Re: frequent lockups in 3.18rc4

From: Linus Torvalds
Date: Sun Nov 30 2014 - 19:21:24 EST


On Sun, Nov 30, 2014 at 1:21 PM, DÃniel Fraga <fragabr@xxxxxxxxx> wrote:
>
> Yes, but "menuconfig" doesn't allow me to disable it (it's
> always checked). Newbie question: does TREE_PREEMPT_RCU depends on any
> other option? Thanks.

Maybe you'll have to turn off RCU_CPU_STALL_VERBOSE first.

Although I think you should be able to just edit the .config file,
delete the like that says

CONFIG_TREE_PREEMPT_RCU=y

and then just do a "make oldconfig", and then verify that
TREE_PREEMPT_RCU hasn't been re-enabled by some dependency. But it
shouldn't have, and that "make oldconfig" should get rid of anything
that depends on TREE_PREEMPT_RCU.

Linus
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