Messages in this thread | | | Date | Sat, 8 Jan 2005 22:27:31 -0800 | From | "Paul E. McKenney" <> | Subject | Re: [PATCH] add feature-removal-schedule.txt documentation |
| |
On Sat, Jan 08, 2005 at 09:46:34PM +0000, Alan Cox wrote: > On Sad, 2005-01-08 at 18:32, Paul E. McKenney wrote: > > What: call_rcu(), call_rcu_bh(), and synchronize_kernel() change from > > EXPORT_SYMBOL() to EXPORT_SYMBOL_GPL(). > > When: January 9, 2006 > > Files: kernel/rcupdate.c > > Why: There are no known environments supporting RCU from which > > one could reasonably expect to port a non-GPL kernel module > > or driver to Linux. > > IBM might want to also note that anyone wanting to do so needs an IBM > patent license for non GPL use ..
Last time I checked with IBM's lawyers, they were not interested in doing so. Nonetheless, you are correct, non-GPL use of RCU would require a conversation with IBM. And in fact the five relevant patents (one lapsed) are called out in Documentation/RCU/RTFP.txt. The four non-lapsed patents are called out as "contributed under GPL", so I think that we are covered.
Thanx, Paul - 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/
| |