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net: socket: move ktime2ts to ktime header api

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Currently, ktime2ts is a small helper function that is only used in
net/socket.c. Move this helper into the ktime API as a small inline
function, so that i) it's maintained together with ktime routines,
and ii) also other files can make use of it. The function is named
ktime_to_timespec_cond() and placed into the generic part of ktime,
since we internally make use of ktime_to_timespec(). ktime_to_timespec()
itself does not check the ktime variable for zero, hence, we name
this function ktime_to_timespec_cond() for only a conditional
conversion, and adapt its users to it.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Borkmann
2013-04-16 01:29:10 +00:00
committed by David S. Miller
parent cf27014866
commit 6e94d1ef37
2 changed files with 22 additions and 16 deletions
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18
include/linux/ktime.h
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@@ -330,6 +330,24 @@ static inline ktime_t ktime_sub_us(const ktime_t kt, const u64 usec)
extern ktime_t ktime_add_safe(const ktime_t lhs, const ktime_t rhs);
/**
* ktime_to_timespec_cond - convert a ktime_t variable to timespec
* format only if the variable contains data
* @kt: the ktime_t variable to convert
* @ts: the timespec variable to store the result in
*
* Returns true if there was a successful conversion, false if kt was 0.
*/
static inline bool ktime_to_timespec_cond(const ktime_t kt, struct timespec *ts)
{
if (kt.tv64) {
*ts = ktime_to_timespec(kt);
return true;
} else {
return false;
}
}
/*
* The resolution of the clocks. The resolution value is returned in
* the clock_getres() system call to give application programmers an