msleep() in interrupt handler?

[Jeff Haran]

From: kernelnewbies-bounces at kernelnewbies.org [mailto:kernelnewbies-bounces at kernelnewbies.org] On Behalf Of Woody Wu
Sent: Wednesday, August 19, 2015 4:47 PM
To: kernelnewbies
Subject: msleep() in interrupt handler?

Hi List,

What will happen if call msleep() in an interrupt handler? I knew the msleep() will cause the calling process to sleep, but in the context of interruption, there is no process, so I am wondering what is getting 'sleep' in this situation.

-woody


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If you are lucky you’ll get a message along the lines of “scheduling while atomic” on your console to let you know you’ve blown it. At least that’s what I’ve seen when I’ve blown it like that. 8^)

Jeff Haran
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