Re: Why kmem_cache_free occupy CPU for more than 10 seconds?

[Badari Pulavarty]

On Wed, 2007-04-11 at 18:10 +0800, Zhao Forrest wrote:
> On 4/11/07, Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> wrote:
> > On Wed, 2007-04-11 at 02:53 -0700, Paul Jackson wrote:
> > > I'm confused - which end of ths stack is up?
> > >
> > > cpuset_exit doesn't call do_exit, rather it's the other
> > > way around.  But put_files_struct doesn't call do_exit,
> > > rather do_exit calls __exit_files calls put_files_struct.
> >
> > I'm guessing its x86_64 which generates crap traces.
> >
> Yes, it's x86_64. Is there a reliable way to generate stack traces under x86_64?
> Can enabling "[ ] Compile the kernel with frame pointers" help?

CONFIG_UNWIND_INFO=y
CONFIG_STACK_UNWIND=y

should help.

Thanks,
Badari



-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/