When adding a new active timeline, place it at the end of the list. This
allows for intel_gt_retire_requests() to pick up the newcomer more
quickly and hopefully complete the retirement sooner. A miniscule
optimisation.

References: 7936a22dd466 ("drm/i915/gt: Wait for new requests in 
intel_gt_retire_requests()")
Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursu...@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursu...@intel.com>
---
 drivers/gpu/drm/i915/gt/intel_timeline.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_timeline.c 
b/drivers/gpu/drm/i915/gt/intel_timeline.c
index 16a9e88d93de..0e277835aad0 100644
--- a/drivers/gpu/drm/i915/gt/intel_timeline.c
+++ b/drivers/gpu/drm/i915/gt/intel_timeline.c
@@ -342,7 +342,7 @@ void intel_timeline_enter(struct intel_timeline *tl)
        GEM_BUG_ON(!tl->active_count); /* overflow? */
 
        spin_lock_irqsave(&timelines->lock, flags);
-       list_add(&tl->link, &timelines->active_list);
+       list_add_tail(&tl->link, &timelines->active_list);
        spin_unlock_irqrestore(&timelines->lock, flags);
 }
 
-- 
2.24.0

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