Re: [PATCH -rt 1/8] introduce PICK_FUNCTION

Nick Piggin
2007-08-28T23:44:51Z

Daniel Walker wrote:
> PICK_FUNCTION() is similar to the other PICK_OP style macros, and was
> created to replace them all. I used variable argument macros to handle
> PICK_FUNC_2ARG/PICK_FUNC_1ARG. Otherwise the marcos are similar to the
> original macros used for semaphores. The entire system is used to do a
> compile time switch between two different locking APIs. For example,
> real spinlocks (raw_spinlock_t) and mutexes (or sleeping spinlocks).
>
> This new macro replaces all the duplication from lock type to lock type.
> The result of this patch, and the next two, is a fairly nice simplification,
> and consolidation. Although the seqlock changes are larger than the originals
> I think over all the patchset is worth while.
>
> Incorporated peterz's suggestion to not require TYPE_EQUAL() to only
> use pointers.

How come this is cc'ed to lkml? Is it something that is relevant to
the mainline kernel... or?

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SUSE Labs, Novell Inc.