[PATCH] drm/i915/selftests: Use less in contexts steal guc id test

[Matthew Brost]

Using more guc_ids in the stealing guc id test has no real benefit.
Tearing down lots of contexts all at the same time takes a bit of time
due to the H2G / G2H ping-pong with the GuC. On some slower platforms
this can cause timeous when flushing the test as the GT isn't idle when
this ping-pong is happening. Reduce the number of guc ids to speed up
the flushing of the test.

Link: https://gitlab.freedesktop.org/drm/intel/-/issues/4821
Signed-off-by: Matthew Brost <matthew.brost at intel.com>
---
 drivers/gpu/drm/i915/gt/uc/selftest_guc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/gt/uc/selftest_guc.c b/drivers/gpu/drm/i915/gt/uc/selftest_guc.c
index d3327b802b761..a115894d5896e 100644
--- a/drivers/gpu/drm/i915/gt/uc/selftest_guc.c
+++ b/drivers/gpu/drm/i915/gt/uc/selftest_guc.c
@@ -157,7 +157,7 @@ static int intel_guc_steal_guc_ids(void *arg)
 	wakeref = intel_runtime_pm_get(gt->uncore->rpm);
 	engine = intel_selftest_find_any_engine(gt);
 	sv = guc->submission_state.num_guc_ids;
-	guc->submission_state.num_guc_ids = 4096;
+	guc->submission_state.num_guc_ids = 512;
 
 	/* Create spinner to block requests in below loop */
 	ce[context_index] = intel_context_create(engine);
-- 
2.34.1