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Peter Zijlstra 3a1adb23a5 locking/atomic, arch/sparc: Implement atomic{,64}_fetch_{add,sub,and,or,xor}() 
Implement FETCH-OP atomic primitives, these are very similar to the
existing OP-RETURN primitives we already have, except they return the
value of the atomic variable _before_ modification.

This is especially useful for irreversible operations -- such as
bitops (because it becomes impossible to reconstruct the state prior
to modification).

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: James Y Knight <jyknight@google.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: linux-arch@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: sparclinux@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-06-16 10:48:30 +02:00
..
ashldi3.S sparc: Convert some assembler over to linakge.h's ENTRY/ENDPROC 2012-05-11 20:33:22 -07:00
ashrdi3.S sparc: Convert some assembler over to linakge.h's ENTRY/ENDPROC 2012-05-11 20:33:22 -07:00
atomic32.c locking/atomic, arch/sparc: Implement atomic{,64}_fetch_{add,sub,and,or,xor}() 2016-06-16 10:48:30 +02:00
atomic_64.S locking/atomic, arch/sparc: Implement atomic{,64}_fetch_{add,sub,and,or,xor}() 2016-06-16 10:48:30 +02:00
bitext.c sparc/srmmu: clear trailing edge of bitmap properly 2013-03-31 19:29:12 -04:00
bitops.S sparc: Convert some assembler over to linakge.h's ENTRY/ENDPROC 2012-05-11 20:33:22 -07:00
blockops.S sparc: Convert some assembler over to linakge.h's ENTRY/ENDPROC 2012-05-11 20:33:22 -07:00
bzero.S sparc: Convert some assembler over to linakge.h's ENTRY/ENDPROC 2012-05-11 20:33:22 -07:00
checksum_32.S sparc32: Fixed unaligned memory copying in function __csum_partial_copy_sparc_generic 2011-05-11 21:35:04 -07:00
checksum_64.S sparc,sparc64: unify lib/ 2008-12-04 09:17:19 -08:00
clear_page.S sparc64: Make PAGE_OFFSET variable. 2013-11-12 15:22:34 -08:00
cmpdi2.c
copy_in_user.S sparc64: Fix probe_kernel_{read,write}(). 2009-02-08 22:32:31 -08:00
copy_page.S sparc64: Make PAGE_OFFSET variable. 2013-11-12 15:22:34 -08:00
copy_user.S
COPYING.LIB
csum_copy.S sparc,sparc64: unify lib/ 2008-12-04 09:17:19 -08:00
csum_copy_from_user.S sparc64: Fix section attribute warnings. 2009-05-29 16:12:02 -07:00
csum_copy_to_user.S sparc64: Fix section attribute warnings. 2009-05-29 16:12:02 -07:00
divdi3.S sparc32: Kill off software 32-bit multiply/divide routines. 2012-05-15 11:23:47 -07:00
ffs.S sparc: Use popc when possible for ffs/__ffs/ffz. 2011-08-02 21:28:53 -07:00
GENbzero.S sparc64: Kill .fixup section bloat. 2009-02-08 22:00:55 -08:00
GENcopy_from_user.S sparc64: Fix probe_kernel_{read,write}(). 2009-02-08 22:32:31 -08:00
GENcopy_to_user.S sparc64: Fix probe_kernel_{read,write}(). 2009-02-08 22:32:31 -08:00
GENmemcpy.S sparc,sparc64: unify lib/ 2008-12-04 09:17:19 -08:00
GENpage.S sparc,sparc64: unify lib/ 2008-12-04 09:17:19 -08:00
GENpatch.S sparc,sparc64: unify lib/ 2008-12-04 09:17:19 -08:00
hweight.S sparc: Use popc if possible for hweight routines. 2011-08-02 21:28:50 -07:00
iomap.c sparc: switch to GENERIC_PCI_IOMAP 2011-12-04 15:59:49 +02:00
ipcsum.S sparc: Convert some assembler over to linakge.h's ENTRY/ENDPROC 2012-05-11 20:33:22 -07:00
ksyms.c locking/atomic, arch/sparc: Implement atomic{,64}_fetch_{add,sub,and,or,xor}() 2016-06-16 10:48:30 +02:00
libgcc.h
locks.S
lshrdi3.S sparc: Convert some assembler over to linakge.h's ENTRY/ENDPROC 2012-05-11 20:33:22 -07:00
Makefile sparc32: introduce asm-generic/io.h 2014-05-02 01:30:21 -04:00
