diff options
Diffstat (limited to 'drivers/gpu/drm/selftests/test-drm_mm.c')
| -rw-r--r-- | drivers/gpu/drm/selftests/test-drm_mm.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/gpu/drm/selftests/test-drm_mm.c b/drivers/gpu/drm/selftests/test-drm_mm.c index 87ad147670da..434320061d9e 100644 --- a/drivers/gpu/drm/selftests/test-drm_mm.c +++ b/drivers/gpu/drm/selftests/test-drm_mm.c @@ -141,6 +141,41 @@ out: return ret; } +static int igt_debug(void *ignored) +{ + struct drm_mm mm; + struct drm_mm_node nodes[2]; + int ret; + + /* Create a small drm_mm with a couple of nodes and a few holes, and + * check that the debug iterator doesn't explode over a trivial drm_mm. + */ + + drm_mm_init(&mm, 0, 4096); + + memset(nodes, 0, sizeof(nodes)); + nodes[0].start = 512; + nodes[0].size = 1024; + ret = drm_mm_reserve_node(&mm, &nodes[0]); + if (ret) { + pr_err("failed to reserve node[0] {start=%lld, size=%lld)\n", + nodes[0].start, nodes[0].size); + return ret; + } + + nodes[1].size = 1024; + nodes[1].start = 4096 - 512 - nodes[1].size; + ret = drm_mm_reserve_node(&mm, &nodes[1]); + if (ret) { + pr_err("failed to reserve node[1] {start=%lld, size=%lld)\n", + nodes[1].start, nodes[1].size); + return ret; + } + + drm_mm_debug_table(&mm, __func__); + return 0; +} + #include "drm_selftest.c" static int __init test_drm_mm_init(void) |