[Intel-gfx] [CI] drm/i915/gt: Fix termination condition for freeing all buffer objects

[Chris Wilson]

A last minute change, that unfortunately broke CI so badly it declared
SUCCESS, was to refactor the debug free all buffer pool code to reuse
the normal worker, inverted the termination condition so that it instead
of discarding the nodes, they were all declared young enough and
eligible for reuse.

Fixes: 03cc6e2cb6da ("drm/i915/gt: Delay taking the spinlock for grabbing from the buffer pool")
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/gt/intel_gt_buffer_pool.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_gt_buffer_pool.c b/drivers/gpu/drm/i915/gt/intel_gt_buffer_pool.c
index 16dbf5436179..09351868bf02 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt_buffer_pool.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt_buffer_pool.c
@@ -230,7 +230,7 @@ void intel_gt_flush_buffer_pool(struct intel_gt *gt)
 	struct intel_gt_buffer_pool *pool = &gt->buffer_pool;
 
 	do {
-		while (pool_free_older_than(pool, jiffies + 1))
+		while (pool_free_older_than(pool, jiffies - LONG_MAX))
 			;
 	} while (cancel_delayed_work_sync(&pool->work));
 }
-- 
2.20.1