Messages in this thread | | | Subject | Re: [PATCH] Fix next_timer_interrupt() for hrtimer | From | john stultz <> | Date | Thu, 23 Feb 2006 16:37:52 -0800 |
| |
On Thu, 2006-02-23 at 16:26 -0800, Tony Lindgren wrote: > + tv = ktime_to_timespec(event); > + > + /* Assume read xtime_lock is held, so we can't use getnstimeofday() */ > + sec = xtime.tv_sec; > + nsec = xtime.tv_nsec; > + while (unlikely(nsec >= NSEC_PER_SEC)) { > + nsec -= NSEC_PER_SEC; > + ++sec; > + } > + tv.tv_sec = sec; > + tv.tv_nsec = nsec;
Er, I think you should be able to nest readers. Thus getnstimeofday() should be safe to call. Or is the comment wrong and you are assuming a write lock is held?
thanks -john
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |