linux-kernel - [PATCH v4 08/17] maple_tree: print store type in mas

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Message-ID: <20240814161944.55347-9-sidhartha.kumar@oracle.com>
Date: Wed, 14 Aug 2024 12:19:35 -0400
From: Sidhartha Kumar <sidhartha.kumar@...cle.com>
To: linux-kernel@...r.kernel.org, maple-tree@...ts.infradead.org
Cc: linux-mm@...ck.org, akpm@...ux-foundation.org, liam.howlett@...cle.com,
        willy@...radead.org, surenb@...gle.com,
        Sidhartha Kumar <sidhartha.kumar@...cle.com>,
        "Liam R. Howlett" <Liam.Howlett@...cle.com>
Subject: [PATCH v4 08/17] maple_tree: print store type in mas_dump()

Knowing the store type of the maple state could be helpful for debugging.
Have mas_dump() print mas->store_type.

Reviewed-by: Liam R. Howlett <Liam.Howlett@...cle.com>
Signed-off-by: Sidhartha Kumar <sidhartha.kumar@...cle.com>
---
 lib/maple_tree.c | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/lib/maple_tree.c b/lib/maple_tree.c
index e01e05be6301..a1689fc6227b 100644
--- a/lib/maple_tree.c
+++ b/lib/maple_tree.c
@@ -7760,6 +7760,40 @@ void mas_dump(const struct ma_state *mas)
 		break;
 	}
 
+	pr_err("Store Type: ");
+	switch (mas->store_type) {
+	case wr_invalid:
+		pr_err("invalid store type\n");
+		break;
+	case wr_new_root:
+		pr_err("new_root\n");
+		break;
+	case wr_store_root:
+		pr_err("store_root\n");
+		break;
+	case wr_exact_fit:
+		pr_err("exact_fit\n");
+		break;
+	case wr_split_store:
+		pr_err("split_store\n");
+		break;
+	case wr_slot_store:
+		pr_err("slot_store\n");
+		break;
+	case wr_append:
+		pr_err("append\n");
+		break;
+	case wr_node_store:
+		pr_err("node_store\n");
+		break;
+	case wr_spanning_store:
+		pr_err("spanning_store\n");
+		break;
+	case wr_rebalance:
+		pr_err("rebalance\n");
+		break;
+	}
+
 	pr_err("[%u/%u] index=%lx last=%lx\n", mas->offset, mas->end,
 	       mas->index, mas->last);
 	pr_err("     min=%lx max=%lx alloc=%p, depth=%u, flags=%x\n",
-- 
2.46.0