http://bugzilla.kernel.org/show_bug.cgi?id=13087
--- Comment #19 from alexs <alex....@intel.com> 2009-04-16 10:06:33 ---
>
> So the printk in acpi_idle_enter_simple inserts some delay needed to get the
> box to boot (or to skip some other non-recovering wait)...
Bruno:
I am wondering the ktime_get_real really can return in above function. In fact,
the ktime_get_real should call getnstimeofday() in kernel/time/timekeeping.c
file if the CONFIG_GENERIC_TIME was set in kernel config.
Maybe it hang in the following while cycle in getnstimeofday function:
// do {
// seq = read_seqbegin(&xtime_lock);
*ts = xtime;
/* read clocksource: */
cycle_now = clocksource_read(clock);
/* calculate the delta since the last update_wall_time: */
cycle_delta = (cycle_now - clock->cycle_last) & clock->mask;
/* convert to nanoseconds: */
nsecs = cyc2ns(clock, cycle_delta);
// } while (read_seqretry(&xtime_lock, seq));
So would you like to comments the "do" "while" and "seq = .." line as above.
and try again?
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