locking/atomic: Add generic try_cmpxchg64 support

[linux-block.git] / scripts / atomic / gen-atomic-fallback.sh

diff --git a/scripts/atomic/gen-atomic-fallback.sh b/scripts/atomic/gen-atomic-fallback.sh
index 8e2da71f1d5fa7548b0ba96af14571193d2ae052..3a07695e3c8963eea64aef4632c30a25458ab333 100755 (executable)
--- a/scripts/atomic/gen-atomic-fallback.sh
+++ b/scripts/atomic/gen-atomic-fallback.sh
@@ -164,41 +164,44 @@ gen_xchg_fallbacks()
 
 gen_try_cmpxchg_fallback()
 {
+       local cmpxchg="$1"; shift;
        local order="$1"; shift;
 
 cat <<EOF
-#ifndef arch_try_cmpxchg${order}
-#define arch_try_cmpxchg${order}(_ptr, _oldp, _new) \\
+#ifndef arch_try_${cmpxchg}${order}
+#define arch_try_${cmpxchg}${order}(_ptr, _oldp, _new) \\
 ({ \\
        typeof(*(_ptr)) *___op = (_oldp), ___o = *___op, ___r; \\
-       ___r = arch_cmpxchg${order}((_ptr), ___o, (_new)); \\
+       ___r = arch_${cmpxchg}${order}((_ptr), ___o, (_new)); \\
        if (unlikely(___r != ___o)) \\
                *___op = ___r; \\
        likely(___r == ___o); \\
 })
-#endif /* arch_try_cmpxchg${order} */
+#endif /* arch_try_${cmpxchg}${order} */
 
 EOF
 }
 
 gen_try_cmpxchg_fallbacks()
 {
-       printf "#ifndef arch_try_cmpxchg_relaxed\n"
-       printf "#ifdef arch_try_cmpxchg\n"
+       local cmpxchg="$1"; shift;
 
-       gen_basic_fallbacks "arch_try_cmpxchg"
+       printf "#ifndef arch_try_${cmpxchg}_relaxed\n"
+       printf "#ifdef arch_try_${cmpxchg}\n"
 
-       printf "#endif /* arch_try_cmpxchg */\n\n"
+       gen_basic_fallbacks "arch_try_${cmpxchg}"
+
+       printf "#endif /* arch_try_${cmpxchg} */\n\n"
 
        for order in "" "_acquire" "_release" "_relaxed"; do
-               gen_try_cmpxchg_fallback "${order}"
+               gen_try_cmpxchg_fallback "${cmpxchg}" "${order}"
        done
 
-       printf "#else /* arch_try_cmpxchg_relaxed */\n"
+       printf "#else /* arch_try_${cmpxchg}_relaxed */\n"
 
-       gen_order_fallbacks "arch_try_cmpxchg"
+       gen_order_fallbacks "arch_try_${cmpxchg}"
 
-       printf "#endif /* arch_try_cmpxchg_relaxed */\n\n"
+       printf "#endif /* arch_try_${cmpxchg}_relaxed */\n\n"
 }
 
 cat << EOF
@@ -218,7 +221,9 @@ for xchg in "arch_xchg" "arch_cmpxchg" "arch_cmpxchg64"; do
        gen_xchg_fallbacks "${xchg}"
 done
 
-gen_try_cmpxchg_fallbacks
+for cmpxchg in "cmpxchg" "cmpxchg64"; do
+       gen_try_cmpxchg_fallbacks "${cmpxchg}"
+done
 
 grep '^[a-z]' "$1" | while read name meta args; do
        gen_proto "${meta}" "${name}" "atomic" "int" ${args}