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[MIPS] Use USECS_PER_SEC / HZ instead of tick_usec in do_gettimeofday.

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The 'tick_usec' is USER_HZ period in usec.  do_gettimeofday() should
use kernel HZ value.
    
Here is a patch for MIPS.  It seems m32r, m68k and sparc have same
problem though their HZ and USER_HZ are same for now.
    
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Atsushi Nemoto 2006-03-01 15:16:26 +09:00 committed by Ralf Baechle
parent 71efa38c0e
commit 800d11420d
1 changed files with 3 additions and 2 deletions
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5
arch/mips/kernel/time.c
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@ -163,7 +163,7 @@ void do_gettimeofday(struct timeval *tv)
unsigned long seq;
unsigned long lost;
unsigned long usec, sec;
unsigned long max_ntp_tick = tick_usec - tickadj;
unsigned long max_ntp_tick;
do {
seq = read_seqbegin(&xtime_lock);
@ -178,12 +178,13 @@ void do_gettimeofday(struct timeval *tv)
* Better to lose some accuracy than have time go backwards..
*/
if (unlikely(time_adjust < 0)) {
max_ntp_tick = (USEC_PER_SEC / HZ) - tickadj;
usec = min(usec, max_ntp_tick);
if (lost)
usec += lost * max_ntp_tick;
} else if (unlikely(lost))
usec += lost * tick_usec;
usec += lost * (USEC_PER_SEC / HZ);
sec = xtime.tv_sec;
usec += (xtime.tv_nsec / 1000);