From deeee411a97559096523f97655ff16da34cf0573 Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Fri, 21 Feb 2020 10:09:53 +0000
Subject: [PATCH] drm/i915/gem: Break up long lists of object reclaim

Call cond_resched() between each freed object in case we have a really,
really long list, and we don't want to block normal processes.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200221100953.2587176-1-chris@chris-wilson.co.uk
---
 drivers/gpu/drm/i915/gem/i915_gem_object.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.c b/drivers/gpu/drm/i915/gem/i915_gem_object.c
index 35985218bd857..5da9f9e534b94 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_object.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_object.c
@@ -225,6 +225,7 @@ static void __i915_gem_free_objects(struct drm_i915_private *i915,
 
 		/* But keep the pointer alive for RCU-protected lookups */
 		call_rcu(&obj->rcu, __i915_gem_free_object_rcu);
+		cond_resched();
 	}
 	intel_runtime_pm_put(&i915->runtime_pm, wakeref);
 }
-- 
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