| commit | b345e140534ea17814b02bdf8798f18db6295304 | |
| author | Max Filippov <jcmvbkbc@gmail.com> | |
| Thu, 18 Apr 2019 23:37:00 +0000 (18 16:37 -0700) | ||
| committer | Max Filippov <jcmvbkbc@gmail.com> | |
| Wed, 15 May 2019 17:31:52 +0000 (15 10:31 -0700) | ||
| tree | f9320a22da357d31ad10e17a340300b02a389b98 | treesnapshot (tar.gz zip) |
| parent | 98736654f3dfbf984d9e26c9be0480b0560c1067 | commitdiff |
target/xtensa: implement exclusive access option
The Exclusive Instructions provide a general-purpose mechanism for
atomic updates of memory-based synchronization variables that can be
used for exclusion algorithms.
Use cmpxchg-based implementation that is sufficient for the typical use
of exclusive access in atomic operations.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
The Exclusive Instructions provide a general-purpose mechanism for
atomic updates of memory-based synchronization variables that can be
used for exclusion algorithms.
Use cmpxchg-based implementation that is sufficient for the typical use
of exclusive access in atomic operations.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>