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drm: kselftest for drm_mm and restricted color eviction

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Check that after applying the driver's color adjustment, restricted
eviction scanning finds a suitable hole.

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/20161222083641.2691-20-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2016-12-22 08:36:22 +00:00 committed by Daniel Vetter
parent c1b702c9a5
commit d1bac3a781
2 changed files with 113 additions and 4 deletions
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1
drivers/gpu/drm/selftests/drm_mm_selftests.h
View File

@ -20,3 +20,4 @@ selftest(evict_range, igt_evict_range)
selftest(topdown, igt_topdown)
selftest(color, igt_color)
selftest(color_evict, igt_color_evict)
selftest(color_evict_range, igt_color_evict_range)

116
drivers/gpu/drm/selftests/test-drm_mm.c
View File

@ -1855,6 +1855,7 @@ static int igt_color(void *ignored)
}
static int evict_color(struct drm_mm *mm,
u64 range_start, u64 range_end,
struct evict_node *nodes,
unsigned int *order,
unsigned int count,
@ -1868,7 +1869,9 @@ static int evict_color(struct drm_mm *mm,
struct drm_mm_node tmp;
int err;
drm_mm_init_scan(mm, size, alignment, color);
drm_mm_init_scan_with_range(mm,
size, alignment, color,
range_start, range_end);
if (!evict_nodes(mm,
nodes, order, count,
&evict_list))
@ -1886,6 +1889,12 @@ static int evict_color(struct drm_mm *mm,
return err;
}
if (tmp.start < range_start || tmp.start + tmp.size > range_end) {
pr_err("Inserted [address=%llu + %llu] did not fit into the request range [%llu, %llu]\n",
tmp.start, tmp.size, range_start, range_end);
err = -EINVAL;
}
if (colors_abutt(&tmp))
err = -EINVAL;
@ -1954,7 +1963,7 @@ static int igt_color_evict(void *ignored)
for (mode = evict_modes; mode->name; mode++) {
for (n = 1; n <= total_size; n <<= 1) {
drm_random_reorder(order, total_size, &prng);
err = evict_color(&mm,
err = evict_color(&mm, 0, U64_MAX,
nodes, order, total_size,
n, 1, color++,
mode);
@ -1967,7 +1976,7 @@ static int igt_color_evict(void *ignored)
for (n = 1; n < total_size; n <<= 1) {
drm_random_reorder(order, total_size, &prng);
err = evict_color(&mm,
err = evict_color(&mm, 0, U64_MAX,
nodes, order, total_size,
total_size/2, n, color++,
mode);
@ -1984,7 +1993,7 @@ static int igt_color_evict(void *ignored)
DRM_MM_BUG_ON(!nsize);
drm_random_reorder(order, total_size, &prng);
err = evict_color(&mm,
err = evict_color(&mm, 0, U64_MAX,
nodes, order, total_size,
nsize, n, color++,
mode);
@ -2010,6 +2019,105 @@ static int igt_color_evict(void *ignored)
return ret;
}
static int igt_color_evict_range(void *ignored)
{
DRM_RND_STATE(prng, random_seed);
const unsigned int total_size = 8192;
const unsigned int range_size = total_size / 2;
const unsigned int range_start = total_size / 4;
const unsigned int range_end = range_start + range_size;
const struct insert_mode *mode;
unsigned long color = 0;
struct drm_mm mm;
struct evict_node *nodes;
struct drm_mm_node *node, *next;
unsigned int *order, n;
int ret, err;
/* Like igt_color_evict(), but limited to small portion of the full
* drm_mm range.
*/
ret = -ENOMEM;
nodes = vzalloc(total_size * sizeof(*nodes));
if (!nodes)
goto err;
order = drm_random_order(total_size, &prng);
if (!order)
goto err_nodes;
ret = -EINVAL;
drm_mm_init(&mm, 0, 2*total_size - 1);
mm.color_adjust = separate_adjacent_colors;
for (n = 0; n < total_size; n++) {
if (!expect_insert(&mm, &nodes[n].node,
1, 0, color++,
&insert_modes[0])) {
pr_err("insert failed, step %d\n", n);
goto out;
}
}
for (mode = evict_modes; mode->name; mode++) {
for (n = 1; n <= range_size; n <<= 1) {
drm_random_reorder(order, range_size, &prng);
err = evict_color(&mm, range_start, range_end,
nodes, order, total_size,
n, 1, color++,
mode);
if (err) {
pr_err("%s evict_color(size=%u) failed for range [%x, %x]\n",
mode->name, n, range_start, range_end);
goto out;
}
}
for (n = 1; n < range_size; n <<= 1) {
drm_random_reorder(order, total_size, &prng);
err = evict_color(&mm, range_start, range_end,
nodes, order, total_size,
range_size/2, n, color++,
mode);
if (err) {
pr_err("%s evict_color(size=%u, alignment=%u) failed for range [%x, %x]\n",
mode->name, total_size/2, n, range_start, range_end);
goto out;
}
}
for_each_prime_number_from(n, 1, min(range_size, max_prime)) {
unsigned int nsize = (range_size - n + 1) / 2;
DRM_MM_BUG_ON(!nsize);
drm_random_reorder(order, total_size, &prng);
err = evict_color(&mm, range_start, range_end,
nodes, order, total_size,
nsize, n, color++,
mode);
if (err) {
pr_err("%s evict_color(size=%u, alignment=%u) failed for range [%x, %x]\n",
mode->name, nsize, n, range_start, range_end);
goto out;
}
}
}
ret = 0;
out:
if (ret)
drm_mm_debug_table(&mm, __func__);
drm_mm_for_each_node_safe(node, next, &mm)
drm_mm_remove_node(node);
drm_mm_takedown(&mm);
kfree(order);
err_nodes:
vfree(nodes);
err:
return ret;
}
#include "drm_selftest.c"
static int __init test_drm_mm_init(void)