RE: [PATCH] time: Provide full featured jiffies_to_nsecs() function

From: Luck, Tony
Date: Mon May 19 2014 - 18:35:39 EST


> Another problem, maybe we should use get_jiffies_64() instead of jiffies
> directly here OR we'll meet wraparound problems on 32bit system. But a
> same problem is that the jiffies_lock is not safe in NMI context...

To quote Winnie the Pooh - "Bother".

Can someone think of a clever way to get a sane 64 bit jiffie value on
32-bit systems (even when we get an NMI in the middle of updating the
64-bit jiffie)?

-Tony
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