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drm/i915/gt: Move new timelines to the end of active_list

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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: 7936a22dd4 ("drm/i915/gt: Wait for new requests in intel_gt_retire_requests()")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191119162559.3313003-1-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2019-11-19 16:25:58 +00:00
parent d18580b08b
commit 1683d24c14
1 changed files with 1 additions and 1 deletions
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drivers/gpu/drm/i915/gt/intel_timeline.c
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@ -342,7 +342,7 @@ void intel_timeline_enter(struct intel_timeline *tl)
GEM_BUG_ON(!tl->active_count); /* overflow? */ GEM_BUG_ON(!tl->active_count); /* overflow? */
spin_lock_irqsave(&timelines->lock, flags); 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); spin_unlock_irqrestore(&timelines->lock, flags);
} }