On Sat, Dec 18, 2010 at 05:16:52AM +0900, Kuwahara,T. wrote: > On 12/17/10, Richard Cochran <richardcochran@xxxxxxxxx> wrote: > > This patch adds a new mode bit into the timex structure. When set, the bit > > instructs the kernel to add the given time value to the current time. > > > > The proposed new control mode, ADJ_SETOFFSET, is logically the same as > ADJ_OFFSET with timex.constant == -INFINITY. So it is possible to do > the same thing without risking forward compatibility. (I mean by "risking > forward compatibility" that the mode bit 0x0040 may be defined differently > by the upstream maintainer anytime in the future.) Can you please elaborate? I don't see any way to use timex.constant with ADJ_OFFSET in order to correct a time offset. The 'time_constant' in kernel/time/ntp.c is restricted to the interval [0..MAXTC], and MAXTC is 10 in timex.h. Richard -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