mcount.S sparc64,ftrace: Remove check of obsolete variable function_trace_stop 2014-07-18 13:57:03 -04:00
memcmp.S sparc: Commonize memcmp assembler. 2008-12-09 04:09:07 -08:00
memcpy.S sparc32: Correct the return value of memcpy. 2011-10-20 15:17:23 -07:00
memmove.S sparc64: Fix several bugs in memmove(). 2015-03-23 09:22:10 -07:00
memscan_32.S sparc: prepare lib/ for unification 2008-12-04 09:17:18 -08:00
memscan_64.S sparc,sparc64: unify lib/ 2008-12-04 09:17:19 -08:00
memset.S sparc: Let memset return the address argument 2014-09-09 16:38:10 -07:00
muldi3.S sparc32: Kill off software 32-bit multiply/divide routines. 2012-05-15 11:23:47 -07:00
NG2copy_from_user.S sparc64: fix FP corruption in user copy functions 2015-12-24 12:13:18 -05:00
NG2copy_to_user.S sparc64: fix FP corruption in user copy functions 2015-12-24 12:13:18 -05:00
NG2memcpy.S sparc64: fix FP corruption in user copy functions 2015-12-24 12:13:18 -05:00
NG2patch.S sparc,sparc64: unify lib/ 2008-12-04 09:17:19 -08:00
NG4clear_page.S sparc64: Niagara-4 bzero/memset, plus use MRU stores in page copy. 2012-10-05 13:45:26 -07:00
NG4copy_from_user.S sparc64: fix FP corruption in user copy functions 2015-12-24 12:13:18 -05:00
NG4copy_page.S sparc64: Niagara-4 bzero/memset, plus use MRU stores in page copy. 2012-10-05 13:45:26 -07:00
NG4copy_to_user.S sparc64: fix FP corruption in user copy functions 2015-12-24 12:13:18 -05:00
NG4memcpy.S sparc64: fix FP corruption in user copy functions 2015-12-24 12:13:18 -05:00
NG4memset.S sparc64: Niagara-4 bzero/memset, plus use MRU stores in page copy. 2012-10-05 13:45:26 -07:00
NG4patch.S sparc64: Niagara-4 bzero/memset, plus use MRU stores in page copy. 2012-10-05 13:45:26 -07:00
NGbzero.S sparc64: Kill .fixup section bloat. 2009-02-08 22:00:55 -08:00
NGcopy_from_user.S sparc64: Fix probe_kernel_{read,write}(). 2009-02-08 22:32:31 -08:00
NGcopy_to_user.S sparc64: Fix probe_kernel_{read,write}(). 2009-02-08 22:32:31 -08:00
NGmemcpy.S sparc,sparc64: unify lib/ 2008-12-04 09:17:19 -08:00
NGpage.S sparc64: Add SPARC-T4 optimized memcpy. 2012-09-27 00:35:11 -07:00
NGpatch.S sparc,sparc64: unify lib/ 2008-12-04 09:17:19 -08:00
PeeCeeI.c sparc64: update IO access functions in PeeCeeI 2014-07-21 21:43:18 -07:00
strlen.S sparc: Unify strlen assembler. 2008-12-09 01:07:09 -08:00
strncmp_32.S sparc: Convert some assembler over to linakge.h's ENTRY/ENDPROC 2012-05-11 20:33:22 -07:00
strncmp_64.S sparc: Convert some assembler over to linakge.h's ENTRY/ENDPROC 2012-05-11 20:33:22 -07:00
U1copy_from_user.S sparc64: fix FP corruption in user copy functions 2015-12-24 12:13:18 -05:00
U1copy_to_user.S sparc64: fix FP corruption in user copy functions 2015-12-24 12:13:18 -05:00
U1memcpy.S sparc64: fix FP corruption in user copy functions 2015-12-24 12:13:18 -05:00
U3copy_from_user.S sparc64: fix FP corruption in user copy functions 2015-12-24 12:13:18 -05:00
U3copy_to_user.S sparc64: fix FP corruption in user copy functions 2015-12-24 12:13:18 -05:00
U3memcpy.S sparc64: fix FP corruption in user copy functions 2015-12-24 12:13:18 -05:00
U3patch.S sparc,sparc64: unify lib/ 2008-12-04 09:17:19 -08:00
ucmpdi2.c sparc32: add ucmpdi2 2012-05-19 15:23:57 -07:00
udivdi3.S sparc32: Kill off software 32-bit multiply/divide routines. 2012-05-15 11:23:47 -07:00
user_fixup.c sparc64: move EXPORT_SYMBOL to the symbols definition 2009-01-08 16:58:20 -08:00
VISsave.S sparc64: use ENTRY/ENDPROC in VISsave 2015-08-07 15:22:40 -07:00
xor.S sparc: Convert some assembler over to linakge.h's ENTRY/ENDPROC 2012-05-11 20:33:22 -07:00