Messages in this thread | | | Date | Tue, 8 Oct 2013 12:29:18 +0200 | From | Ingo Molnar <> | Subject | Re: [raw v1 0/4] Replace __this_cpu ops with raw_cpu_ops where necessary |
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* Christoph Lameter <cl@linux.com> wrote:
> The kernel can detect __this_cpu ops in preemptible contexts after the > preemption check patchset that I posted last week. > > Here is a selection of patches to fix false positives caused by the > additional checks. So far I have found no bug. Amazing. Looks like there > was some prior work done to shake these things out?
You can probably thank -rt/PREEMPT_RT for such efforts - I think Thomas in particular has hit a couple of genuine bugs with __this_cpu APIs the hard way and then fixed them.
This series, once finished, will allow us to detect such problems cheaper and earlier.
Thanks,
Ingo
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