Messages in this thread |  | | | Date | Mon, 13 Feb 2012 09:23:11 -0800 | | From | Tejun Heo <> | | Subject | Re: [PATCH] percpu: use raw_local_irq_* in _this_cpu op |
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On Mon, Feb 13, 2012 at 07:03:38PM +0800, Ming Lei wrote: > It doesn't make sense to trace irq off or do irq flags > lock proving inside 'this_cpu' operations, so replace local_irq_* > with raw_local_irq_* in 'this_cpu' op. > > Also the patch fixes one lockdep warning[1], which is caused > by the added local_irq_save/restore(flags) in this_cpu_inc > called by __debug_atomic_inc: kernel/lockdep.c
I think this isn't gonna hurt anything but I don't understand why the lockdep warning is triggering when using traced version. Can you please explain that in a bit more detail in the patch description?
Thank you.
-- tejun
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