[PATCH i-g-t] i915/gem_spin_batch: Convert to dynamic engine discovery

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Only run the tests on the available engines using igt_dynamic. This
prevents flip-flops with SKIP on shards that have a mixture of machine
types (e.g. shard-icl that has some machines with vcs1 and some
without).

Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
 tests/i915/gem_spin_batch.c | 82 ++++++++++++++++++-------------------
 1 file changed, 39 insertions(+), 43 deletions(-)

diff --git a/tests/i915/gem_spin_batch.c b/tests/i915/gem_spin_batch.c
index 0a5cfdf36..c2ce2373b 100644
--- a/tests/i915/gem_spin_batch.c
+++ b/tests/i915/gem_spin_batch.c
@@ -35,7 +35,7 @@
 		     #x, #ref, (long long)x, tolerance, (long long)ref)
 
 static void spin(int fd,
-		 const struct intel_execution_engine2 *e2,
+		 unsigned int engine,
 		 unsigned int flags,
 		 unsigned int timeout_sec)
 {
@@ -46,10 +46,10 @@ static void spin(int fd,
 	struct timespec itv = { };
 	uint64_t elapsed;
 
-	spin = __igt_spin_new(fd, .engine = e2->flags, .flags = flags);
+	spin = __igt_spin_new(fd, .engine = engine, .flags = flags);
 	while ((elapsed = igt_nsec_elapsed(&tv)) >> 30 < timeout_sec) {
 		igt_spin_t *next =
-			__igt_spin_new(fd, .engine = e2->flags, .flags = flags);
+			__igt_spin_new(fd, .engine = engine, .flags = flags);
 
 		igt_spin_set_timeout(spin,
 				     timeout_100ms - igt_nsec_elapsed(&itv));
@@ -75,14 +75,13 @@ static void spin(int fd,
 #define RESUBMIT_NEW_CTX     (1 << 0)
 #define RESUBMIT_ALL_ENGINES (1 << 1)
 
-static void spin_resubmit(int fd, const struct intel_execution_engine2 *e2,
-			  unsigned int flags)
+static void spin_resubmit(int fd, unsigned int engine, unsigned int flags)
 {
 	const uint32_t ctx0 = gem_context_clone_with_engines(fd, 0);
 	const uint32_t ctx1 =
 		(flags & RESUBMIT_NEW_CTX) ?
 		gem_context_clone_with_engines(fd, 0) : ctx0;
-	igt_spin_t *spin = __igt_spin_new(fd, .ctx = ctx0, .engine = e2->flags);
+	igt_spin_t *spin = __igt_spin_new(fd, .ctx = ctx0, .engine = engine);
 	const struct intel_execution_engine2 *other;
 
 	struct drm_i915_gem_execbuffer2 eb = {
@@ -96,14 +95,14 @@ static void spin_resubmit(int fd, const struct intel_execution_engine2 *e2,
 
 	if (flags & RESUBMIT_ALL_ENGINES) {
 		for_each_context_engine(fd, ctx1, other) {
-			if (gem_engine_is_equal(other, e2))
+			if (other->flags == engine)
 				continue;
 
 			eb.flags = other->flags;
 			gem_execbuf(fd, &eb);
 		}
 	} else {
-		eb.flags = e2->flags;
+		eb.flags = engine;
 		gem_execbuf(fd, &eb);
 	}
 
@@ -132,7 +131,7 @@ spin_on_all_engines(int fd, unsigned long flags, unsigned int timeout_sec)
 	__for_each_physical_engine(fd, e2) {
 		igt_fork(child, 1) {
 			igt_install_exit_handler(spin_exit_handler);
-			spin(fd, e2, flags, timeout_sec);
+			spin(fd, e2->flags, flags, timeout_sec);
 		}
 	}
 
