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-rwxr-xr-xscripts/atomic/fallbacks/try_cmpxchg11
1 files changed, 11 insertions, 0 deletions
diff --git a/scripts/atomic/fallbacks/try_cmpxchg b/scripts/atomic/fallbacks/try_cmpxchg
new file mode 100755
index 000000000..06db0f738
--- /dev/null
+++ b/scripts/atomic/fallbacks/try_cmpxchg
@@ -0,0 +1,11 @@
+cat <<EOF
+static __always_inline bool
+${arch}${atomic}_try_cmpxchg${order}(${atomic}_t *v, ${int} *old, ${int} new)
+{
+ ${int} r, o = *old;
+ r = ${arch}${atomic}_cmpxchg${order}(v, o, new);
+ if (unlikely(r != o))
+ *old = r;
+ return likely(r == o);
+}
+EOF