[PATCH v2 4/9] tests/intel/xe_exec_reset: add gt-stress-reset-bo-invalidation subtest

[nishit.sharma@intel.com]

From: Nishit Sharma <nishit.sharma@intel.com>

Add BO invalidation coverage to the GT reset stress path. This extends
reset stress coverage to BO mapping invalidation scenarios while keeping
the existing stress harness and default behavior intact.

Signed-off-by: Nishit Sharma <nishit.sharma@intel.com>
---
 tests/intel/xe_exec_reset.c | 57 +++++++++++++++++++++++++++++++++++--
 1 file changed, 54 insertions(+), 3 deletions(-)

diff --git a/tests/intel/xe_exec_reset.c b/tests/intel/xe_exec_reset.c
index 825fc6aa1..2a822b29b 100644
--- a/tests/intel/xe_exec_reset.c
+++ b/tests/intel/xe_exec_reset.c
@@ -135,6 +135,7 @@ static void test_spin(int fd, struct drm_xe_engine_class_instance *eci,
 #define SECONDARY_QUEUE			(0x1 << 15)
 #define RESET_SYNC_MODE			(0x1 << 16)
 #define MEM_PRESSURE_STRESS		(0x1 << 17)
+#define INVALIDATE_BO_STRESS		(0x1 << 18)
 
 /**
  * SUBTEST: %s-cat-error
@@ -655,10 +656,41 @@ struct gt_thread_data {
 	int *num_reset;
 	int *num_submit;
 	int *num_submit_fail;
+	int *num_vm_recreate;
 	unsigned int flags;
 	bool do_reset;
 };
 
+static void bo_ctx_destroy(int fd, uint32_t *vm, uint32_t *bo,
+			   uint32_t **data, size_t bo_size)
+{
+	if (*data) {
+		munmap(*data, bo_size);
+		*data = NULL;
+	}
+
+	if (*bo) {
+		gem_close(fd, *bo);
+		*bo = 0;
+	}
+
+	if (*vm) {
+		xe_vm_destroy(fd, *vm);
+		*vm = 0;
+	}
+}
+
+static void bo_ctx_create(int fd, int gt, uint64_t addr, size_t bo_size,
+			  uint32_t *vm, uint32_t *bo, uint32_t **data)
+{
+	*vm = xe_vm_create(fd, 0, 0);
+	*bo = xe_bo_create(fd, *vm, bo_size, vram_if_possible(fd, gt),
+			   DRM_XE_GEM_CREATE_FLAG_NEEDS_VISIBLE_VRAM);
+	*data = xe_bo_map(fd, *bo, bo_size);
+	(*data)[0] = MI_BATCH_BUFFER_END;
+	xe_vm_bind_sync(fd, *vm, *bo, 0, addr, bo_size);
+}
+
 static void pressure_bo_create(int fd, uint32_t vm, int gt,
 			       uint32_t *bos, int *count)
 {
@@ -746,6 +778,19 @@ static void submit_jobs(struct gt_thread_data *t)
 			pressure_bo_create(fd, vm, t->gt, pressure_bos, &pressure_count);
 		}
 
+		if (((t->flags & INVALIDATE_BO_STRESS) && !(i % 96))) {
+			if (t->flags & MEM_PRESSURE_STRESS) {
+				pressure_bo_destroy(fd, pressure_bos, pressure_count);
+				pressure_count = 0;
+			}
+
+			bo_ctx_destroy(fd, &vm, &bo, &data, bo_size);
+			bo_ctx_create(fd, t->gt, addr, bo_size, &vm, &bo, &data);
+			if (t->flags & MEM_PRESSURE_STRESS)
+				pressure_bo_create(fd, vm, t->gt, pressure_bos, &pressure_count);
+			(*t->num_vm_recreate)++;
+		}
+
 		i++;
 	}
 
@@ -791,6 +836,10 @@ static void *gt_reset_thread(void *data)
  * Description: Stress concurrent GT resets and job submissions under memory pressure
  * Test category: stress test
  *
+ * SUBTEST: gt-stress-reset-bo-invalidation
+ * Description: Stress concurrent GT resets and job submissions while invalidating BO CPU mappings
+ * Test category: stress test
+ *
  */
 static void
 gt_reset(int fd, int gt, int n_threads, int n_sec, unsigned int flags)
@@ -799,7 +848,7 @@ gt_reset(int fd, int gt, int n_threads, int n_sec, unsigned int flags)
 	pthread_mutex_t mutex;
 	pthread_cond_t cond;
 	int go = 0, exit = 0, num_reset = 0, i;
-	int num_submit = 0, num_submit_fail = 0;
+	int num_submit = 0, num_submit_fail = 0, num_vm_recreate = 0;
 
 	threads = calloc(n_threads, sizeof(struct gt_thread_data));
 	igt_assert(threads);
@@ -818,6 +867,7 @@ gt_reset(int fd, int gt, int n_threads, int n_sec, unsigned int flags)
 		threads[i].num_reset = &num_reset;
 		threads[i].num_submit = &num_submit;
 		threads[i].num_submit_fail = &num_submit_fail;
+		threads[i].num_vm_recreate = &num_vm_recreate;
 		threads[i].do_reset = (i == 0);
 
 		pthread_create(&threads[i].thread, 0, gt_reset_thread,
@@ -835,8 +885,8 @@ gt_reset(int fd, int gt, int n_threads, int n_sec, unsigned int flags)
 	for (i = 0; i < n_threads; i++)
 		pthread_join(threads[i].thread, NULL);
 
-	igt_info("number of resets %d, submissions %d, submit fails %d\n",
-		 num_reset, num_submit, num_submit_fail);
+	igt_info("number of resets %d, submissions %d, submit fails %d vm_recreate %d\n",
+		 num_reset, num_submit, num_submit_fail, num_vm_recreate);
 
 	igt_assert_neq(num_reset, 0);
 	igt_assert_neq(num_submit, 0);
@@ -1010,6 +1060,7 @@ int igt_main()
 		{ "reset-concurrent-submit", 0 },
 		{ "reset-concurrent-submit-sync", RESET_SYNC_MODE },
 		{ "reset-memory-pressure", MEM_PRESSURE_STRESS },
+		{ "reset-bo-invalidation", INVALIDATE_BO_STRESS },
 		{ NULL },
 	};
 	int gt;
-- 
2.43.0