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drm: kselftest for drm_mm_debug()

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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
This commit is contained in:
Chris Wilson 2016-12-22 08:36:11 +00:00 committed by Daniel Vetter
parent 393b50f305
commit 06df8ac682
2 changed files with 36 additions and 0 deletions
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1
drivers/gpu/drm/selftests/drm_mm_selftests.h
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@ -7,3 +7,4 @@
*/
selftest(sanitycheck, igt_sanitycheck) /* keep first (selfcheck for igt) */
selftest(init, igt_init)
selftest(debug, igt_debug)

35
drivers/gpu/drm/selftests/test-drm_mm.c
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@ -141,6 +141,41 @@ static int igt_init(void *ignored)
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)