linux-kernel - [PATCH 15/16] memblock tests: Add memblock_add

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Message-Id: <d1f86fdb7b1eb4cc4daef09e35fc8a1795657f89.1643206612.git.karolinadrobnik@gmail.com>
Date:   Thu, 27 Jan 2022 14:21:33 +0100
From:   Karolina Drobnik <karolinadrobnik@...il.com>
To:     linux-mm@...ck.org
Cc:     akpm@...ux-foundation.org, mike.rapoport@...il.com,
        linux-kernel@...r.kernel.org,
        Karolina Drobnik <karolinadrobnik@...il.com>
Subject: [PATCH 15/16] memblock tests: Add memblock_add_node test

Add a simple test for NUMA-aware variant of memblock_add function.

Signed-off-by: Karolina Drobnik <karolinadrobnik@...il.com>
---
 tools/testing/memblock/tests/basic_api.c | 34 ++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/tools/testing/memblock/tests/basic_api.c b/tools/testing/memblock/tests/basic_api.c
index 96af80bf9df9..02eb88358a58 100644
--- a/tools/testing/memblock/tests/basic_api.c
+++ b/tools/testing/memblock/tests/basic_api.c
@@ -55,6 +55,39 @@ static int memblock_add_simple_check(void)
 	return 0;
 }
 
+/*
+ * A simple test that adds a memory block of a specified base address, size
+ * NUMA node and memory flags to the collection of available memory regions.
+ * It checks if the new entry, region counter and total memory size have
+ * expected values.
+ */
+static int memblock_add_node_simple_check(void)
+{
+	struct memblock_region *rgn;
+
+	rgn = &memblock.memory.regions[0];
+
+	struct region r = {
+		.base = SZ_1M,
+		.size = SZ_16M
+	};
+
+	reset_memblock();
+	memblock_add_node(r.base, r.size, 1, MEMBLOCK_HOTPLUG);
+
+	assert(rgn->base == r.base);
+	assert(rgn->size == r.size);
+#ifdef CONFIG_NUMA
+	assert(rgn->nid == 1);
+#endif
+	assert(rgn->flags == MEMBLOCK_HOTPLUG);
+
+	assert(memblock.memory.cnt == 1);
+	assert(memblock.memory.total_size == r.size);
+
+	return 0;
+}
+
 /*
  * A test that tries to add two memory blocks that don't overlap with one another.
  * It checks if two correctly initialized entries were added to the collection
@@ -230,6 +263,7 @@ static int memblock_add_twice_check(void)
 static int memblock_add_checks(void)
 {
 	memblock_add_simple_check();
+	memblock_add_node_simple_check();
 	memblock_add_disjoint_check();
 	memblock_add_overlap_top_check();
 	memblock_add_overlap_bottom_check();
-- 
2.30.2