On Thu, 2014-07-03 at 09:31 +0200, Peter Zijlstra wrote: > On Wed, Jul 02, 2014 at 10:30:03AM -0700, Jason Low wrote: > > Would potentially reducing the size of the rw semaphore structure by 32 > > bits (for all architectures using optimistic spinning) be a nice > > benefit? > > Possibly, although I had a look at the mutex structure and we didn't > have a hole to place it in, unlike what you found with the rwsem.
Yeah, and currently struct rw_semaphore is the largest lock we have in the kernel. Shaving off space is definitely welcome. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
