perf tests: Add mem2node object test

Adding mem2node object automated test.

The test prepares few artificial nodes - memory maps and verifies the
mem2node object returns proper node values to given addresses.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20180309101442.9224-4-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/tests/Build b/tools/perf/tests/Build
index 62ca017..6c108fa 100644 (file)
--- a/tools/perf/tests/Build
+++ b/tools/perf/tests/Build
@@ -48,6 +48,7 @@ perf-y += bitmap.o
 perf-y += perf-hooks.o
 perf-y += clang.o
 perf-y += unit_number__scnprintf.o
+perf-y += mem2node.o
 
 $(OUTPUT)tests/llvm-src-base.c: tests/bpf-script-example.c tests/Build
        $(call rule_mkdir)

diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c
index 38bf109..625f5a6 100644 (file)
--- a/tools/perf/tests/builtin-test.c
+++ b/tools/perf/tests/builtin-test.c
@@ -275,6 +275,10 @@ static struct test generic_tests[] = {
                .func = test__unit_number__scnprint,
        },
        {
+               .desc = "mem2node",
+               .func = test__mem2node,
+       },
+       {
                .func = NULL,
        },
 };

diff --git a/tools/perf/tests/mem2node.c b/tools/perf/tests/mem2node.c
new file mode 100644 (file)
index 0000000..0c3c87f
--- /dev/null
+++ b/tools/perf/tests/mem2node.c
@@ -0,0 +1,75 @@
+#include <linux/compiler.h>
+#include <linux/bitmap.h>
+#include "cpumap.h"
+#include "mem2node.h"
+#include "tests.h"
+
+static struct node {
+       int              node;
+       const char      *map;
+} test_nodes[] = {
+       { .node = 0, .map = "0"     },
+       { .node = 1, .map = "1-2"   },
+       { .node = 3, .map = "5-7,9" },
+};
+
+#define T TEST_ASSERT_VAL
+
+static unsigned long *get_bitmap(const char *str, int nbits)
+{
+       struct cpu_map *map = cpu_map__new(str);
+       unsigned long *bm = NULL;
+       int i;
+
+       bm = bitmap_alloc(nbits);
+
+       if (map && bm) {
+               bitmap_zero(bm, nbits);
+
+               for (i = 0; i < map->nr; i++) {
+                       set_bit(map->map[i], bm);
+               }
+       }
+
+       if (map)
+               cpu_map__put(map);
+       else
+               free(bm);
+
+       return bm && map ? bm : NULL;
+}
+
+int test__mem2node(struct test *t __maybe_unused, int subtest __maybe_unused)
+{
+       struct mem2node map;
+       struct memory_node nodes[3];
+       struct perf_env env = {
+               .memory_nodes    = (struct memory_node *) &nodes[0],
+               .nr_memory_nodes = ARRAY_SIZE(nodes),
+               .memory_bsize    = 0x100,
+       };
+       unsigned int i;
+
+       for (i = 0; i < ARRAY_SIZE(nodes); i++) {
+               nodes[i].node = test_nodes[i].node;
+               nodes[i].size = 10;
+
+               T("failed: alloc bitmap",
+                 (nodes[i].set = get_bitmap(test_nodes[i].map, 10)));
+       }
+
+       T("failed: mem2node__init", !mem2node__init(&map, &env));
+       T("failed: mem2node__node",  0 == mem2node__node(&map,   0x50));
+       T("failed: mem2node__node",  1 == mem2node__node(&map,  0x100));
+       T("failed: mem2node__node",  1 == mem2node__node(&map,  0x250));
+       T("failed: mem2node__node",  3 == mem2node__node(&map,  0x500));
+       T("failed: mem2node__node",  3 == mem2node__node(&map,  0x650));
+       T("failed: mem2node__node", -1 == mem2node__node(&map,  0x450));
+       T("failed: mem2node__node", -1 == mem2node__node(&map, 0x1050));
+
+       for (i = 0; i < ARRAY_SIZE(nodes); i++)
+               free(nodes[i].set);
+
+       mem2node__exit(&map);
+       return 0;
+}

diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h
index 9f51eda..a9760e7 100644 (file)
--- a/tools/perf/tests/tests.h
+++ b/tools/perf/tests/tests.h
@@ -103,6 +103,7 @@ int test__clang(struct test *test, int subtest);
 const char *test__clang_subtest_get_desc(int subtest);
 int test__clang_subtest_get_nr(void);
 int test__unit_number__scnprint(struct test *test, int subtest);
+int test__mem2node(struct test *t, int subtest);
 
 bool test__bp_signal_is_supported(void);