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authorIngo Molnar <mingo@kernel.org>2019-02-11 16:27:05 +0300
committerIngo Molnar <mingo@kernel.org>2019-02-11 16:27:05 +0300
commit41b8687191cfd0326db03b0e82fb09d8c98ca641 (patch)
treea214babca0a181c67c25a615d608465a5f92f8c4 /scripts/atomic/fallbacks/add_negative
parent49262de2270e09882d7bd8866a691cdd69ab32f6 (diff)
parentbdf37b4dd35d2517cadc10735cd33022da7df133 (diff)
downloadlinux-41b8687191cfd0326db03b0e82fb09d8c98ca641.tar.xz
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/add_negative')
-rwxr-xr-xscripts/atomic/fallbacks/add_negative16
1 files changed, 16 insertions, 0 deletions
diff --git a/scripts/atomic/fallbacks/add_negative b/scripts/atomic/fallbacks/add_negative
new file mode 100755
index 000000000000..e6f4815637de
--- /dev/null
+++ b/scripts/atomic/fallbacks/add_negative
@@ -0,0 +1,16 @@
+cat <<EOF
+/**
+ * ${atomic}_add_negative - add and test if negative
+ * @i: integer value to add
+ * @v: pointer of type ${atomic}_t
+ *
+ * Atomically adds @i to @v and returns true
+ * if the result is negative, or false when
+ * result is greater than or equal to zero.
+ */
+static inline bool
+${atomic}_add_negative(${int} i, ${atomic}_t *v)
+{
+ return ${atomic}_add_return(i, v) < 0;
+}
+EOF