* [PATCH 15/24] mm/list_lru.c: Rename kvfree_rcu() to local variant
[not found] <20200427111113.5956-1-urezki@gmail.com>
@ 2020-04-27 11:11 ` Uladzislau Rezki (Sony)
2020-04-27 11:11 ` [PATCH 18/24] mm/list_lru.c: Remove kvfree_rcu_local() function Uladzislau Rezki (Sony)
1 sibling, 0 replies; 3+ messages in thread
From: Uladzislau Rezki (Sony) @ 2020-04-27 11:11 UTC (permalink / raw)
To: Joel Fernandes; +Cc: Uladzislau Rezki (Sony), linux-mm, Andrew Morton, rcu
Rename kvfree_rcu() function to the kvfree_rcu_local() one. The aim is
to introduce the public API that would conflict with this one. So we
temporarily rename it and remove it in a later commit.
Cc: linux-mm@kvack.org
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: rcu@vger.kernel.org
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
---
mm/list_lru.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/mm/list_lru.c b/mm/list_lru.c
index 4d5294c39bba..42c95bcb53ca 100644
--- a/mm/list_lru.c
+++ b/mm/list_lru.c
@@ -373,14 +373,14 @@ static void memcg_destroy_list_lru_node(struct list_lru_node *nlru)
struct list_lru_memcg *memcg_lrus;
/*
* This is called when shrinker has already been unregistered,
- * and nobody can use it. So, there is no need to use kvfree_rcu().
+ * and nobody can use it. So, there is no need to use kvfree_rcu_local().
*/
memcg_lrus = rcu_dereference_protected(nlru->memcg_lrus, true);
__memcg_destroy_list_lru_node(memcg_lrus, 0, memcg_nr_cache_ids);
kvfree(memcg_lrus);
}
-static void kvfree_rcu(struct rcu_head *head)
+static void kvfree_rcu_local(struct rcu_head *head)
{
struct list_lru_memcg *mlru;
@@ -419,7 +419,7 @@ static int memcg_update_list_lru_node(struct list_lru_node *nlru,
rcu_assign_pointer(nlru->memcg_lrus, new);
spin_unlock_irq(&nlru->lock);
- call_rcu(&old->rcu, kvfree_rcu);
+ call_rcu(&old->rcu, kvfree_rcu_local);
return 0;
}
--
2.20.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* [PATCH 18/24] mm/list_lru.c: Remove kvfree_rcu_local() function
[not found] <20200427111113.5956-1-urezki@gmail.com>
2020-04-27 11:11 ` [PATCH 15/24] mm/list_lru.c: Rename kvfree_rcu() to local variant Uladzislau Rezki (Sony)
@ 2020-04-27 11:11 ` Uladzislau Rezki (Sony)
1 sibling, 0 replies; 3+ messages in thread
From: Uladzislau Rezki (Sony) @ 2020-04-27 11:11 UTC (permalink / raw)
To: Joel Fernandes; +Cc: Uladzislau Rezki (Sony), linux-mm, Andrew Morton, rcu
Since there is newly introduced kvfree_rcu() API, there is no need in
queuing and using call_rcu() to kvfree() an object after the GP.
Remove kvfree_rcu_local() function and replace call_rcu() by new
kvfree_rcu() API that does the same but in more efficient way.
Cc: linux-mm@kvack.org
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: rcu@vger.kernel.org
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
---
mm/list_lru.c | 13 +++----------
1 file changed, 3 insertions(+), 10 deletions(-)
diff --git a/mm/list_lru.c b/mm/list_lru.c
index 42c95bcb53ca..a0b08b27a9b9 100644
--- a/mm/list_lru.c
+++ b/mm/list_lru.c
@@ -12,6 +12,7 @@
#include <linux/slab.h>
#include <linux/mutex.h>
#include <linux/memcontrol.h>
+#include <linux/rcupdate.h>
#include "slab.h"
#ifdef CONFIG_MEMCG_KMEM
@@ -373,21 +374,13 @@ static void memcg_destroy_list_lru_node(struct list_lru_node *nlru)
struct list_lru_memcg *memcg_lrus;
/*
* This is called when shrinker has already been unregistered,
- * and nobody can use it. So, there is no need to use kvfree_rcu_local().
+ * and nobody can use it. So, there is no need to use kvfree_rcu().
