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From:   "Joel Fernandes (Google)" <joel@joelfernandes.org>
To:     rcu@vger.kernel.org
Cc:     linux-kernel@vger.kernel.org, rushikesh.s.kadam@intel.com,
        urezki@gmail.com, neeraj.iitr10@gmail.com, frederic@kernel.org,
        paulmck@kernel.org, rostedt@goodmis.org, vineeth@bitbyteword.org,
        boqun.feng@gmail.com,
        "Joel Fernandes (Google)" <joel@joelfernandes.org>
Subject: [PATCH v5 17/18] i915: Move call_rcu() to call_rcu_lazy()
Date:   Thu,  1 Sep 2022 22:17:19 +0000
Message-Id: <20220901221720.1105021-18-joel@joelfernandes.org>
In-Reply-To: <20220901221720.1105021-1-joel@joelfernandes.org>
References: <20220901221720.1105021-1-joel@joelfernandes.org>
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This is required to prevent callbacks triggering RCU machinery too
quickly and too often, which adds more power to the system.

Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
---
 drivers/gpu/drm/i915/gem/i915_gem_object.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.c b/drivers/gpu/drm/i915/gem/i915_gem_object.c
index ccec4055fde3..21d6f66fb394 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_object.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_object.c
@@ -343,7 +343,7 @@ static void __i915_gem_free_objects(struct drm_i915_private *i915,
 		__i915_gem_free_object(obj);
 
 		/* But keep the pointer alive for RCU-protected lookups */
-		call_rcu(&obj->rcu, __i915_gem_free_object_rcu);
+		call_rcu_lazy(&obj->rcu, __i915_gem_free_object_rcu);
 		cond_resched();
 	}
 }
-- 
2.37.2.789.g6183377224-goog