We can be more aggressive in our testing by launching a number of
kthreads, where each is submitting its own copy or fill batches on a set
of random sized objects. Also since the underlying fill and copy batches
can be pre-empted mid-batch(for particularly large objects), throw in a
random mixture of ctx priorities per thread to make pre-emption a
possibility.
Signed-off-by: Matthew Auld <matthew.auld@xxxxxxxxx>
Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
.../i915/gem/selftests/i915_gem_object_blt.c | 144 +++++++++++++++---
1 file changed, 121 insertions(+), 23 deletions(-)
diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_object_blt.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_object_blt.c
index 9ec55b3a3815..41e0bd6a175c 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_object_blt.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_object_blt.c
@@ -7,34 +7,53 @@
#include "i915_selftest.h"
+#include "gem/i915_gem_context.h"
#include "selftests/igt_flush_test.h"
+#include "selftests/i915_random.h"
#include "selftests/mock_drm.h"
#include "huge_gem_object.h"
#include "mock_context.h"
-static int igt_fill_blt(void *arg)
+struct igt_thread_arg {
+ struct drm_i915_private *i915;
+ struct rnd_state *prng;
+};
+
+static int igt_fill_blt_thread(void *arg)
{
- struct drm_i915_private *i915 = arg;
- struct intel_context *ce = i915->engine[BCS0]->kernel_context;
+ struct igt_thread_arg *thread = arg;
+ struct drm_i915_private *i915 = thread->i915;
+ struct rnd_state *prng = thread->prng;
struct drm_i915_gem_object *obj;
- struct rnd_state prng;
+ struct i915_gem_context *ctx;
+ struct intel_context *ce;
+ struct drm_file *file;
+ unsigned int prio;
IGT_TIMEOUT(end);
- u32 *vaddr;
- int err = 0;
+ int err;
+
+ file = mock_file(i915);
+ if (IS_ERR(file))
+ return PTR_ERR(file);
+
+ ctx = live_context(i915, file);
+ if (IS_ERR(ctx)) {
+ err = PTR_ERR(ctx);
+ goto out_file;
+ }
- prandom_seed_state(&prng, i915_selftest.random_seed);
+ prio = prandom_u32_state(prng) % I915_PRIORITY_MAX;
+ ctx->sched.priority = I915_USER_PRIORITY(prio);
- /*
- * XXX: needs some threads to scale all these tests, also maybe throw
- * in submission from higher priority context to see if we are
- * preempted for very large objects...
- */
+ ce = i915_gem_context_get_engine(ctx, BCS0);
+ GEM_BUG_ON(IS_ERR(ce));
do {
const u32 max_block_size = S16_MAX * PAGE_SIZE;
- u32 sz = min_t(u64, ce->vm->total >> 4, prandom_u32_state(&prng));
+ u32 sz = min_t(u64, ce->vm->total >> 4, prandom_u32_state(prng));
u32 phys_sz = sz % (max_block_size + 1);
- u32 val = prandom_u32_state(&prng);
+ u32 val = prandom_u32_state(prng);
+ u32 *vaddr;
u32 i;
sz = round_up(sz, PAGE_SIZE);
@@ -98,26 +117,47 @@ static int igt_fill_blt(void *arg)
if (err == -ENOMEM)
err = 0;
+ intel_context_put(ce);
+out_file:
+ mock_file_free(i915, file);
return err;
}
-static int igt_copy_blt(void *arg)
+static int igt_copy_blt_thread(void *arg)
{
- struct drm_i915_private *i915 = arg;
- struct intel_context *ce = i915->engine[BCS0]->kernel_context;
+ struct igt_thread_arg *thread = arg;
+ struct drm_i915_private *i915 = thread->i915;
+ struct rnd_state *prng = thread->prng;
struct drm_i915_gem_object *src, *dst;
- struct rnd_state prng;
+ struct i915_gem_context *ctx;
+ struct intel_context *ce;
+ struct drm_file *file;
+ unsigned int prio;
IGT_TIMEOUT(end);
- u32 *vaddr;
- int err = 0;
+ int err;
+
+ file = mock_file(i915);
+ if (IS_ERR(file))
+ return PTR_ERR(file);
+
+ ctx = live_context(i915, file);
+ if (IS_ERR(ctx)) {
+ err = PTR_ERR(ctx);
+ goto out_file;
+ }
- prandom_seed_state(&prng, i915_selftest.random_seed);
+ prio = prandom_u32_state(prng) % I915_PRIORITY_MAX;
+ ctx->sched.priority = I915_USER_PRIORITY(prio);
+
+ ce = i915_gem_context_get_engine(ctx, BCS0);
+ GEM_BUG_ON(IS_ERR(ce));
do {
const u32 max_block_size = S16_MAX * PAGE_SIZE;
- u32 sz = min_t(u64, ce->vm->total >> 4, prandom_u32_state(&prng));
+ u32 sz = min_t(u64, ce->vm->total >> 4, prandom_u32_state(prng));
u32 phys_sz = sz % (max_block_size + 1);
- u32 val = prandom_u32_state(&prng);
+ u32 val = prandom_u32_state(prng);
+ u32 *vaddr;
u32 i;
sz = round_up(sz, PAGE_SIZE);
@@ -201,9 +241,67 @@ static int igt_copy_blt(void *arg)
if (err == -ENOMEM)
err = 0;
+ intel_context_put(ce);
+out_file:
+ mock_file_free(i915, file);
+ return err;
+}
+
+static int igt_threaded_blt(struct drm_i915_private *i915,
+ int (*blt_fn)(void *arg))
+{
+
+ I915_RND_STATE(prng);
+ struct igt_thread_arg thread = { i915, &prng, };
+ struct task_struct **tsk;
+ unsigned int n_cpus;
+ unsigned int i;
+ int err = 0;
+
+ n_cpus = num_online_cpus() + 1;
+
+ tsk = kzalloc(n_cpus * sizeof(struct task_struct *), GFP_KERNEL);
+ if (!tsk)
+ return 0;
+
+ for (i = 0; i < n_cpus; ++i) {
+ tsk[i] = kthread_run(blt_fn, &thread, "igt/blt-%d", i);
+ if (IS_ERR(tsk[i])) {
+ err = PTR_ERR(tsk[i]);
+ break;
+ }
+
+ get_task_struct(tsk[i]);
+ }
+
+ for (i = 0; i < n_cpus; ++i) {
+ int status;
+
+ if (IS_ERR_OR_NULL(tsk[i]))
+ continue;
+
+ status = kthread_stop(tsk[i]);
+ if (status && !err)
+ err = status;
+
+ put_task_struct(tsk[i]);
+ }
+
+ kfree(tsk);
+
return err;
}
+static int igt_fill_blt(void *arg)
+{
+ return igt_threaded_blt(arg, igt_fill_blt_thread);
+}
+
+static int igt_copy_blt(void *arg)
+{
+ return igt_threaded_blt(arg, igt_copy_blt_thread);
+}
+
int i915_gem_object_blt_live_selftests(struct drm_i915_private *i915)
{
static const struct i915_subtest tests[] = {
--
2.20.1
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