Re: [GIT PULL] RCU changes for v3.3

From: Josh Boyer
Date: Wed Mar 07 2012 - 10:49:26 EST


On Wed, Mar 7, 2012 at 10:27 AM, Paul E. McKenney
<paulmck@xxxxxxxxxxxxxxxxxx> wrote:
> On Wed, Mar 07, 2012 at 09:09:39AM -0500, Josh Boyer wrote:
>> On Wed, Mar 7, 2012 at 6:44 AM, Sergey Senozhatsky
>> <sergey.senozhatsky@xxxxxxxxx> wrote:
>> > Hello,
>> > I just hit the same problem.
>> >
>> > Is this patch scheduled for 3.3 until release or will land during 3.4
>> > merge window?
>>
>> There are 3 patches in Paul's 3.4 queue, and another 9 of Steven Rostedt's
>> that fix this.  They'll wind up in 3.4.
>>
>> I looked at reverting the patch that adds this new warning and it doesn't
>> trivially revert.
>
> What are you based on?  I should be able to disable the warning for
> you easily enough.

3.3. I think I tried reverting 00f49e5729af602deb559b0cf293a00b625e8636 and
it failed. Then I locally commented out the WARN_ONCE in the functions which
got rid of that, but we still get a 'suspicious RCU usage' warning when
running powertop. I gave up after that, since it all goes away if we disable
the debugging options and you have fixes queued for 3.4.

josh
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