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Message-Id: <20220901221720.1105021-17-joel@joelfernandes.org>
Date: Thu, 1 Sep 2022 22:17:18 +0000
From: "Joel Fernandes (Google)" <joel@...lfernandes.org>
To: rcu@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, rushikesh.s.kadam@...el.com,
urezki@...il.com, neeraj.iitr10@...il.com, frederic@...nel.org,
paulmck@...nel.org, rostedt@...dmis.org, vineeth@...byteword.org,
boqun.feng@...il.com,
"Joel Fernandes (Google)" <joel@...lfernandes.org>
Subject: [PATCH v5 16/18] lib: Move call_rcu() to call_rcu_lazy()
Move radix-tree and xarray to call_rcu_lazy(). 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@...lfernandes.org>
---
lib/radix-tree.c | 2 +-
lib/xarray.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/lib/radix-tree.c b/lib/radix-tree.c
index 3c78e1e8b2ad..49c821b16acc 100644
--- a/lib/radix-tree.c
+++ b/lib/radix-tree.c
@@ -305,7 +305,7 @@ void radix_tree_node_rcu_free(struct rcu_head *head)
static inline void
radix_tree_node_free(struct radix_tree_node *node)
{
- call_rcu(&node->rcu_head, radix_tree_node_rcu_free);
+ call_rcu_lazy(&node->rcu_head, radix_tree_node_rcu_free);
}
/*
diff --git a/lib/xarray.c b/lib/xarray.c
index ea9ce1f0b386..230abc8045fe 100644
--- a/lib/xarray.c
+++ b/lib/xarray.c
@@ -257,7 +257,7 @@ static void xa_node_free(struct xa_node *node)
{
XA_NODE_BUG_ON(node, !list_empty(&node->private_list));
node->array = XA_RCU_FREE;
- call_rcu(&node->rcu_head, radix_tree_node_rcu_free);
+ call_rcu_lazy(&node->rcu_head, radix_tree_node_rcu_free);
}
/*
--
2.37.2.789.g6183377224-goog
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