casaroli commented on code in PR #21156:
URL: https://github.com/apache/nuttx/pull/21156#discussion_r4422455899
##########
mm/mm_gran/mm_grantable.c:
##########
@@ -124,6 +124,53 @@ static void gran_set_(gran_t *gran, gatr_t *rang, bool val)
return;
}
+/* Return the index of the lowest set bit of a non-zero GAT cell value.
+ * An int can have 16 bits: use the long form of the builtin.
+ */
+
+static uint32_t cell_ctz(uint32_t v)
+{
+#ifdef CONFIG_HAVE_BUILTIN_CTZ
+ return __builtin_ctzl(v);
Review Comment:
Done.
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