linux-toradex.git/arch/arc/include/asm/atomic.h, branch v3.18.16

ARC: unbork !LLSC build

2015-06-10T17:42:46+00:00

[ Upstream commit daaf40e53b5dbdf75255d58a45ce8ac65ca511a8 ]

Fixes: f7d11e93ee97a locking,arch,arc: Fold atomic_ops
Cc:  # 3.18
Signed-off-by: Vineet Gupta 
Signed-off-by: Sasha Levin

Merge tag 'arc-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc

2014-10-21T14:50:02+00:00

Pull ARC updates from Vineet Gupta:
 "Sorry for the late pull request.  Current stuff was ready for a while
  but I was hoping to squeeze in support for almost ready ARC SDP
  platform (and avoid a 2nd pull request), however it seems there are
  still some loose ends which warrant more time.

   - Platform code reduction/moving-up (TB10X no longer needs any
     callbacks)
   - updated boot printing
   - kgdb update for arc gdb 7.5
   - bug fixes (some marked for stable)
   - more code refactoring/consolidation"

* tag 'arc-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARC: boot: cpu feature print enhancements
  ARC: boot: consolidate cross-checking of h/w and s/w
  ARC: unbork FPU save/restore
  ARC: remove extraneous __KERNEL__ guards
  ARC: Update order of registers in KGDB to match GDB 7.5
  ARC: Remove unneeded Kconfig entry NO_DMA
  ARC: BUG() dumps stack after @msg (@msg now same as in generic BUG))
  ARC: refactoring: reduce the scope of some local vars
  ARC: remove gcc mpy heuristics
  ARC: RIP @running_on_hw
  ARC: Update comments about uncached address space
  ARC: rename kconfig option for unaligned emulation
  ARC: [nsimosci] Allow "headless" models to boot
  ARC: [arcfpga] Get rid of ARC_BOARD_ANGEL4 and ARC_BOARD_ML509
  ARC: [arcfpga] Remove more dead code
  ARC: [plat*] move code out of .init_machine into common
  ARC: [arcfpga] consolidate machine description, DT
  ARC: Allow SMP kernel to build/boot on UP-only infrastructure

ARC: remove extraneous KERNEL guards

2014-10-13T09:16:20+00:00

Verified by doing make headers_install as none of these files are
exported to userspace

locking,arch,arc: Fold atomic_ops

2014-08-14T10:48:03+00:00

Many of the atomic op implementations are the same except for one
instruction; fold the lot into a few CPP macros and reduce LoC.

This also prepares for easy addition of new ops.

Signed-off-by: Peter Zijlstra 
Cc: Linus Torvalds 
Cc: Paul E. McKenney 
Cc: Vineet Gupta 
Link: http://lkml.kernel.org/r/20140508135851.886055622@infradead.org
Signed-off-by: Ingo Molnar

arch,arc: Convert smp_mb__*()

2014-04-18T09:40:31+00:00

The arc mb() implementation is a compiler barrier(), therefore it all
doesn't matter one way or the other. Simply remove the existing
definitions and use whatever is generated by the defaults.

Signed-off-by: Peter Zijlstra 
Acked-by: Paul E. McKenney 
Link: http://lkml.kernel.org/n/tip-ua48a59wri3ybz1rz8i7uvbr@git.kernel.org
Cc: Linus Torvalds 
Cc: Vineet Gupta 
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar

arch: Move smp_mb__{before,after}_atomic_{inc,dec}.h into asm/atomic.h

2014-01-12T09:37:14+00:00

Move the barriers functions that depend on the atomic implementation
into the atomic implementation.

Reviewed-by: Paul E. McKenney 
Signed-off-by: Peter Zijlstra 
Acked-by: Vineet Gupta  [for arch/arc bits]
Cc: Peter Zijlstra 
Cc: Linus Torvalds 
Cc: Andrew Morton 
Cc: Thomas Gleixner 
Cc: Paul E. McKenney 
Link: http://lkml.kernel.org/r/20131213150640.786183683@infradead.org
Signed-off-by: Ingo Molnar

ARC: Atomic/bitops/cmpxchg/barriers

2013-02-11T14:30:30+00:00

This covers the UP / SMP (with no hardware assist for atomic r-m-w) as
well as ARC700 LLOCK/SCOND insns based.

Signed-off-by: Vineet Gupta