uml: use *SEC_PER_*SEC constants
There are various uses of powers of 1000, plus the odd BILLION constant in the
time code. However, there are perfectly good definitions of *SEC_PER_*SEC in
linux/time.h which can be used instaed.
These are replaced directly in kernel code. Userspace code imports those
constants as UM_*SEC_PER_*SEC and uses these.
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/arch/um/os-Linux/time.c b/arch/um/os-Linux/time.c
index 574b134..e34e1ef 100644
--- a/arch/um/os-Linux/time.c
+++ b/arch/um/os-Linux/time.c
@@ -14,7 +14,7 @@
int set_interval(void)
{
- int usec = 1000000/UM_HZ;
+ int usec = UM_USEC_PER_SEC / UM_HZ;
struct itimerval interval = ((struct itimerval) { { 0, usec },
{ 0, usec } });
@@ -26,11 +26,11 @@
int timer_one_shot(int ticks)
{
- unsigned long usec = ticks * 1000000 / UM_HZ;
- unsigned long sec = usec / 1000000;
+ unsigned long usec = ticks * UM_USEC_PER_SEC / UM_HZ;
+ unsigned long sec = usec / UM_USEC_PER_SEC;
struct itimerval interval;
- usec %= 1000000;
+ usec %= UM_USEC_PER_SEC;
interval = ((struct itimerval) { { 0, 0 }, { sec, usec } });
if (setitimer(ITIMER_VIRTUAL, &interval, NULL) == -1)
@@ -78,8 +78,8 @@
void idle_sleep(unsigned long long nsecs)
{
- struct timespec ts = { .tv_sec = nsecs / BILLION,
- .tv_nsec = nsecs % BILLION };
+ struct timespec ts = { .tv_sec = nsecs / UM_NSEC_PER_SEC,
+ .tv_nsec = nsecs % UM_NSEC_PER_SEC };
if (nanosleep(&ts, &ts) == 0)
alarm_handler(SIGVTALRM, NULL);