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authorDaniel Vetter <daniel.vetter@ffwll.ch>2021-12-14 09:43:25 +0100
committerDaniel Vetter <daniel.vetter@ffwll.ch>2021-12-14 10:24:28 +0100
commit99b03ca651f1c409d296d6c6e9440d9b005c722f (patch)
tree8773b8cbab631258b561ddb3d9b219072095bee4 /tools/include/linux/math.h
parent211b4dbc070090b4183d6f9db7dd3bd4e6170447 (diff)
parent2585cf9dfaaddf00b069673f27bb3f8530e2039c (diff)
Merge v5.16-rc5 into drm-next
Thomas Zimmermann requested a fixes backmerge, specifically also for 96c5f82ef0a1 ("drm/vc4: fix error code in vc4_create_object()") Just a bunch of adjacent changes conflicts, even the big pile of them in vc4. Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'tools/include/linux/math.h')
-rw-r--r--tools/include/linux/math.h25
1 files changed, 25 insertions, 0 deletions
diff --git a/tools/include/linux/math.h b/tools/include/linux/math.h
new file mode 100644
index 000000000000..4e7af99ec9eb
--- /dev/null
+++ b/tools/include/linux/math.h
@@ -0,0 +1,25 @@
+#ifndef _TOOLS_MATH_H
+#define _TOOLS_MATH_H
+
+/*
+ * This looks more complex than it should be. But we need to
+ * get the type for the ~ right in round_down (it needs to be
+ * as wide as the result!), and we want to evaluate the macro
+ * arguments just once each.
+ */
+#define __round_mask(x, y) ((__typeof__(x))((y)-1))
+#define round_up(x, y) ((((x)-1) | __round_mask(x, y))+1)
+#define round_down(x, y) ((x) & ~__round_mask(x, y))
+
+#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
+
+#ifndef roundup
+#define roundup(x, y) ( \
+{ \
+ const typeof(y) __y = y; \
+ (((x) + (__y - 1)) / __y) * __y; \
+} \
+)
+#endif
+
+#endif