diff options
| author | David S. Miller <davem@davemloft.net> | 2009-09-24 15:13:11 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-09-24 15:13:11 -0700 |
| commit | 8b3f6af86378d0a10ca2f1ded1da124aef13b62c (patch) | |
| tree | de6ca90295730343c495be8d98be8efa322140ef /kernel/time.c | |
| parent | 139d6065c83071d5f66cd013a274a43699f8e2c1 (diff) | |
| parent | 94e0fb086fc5663c38bbc0fe86d698be8314f82f (diff) | |
Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Conflicts:
drivers/staging/Kconfig
drivers/staging/Makefile
drivers/staging/cpc-usb/TODO
drivers/staging/cpc-usb/cpc-usb_drv.c
drivers/staging/cpc-usb/cpc.h
drivers/staging/cpc-usb/cpc_int.h
drivers/staging/cpc-usb/cpcusb.h
Diffstat (limited to 'kernel/time.c')
| -rw-r--r-- | kernel/time.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/kernel/time.c b/kernel/time.c index 29511943871..2e2e469a7fe 100644 --- a/kernel/time.c +++ b/kernel/time.c @@ -370,13 +370,20 @@ EXPORT_SYMBOL(mktime); * 0 <= tv_nsec < NSEC_PER_SEC * For negative values only the tv_sec field is negative ! */ -void set_normalized_timespec(struct timespec *ts, time_t sec, long nsec) +void set_normalized_timespec(struct timespec *ts, time_t sec, s64 nsec) { while (nsec >= NSEC_PER_SEC) { + /* + * The following asm() prevents the compiler from + * optimising this loop into a modulo operation. See + * also __iter_div_u64_rem() in include/linux/time.h + */ + asm("" : "+rm"(nsec)); nsec -= NSEC_PER_SEC; ++sec; } while (nsec < 0) { + asm("" : "+rm"(nsec)); nsec += NSEC_PER_SEC; --sec; } |