aboutsummaryrefslogtreecommitdiff
path: root/lib
diff options
context:
space:
mode:
Diffstat (limited to 'lib')
-rw-r--r--lib/Makefile5
-rw-r--r--lib/div64.c22
-rw-r--r--lib/kobject_uevent.c2
3 files changed, 25 insertions, 4 deletions
diff --git a/lib/Makefile b/lib/Makefile
index 992a39ef9ff..ae57f357fec 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -4,7 +4,7 @@
lib-y := ctype.o string.o vsprintf.o cmdline.o \
rbtree.o radix-tree.o dump_stack.o \
- idr.o div64.o int_sqrt.o bitmap.o extable.o prio_tree.o \
+ idr.o int_sqrt.o bitmap.o extable.o prio_tree.o \
sha1.o irq_regs.o reciprocal_div.o
lib-$(CONFIG_MMU) += ioremap.o
@@ -12,7 +12,8 @@ lib-$(CONFIG_SMP) += cpumask.o
lib-y += kobject.o kref.o kobject_uevent.o klist.o
-obj-y += sort.o parser.o halfmd4.o debug_locks.o random32.o bust_spinlocks.o
+obj-y += div64.o sort.o parser.o halfmd4.o debug_locks.o random32.o \
+ bust_spinlocks.o
ifeq ($(CONFIG_DEBUG_KOBJECT),y)
CFLAGS_kobject.o += -DDEBUG
diff --git a/lib/div64.c b/lib/div64.c
index 365719f8483..b71cf93c529 100644
--- a/lib/div64.c
+++ b/lib/div64.c
@@ -23,7 +23,7 @@
/* Not needed on 64bit architectures */
#if BITS_PER_LONG == 32
-uint32_t __div64_32(uint64_t *n, uint32_t base)
+uint32_t __attribute__((weak)) __div64_32(uint64_t *n, uint32_t base)
{
uint64_t rem = *n;
uint64_t b = base;
@@ -58,4 +58,24 @@ uint32_t __div64_32(uint64_t *n, uint32_t base)
EXPORT_SYMBOL(__div64_32);
+/* 64bit divisor, dividend and result. dynamic precision */
+uint64_t div64_64(uint64_t dividend, uint64_t divisor)
+{
+ uint32_t high, d;
+
+ high = divisor >> 32;
+ if (high) {
+ unsigned int shift = fls(high);
+
+ d = divisor >> shift;
+ dividend >>= shift;
+ } else
+ d = divisor;
+
+ do_div(dividend, d);
+
+ return dividend;
+}
+EXPORT_SYMBOL(div64_64);
+
#endif /* BITS_PER_LONG == 32 */
diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c
index 84272ed77f0..82fc1794b69 100644
--- a/lib/kobject_uevent.c
+++ b/lib/kobject_uevent.c
@@ -293,7 +293,7 @@ EXPORT_SYMBOL_GPL(add_uevent_var);
static int __init kobject_uevent_init(void)
{
uevent_sock = netlink_kernel_create(NETLINK_KOBJECT_UEVENT, 1, NULL,
- THIS_MODULE);
+ NULL, THIS_MODULE);
if (!uevent_sock) {
printk(KERN_ERR