try_to_freeze() called with IRQs disabled on ARM
From: tj@kernel.org (Tejun Heo)
Date: 2011-08-23 22:17:15
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On Wed, Aug 24, 2011 at 12:13 AM, Russell King - ARM Linux [off-list ref] wrote:
Thereby entirely preventing threads from being frozen? ?You're asking me to effectively disable suspend/resume on an architecture where it's heavily used. ?That's not a good idea, and would be an out-right regression.
Eh? So, it's supposed to enter refrigerator with IRQ disabled? Then,
moving might_sleep() inside refrigerator() doesn't help either, does
it? Then we should be doing is,
if (freezing() && IRQ disabled) {
bust on IRQ;
try_to_freeze();
replug IRQ;
}
But, that can't be right. The current code isn't triggering warning
from scheduler code, right? If the above is the case, it should be
triggering that. What am I missing?
--
tejun