diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Makefile | 2 | ||||
| -rw-r--r-- | lib/reciprocal_div.c | 9 |
2 files changed, 10 insertions, 1 deletions
diff --git a/lib/Makefile b/lib/Makefile index 2d6106af53c..c9ec8f11e83 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -5,7 +5,7 @@ lib-y := ctype.o string.o vsprintf.o cmdline.o \ bust_spinlocks.o rbtree.o radix-tree.o dump_stack.o \ idr.o div64.o int_sqrt.o bitmap.o extable.o prio_tree.o \ - sha1.o irq_regs.o + sha1.o irq_regs.o reciprocal_div.o lib-$(CONFIG_MMU) += ioremap.o lib-$(CONFIG_SMP) += cpumask.o diff --git a/lib/reciprocal_div.c b/lib/reciprocal_div.c new file mode 100644 index 00000000000..6a3bd48fa2a --- /dev/null +++ b/lib/reciprocal_div.c @@ -0,0 +1,9 @@ +#include <asm/div64.h> +#include <linux/reciprocal_div.h> + +u32 reciprocal_value(u32 k) +{ + u64 val = (1LL << 32) + (k - 1); + do_div(val, k); + return (u32)val; +} |