Quoting Ian McDonald:
| > --- a/net/dccp/dccp.h
| > +++ b/net/dccp/dccp.h
| > @@ -421,6 +421,11 @@ static inline suseconds_t timeval_delta(
| > return secs * USEC_PER_SEC + usecs;
| > }
| >
| > +static inline s64 ktime_delta(ktime_t later, ktime_t earlier)
| > +{
| > + return ktime_to_us(ktime_sub(later, earlier));
| > +}
| > +
| > static inline void timeval_add_usecs(struct timeval *tv,
| > const suseconds_t usecs)
| > {
|
| Judging from patches I've seen rejected recently I'd say this should
| be shifted into the same place as ktime_sub is defined. Also rename to
| ktime_sub_us.
|
ktime_sub is defined in include/linux/ktime.h - the file only contains generic
definitions, everything is in nanoseconds, struct timeval, or struct timespec.
The other place is include/linux/skbuff.h, where net_timedelta() is defined.
This is probably due to the skb->tstamp field - as a utility function to be used
with skbs.
Neither place seems appropriate for above function, it is more specific than the
ones in ktime.h. I am at a loss where else if not the DCCP code, where it is
specifically used, to place it.
The name was chosen for consistency with timeval_delta(), which is the current
function for microsecond time differences in net/dccp/dccp.h.
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