Messages in this thread | | | Date | Mon, 23 Nov 2015 18:57:54 +0100 | From | Peter Zijlstra <> | Subject | Re: [PATCH] sched: idle: move need_resched check after function rcu_idle_enter |
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On Mon, Nov 23, 2015 at 09:42:06AM -0800, Lianwei Wang wrote: > Issue was found on ARM/Qcom platform, but I think it is applicable to > other platforms as well. I add a BUG_ON after rcu_enter_idle to catch > it. The Qcom's cpuidle driver is not in mainline kernel yet.
A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?
And I suspect that your qualcom thing doesn't have TIF_POLLING_NRFLAG either, which would introduce another need_resched() test after the rcu_enter_idle() call.
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