BMC/Intel-BMC/linux.git/arch/mn10300/include/asm/atomic.h, branch dev

locking,arch,mn10300: Fold atomic_ops

2014-08-14T10:48:10+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: David Howells Cc: Koichi Yasutake Cc: Linus Torvalds Cc: Paul E. McKenney Cc: linux-am33-list@redhat.com Link: http://lkml.kernel.org/r/20140508135852.605324173@infradead.org Signed-off-by: Ingo Molnar

arch,mn10300: Convert smp_mb__*()

2014-04-18T12:20:39+00:00

mn10300 fully relies on asm-generic/barrier.h and therefore its smp_mb() is barrier(). We can use the default implementation. Signed-off-by: Peter Zijlstra Acked-by: Paul E. McKenney Link: http://lkml.kernel.org/n/tip-wotyeoj99h1dpojjeest2jbk@git.kernel.org Cc: David Howells Cc: Koichi Yasutake Cc: Linus Torvalds Cc: linux-am33-list@redhat.com Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar

Disintegrate asm/system.h for MN10300

2012-03-28T17:30:02+00:00

Disintegrate asm/system.h for MN10300. Signed-off-by: David Howells cc: linux-am33-list@redhat.com

atomic: cleanup asm-generic atomic*.h inclusion

2011-07-26T23:49:47+00:00

After changing all consumers of atomics to include , we ran into some compile time errors due to this dependency chain: linux/atomic.h -> asm/atomic.h -> asm-generic/atomic-long.h where atomic-long.h could use funcs defined later in linux/atomic.h without a prototype. This patches moves the code that includes asm-generic/atomic*.h to linux/atomic.h. Archs that need need to select CONFIG_GENERIC_ATOMIC64 from now on (some of them used to include it unconditionally). Compile tested on i386 and x86_64 with allnoconfig. Signed-off-by: Arun Sharma Cc: Eric Dumazet Cc: Ingo Molnar Cc: David Miller Acked-by: Mike Frysinger Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

atomic: move atomic_add_unless to generic code

2011-07-26T23:49:47+00:00

This is in preparation for more generic atomic primitives based on __atomic_add_unless. Signed-off-by: Arun Sharma Signed-off-by: Hans-Christian Egtvedt Reviewed-by: Eric Dumazet Cc: Ingo Molnar Cc: David Miller Acked-by: Mike Frysinger Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

atomic: use

2011-07-26T23:49:47+00:00

This allows us to move duplicated code in (atomic_inc_not_zero() for now) to Signed-off-by: Arun Sharma Reviewed-by: Eric Dumazet Cc: Ingo Molnar Cc: David Miller Cc: Eric Dumazet Acked-by: Mike Frysinger Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

MN10300: atomic_read() should ensure it emits a load

2011-03-14T14:51:25+00:00

atomic_read() needs to ensure that it emits a load (which it can do by using ACCESS_ONCE()). Reported-by: Peter Zijlstra Signed-off-by: David Howells

MN10300: Implement atomic ops using atomic ops unit

2010-10-27T16:28:52+00:00

Implement atomic ops using the atomic ops unit available in the AM34 CPU. This allows the equivalent of the LL/SC instructions to be found on other CPUs. Signed-off-by: Mark Salter Signed-off-by: David Howells

mn10300: use generic atomic.h

2010-05-25T15:07:02+00:00

asm-generic/atomic.h has been derived from the mn10300 implementation. Remove the now duplicated mn10300 implementation by including the generic version instead. This adds cmpxchg_local() and cmpxchg64_local() for free to the architecture, as they are implemented in asm-generic/atomic.h. Signed-off-by: Mathieu Desnoyers Acked-by: David Howells Acked-by: Peter Fritzsche Acked-by: Arnd Bergmann Cc: Jamie Lokier Cc: Ingo Molnar Cc: Heiko Carstens Cc: Keith M Wesolowski Cc: Martin Schwidefsky Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

atomic_t: Cast to volatile when accessing atomic variables

2010-05-17T14:57:27+00:00

In preparation for removing volatile from the atomic_t definition, this patch adds a volatile cast to all the atomic read functions. Signed-off-by: Anton Blanchard Signed-off-by: Linus Torvalds