Re: [PATCH] rcu: Remove redundant CONFIG_PREEMPT_RCU option

From: Pranith Kumar
Date: Mon Sep 22 2014 - 13:44:44 EST

On Mon, Sep 22, 2014 at 1:01 PM, Paul E. McKenney
<paulmck@xxxxxxxxxxxxxxxxxx> wrote:
> On Mon, Sep 22, 2014 at 12:49:24PM -0400, Pranith Kumar wrote:
>> On Mon, Sep 22, 2014 at 12:25 PM, Josh Triplett <josh@xxxxxxxxxxxxxxxx> wrote:
>> >
>> > I think it would actually make more sense to do this the other way
>> > around, if at all: drop TREE_PREEMPT_RCU in favor of PREEMPT_RCU. The
>> > instances shown here don't care about *which* preemptible RCU
>> > implementation the kernel uses, they just need to behave differently
>> > when preemptible. Let's also not assume that no new RCU implementation
>> > will ever arise superceding TREE_PREEMPT_RCU.
>> That is exactly what I did first and got the following changelog:
>> 51 files changed, 77 insertions(+), 83 deletions(-)
>> compared to
>> 8 files changed, 19 insertions(+), 25 deletions(-)
> Were the bulk of the files defconfig files? These need not be changed,
> the architecture maintainers handle them.

There are only two defconfig files in there. I removed them now. Most
of them are rcutorture config files. I guess that should be fine. I am
sending the patch now.

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