Messages in this thread |  | | From | Arnd Bergmann <> | Subject | Re: spinlock assertion macros | Date | Fri, 12 Jul 2002 21:24:40 +0200 |
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Daniel Phillips wrote:
> Any idea how one might implement NEVER_SLEEPS()? Maybe as:
Why would you want that? AFAICS there are two kinds of "never sleeping" functions: 1. those that don't sleep but don't care about it and 2. those that must not sleep because a lock is held.
For 1. no point marking it because it might change without being a bug. You also don't want to mark every function in the kernel SLEEPS() or NEVER_SLEEPS().
For 2. we already have MUST_HOLD(foo) or similar, which implicitly means it can never sleep. The same is true for functions with spinlocks or preempt_disable around their body.
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