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Commit 06df8ac6 authored by Chris Wilson's avatar Chris Wilson Committed by Daniel Vetter
Browse files

drm: kselftest for drm_mm_debug() 



Simple test to just exercise calling the debug dumper on the drm_mm.

Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: default avatarJoonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20161222083641.2691-9-chris@chris-wilson.co.uk
parent 393b50f3

drivers/gpu/drm/selftests/drm_mm_selftests.h

+1 −0
Original line number Diff line number Diff line
@@ -7,3 +7,4 @@ 
 */

selftest(sanitycheck, igt_sanitycheck) /* keep first (selfcheck for igt) */

selftest(init, igt_init)

selftest(debug, igt_debug)

drivers/gpu/drm/selftests/test-drm_mm.c

+35 −0
Original line number Diff line number Diff line
@@ -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)