kernel.git/arch/m68k/include/asm/atomic.h, branch linux-4.6.y

atomic, arch: Audit atomic_{read,set}()

2015-09-23T07:54:28Z

This patch makes sure that atomic_{read,set}() are at least {READ,WRITE}_ONCE(). We already had the 'requirement' that atomic_read() should use ACCESS_ONCE(), and most archs had this, but a few were lacking. All are now converted to use READ_ONCE(). And, by a symmetry and general paranoia argument, upgrade atomic_set() to use WRITE_ONCE(). Signed-off-by: Peter Zijlstra (Intel) Cc: Andrew Morton Cc: Dmitry Vyukov Cc: Linus Torvalds Cc: Paul E. McKenney Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: james.hogan@imgtec.com Cc: linux-kernel@vger.kernel.org Cc: oleg@redhat.com Cc: will.deacon@arm.com Signed-off-by: Ingo Molnar

atomic: Collapse all atomic_{set,clear}_mask definitions

2015-07-27T12:06:24Z

Move the now generic definitions of atomic_{set,clear}_mask() into linux/atomic.h to avoid endless and pointless repetition. Also, provide an atomic_andnot() wrapper for those few archs that can implement that. Signed-off-by: Peter Zijlstra (Intel) Signed-off-by: Thomas Gleixner

atomic: Provide atomic_{or,xor,and}

2015-07-27T12:06:24Z

Implement atomic logic ops -- atomic_{or,xor,and}. These will replace the atomic_{set,clear}_mask functions that are available on some archs. Signed-off-by: Peter Zijlstra (Intel) Signed-off-by: Thomas Gleixner

m68k: Provide atomic_{or,xor,and}

2015-07-27T12:06:22Z

Implement atomic logic ops -- atomic_{or,xor,and}. These will replace the atomic_{set,clear}_mask functions that are available on some archs. Acked-by: Geert Uytterhoeven Signed-off-by: Peter Zijlstra (Intel) Signed-off-by: Thomas Gleixner

locking,arch: Use ACCESS_ONCE() instead of cast to volatile in atomic_read()

2014-10-03T04:06:23Z

Use the much more reader friendly ACCESS_ONCE() instead of the cast to volatile. This is purely a stylistic change. Signed-off-by: Pranith Kumar Acked-by: Jesper Nilsson Acked-by: Hans-Christian Egtvedt Acked-by: Max Filippov Signed-off-by: Peter Zijlstra (Intel) Cc: Linus Torvalds Cc: linux-arch@vger.kernel.org Link: http://lkml.kernel.org/r/1411482607-20948-1-git-send-email-bobby.prani@gmail.com Signed-off-by: Ingo Molnar

locking,arch,m68k: Fold atomic_ops

2014-08-14T10:48:08Z

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. Requires asm_op due to eor. Signed-off-by: Peter Zijlstra Acked-by: Geert Uytterhoeven Cc: Linus Torvalds Cc: Paul E. McKenney Cc: linux-m68k@lists.linux-m68k.org Link: http://lkml.kernel.org/r/20140509091646.GO30445@twins.programming.kicks-ass.net Signed-off-by: Ingo Molnar

arch,m68k: Convert smp_mb__*()

2014-04-18T12:20:37Z

m68k uses asm-generic/barrier.h and its smp_mb() is barrier(), therefore we can use the generic versions that use smp_mb(). Signed-off-by: Peter Zijlstra Acked-by: Paul E. McKenney Link: http://lkml.kernel.org/n/tip-s5dvosrb7qhvpmtaffwfn0zg@git.kernel.org Cc: Geert Uytterhoeven Cc: Linus Torvalds Cc: linux-kernel@vger.kernel.org Cc: linux-m68k@lists.linux-m68k.org Signed-off-by: Ingo Molnar

m68k: include asm/cmpxchg.h in our m68k atomic.h

2012-04-01T20:57:49Z

After commit 9ffc93f203c18a70623f21950f1dd473c9ec48cd ("Remove all CC init/main.o In file included from include/linux/mm.h:15:0, from include/linux/ring_buffer.h:5, from include/linux/ftrace_event.h:4, from include/trace/syscall.h:6, from include/linux/syscalls.h:78, from init/main.c:16: include/linux/debug_locks.h: In function ‘__debug_locks_off’: include/linux/debug_locks.h:16:2: error: implicit declaration of function ‘xchg’ There is no indirect inclusions of the new asm/cmpxchg.h for m68k here. Looking at most other architectures they include asm/cmpxchg.h in their asm/atomic.h. M68k currently does not do this. Including this in atomic.h fixes all m68k build problems. Signed-off-by: Greg Ungerer Acked-by: David Howells Signed-off-by: Geert Uytterhoeven

Disintegrate asm/system.h for M68K

2012-03-28T17:30:02Z

Disintegrate asm/system.h for M68K. Signed-off-by: David Howells Acked-by: Greg Ungerer cc: linux-m68k@lists.linux-m68k.org

m68k: ColdFire V4e MMU context support code

2011-12-30T00:20:34Z

Add code to manage the context's of the ColdFire V4e MMU. This code is mostly taken from the Freescale 2.6.35 kernel BSP for MMU enabled ColdFire. Signed-off-by: Greg Ungerer Acked-by: Geert Uytterhoeven Acked-by: Matt Waddel Acked-by: Kurt Mahan