Re: 2.6.33: ftrace triggers soft lockup

From: AmÃrico Wang
Date: Thu Mar 04 2010 - 23:15:18 EST

On Thu, Mar 4, 2010 at 9:54 PM, Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:
> On Wed, 2010-03-03 at 14:04 +0800, AmÃrico Wang wrote:
>> I am not sure if this is ftrace's fault, but it is ftrace who triggers
>> the soft lockup. On my machine, it is pretty easy, just run:
>> echo function_graph > current_tracer
>> I found this when 2.6.33-rc7, but forgot to report here. I just tried
>> today's
>> Linus tree, it still has this problem.
> So this is not present in 2.6.33-rc6? If you know approximately when it
> appeared, would you be able to do a git bisect on it?

I can't say that because I didn't try -rc6.

Ok, let me try to do a bisect, but since weekend is coming, I can't do
any testing during weekend, so will try it next Monday.

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