Messages in this thread | | | Subject | Re: [announce 7/7] fbsplash - documentation | From | Benjamin Herrenschmidt <> | Date | Fri, 11 Mar 2005 23:27:47 +1100 |
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> > I don't understand. Does the kernel code need to wait for the helper > to finish while holding the semaphore? AFAICS, the helper is completely > asynchronous, so it can simply do its job when the kernel has given > up the semaphore.
It should be totally async witout any sem. there is no guarantee that userspace is even available at the time you do the call.
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