Messages in this thread | | | Date | Sun, 06 Jul 2008 17:23:47 +0800 | From | Lai Jiangshan <> | Subject | Re: [RFC][PATCH] rcu classic: new algorithm for callbacks-processing |
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Paul E. McKenney wrote:
> > You tried this without your changes and it passed, correct? > > Never forget to test the base kernel. ;-) >
Thanks, but I make some mistake here.
I tested the base kernel, no bug occurred. So I try to find out bugs in my changes in 2 weeks.
I added debug codes and these codes showed all processing are right and no callback broke its grace period but the bug still occurred.
When I was puzzled after 2 weeks, I looked back the base kernel that I had tested, and I found that I forget to set CONFIG_NO_HZ=y.
Then I set CONFIG_NO_HZ=y in the base kernel, and the bug occurred. It's exactly as the bug when my patch applied.
I have reported this bug here: http://lkml.org/lkml/2008/7/3/24
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