Re: 8-CPU (SMP) #s for lockfree rtcache

Andi Kleen
2002-05-28T15:46:32Z

"David S. Miller" <davem@redhat.com> writes:

> From: Dipankar Sarma <dipankar@in.ibm.com>
> Date: Tue, 28 May 2002 18:28:06 +0530
>
> Well, the last time RCU was discussed, Linus said that he would
> like to see someplace where RCU clearly helps.
>
> Alexey and I are in firm agreement that the routing cache
> clearly benefits from RCU.

The next obvious benefitor IMHO is module unloading. Just putting
a synchronize_kernel() somewhere at the end of sys_delete_modules()
after the destructor makes module unloading much less nasty than it
used to be (yes it doesn't fix all possible module unload races, but a
large share of them and it makes the problem much more controllable)

-Andi