OpenCloudOS-Kernel/arch/powerpc/include
Davidlohr Bueso 5a1b26d7c6 lcoking/barriers, arch: Use smp barriers in smp_store_release()
With commit b92b8b35a2 ("locking/arch: Rename set_mb() to smp_store_mb()")
it was made clear that the context of this call (and thus set_mb)
is strictly for CPU ordering, as opposed to IO. As such all archs
should use the smp variant of mb(), respecting the semantics and
saving a mandatory barrier on UP.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: <linux-arch@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: dave@stgolabs.net
Link: http://lkml.kernel.org/r/1445975631-17047-3-git-send-email-dave@stgolabs.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>

Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2016-01-12 20:46:46 +02:00
..
asm lcoking/barriers, arch: Use smp barriers in smp_store_release() 2016-01-12 20:46:46 +02:00
uapi/asm Partial revert of "powerpc: Individual System V IPC system calls" 2015-12-16 21:52:32 +11:00