linux-dev - Linux kernel development work

Age	Commit message (Collapse)	Author	Files	Lines
2010-05-17	atomic_t: Cast to volatile when accessing atomic variables	Anton Blanchard	1	-1/+1
	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 <anton@samba.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-01-08	sh: consolidate atomic_cmpxchg()/atomic_add_unless() definitions.	Paul Mundt	1	-44/+29
	The LL/SC and IRQ versions were using generic stubs while the GRB version was just reimplementing what it already had for the standard cmpxchg() code. As we have optimized cmpxchg() implementations that are decoupled from the atomic code, simply falling back on the generic wrapper does the right thing. With this in place the GRB case is unaffected while the LL/SC case gets to use its optimized cmpxchg(). Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-18	sh: Fix up smp_mb__xxx() memory barriers for SH-4A SMP.	Paul Mundt	1	-5/+4
	In the past these were simply wrapping to barrier() which was sufficient on SH SMP platforms predating SH-4A. Unfortunately due to ll/sc semantics an explicit synco is needed in these cases, which is sorted for us by just switching these over to smp_mb(). smp_mb() also has the benefit of being wrapped to barrier() in the UP and non-SH4A cases, so old behaviour is maintained for those parts. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-17	sh: Use generic atomic64_t implementation.	Paul Mundt	1	-0/+2
	Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-12	asm-generic: merge branch 'master' of torvalds/linux-2.6	Arnd Bergmann	1	-2/+2
	Fixes a merge conflict against the x86 tree caused by a fix to atomic.h which I renamed to atomic_long.h. Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2009-06-11	asm-generic: rename atomic.h to atomic-long.h	Arnd Bergmann	1	-1/+1
	The existing asm-generic/atomic.h only defines the atomic_long type. This renames it to atomic-long.h so we have a place to add a truly generic atomic.h that can be used on all non-SMP systems. Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Ingo Molnar <mingo@elte.hu>
2009-06-11	sh: Fix sh4a llsc-based cmpxchg()	Aoi Shinkai	1	-2/+2
	This fixes up a typo in the ll/sc based cmpxchg code which apparently wasn't getting a lot of testing due to the swapped old/new pair. With that fixed up, the ll/sc code also starts using it and provides its own atomic_add_unless(). Signed-off-by: Aoi Shinkai <shinkoi2005@gmail.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-01-06	atomic_t: unify all arch definitions	Matthew Wilcox	1	-4/+3
	The atomic_t type cannot currently be used in some header files because it would create an include loop with asm/atomic.h. Move the type definition to linux/types.h to break the loop. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Cc: Huang Ying <ying.huang@intel.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-29	sh: migrate to arch/sh/include/	Paul Mundt	1	-0/+89
	This follows the sparc changes a439fe51a1f8eb087c22dd24d69cebae4a3addac. Most of the moving about was done with Sam's directions at: http://marc.info/?l=linux-sh&m=121724823706062&w=2 with subsequent hacking and fixups entirely my fault. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>