Chris Metcalf df29ccb6c0 arch/tile: allow nonatomic stores to interoperate with fast atomic syscalls ... This semantic was already true for atomic operations within the kernel, and this change makes it true for the fast atomic syscalls (__NR_cmpxchg and __NR_atomic_update) as well. Previously, user-space had to use the fast atomic syscalls exclusively to update memory, since raw stores could lose a race with the atomic update code even when the atomic update hadn't actually modified the value. With this change, we no longer write back the value to memory if it hasn't changed. This allows certain types of idioms in user space to work as expected, e.g. "atomic exchange" to acquire a spinlock, followed by a raw store of zero to release the lock. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>		2011-05-04 14:40:07 -04:00
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atomic_32.c	arch/tile: fix futex sanitization definition/prototype mismatch	2011-03-20 00:08:21 -04:00
atomic_asm_32.S	arch/tile: allow nonatomic stores to interoperate with fast atomic syscalls	2011-05-04 14:40:07 -04:00
cacheflush.c	arch/tile: enhance existing finv_buffer_remote() routine	2011-03-01 16:21:06 -05:00
checksum.c
cpumask.c	arch/tile: Miscellaneous cleanup changes.	2010-07-06 13:41:51 -04:00
delay.c	arch/tile: fix __ndelay etc to work better	2011-03-01 16:20:04 -05:00
exports.c	arch/tile: export some additional module symbols	2011-03-01 16:21:12 -05:00
Makefile	arch/tile: use extended assembly to inline __mb_incoherent()	2011-03-01 16:20:54 -05:00
memchr_32.c	arch/tile: fix memchr() not to dereference memory for zero length	2010-11-24 13:57:42 -05:00
memcpy_32.S	arch/tile: minor whitespace/naming changes for string support files	2010-10-15 15:38:54 -04:00
memcpy_tile64.c	arch/tile: support 4KB page size as well as 64KB	2011-03-10 13:17:53 -05:00
memmove.c	arch/tile: minor whitespace/naming changes for string support files	2010-10-15 15:38:54 -04:00
memset_32.c	arch/tile: minor whitespace/naming changes for string support files	2010-10-15 15:38:54 -04:00
spinlock_32.c	arch/tile: fix deadlock bugs in rwlock implementation	2011-03-10 16:10:41 -05:00
spinlock_common.h	arch/tile: Miscellaneous cleanup changes.	2010-07-06 13:41:51 -04:00
strchr_32.c
strlen_32.c	arch/tile: minor whitespace/naming changes for string support files	2010-10-15 15:38:54 -04:00
uaccess.c	arch/tile: Miscellaneous cleanup changes.	2010-07-06 13:41:51 -04:00
usercopy_32.S