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authorJens Axboe <jens.axboe@oracle.com>2010-05-21 21:27:26 +0200
committerJens Axboe <jens.axboe@oracle.com>2010-05-21 21:27:26 +0200
commitee9a3607fb03e804ddf624544105f4e34260c380 (patch)
treece41b6e0fa10982a306f6c142a92dbf3c9961284 /arch/arm/kernel/time.c
parentpipe: set lower and upper limit on max pages in the pipe page array (diff)
parentMerge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jac... (diff)
downloadlinux-ee9a3607fb03e804ddf624544105f4e34260c380.tar.xz
linux-ee9a3607fb03e804ddf624544105f4e34260c380.zip
Merge branch 'master' into for-2.6.35
Conflicts: fs/ext3/fsync.c Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'arch/arm/kernel/time.c')
-rw-r--r--arch/arm/kernel/time.c70
1 files changed, 6 insertions, 64 deletions
diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c
index 28753805d2d1..38c261f9951c 100644
--- a/arch/arm/kernel/time.c
+++ b/arch/arm/kernel/time.c
@@ -72,12 +72,15 @@ unsigned long profile_pc(struct pt_regs *regs)
EXPORT_SYMBOL(profile_pc);
#endif
-#ifndef CONFIG_GENERIC_TIME
-static unsigned long dummy_gettimeoffset(void)
+#ifdef CONFIG_ARCH_USES_GETTIMEOFFSET
+u32 arch_gettimeoffset(void)
{
+ if (system_timer->offset != NULL)
+ return system_timer->offset() * 1000;
+
return 0;
}
-#endif
+#endif /* CONFIG_ARCH_USES_GETTIMEOFFSET */
#ifdef CONFIG_LEDS_TIMER
static inline void do_leds(void)
@@ -93,63 +96,6 @@ static inline void do_leds(void)
#define do_leds()
#endif
-#ifndef CONFIG_GENERIC_TIME
-void do_gettimeofday(struct timeval *tv)
-{
- unsigned long flags;
- unsigned long seq;
- unsigned long usec, sec;
-
- do {
- seq = read_seqbegin_irqsave(&xtime_lock, flags);
- usec = system_timer->offset();
- sec = xtime.tv_sec;
- usec += xtime.tv_nsec / 1000;
- } while (read_seqretry_irqrestore(&xtime_lock, seq, flags));
-
- /* usec may have gone up a lot: be safe */
- while (usec >= 1000000) {
- usec -= 1000000;
- sec++;
- }
-
- tv->tv_sec = sec;
- tv->tv_usec = usec;
-}
-
-EXPORT_SYMBOL(do_gettimeofday);
-
-int do_settimeofday(struct timespec *tv)
-{
- time_t wtm_sec, sec = tv->tv_sec;
- long wtm_nsec, nsec = tv->tv_nsec;
-
- if ((unsigned long)tv->tv_nsec >= NSEC_PER_SEC)
- return -EINVAL;
-
- write_seqlock_irq(&xtime_lock);
- /*
- * This is revolting. We need to set "xtime" correctly. However, the
- * value in this location is the value at the most recent update of
- * wall time. Discover what correction gettimeofday() would have
- * done, and then undo it!
- */
- nsec -= system_timer->offset() * NSEC_PER_USEC;
-
- wtm_sec = wall_to_monotonic.tv_sec + (xtime.tv_sec - sec);
- wtm_nsec = wall_to_monotonic.tv_nsec + (xtime.tv_nsec - nsec);
-
- set_normalized_timespec(&xtime, sec, nsec);
- set_normalized_timespec(&wall_to_monotonic, wtm_sec, wtm_nsec);
-
- ntp_clear();
- write_sequnlock_irq(&xtime_lock);
- clock_was_set();
- return 0;
-}
-
-EXPORT_SYMBOL(do_settimeofday);
-#endif /* !CONFIG_GENERIC_TIME */
#ifndef CONFIG_GENERIC_CLOCKEVENTS
/*
@@ -214,10 +160,6 @@ device_initcall(timer_init_sysfs);
void __init time_init(void)
{
-#ifndef CONFIG_GENERIC_TIME
- if (system_timer->offset == NULL)
- system_timer->offset = dummy_gettimeoffset;
-#endif
system_timer->init();
}