*/
memcg_lrus = rcu_dereference_protected(nlru->memcg_lrus, true);
__memcg_destroy_list_lru_node(memcg_lrus, 0, memcg_nr_cache_ids);
kvfree(memcg_lrus);
}
-static void kvfree_rcu_local(struct rcu_head *head)
-{
- struct list_lru_memcg *mlru;
-
- mlru = container_of(head, struct list_lru_memcg, rcu);
- kvfree(mlru);
-}
-
static int memcg_update_list_lru_node(struct list_lru_node *nlru,
int old_size, int new_size)
{
@@ -419,7 +412,7 @@ static int memcg_update_list_lru_node(struct list_lru_node *nlru,
rcu_assign_pointer(nlru->memcg_lrus, new);
spin_unlock_irq(&nlru->lock);
- call_rcu(&old->rcu, kvfree_rcu_local);
+ kvfree_rcu(old, rcu);
return 0;
}
--
2.20.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* [PATCH 18/24] mm/list_lru.c: Remove kvfree_rcu_local() function
2020-04-28 20:58 [PATCH 00/24] Introduce kvfree_rcu(1 or 2 arguments) Uladzislau Rezki (Sony)
@ 2020-04-28 20:58 ` Uladzislau Rezki (Sony)
0 siblings, 0 replies; 3+ messages in thread
From: Uladzislau Rezki (Sony) @ 2020-04-28 20:58 UTC (permalink / raw)
To: LKML, linux-mm
Cc: Andrew Morton, Paul E . McKenney, Theodore Y . Ts'o,
Matthew Wilcox, Joel Fernandes, RCU, Uladzislau Rezki,
Oleksiy Avramchenko
Since there is newly introduced kvfree_rcu() API, there is no need in
queuing and using call_rcu() to kvfree() an object after the GP.
Remove kvfree_rcu_local() function and replace call_rcu() by new
kvfree_rcu() API that does the same but in more efficient way.
Cc: linux-mm@kvack.org
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: rcu@vger.kernel.org
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
---
mm/list_lru.c | 13 +++----------
1 file changed, 3 insertions(+), 10 deletions(-)
diff --git a/mm/list_lru.c b/mm/list_lru.c
index 42c95bcb53ca..a0b08b27a9b9 100644
--- a/mm/list_lru.c
+++ b/mm/list_lru.c
@@ -12,6 +12,7 @@
#include <linux/slab.h>
#include <linux/mutex.h>
#include <linux/memcontrol.h>
+#include <linux/rcupdate.h>
#include "slab.h"
#ifdef CONFIG_MEMCG_KMEM
@@ -373,21 +374,13 @@ static void memcg_destroy_list_lru_node(struct list_lru_node *nlru)
struct list_lru_memcg *memcg_lrus;
/*
* This is called when shrinker has already been unregistered,
- * and nobody can use it. So, there is no need to use kvfree_rcu_local().
+ * and nobody can use it. So, there is no need to use kvfree_rcu().
*/
memcg_lrus = rcu_dereference_protected(nlru->memcg_lrus, true);
__memcg_destroy_list_lru_node(memcg_lrus, 0, memcg_nr_cache_ids);
kvfree(memcg_lrus);
}
-static void kvfree_rcu_local(struct rcu_head *head)
-{
- struct list_lru_memcg *mlru;
-
- mlru = container_of(head, struct list_lru_memcg, rcu);
- kvfree(mlru);
-}
-
static int memcg_update_list_lru_node(struct list_lru_node *nlru,
int old_size, int new_size)
{
@@ -419,7 +412,7 @@ static int memcg_update_list_lru_node(struct list_lru_node *nlru,
rcu_assign_pointer(nlru->memcg_lrus, new);
spin_unlock_irq(&nlru->lock);
- call_rcu(&old->rcu, kvfree_rcu_local);
+ kvfree_rcu(old, rcu);
return 0;
}
--
2.20.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
end of thread, other threads:[~2020-04-28 21:00 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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[not found] <20200427111113.5956-1-urezki@gmail.com>
2020-04-27 11:11 ` [PATCH 15/24] mm/list_lru.c: Rename kvfree_rcu() to local variant Uladzislau Rezki (Sony)
2020-04-27 11:11 ` [PATCH 18/24] mm/list_lru.c: Remove kvfree_rcu_local() function Uladzislau Rezki (Sony)
2020-04-28 20:58 [PATCH 00/24] Introduce kvfree_rcu(1 or 2 arguments) Uladzislau Rezki (Sony)
2020-04-28 20:58 ` [PATCH 18/24] mm/list_lru.c: Remove kvfree_rcu_local() function Uladzislau Rezki (Sony)
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