -EFAULT; jrp lr } - ENDPROC(put_user_fault) - - .popsection - -/* - * __get_user_N functions take a pointer in r0, and return 0 in r1 - * on success, with the value in r0; or else -EFAULT in r1. - */ -#define __get_user_N(bytes, LOAD) \ - STD_ENTRY(__get_user_##bytes); \ -1: { LOAD r0, r0; move r1, zero }; \ - jrp lr; \ - STD_ENDPROC(__get_user_##bytes); \ - .pushsection __ex_table,"a"; \ - .quad 1b, get_user_fault; \ - .popsection - -__get_user_N(1, ld1u) -__get_user_N(2, ld2u) -__get_user_N(4, ld4u) -__get_user_N(8, ld) - -/* - * __put_user_N functions take a value in r0 and a pointer in r1, - * and return 0 in r0 on success or -EFAULT on failure. - */ -#define __put_user_N(bytes, STORE) \ - STD_ENTRY(__put_user_##bytes); \ -1: { STORE r1, r0; move r0, zero }; \ - jrp lr; \ - STD_ENDPROC(__put_user_##bytes); \ - .pushsection __ex_table,"a"; \ - .quad 1b, put_user_fault; \ - .popsection - -__put_user_N(1, st1) -__put_user_N(2, st2) -__put_user_N(4, st4) -__put_user_N(8, st) - /* * strnlen_user_asm takes the pointer in r0, and the length bound in r1. * It returns the length, including the terminating NUL, or zero on exception. |