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ntp: Move timex validation to timekeeping do_adjtimex call. 

Move logic that does not need the ntp state to be done
in the timekeeping do_adjtimex() call.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
This commit is contained in:
John Stultz 2013-03-22 12:08:52 -07:00
parent aa6f9c595d
commit e4085693f6
3 changed files with 8 additions and 5 deletions
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5
kernel/time/ntp.c
View File

@ -668,11 +668,6 @@ int __do_adjtimex(struct timex *txc)
u32 time_tai, orig_tai; u32 time_tai, orig_tai;
int result; int result;
/* Validate the data before disabling interrupts */
result = ntp_validate_timex(txc);
if (result)
return result;
if (txc->modes & ADJ_SETOFFSET) { if (txc->modes & ADJ_SETOFFSET) {
struct timespec delta; struct timespec delta;
delta.tv_sec = txc->time.tv_sec; delta.tv_sec = txc->time.tv_sec;

1
kernel/time/ntp_internal.h
View File

@ -6,6 +6,7 @@ extern void ntp_clear(void);
/* Returns how long ticks are at present, in ns / 2^NTP_SCALE_SHIFT. */ /* Returns how long ticks are at present, in ns / 2^NTP_SCALE_SHIFT. */
extern u64 ntp_tick_length(void); extern u64 ntp_tick_length(void);
extern int second_overflow(unsigned long secs); extern int second_overflow(unsigned long secs);
extern int ntp_validate_timex(struct timex *);
extern int __do_adjtimex(struct timex *); extern int __do_adjtimex(struct timex *);
extern void __hardpps(const struct timespec *, const struct timespec *); extern void __hardpps(const struct timespec *, const struct timespec *);
#endif /* _LINUX_NTP_INTERNAL_H */ #endif /* _LINUX_NTP_INTERNAL_H */

7
kernel/time/timekeeping.c
View File

@ -1618,6 +1618,13 @@ EXPORT_SYMBOL_GPL(ktime_get_monotonic_offset);
*/ */
int do_adjtimex(struct timex *txc) int do_adjtimex(struct timex *txc)
{ {
int ret;
/* Validate the data before disabling interrupts */
ret = ntp_validate_timex(txc);
if (ret)
return ret;
return __do_adjtimex(txc); return __do_adjtimex(txc);
} }