add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/tools/testing/radix-tree/regression3.c
..
..
@@ -69,32 +69,9 @@
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 			continue;
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 		}
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 	}
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-	radix_tree_delete(&root, 1);
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-
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-	first = true;
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-	radix_tree_for_each_contig(slot, &root, &iter, 0) {
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-		printv(2, "contig %ld %p\n", iter.index, *slot);
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-		if (first) {
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-			radix_tree_insert(&root, 1, ptr);
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-			first = false;
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-		}
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-		if (radix_tree_deref_retry(*slot)) {
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-			printv(2, "retry at %ld\n", iter.index);
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-			slot = radix_tree_iter_retry(&iter);
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-			continue;
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-		}
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-	}
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 	radix_tree_for_each_slot(slot, &root, &iter, 0) {
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 		printv(2, "slot %ld %p\n", iter.index, *slot);
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-		if (!iter.index) {
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-			printv(2, "next at %ld\n", iter.index);
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-			slot = radix_tree_iter_resume(slot, &iter);
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-		}
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-	}
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-
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-	radix_tree_for_each_contig(slot, &root, &iter, 0) {
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-		printv(2, "contig %ld %p\n", iter.index, *slot);
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 		if (!iter.index) {
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 			printv(2, "next at %ld\n", iter.index);
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 			slot = radix_tree_iter_resume(slot, &iter);