diff options
Diffstat (limited to 'fs/xfs/xfs_linux.h')
| -rw-r--r-- | fs/xfs/xfs_linux.h | 85 |
1 files changed, 0 insertions, 85 deletions
diff --git a/fs/xfs/xfs_linux.h b/fs/xfs/xfs_linux.h index 592fdf7111cb..044fb0e15390 100644 --- a/fs/xfs/xfs_linux.h +++ b/fs/xfs/xfs_linux.h @@ -212,88 +212,6 @@ static inline kgid_t xfs_gid_to_kgid(__uint32_t gid) #define xfs_sort(a,n,s,fn) sort(a,n,s,fn,NULL) #define xfs_stack_trace() dump_stack() - -/* Move the kernel do_div definition off to one side */ - -#if defined __i386__ -/* For ia32 we need to pull some tricks to get past various versions - * of the compiler which do not like us using do_div in the middle - * of large functions. - */ -static inline __u32 xfs_do_div(void *a, __u32 b, int n) -{ - __u32 mod; - - switch (n) { - case 4: - mod = *(__u32 *)a % b; - *(__u32 *)a = *(__u32 *)a / b; - return mod; - case 8: - { - unsigned long __upper, __low, __high, __mod; - __u64 c = *(__u64 *)a; - __upper = __high = c >> 32; - __low = c; - if (__high) { - __upper = __high % (b); - __high = __high / (b); - } - asm("divl %2":"=a" (__low), "=d" (__mod):"rm" (b), "0" (__low), "1" (__upper)); - asm("":"=A" (c):"a" (__low),"d" (__high)); - *(__u64 *)a = c; - return __mod; - } - } - - /* NOTREACHED */ - return 0; -} - -/* Side effect free 64 bit mod operation */ -static inline __u32 xfs_do_mod(void *a, __u32 b, int n) -{ - switch (n) { - case 4: - return *(__u32 *)a % b; - case 8: - { - unsigned long __upper, __low, __high, __mod; - __u64 c = *(__u64 *)a; - __upper = __high = c >> 32; - __low = c; - if (__high) { - __upper = __high % (b); - __high = __high / (b); - } - asm("divl %2":"=a" (__low), "=d" (__mod):"rm" (b), "0" (__low), "1" (__upper)); - asm("":"=A" (c):"a" (__low),"d" (__high)); - return __mod; - } - } - - /* NOTREACHED */ - return 0; -} -#else -static inline __u32 xfs_do_div(void *a, __u32 b, int n) -{ - __u32 mod; - - switch (n) { - case 4: - mod = *(__u32 *)a % b; - *(__u32 *)a = *(__u32 *)a / b; - return mod; - case 8: - mod = do_div(*(__u64 *)a, b); - return mod; - } - - /* NOTREACHED */ - return 0; -} - /* Side effect free 64 bit mod operation */ static inline __u32 xfs_do_mod(void *a, __u32 b, int n) { @@ -310,10 +228,7 @@ static inline __u32 xfs_do_mod(void *a, __u32 b, int n) /* NOTREACHED */ return 0; } -#endif -#undef do_div -#define do_div(a, b) xfs_do_div(&(a), (b), sizeof(a)) #define do_mod(a, b) xfs_do_mod(&(a), (b), sizeof(a)) static inline __uint64_t roundup_64(__uint64_t x, __uint32_t y) |