[igt-dev] [PATCH v3 i-g-t 15/15] tests/i915/gem_exec_capture: Restore engines

[John.C.Harrison at Intel.com]

From: John Harrison <John.C.Harrison at Intel.com>

The test was updated some engine properties but not restoring them
afterwards. That would leave the system in a non-default state which
could potentially affect subsequent tests. Fix it by using the new
save/restore engine properties helper functions.

Signed-off-by: John Harrison <John.C.Harrison at Intel.com>
---
 tests/i915/gem_exec_capture.c | 37 ++++++++++++++++++++++++++---------
 1 file changed, 28 insertions(+), 9 deletions(-)

diff --git a/tests/i915/gem_exec_capture.c b/tests/i915/gem_exec_capture.c
index 9beb36fc7..51db07c41 100644
--- a/tests/i915/gem_exec_capture.c
+++ b/tests/i915/gem_exec_capture.c
@@ -209,14 +209,21 @@ static int check_error_state(int dir, struct offset *obj_offsets, int obj_count,
 	return blobs;
 }
 
-static void configure_hangs(int fd, const struct intel_execution_engine2 *e, int ctxt_id)
+static struct gem_engine_properties
+configure_hangs(int fd, const struct intel_execution_engine2 *e, int ctxt_id)
 {
+	struct gem_engine_properties props;
+
 	/* Ensure fast hang detection */
-	gem_engine_property_printf(fd, e->name, "preempt_timeout_ms", "%d", 250);
-	gem_engine_property_printf(fd, e->name, "heartbeat_interval_ms", "%d", 500);
+	props.engine = e;
+	props.preempt_timeout = 250;
+	props.heartbeat_interval = 500;
+	gem_engine_properties_configure(fd, &props);
 
 	/* Allow engine based resets and disable banning */
 	igt_allow_hang(fd, ctxt_id, HANG_ALLOW_CAPTURE | HANG_WANT_ENGINE_RESET);
+
+	return props;
 }
 
 static bool fence_busy(int fence)
@@ -256,8 +263,9 @@ static void __capture1(int fd, int dir, uint64_t ahnd, const intel_ctx_t *ctx,
 	uint32_t *batch, *seqno;
 	struct offset offset;
 	int i, fence_out;
+	struct gem_engine_properties saved_engine;
 
-	configure_hangs(fd, e, ctx->id);
+	saved_engine = configure_hangs(fd, e, ctx->id);
 
 	memset(obj, 0, sizeof(obj));
 	obj[SCRATCH].handle = gem_create_in_memory_regions(fd, 4096, region);
@@ -371,6 +379,8 @@ static void __capture1(int fd, int dir, uint64_t ahnd, const intel_ctx_t *ctx,
 	gem_close(fd, obj[BATCH].handle);
 	gem_close(fd, obj[NOCAPTURE].handle);
 	gem_close(fd, obj[SCRATCH].handle);
+
+	gem_engine_properties_restore(fd, &saved_engine);
 }
 
 static void capture(int fd, int dir, const intel_ctx_t *ctx,
@@ -417,8 +427,9 @@ __captureN(int fd, int dir, uint64_t ahnd, const intel_ctx_t *ctx,
 	uint32_t *batch, *seqno;
 	struct offset *offsets;
 	int i, fence_out;
+	struct gem_engine_properties saved_engine;
 
-	configure_hangs(fd, e, ctx->id);
+	saved_engine = configure_hangs(fd, e, ctx->id);
 
 	offsets = calloc(count, sizeof(*offsets));
 	igt_assert(offsets);
@@ -559,10 +570,12 @@ __captureN(int fd, int dir, uint64_t ahnd, const intel_ctx_t *ctx,
 
 	qsort(offsets, count, sizeof(*offsets), cmp);
 	igt_assert(offsets[0].addr <= offsets[count-1].addr);
+
+	gem_engine_properties_restore(fd, &saved_engine);
 	return offsets;
 }
 
-#define find_first_available_engine(fd, ctx, e) \
+#define find_first_available_engine(fd, ctx, e, saved) \
 	do { \
 		ctx = intel_ctx_create_all_physical(fd); \
 		igt_assert(ctx); \
@@ -570,7 +583,7 @@ __captureN(int fd, int dir, uint64_t ahnd, const intel_ctx_t *ctx,
 			for_each_if(gem_class_can_store_dword(fd, e->class)) \
 				break; \
 		igt_assert(e); \
-		configure_hangs(fd, e, ctx->id); \
+		saved = configure_hangs(fd, e, ctx->id); \
 	} while(0)
 
 static void many(int fd, int dir, uint64_t size, unsigned int flags)
@@ -580,8 +593,9 @@ static void many(int fd, int dir, uint64_t size, unsigned int flags)
 	uint64_t ram, gtt, ahnd;
 	unsigned long count, blobs;
 	struct offset *offsets;
+	struct gem_engine_properties saved_engine;
 
-	find_first_available_engine(fd, ctx, e);
+	find_first_available_engine(fd, ctx, e, saved_engine);
 
 	gtt = gem_aperture_size(fd) / size;
 	ram = (intel_get_avail_ram_mb() << 20) / size;
@@ -602,6 +616,8 @@ static void many(int fd, int dir, uint64_t size, unsigned int flags)
 
 	free(offsets);
 	put_ahnd(ahnd);
+
+	gem_engine_properties_restore(fd, &saved_engine);
 }
 
 static void prioinv(int fd, int dir, const intel_ctx_t *ctx,
@@ -697,8 +713,9 @@ static void userptr(int fd, int dir)
 	void *ptr;
 	int obj_size = 4096;
 	uint32_t system_region = INTEL_MEMORY_REGION_ID(I915_SYSTEM_MEMORY, 0);
+	struct gem_engine_properties saved_engine;
 
-	find_first_available_engine(fd, ctx, e);
+	find_first_available_engine(fd, ctx, e, saved_engine);
 
 	igt_assert(posix_memalign(&ptr, obj_size, obj_size) == 0);
 	memset(ptr, 0, obj_size);
@@ -710,6 +727,8 @@ static void userptr(int fd, int dir)
 	gem_close(fd, handle);
 	put_ahnd(ahnd);
 	free(ptr);
+
+	gem_engine_properties_restore(fd, &saved_engine);
 }
 
 static bool has_capture(int fd)
-- 
2.25.1