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authorRalf Baechle <ralf@linux-mips.org>2007-08-13 15:26:12 +0100
committerRalf Baechle <ralf@linux-mips.org>2007-10-11 23:46:08 +0100
commitf5ff0a280201c9cbfb6e9eb4bafdb465c2269ed3 (patch)
treeed056a42ec6c7330765fd3ce45c78815c76c2d34
parent4680576edecb640f64936bd9b92add0a56027b61 (diff)
[MIPS] Use generic NTP code for all MIPS platforms
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
-rw-r--r--arch/mips/Kconfig4
-rw-r--r--arch/mips/kernel/time.c24
-rw-r--r--arch/mips/sgi-ip27/ip27-timer.c18
3 files changed, 8 insertions, 38 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 371434dd744..c024113ce28 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -670,6 +670,10 @@ config GENERIC_TIME
bool
default y
+config GENERIC_CMOS_UPDATE
+ bool
+ default y
+
config SCHED_NO_NO_OMIT_FRAME_POINTER
bool
default y
diff --git a/arch/mips/kernel/time.c b/arch/mips/kernel/time.c
index 9a5596bf857..628a8ba6da5 100644
--- a/arch/mips/kernel/time.c
+++ b/arch/mips/kernel/time.c
@@ -67,6 +67,10 @@ unsigned long (*rtc_mips_get_time)(void) = null_rtc_get_time;
int (*rtc_mips_set_time)(unsigned long) = null_rtc_set_time;
int (*rtc_mips_set_mmss)(unsigned long);
+int update_persistent_clock(struct timespec now)
+{
+ return rtc_mips_set_mmss(now.tv_sec);
+}
/* how many counter cycles in a jiffy */
static unsigned long cycles_per_jiffy __read_mostly;
@@ -125,9 +129,6 @@ static void __init c0_hpt_timer_init(void)
int (*mips_timer_state)(void);
void (*mips_timer_ack)(void);
-/* last time when xtime and rtc are sync'ed up */
-static long last_rtc_update;
-
/*
* local_timer_interrupt() does profiling and process accounting
* on a per-CPU basis.
@@ -159,23 +160,6 @@ irqreturn_t timer_interrupt(int irq, void *dev_id)
*/
do_timer(1);
- /*
- * If we have an externally synchronized Linux clock, then update
- * CMOS clock accordingly every ~11 minutes. rtc_mips_set_time() has to be
- * called as close as possible to 500 ms before the new second starts.
- */
- if (ntp_synced() &&
- xtime.tv_sec > last_rtc_update + 660 &&
- (xtime.tv_nsec / 1000) >= 500000 - ((unsigned) TICK_SIZE) / 2 &&
- (xtime.tv_nsec / 1000) <= 500000 + ((unsigned) TICK_SIZE) / 2) {
- if (rtc_mips_set_mmss(xtime.tv_sec) == 0) {
- last_rtc_update = xtime.tv_sec;
- } else {
- /* do it again in 60 s */
- last_rtc_update = xtime.tv_sec - 600;
- }
- }
-
write_sequnlock(&xtime_lock);
/*
diff --git a/arch/mips/sgi-ip27/ip27-timer.c b/arch/mips/sgi-ip27/ip27-timer.c
index 8c3c78c63cc..31346162e9f 100644
--- a/arch/mips/sgi-ip27/ip27-timer.c
+++ b/arch/mips/sgi-ip27/ip27-timer.c
@@ -40,7 +40,6 @@
#define TICK_SIZE (tick_nsec / 1000)
static unsigned long ct_cur[NR_CPUS]; /* What counter should be at next timer irq */
-static long last_rtc_update; /* Last time the rtc clock got updated */
#if 0
static int set_rtc_mmss(unsigned long nowtime)
@@ -113,23 +112,6 @@ again:
update_process_times(user_mode(get_irq_regs()));
- /*
- * If we have an externally synchronized Linux clock, then update
- * RTC clock accordingly every ~11 minutes. Set_rtc_mmss() has to be
- * called as close as possible to when a second starts.
- */
- if (ntp_synced() &&
- xtime.tv_sec > last_rtc_update + 660 &&
- (xtime.tv_nsec / 1000) >= 500000 - ((unsigned) TICK_SIZE) / 2 &&
- (xtime.tv_nsec / 1000) <= 500000 + ((unsigned) TICK_SIZE) / 2) {
- if (rtc_mips_set_time(xtime.tv_sec) == 0) {
- last_rtc_update = xtime.tv_sec;
- } else {
- last_rtc_update = xtime.tv_sec - 600;
- /* do it again in 60 s */
- }
- }
-
write_sequnlock(&xtime_lock);
irq_exit();
}