linux-toradex.git/arch/tile/include/asm/atomic.h, branch v3.0.2

arch/tile: use better definitions of xchg() and cmpxchg()

2011-05-20T02:55:49+00:00

These definitions use a ({}) construct to avoid some cases where
we were getting warnings about unused return values.  We also
promote the definition to the common , since it applies
to both the 32- and 64-bit atomics.

In addition, define __HAVE_ARCH_CMPXCHG for TILE-Gx since it has
efficient direct atomic instructions.

Signed-off-by: Chris Metcalf

arch/tile: Fix atomic_read() definition to use ACCESS_ONCE

2011-02-25T13:46:38+00:00

This adds the volatile cast which forces the compiler to emit the load.
Suggested by Peter Zijlstra .

Signed-off-by: Chris Metcalf

arch/tile: core support for Tilera 32-bit chips.

2010-06-04T21:11:18+00:00

This change is the core kernel support for TILEPro and TILE64 chips.
No driver support (except the console driver) is included yet.

This includes the relevant Linux headers in asm/; the low-level
low-level "Tile architecture" headers in arch/, which are
shared with the hypervisor, etc., and are build-system agnostic;
and the relevant hypervisor headers in hv/.

Signed-off-by: Chris Metcalf 
Acked-by: Arnd Bergmann 
Acked-by: FUJITA Tomonori 
Reviewed-by: Paul Mundt