Re: [PATCH RT 4/5] allow preemption in mem_cgroup_move_account_page_stat
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: 2014-02-14 13:20:03
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* Sebastian Andrzej Siewior | 2014-02-14 14:17:05 [+0100]:
Now, that I look at it again. Isn't it more efficient to keep preemption disabled for this very short time instead instead of invoking migrate_disable() which includes preempt_disable()/enable() and a few more opcodes… Therefore, I drop it again.
I think doing the same for the 1/5 of this series since it also disables migration for a handfull of asm opcodes. Sebastian