op-kernel-dev - Development kernel branch for OpenPOWER systems

	Commit message (Collapse)	Author	Age	Files	Lines
*	powerpc: Make rwsem use "long" type	Benjamin Herrenschmidt	2010-08-24	1	-27/+37
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	This makes the 64-bit kernel use 64-bit signed integers for the counter (effectively supporting 32-bit of active count in the semaphore), thus avoiding things like overflow of the mmap_sem if you use a really crazy number of threads Note: Ideally the type in the structure should be atomic_long_t rather than "long". However, there's some nasty issues with that. It needs to be initialized statically -and- lib/rwsem.c does things like sem->count = RWSEM_UNLOCKED_VALUE; Now, if you mix in the fact that atomic_* types are actually structures with one member and note typedefs of a scalar, it makes its really nasty. So I stuck to what we did before using a long and casts for now. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
*	powerpc: Move include files to arch/powerpc/include/asm	Stephen Rothwell	2008-08-04	1	-0/+173
	from include/asm-powerpc. This is the result of a mkdir arch/powerpc/include/asm git mv include/asm-powerpc/* arch/powerpc/include/asm Followed by a few documentation/comment fixups and a couple of places where <asm-powepc/...> was being used explicitly. Of the latter only one was outside the arch code and it is a driver only built for powerpc. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>