diff mbox series

[v4,i-g-t,11/15] tests/i915/i915_hangman: Don't let background contexts cause a ban

Message ID 20220113235118.1575410-12-John.C.Harrison@Intel.com (mailing list archive)
State New, archived
Headers show
Series Fixes for i915_hangman and gem_exec_capture | expand

Commit Message

John Harrison Jan. 13, 2022, 11:51 p.m. UTC 
From: John Harrison <John.C.Harrison@Intel.com>

The global context used by all the subtests for causing hangs is
marked as unbannable. However, some of the subtests set background
spinners running on all engines using a freshly created context. If
there is a test failure for any reason, all of those spinners can be
killed off as hanging contexts. On systems with lots of engines, that
can result in the test being banned from creating any new contexts.

So make the spinner contexts unbannable as well. That way if one
subtest fails it won't necessarily bring down all subsequent subtests.

v2: Simplify anti-banning code (review feedback from Matthew Brost).

Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
---
 tests/i915/i915_hangman.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)
diff mbox series

Patch

diff --git a/tests/i915/i915_hangman.c b/tests/i915/i915_hangman.c
index a1aeeba6d..e661b8ad0 100644
--- a/tests/i915/i915_hangman.c
+++ b/tests/i915/i915_hangman.c
@@ -284,6 +284,17 @@  static void test_error_state_capture(const intel_ctx_t *ctx,
 	check_alive();
 }
 
+static void context_unban(int fd, unsigned ctx)
+{
+	struct drm_i915_gem_context_param param = {
+		.ctx_id = ctx,
+		.param = I915_CONTEXT_PARAM_BANNABLE,
+		.value = 0,
+	};
+
+	gem_context_set_param(fd, &param);
+}
+
 static void
 test_engine_hang(const intel_ctx_t *ctx,
 		 const struct intel_execution_engine2 *e, unsigned int flags)
@@ -307,6 +318,7 @@  test_engine_hang(const intel_ctx_t *ctx,
 	num_ctx = 0;
 	for_each_ctx_engine(device, ctx, other) {
 		local_ctx[num_ctx] = intel_ctx_create(device, &ctx->cfg);
+		context_unban(device, local_ctx[num_ctx]->id);
 		ahndN = get_reloc_ahnd(device, local_ctx[num_ctx]->id);
 		spin = __igt_spin_new(device,
 				      .ahnd = ahndN,