linux-sg2042/arch/tile/lib
Chris Metcalf 2957c03539 tile: Provide atomic_{or,xor,and}
Implement atomic logic ops -- atomic_{or,xor,and}.

For tilegx, these are relatively straightforward; the architecture
provides atomic "or" and "and", both 32-bit and 64-bit.  To support
xor we provide a loop using "cmpexch".

For the older 32-bit tilepro architecture, we have to extend
the set of low-level assembly routines to include 32-bit "and",
as well as all three 64-bit routines.  Somewhat confusingly,
some 32-bit versions are already used by the bitops inlines, with
parameter types appropriate for bitops, so we have to do a bit of
casting to match "int" to "unsigned long".

Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1436474297-32187-1-git-send-email-cmetcalf@ezchip.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-07-27 14:06:24 +02:00
..
Makefile tile: remove support for TILE64 2013-09-03 14:53:29 -04:00
atomic_32.c tile: Provide atomic_{or,xor,and} 2015-07-27 14:06:24 +02:00
atomic_asm_32.S tile: Provide atomic_{or,xor,and} 2015-07-27 14:06:24 +02:00
cacheflush.c tile: support FRAME_POINTER 2013-09-03 14:52:09 -04:00
checksum.c arch/tile: break out the "csum a long" function to <asm/checksum.h> 2012-07-11 16:04:57 -04:00
cpumask.c tile: export a handful of symbols appropriately 2013-02-08 13:20:36 -05:00
delay.c arch/tile: fix __ndelay etc to work better 2011-03-01 16:20:04 -05:00
exports.c tile: improve stack backtrace 2015-05-11 11:22:40 -04:00
memchr_32.c arch/tile: fix memchr() not to dereference memory for zero length 2010-11-24 13:57:42 -05:00
memchr_64.c tile: optimize and clean up string functions 2013-08-01 16:23:12 -04:00
memcpy_32.S tile: remove support for TILE64 2013-09-03 14:53:29 -04:00
memcpy_64.c tile: support FRAME_POINTER 2013-09-03 14:52:09 -04:00
memcpy_user_64.c modpost: work correctly with tile coldtext sections 2015-07-08 18:53:49 -04:00
memmove.c arch/tile: minor whitespace/naming changes for string support files 2010-10-15 15:38:54 -04:00
memset_32.c tile: remove support for TILE64 2013-09-03 14:53:29 -04:00
memset_64.c tile: optimize and clean up string functions 2013-08-01 16:23:12 -04:00
spinlock_32.c tile: modify arch_spin_unlock_wait() semantics 2015-04-28 22:43:13 -04:00
spinlock_64.c tile: modify arch_spin_unlock_wait() semantics 2015-04-28 22:43:13 -04:00
spinlock_common.h arch/tile: fix bug in delay_backoff() 2012-04-02 12:13:15 -04:00
strchr_32.c tile: optimize and clean up string functions 2013-08-01 16:23:12 -04:00
strchr_64.c tile: optimize and clean up string functions 2013-08-01 16:23:12 -04:00
string-endian.h tile: optimize and clean up string functions 2013-08-01 16:23:12 -04:00
strlen_32.c tile: optimize and clean up string functions 2013-08-01 16:23:12 -04:00
strlen_64.c arch/tile: support building big-endian kernel 2012-05-25 12:48:22 -04:00
strnlen_32.c tile: optimize strnlen using SIMD instructions 2013-08-01 20:08:51 -04:00
strnlen_64.c tile: optimize strnlen using SIMD instructions 2013-08-01 20:08:51 -04:00
uaccess.c Kconfig: consolidate CONFIG_DEBUG_STRICT_USER_COPY_CHECKS 2013-04-30 17:04:09 -07:00
usercopy_32.S tile: add <asm/word-at-a-time.h> and enable support functions 2015-04-30 15:23:37 -04:00
usercopy_64.S tile: add <asm/word-at-a-time.h> and enable support functions 2015-04-30 15:23:37 -04:00