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always_inline timespec_add_ns

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timespec_add_ns is used from the x86-64 vdso, which cannot call out to
other kernel code.  Make sure that timespec_add_ns is always inlined
(and only uses always_inlined functions) to make sure there are no
unexpected calls.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Jeremy Fitzhardinge 2008-06-12 10:48:00 +02:00 committed by Ingo Molnar
parent d5e181f78a
commit 9412e28649
1 changed files with 5 additions and 2 deletions
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7
include/linux/time.h
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@ -170,10 +170,13 @@ extern struct timeval ns_to_timeval(const s64 nsec);
* timespec_add_ns - Adds nanoseconds to a timespec
* @a: pointer to timespec to be incremented
* @ns: unsigned nanoseconds value to be added
*
* This must always be inlined because its used from the x86-64 vdso,
* which cannot call other kernel functions.
*/
static inline void timespec_add_ns(struct timespec *a, u64 ns)
static __always_inline void timespec_add_ns(struct timespec *a, u64 ns)
{
a->tv_sec += iter_div_u64_rem(a->tv_nsec + ns, NSEC_PER_SEC, &ns);
a->tv_sec += __iter_div_u64_rem(a->tv_nsec + ns, NSEC_PER_SEC, &ns);
a->tv_nsec = ns;
}
#endif /* __KERNEL__ */