@@ -181,7 +180,6 @@ igt_main
 {
 	const struct intel_execution_engine2 *e2;
 	const struct intel_execution_ring *e;
-	struct intel_execution_engine2 e2__;
 	int fd = -1;
 
 	igt_fixture {
@@ -190,51 +188,49 @@ igt_main
 		igt_fork_hang_detector(fd);
 	}
 
-	for (e = intel_execution_rings; e->name; e++) {
-		e2__ = gem_eb_flags_to_engine(eb_ring(e));
-		if (e2__.flags == -1)
-			continue;
-		e2 = &e2__;
+#define test_each_legacy_ring(test) \
+	igt_subtest_with_dynamic(test) \
+		for (e = intel_execution_rings; e->name; e++) \
+			if (gem_has_ring(fd, eb_ring(e))) \
+				igt_dynamic_f("%s", e->name)
 
-		igt_subtest_f("legacy-%s", e->name) {
-			igt_require(gem_has_ring(fd, eb_ring(e)));
-			spin(fd, e2, 0, 3);
-		}
+	test_each_legacy_ring("legacy")
+		spin(fd, eb_ring(e), 0, 3);
+	test_each_legacy_ring("legacy-resubmit")
+		spin_resubmit(fd, eb_ring(e), 0);
+	test_each_legacy_ring("legacy-resubmit-new")
+		spin_resubmit(fd, eb_ring(e), RESUBMIT_NEW_CTX);
 
-		igt_subtest_f("legacy-resubmit-%s", e->name) {
-			igt_require(gem_has_ring(fd, eb_ring(e)));
-			spin_resubmit(fd, e2, 0);
-		}
-
-		igt_subtest_f("legacy-resubmit-new-%s", e->name) {
-			igt_require(gem_has_ring(fd, eb_ring(e)));
-			spin_resubmit(fd, e2, RESUBMIT_NEW_CTX);
-		}
-	}
+#undef test_each_legcy_ring
 
 	igt_subtest("spin-all")
 		spin_all(fd, 0);
 	igt_subtest("spin-all-new")
 		spin_all(fd, PARALLEL_SPIN_NEW_CTX);
 
-	__for_each_physical_engine(fd, e2) {
-		igt_subtest_f("%s", e2->name)
-			spin(fd, e2, 0, 3);
+#define test_each_engine(test) \
+	igt_subtest_with_dynamic(test) \
+		__for_each_physical_engine(fd, e2) \
+			igt_dynamic_f("%s", e2->name)
 
-		igt_subtest_f("resubmit-%s", e2->name)
-			spin_resubmit(fd, e2, 0);
+	test_each_engine("engines")
+		spin(fd, e2->flags, 0, 3);
 
-		igt_subtest_f("resubmit-new-%s", e2->name)
-			spin_resubmit(fd, e2, RESUBMIT_NEW_CTX);
+	test_each_engine("resubmit")
+		spin_resubmit(fd, e2->flags, 0);
 
-		igt_subtest_f("resubmit-all-%s", e2->name)
-			spin_resubmit(fd, e2, RESUBMIT_ALL_ENGINES);
+	test_each_engine("resubmit-new")
+		spin_resubmit(fd, e2->flags, RESUBMIT_NEW_CTX);
 
-		igt_subtest_f("resubmit-new-all-%s", e2->name)
-			spin_resubmit(fd, e2,
-				      RESUBMIT_NEW_CTX |
-				      RESUBMIT_ALL_ENGINES);
-	}
+	test_each_engine("resubmit-all")
+		spin_resubmit(fd, e2->flags, RESUBMIT_ALL_ENGINES);
+
+	test_each_engine("resubmit-new-all")
+		spin_resubmit(fd, e2->flags,
+			      RESUBMIT_NEW_CTX |
+			      RESUBMIT_ALL_ENGINES);
+
+#undef test_each_engine
 
 	igt_subtest("spin-each")
 		spin_on_all_engines(fd, 0, 3);
-- 
2.30.0

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