[igt-dev] [PATCH i-g-t 76/89] tests/i915/gem_vm_create: Delete destroy racing tests

[Jason Ekstrand]

The races these tests attempt to exercise won't exist once we rework the
context creation to make the VM immutable state.

Signed-off-by: Jason Ekstrand <jason at jlekstrand.net>
---
 tests/i915/gem_vm_create.c | 104 -------------------------------------
 1 file changed, 104 deletions(-)

diff --git a/tests/i915/gem_vm_create.c b/tests/i915/gem_vm_create.c
index 954ba13e..f70f3d88 100644
--- a/tests/i915/gem_vm_create.c
+++ b/tests/i915/gem_vm_create.c
@@ -352,104 +352,6 @@ static void isolation(int i915)
 	gem_vm_destroy(i915, vm[0]);
 }
 
-static void async_destroy(int i915)
-{
-	struct drm_i915_gem_context_param arg = {
-		.ctx_id = gem_context_create(i915),
-		.value = gem_vm_create(i915),
-		.param = I915_CONTEXT_PARAM_VM,
-	};
-	igt_spin_t *spin[2];
-	int err;
-
-	spin[0] = igt_spin_new(i915,
-			       .ctx_id = arg.ctx_id,
-			       .flags = IGT_SPIN_POLL_RUN);
-	igt_spin_busywait_until_started(spin[0]);
-
-	err = __gem_context_set_param(i915, &arg);
-	if (err == -EBUSY) /* update while busy may be verboten, let it ride. */
-		err = 0;
-	igt_assert_eq(err, 0);
-
-	spin[1] = __igt_spin_new(i915, .ctx_id = arg.ctx_id);
-
-	igt_spin_end(spin[0]);
-	gem_sync(i915, spin[0]->handle);
-
-	gem_vm_destroy(i915, arg.value);
-	gem_context_destroy(i915, arg.ctx_id);
-
-	igt_spin_end(spin[1]);
-	gem_sync(i915, spin[1]->handle);
-
-	for (int i = 0; i < ARRAY_SIZE(spin); i++)
-		igt_spin_free(i915, spin[i]);
-}
-
-static void destroy_race(int i915)
-{
-	const int ncpus = sysconf(_SC_NPROCESSORS_ONLN);
-	uint32_t *vm;
-
-	/* Check we can execute a polling spinner */
-	igt_spin_free(i915, igt_spin_new(i915, .flags = IGT_SPIN_POLL_RUN));
-
-	vm = mmap(NULL, 4096, PROT_WRITE, MAP_SHARED | MAP_ANON, -1, 0);
-	igt_assert(vm != MAP_FAILED);
-
-	for (int child = 0; child < ncpus; child++)
-		vm[child] = gem_vm_create(i915);
-
-	igt_fork(child, ncpus) {
-		uint32_t ctx = gem_context_create(i915);
-		igt_spin_t *spin;
-
-		spin = __igt_spin_new(i915, ctx, .flags = IGT_SPIN_POLL_RUN);
-		while (!READ_ONCE(vm[ncpus])) {
-			struct drm_i915_gem_context_param arg = {
-				.ctx_id = ctx,
-				.param = I915_CONTEXT_PARAM_VM,
-				.value = READ_ONCE(vm[child]),
-			};
-			igt_spin_t *nxt;
-
-			if (__gem_context_set_param(i915, &arg))
-				continue;
-
-			nxt = __igt_spin_new(i915, ctx,
-					     .flags = IGT_SPIN_POLL_RUN);
-
-			igt_spin_end(spin);
-			gem_sync(i915, spin->handle);
-			igt_spin_free(i915, spin);
-
-			usleep(1000 + hars_petruska_f54_1_random_unsafe() % 2000);
-
-			spin = nxt;
-		}
-
-		igt_spin_free(i915, spin);
-		gem_context_destroy(i915, ctx);
-	}
-
-	igt_until_timeout(5) {
-		for (int child = 0; child < ncpus; child++) {
-			gem_vm_destroy(i915, vm[child]);
-			vm[child] = gem_vm_create(i915);
-		}
-		usleep(1000 + hars_petruska_f54_1_random_unsafe() % 2000);
-	}
-
-	vm[ncpus] = 1;
-	igt_waitchildren();
-
-	for (int child = 0; child < ncpus; child++)
-		gem_vm_destroy(i915, vm[child]);
-
-	munmap(vm, 4096);
-}
-
 igt_main
 {
 	int i915 = -1;
@@ -479,12 +381,6 @@ igt_main
 
 		igt_subtest("create-ext")
 			create_ext(i915);
-
-		igt_subtest("async-destroy")
-			async_destroy(i915);
-
-		igt_subtest("destroy-race")
-			destroy_race(i915);
 	}
 
 	igt_fixture {
-- 
2.31.1