Messages in this thread |  | | From | Rusty Russell <> | Subject | Re: [Lse-tech] Re: RFC: patch to allow lock-free traversal of lists with insertion | Date | Sun, 14 Oct 2001 06:44:23 +1000 |
| |
In message <k23d4njs9x.fsf@zero.aec.at> you write: > In article <Pine.LNX.4.33.0110131015410.8707-100000@penguin.transmeta.com>, > Linus Torvalds <torvalds@transmeta.com> writes: > > > - nobody has shown a case where existing normal locking ends up being > > really a huge problem, and where RCU clearly helps. > > The poster child of such a case is module unloading. Keeping reference > counts for every even non sleeping use of a module is very painful.
Well, module unloading requires only a small fraction of the read copy update infrastructure (synchronize_kernel()), and can be implemented without any scheduler changes, as it's not at all speed critical.
If nothing else, this thread has served to make more kernel hackers aware of the technique, so they can try it themselves as desired.
Cheers, Rusty. -- Premature optmztion is rt of all evl. --DK - 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/
|  |