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authorChris Wilson <chris@chris-wilson.co.uk>2016-12-22 11:36:11 +0300
committerDaniel Vetter <daniel.vetter@ffwll.ch>2016-12-27 14:36:42 +0300
commit06df8ac682e6a00e6e32d105208953ca5323cc82 (patch)
tree240edb03bf62727c923b45a624be4e0da2240987 /drivers/gpu/drm/selftests
parent393b50f30566ba596bcd3e94ce6d59af4f184025 (diff)
downloadlinux-06df8ac682e6a00e6e32d105208953ca5323cc82.tar.xz
drm: kselftest for drm_mm_debug()
Simple test to just exercise calling the debug dumper on the drm_mm. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/20161222083641.2691-9-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/selftests')
-rw-r--r--drivers/gpu/drm/selftests/drm_mm_selftests.h1
-rw-r--r--drivers/gpu/drm/selftests/test-drm_mm.c35
2 files changed, 36 insertions, 0 deletions
diff --git a/drivers/gpu/drm/selftests/drm_mm_selftests.h b/drivers/gpu/drm/selftests/drm_mm_selftests.h
index 844dd29db540..0265f09e92fa 100644
--- a/drivers/gpu/drm/selftests/drm_mm_selftests.h
+++ b/drivers/gpu/drm/selftests/drm_mm_selftests.h
@@ -7,3 +7,4 @@
*/
selftest(sanitycheck, igt_sanitycheck) /* keep first (selfcheck for igt) */
selftest(init, igt_init)
+selftest(debug, igt_debug)
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)