summaryrefslogtreecommitdiff
path: root/scripts/atomic/fallbacks/dec_and_test
diff options
context:
space:
mode:
authorIngo Molnar <mingo@kernel.org>2019-02-11 14:27:05 +0100
committerIngo Molnar <mingo@kernel.org>2019-02-11 14:27:05 +0100
commit41b8687191cfd0326db03b0e82fb09d8c98ca641 (patch)
treea214babca0a181c67c25a615d608465a5f92f8c4 /scripts/atomic/fallbacks/dec_and_test
parent49262de2270e09882d7bd8866a691cdd69ab32f6 (diff)
parentbdf37b4dd35d2517cadc10735cd33022da7df133 (diff)
Merge branch 'locking/atomics' into locking/core, to pick up WIP commits
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'scripts/atomic/fallbacks/dec_and_test')
-rwxr-xr-xscripts/atomic/fallbacks/dec_and_test15
1 files changed, 15 insertions, 0 deletions
diff --git a/scripts/atomic/fallbacks/dec_and_test b/scripts/atomic/fallbacks/dec_and_test
new file mode 100755
index 000000000000..0ce7103b3df2
--- /dev/null
+++ b/scripts/atomic/fallbacks/dec_and_test
@@ -0,0 +1,15 @@
+cat <<EOF
+/**
+ * ${atomic}_dec_and_test - decrement and test
+ * @v: pointer of type ${atomic}_t
+ *
+ * Atomically decrements @v by 1 and
+ * returns true if the result is 0, or false for all other
+ * cases.
+ */
+static inline bool
+${atomic}_dec_and_test(${atomic}_t *v)
+{
+ return ${atomic}_dec_return(v) == 0;
+}
+EOF